https://doi.org/10.22319/rmcp.v16i4.6956

Article

Socioeconomic factors influencing the quality of working life of small milk producers in Carchi, Ecuador

 

Luis Alfredo Carvajal-Pérez a*

Guillermo Fausto Montenegro-Arellano a

Gustavo Javier Terán-Rosero a

Gladys Primavera Urgilés-Urgilés a

Fermín Raúl Cobo-Cuña b

Magaly Herrera-Villafranca b

 

a Universidad Politécnica Estatal del Carchi, Antisana y Universitaria. Tulcán, 040101, Carchi, Ecuador.

b Instituto de Ciencia Animal. Mayabeque, Cuba.

 

*Corresponding author: luis.carvajal@upec.edu.ec

 

Abstract:

This study analyzes the socioeconomic factors influencing the perception of labor well-being of small milk producers in the province of Carchi, which is essential for ensuring the sustainability of the livestock sector. Producers operate in adverse structural conditions, characterized by labor informality, limited income, and poor access to basic services. With a quantitative approach, non-experimental design, and correlational scope, statistical techniques such as the following were applied: contingency tables with Chi-square test, principal component analysis (PCA), cluster analysis for economic variables, and ordinal logistic regression. The analysis was carried out on 516 productive units, constructing a composite index of Quality of Working Life (QWL) classified into three levels: low, medium, and high. The results show that the variables with the highest effects were housing condition (P=0.030), access to basic services (P=0.036), and perceived family needs (P=0.075). In contrast, variables such as sex, age, annual income, or number of head of cattle did not show statistical significance. It is concluded that the QWL in this rural context is more determined by social and family environment factors than by direct productive and economic indicators. These findings reinforce the need for rural development policies that integrate human, family, and community dimensions. It is recommended to advance research that delves into psychosocial aspects, ergonomic conditions, and occupational safety, as well as regional comparative studies that validate the applicability of the proposed QWL index.

Keywords: Labor well-being, Rural family production, Rural development.

 

Received: 05/08/2024

Accepted: 09/06/2025

 

Introduction

Quality of working life (QWL) refers to the degree of satisfaction and physical, psychological, and social well-being experienced by people in their workplace, which encompasses conditions related to the job (schedules, wages, environment, development opportunities)(1). It is essential to guarantee the productivity and sustainable performance of organizations, considering that work goes beyond economic remuneration and impacts personal and social development(2). The topic has been little studied in dairy production, and due to its multidimensional nature and diverse operational conceptions, it lacks a theoretical consensus, which requires continuous empirical research for its understanding(3).

The literature shows different approaches; nevertheless, they agree that the well-being of livestock workers is essential for the sustainability of the sector. In Antioquia, a study revealed that milkers perceive a good QWL, with integration into the workplace, subjective well-being, and personal development options, in a context of informality, low technification, and limited business management. The permanence of workers is conditioned by the possibility of living with their families on the farm, receiving a competitive salary, and exercising some control over tasks(1); in contrast, the risk to physical health is the main reason for abandoning the activity(4). In addition, the productive units lack selection, evaluation, and training processes, as well as job security; workers with a low level of education face informality, working days of 9 to 18 h, and salaries below the legal minimum, without affiliation to Social Security, which makes their stability precarious.

In Ecuador, studies on women workers in the livestock sector of Rumiñahui show low levels of QWL due to a lack of contracts, physical risks, low income, and the absence of occupational safety and health(5). Similarly, in dairy companies in Cotopaxi, a regular work environment and low satisfaction are reported; however, a positive correlation was found between involvement, work organization, and the utilization of human talent, suggesting that organizational improvements can increase performance and well-being(6).

At the international level, Chile has incorporated technology that reduces physical effort and improves ergonomics, but increases mental stress due to the cognitive overload of technical supervision. In Argentina, productive intensification and management changes have weakened family models, affecting social organization and family stability(7). In the United States, Latino immigrant workers face high physical and mental fatigue in routine and demanding jobs, with health problems, insomnia, and chronic burnout(8).

The QWL in the livestock sector still has gaps in its comprehensive measurement, regional comparability, and linkage with public policies. Dairy sustainability depends on the well-being of workers, incorporating the human dimension as a central axis for equitable and resilient rural development(9).

This study focuses on the province of Carchi, Ecuador, a key area in national milk production, with family farms that face challenges in terms of profitability, working conditions, and social inclusion(10). The lack of empirical evidence on the relationship between socioeconomic factors and QWL limits the design of policies and interventions in a context characterized by intermediation, low technification, and weak institutional articulation.

Given the gaps identified, this study applies a rigorous statistical approach that integrates data mining, multivariate analysis, and ordinal logistic regression to explore the relationship between socioeconomic factors and QWL in productive units of Carchi. Unlike research focused on perceptions or descriptive approaches, a composite index of QWL is constructed based on quantifiable and validated indicators, making it suitable for analyzing working conditions in rural contexts.

 

 

 

Material and methods

The research was conducted in the province of Carchi, located in northern Ecuador on the southern border of Colombia, characterized by high-altitude agricultural areas and a cold temperate climate(11). A quantitative, descriptive, and correlational approach was used, with a cross-sectional design(12).

The sample included 516 milk producers, selected proportionally from the six cantons of the province. A five-level Likert survey was applied, which included social variables (age, sex, educational level, family structure, and household conditions) and economic variables (income, expenses, productivity, and indebtedness). The database was refined, scales were standardized, and representative indices were constructed. Contingency tables and the Chi-square test were used to analyze significant associations. Subsequently, a principal component analysis was applied to build QWL(13), classified into three ordinal levels: low, medium, and high. Finally, an ordinal logistic regression model was used to estimate the influence of predictive factors on the QWL index. The statistical analysis was run with Python 3.10 on Google Colab.

 

 

 

Results

The results obtained after applying the instrument, validated with a Cronbach’s alpha of 0.74 and acceptable reliability criteria(14), reveal a critical reality about the socio-educational conditions that affect the QWL of producers in the province of Carchi.

 

 

Table 1: Relationship between educational level and canton

    Educational level

Canton

Illiterate

Primary

Secondary

University

No.

%

No.

%

No.

%

No.

%

Bolívar

13

0.65 jk

29

1.45 ijk

10

0.5 jk

1

0.05 k

Montúfar

48

2.39 ghi

155

7.73 d

173

8.63 c

25

1.25 ijk

Espejo

76

3.79 f

171

8.53 c

112

5.59 e

28

1.40 ijk

Huaca

25

1.25 ijk

170

8.48 c

118

5.89 e

43

2.14 ghi

Tulcán

29

1.45 ijk

337

16.81a

248

12.37 b

66

3.29 fg

Mira

23

1.15 ijk

60

2.99 fgh

34

1.7 hij

11

0.55 jk

Standard error

Significance

± 0.45

P<0.0001

Total

214

10.67

922

45.99

695

34.66

174

8.68

a-k Distinct letters indicate significant differences (P<0.05).

 

 

The analysis of the educational level reveals that 45.99 % of the producers have only primary education, and only 8.68 % reach university studies, which reflects historical gaps in the rural educational level. Tulcán shows polarization with high percentages in primary (16.81 %) and secondary education (12.37 %), in contrast to Espejo and Huaca, where the primary level predominates. The significant differences between cantons (P<0.0001) show structural territorial inequalities that affect QWL. Low educational levels in the livestock sector constitute barriers to the adoption of technologies, access to differentiated markets, and participation in value-added chains(15). These limitations reflect lower productivity, reduced bargaining capacity with intermediaries, and limited access to specialized financing programs, which progressively deteriorate the QWL of producers(16). This contrasts with the demand for global competitiveness, where technical knowledge and the capacity for technological adoption are decisive for the economic sustainability of producers(17). These limitations suggest the need for differentiated interventions according to the territory, with a focus on strengthening human capital to improve QWL and reduce cycles of socioeconomic vulnerability.

 

 

Table 2: Age by canton related to milk production

          Age

Canton

15-14

25-54

55-64

Over 65

Total

No.

%

No.

%

No.

%

No.

%

No.

%

Bolívar

0

0

8

1.55

5

0.97

8

1.55

21

4.07c

Espejo

0

0

57

11.05

27

5.23

14

2.71

98

18.99b

Huaca

2

0.39

57

11.05

17

3.29

23

4.46

99

19.19b

Mira

2

0.39

28

3.88

11

2.13

9

1.74

42

8.14c

Montúfar

0

0

58

11.24

29

5.62

12

2.33

99

19.19b

Tulcán

3

0.58

88

17.05

31

6.01

35

6.78

157

30.43a

Significance

P= 0.0774

SE      ± 1.91

Signif. P=0.0001  

Total

7

1.36c

288

55.81a

120

23.26b

101

19.57b

516

100

SE           Significance

±1.91

P=0.0001

 

 

abc Distinct letters indicate significant differences (P<0.05).

 

 

The distribution showed a predominance of the group from 25 to 54 years old (55.81 %), followed by those from 55 to 64 yr old (23.26 %) and those over 65 yr old (19.57 %). The scarce presence of young people under 25 yr of age (1.36 %) reveals a worrying generational gap, which reflects limited educational and employment opportunities.

Tulcán concentrates the highest proportion of producers of working age (17.05 %), followed by Montufar, Huaca, and Espejo (approximately 11 %), which reinforces the centralization observed in factors such as education and sex. In contrast, the significant presence of older adults poses a dilemma; although they provide experience(18), they are less likely to adopt technology(19), which limits the development of the sector.

This situation coincides with regional studies that report similar age averages in livestock systems in Ecuador and Peru(20). The interaction between age, educational level, and sex forms a socioeconomic framework that affects QWL, demanding differentiated policies that promote the inclusion of young people and the professionalization of the sector(21).

Most of the livestock households in Carchi are made up of medium-sized nuclei of 1 to 4 people (68.41 %), followed by families of 5 members (30.43 %) and a minimum proportion of extended households (1.16 %). This family structure reflects rural demographic transformations that, while relieving economic pressure on income, reduce the availability of labor, intensifying the burden on active members. Comparative studies in Mexico and Ecuador confirm this trend towards small family nuclei in livestock systems(22). In this context, small families face greater limitations in diversifying activities (educational gaps and gender inequality), which negatively affect the productive efficiency and QWL of rural households engaged in livestock farming(23).

 

 

Table 3: Responsible for the family’s economic support

Provider

No.

%

SE and P-value

Father

211

40.89 a

± 1

P=0.001

Wife

168

32.56 b

Children

17

3.29 d

A close relative

83

16.09 c

All members

37

1.17 d

Total

516

100

 

abcd Different letters indicate significant differences (P<0.05).

 

 

The data reveal that the father mostly assumes the role of economic provider (40.89 %), followed by the wife  (32.56 %).  The co-responsibility of all members barely reaches 1.17 %, which reflects a traditional hierarchical structure that places economic pressure on a single individual, affecting their well-being and QWL.

The high female participation in supporting the family evidences their multifunctional role in livestock, domestic, and conservation activities, which strengthens household resilience(24). In contrast, in Mexico, women are still not very visible in livestock farming(25). Collaborative family schemes tend to favor QWL by distributing burdens and improving sustainability in rural contexts(26).

The Categorical Principal Component Analysis (CATPCA) allowed the social variables to be grouped into two explanatory dimensions(27) that represent 62.75 % of the total variance. The index showed excellent internal consistency (a=0.925), validating the integration of the selected factors. Factor loadings greater than 0.50 guarantee the statistical relevance of the indicators in the analysis of QWL(28). This result supports the construction of the composite index and justifies its use in subsequent models.


 

Table 4: Social variables of greatest importance in the CATPCA

Variables

Dimension

Associativity

Canton, customer,

supplier

Canton

0.477

-0.580

Age

-0.215

0.080

Sex

0.042

-0.253

People in the household

0.226

-0.327

Family economic support

0.212

-0.088

Type of housing

0.193

0.352

Customers

-0.201

0.757

Suppliers

-0.229

0.801

Current situation of the family unit

0.055

0.397

Situation after the pandemic

-0.217

0.116

Affiliation with a guild

-0.106

0.038

Political interests, community

0.813

-0.008

Political interests, parish

0.797

0.204

Political interests, province

0.811

0.128

Political interests, country

0.799

0.259

Government management, community

0.837

-0.040

Government management, parish

0.837

0.158

Government management, province

0.854

0.082

Government management, country

0.808

0.185

Participation in a development project

0.057

0.155

Need for land access

0.374

-0.280

Role of women in livestock farming

-0.057

0.295

SPF affecting the quality of life

0.097

0.003

SPF= socioeconomic and productive factors.

 

 

The results of the CATPCA show two key dimensions. The first, Associativity (45.13 %), groups variables related to political interests and government management at different levels, reflecting the importance of collective participation as a way to improve QWL through access to state assistance, inputs, and markets(29).

The second dimension, Canton, Customer, Supplier (17.62 %), shows an inverse relationship between territorial location and commercial connectivity, suggesting that producers located in certain cantons with limited infrastructure face greater logistical barriers, which generates labor overload and lower profitability(30).

Organizational weaknesses also affect the effectiveness of associations, which require institutional strengthening to protect QWL(31). Finally, although productive diversification can cushion economic vulnerability, it increases the workload, so associativity continues to be a key sustainability strategy(32).

 

 

Table 5: Descriptive statistics of productive and economic indicators

Variables

Mean

Standard deviation

Coefficient of

variation (%)

Land area, ha

3.14

1.91

61

Total number of cows, n

6.83

4.56

67

Milking cows, n

4.51

2.74

61

Total daily liters of milk, L

47.59

32.72

69

L/cow/day, L

11.12

3.62

33

L/ha/year, L

6,245.73

3,109.35

50

Total annual income, USD

6,041.46

3,835.89

63

Monthly household income, USD

718.08

439.07

61

Price per liter of milk, USD

0.39

0.07

18

No loss price of milk, USD

0.52

0.06

12

Total profit, USD

302.88

311.70

103

 

 

The analysis reveals a predominant smallholder system, with an average area of 3.14 ha and high structural vulnerability (CV= 61 %), which conditions the economic stability of the productive units. The average total monthly profit of 302.88 USD is highly dispersed (CV= 103 %), showing polarization between producers with positive margins and others with minimal or negative profitability, which affects QWL. Although individual productivity (11.12 L/cow/d) exceeds the minimum standards of 10 L of milk on average(9), the average price received per liter (0.39 USD) does not always cover the costs, as a result of the instability in marketing conditions and quality penalties(20).

 

 

Figure 1: Relationship of agro-productive units (APU) size and income

 

 

Quality incentive policies(33), which establish a price of 0.50 USD per liter of milk, are not respected in practice. The analysis suggests that factors such as management, access to markets, and application of GAPs have a greater impact on income than farm size(34), as evidenced by the dispersion in Figure 1. These economic conditions, combined with structural limitations and lack of technical support, aggravate labor inequalities and compromise the sustainability of the sector(29).

A non-linear relationship is observed between the size of the APU (ha) and the income from milk sales. Despite expectations, there is no direct correlation between larger areas and higher incomes. Some producers with small farms achieve high incomes, suggesting that factors such as technification, efficient management, cattle genetics, and intensive land use have a greater impact on economic results than the available area. This dispersion confirms that the size of the farm alone does not determine profitability, and that QWL is strongly conditioned by technical and organizational capacities rather than by structural factors(35).

 

 

Table 6: Total variance explained and matrix of principal components, according to productive and economic indicators

Variables

Components

Production and

Economy

Efficiency,

Productivity, and

Market

Area

Land area, ha

0.528

0.293

-0.755

Total number of cows, n

0.497

0.701

-0.070

Milking cows, n

0.689

0.668

0.098

Total daily liters of milk, L

0.934

0.289

-0.040

L/cow/day, L

0.392

-0.670

-0.240

L/ha/year, L

0.428

0.052

0.851

Total annual income, USD

0.974

0.089

0.036

Monthly household income, USD

0.896

-0.009

-0.017

Price per liter of milk, USD

-0.118

-0.724

0.266

No loss price of milk, USD

-0.019

0.418

-0.020

Total profit, USD

0.850

-0.163

0.065

Eigenvalue

5.07

1.98

1.38

% Variance

46.10

18.00

12.55

% Cumulative variance

46.10

64.10

76.65

 

 

The PCA applied was statistically validated (KMO= 0.77; Bartlett P<0.001) and allow to condense eleven productive and economic variables into three components that explained 76.65 % of the total variance, indicating a high capacity of the model to synthesize information and reduce dimensionality(14). The first component, called Production and Economy (46.10 %), groups variables such as milking cows, total daily liters of milk, total annual income, monthly household income, and total profit, reflecting the productive economic capacity of the family unit, which is essential to improve working conditions(34).

Regarding the second, Efficiency, Productivity, and Market (18 %), the inverse relationship between the number of cows and individual yield (L/cow/day) suggests that systems with higher stocking rates are not always efficient, which can lead to work overload and low pay. The third, Area (12.55 %), highlights how small areas can have high productivity per hectare, although with greater labor demands. This confirms that QWL is influenced by a complex interaction between income, technical efficiency, and operational scale, which requires differentiated state policies according to productive profile and access to markets(36).

 

 

Table 7: Relevant variables of the ordinal logistic regression model

Variable

Coefficient

P-value

Significance

Housing condition index

77.67

0.030

Significant

Basic services index

–464.25

0.036

Significant

Family needs index

37.72

0.075

Marginal

Threshold 1/2

–253.51

0.017

Threshold QWL low-medium

Threshold 2/3

4.83

0.000

Threshold QWL medium-high

 

 

The ordinal logistic regression model identified three socioeconomic variables significantly associated with QWL: housing condition (77.67; P=0.030), access to basic services (-464.25; P=0.036), and family needs (37.72; P=0.075). This shows that better housing conditions and fewer needs are associated with a higher probability of achieving a high QWL. On the contrary, the lack of basic services significantly reduces this probability.

Variables such as age, sex, annual income, number of cows, and health and food expenditures were not significant. This can be explained by the complex and multidimensional nature of QWL, which does not depend exclusively on productive or demographic factors but rather on a comprehensive environment that connects the material conditions of the home, the satisfaction of family needs, and the perception of well-being in the work environment.

The estimated thresholds of the model (-253.51 and 4.83) indicate a clear statistical differentiation between low, medium, and high levels of QWL, which validates the proposed ordinal structure and reinforces the robustness of the model.

 

 

 

Discussion

Producers in the province of Carchi face structural limitations that negatively affect QWL. Among them, restricted access to formal markets, unstable prices, adverse geographical conditions, low technification, and dependence on intermediaries stand out, which are factors influencing their economic sustainability(37). Recent studies have revealed that the psychosocial conditions of agricultural work have a substantial impact on workers’ health and job satisfaction(38). In addition, work overload, lack of autonomy, and perception of insecurity cause widespread discontent among rural workers(39). Similarly, in rural agricultural contexts, the lack of job stability, exposure to physical risks, and the pressure to meet goals without supervisory support exacerbate emotional distress and affect motivation at work(40).

The statistical analysis identified significant differences between producers according to schooling, access to basic services, and living conditions; 45.99 % have primary education, which limits access to technologies and opportunities for productive improvement. In this sense, low schooling in the agricultural sector, compared to national averages in Colombia, generates direct consequences of social exclusion(1), since low levels of education correlate with limited job opportunities, reduced income, and the perpetuation of informality and precariousness of rural employment(5).

Likewise, the low participation of women in productive management shows persistent cultural barriers. To reverse this situation, it is necessary to strengthen their technical and leadership capacities(41). For this reason, the rural socioeconomic fabric must actively engage in training and development, especially in technical and management skills, to boost its competitiveness and improve general well-being. On the other hand, associativity appears as a protective factor of QWL, since it facilitates access to resources, markets, and support(29). Systematic exclusion and geographical or infrastructure barriers in isolated areas limit access to commercial networks, which leads to extended working hours and intense marketing efforts that affect income, job insecurity, and occupational frustration(41).

Multivariate analyses (PCA and cluster) made it possible to segment producers according to their economic conditions, establishing differentiated well-being profiles(42). The construction of a composite index of QWL allows to categorize the standard of working life (low, medium, high) and showed that access to basic services and the quality of housing are statistically significant determinants(43). In this categorization, disparities must be identified, and the working conditions in the sector must be understood, since, in rural areas, the lack of knowledge of risks at work, the lack of formal hiring, as well as the absence of health and safety, lead to a low perception of QWL(5).

 

 

 

Conclusions and implications

The QWL in rural contexts does not depend solely on income, but on a complex interaction between structural conditions, individual capacities, access to services, and collective participation. Therefore, differentiated policies are required to promote the well-being, inclusion, and sustainability of the dairy sector. The application of the methodological approach and the ordinal logistic regression model allow to establish that such factors have a significant or marginal impact on the perception of occupational well-being. It is confirmed that, in rural contexts with adverse structural conditions, QWL is configured from a multidimensional perspective, requiring a comprehensive analysis of the family, social, and physical environment of the producer. Future studies should explore psychosocial and occupational health variables, as well as regional comparisons, to validate and expand understanding of the proposed index of quality of life.

 

Acknowledgements and conflict of interest

The research has received financial support for projects from the State Polytechnic University of Carchi, Ecuador / 2023-2024.

There are no conflicts of interest regarding the research and its results.

 

Literature cited:

1.     Vásquez-Jaramillo C, Barrios D, Cerón-Muñoz MF. Estudio exploratorio de la calidad de vida en el trabajo de ordeñadores de sistemas de producción de leche. Arch Zoot 2018;67(258):228-33. https://www.uco.es/ucopress/az/index.php/az/article/view/3658.

2.     Cruz-VJE. La calidad de vida laboral y el estudio del recurso humano: una reflexión sobre su relación con las variables organizacionales. Rev Cient Pensam Gestión 2024;45(45):58–81. https://rcientificas.uninorte.edu.co/index.php/pensamiento/article/view/10617/214421443127.

3.     Salas M, Basante Y, Zambrano C, Matabanchoy S, Narváez A. Concepciones sobre calidad de vida laboral en las organizaciones. Inf Psicológicos 2021;21(2):209–27. https://revistas.upb.edu.co/index.php/informespsicologicos/article/view/7215.

4.     Gavilanes C, Illapa J, Guamán M, Guerrero C. Autopercepción del nivel de vida en los asociados a gremios agrícolas en Tungurahua, Ecuador. Relig Rev Cienc Soc Humanidades 2022;7(34):e210983. https://revista.religacion.com/index.php/religacion/article/view/983.

5.     García-Aucatoma S, Paredes N, García Rosero L. Condiciones de calidad de vida en el trabajo de las mujeres del sector agropecuario. Cantón Rumiñahui. Rev Cient Tecnol UPSE 2017;4(3):92–102.  https://incyt.upse.edu.ec/ciencia/revistas/index.php/rctu/article/view/279.

6.     Calle M, Velasquez J, Luy A, Carrasco G. Implicancias del clima organizacional en el desempeño laboral de los empleados del sector agrícola de la provincia del Oro, Ecuador. Rev Cient FIPCAEC 2023; 8(3):375–92. https://www.fipcaec.com/index.php/fipcaec/article/view/873.

7.     Vértiz P. La organización social del trabajo en la producción primaria láctea de Argentina: ¿cambios en los agentes productivos? Pilquen Sección Ciencias Soc 2020;23(2):29–45. https://ri.conicet.gov.ar/handle/11336/136807.

8.     Ramos AK, McGinley M, Carlo G. Fatigue and the Need for Recovery among Latino/a Immigrant Cattle Feedyard Workers. J Agromedicine 2021;26(1):47–58. https://www.tandfonline.com/doi/abs/10.1080/1059924X.2020.1845894.

9.     Bejarano C, López I, Vaca C, Mera R. Producción agrícola sustentable para el sector pecuario y el cambio climático. Rev Alfa 2021;5(14):274–84. http://revistaalfa.org/index.php/revistaalfa/article/view/125.

10. Mizik T, Nagy J, Molnár E, Maró Z. Challenges of employment in the agrifood sector of developing countries—a systematic literature review. Humanit Soc Sci Commun 2025;12(62):1–16. https://www.nature.com/articles/s41599-024-04308-3.

11. Franco W. Propuestas para la innovación en los sistemas agroproductivos y el desarrollo sostenible del valle interandino en Carchi, Ecuador. Tierra Infin 2016;2(1):59–91. https://revistasdigitales.upec.edu.ec/index.php/tierrainfinita/article/view/104.

12. Hernández-Sampieri R, Mendoza C. Metodología de la investigación. Las rutas cuantitativa, cualitativa y mixta. Interamericana Mexico: Mc Graw Hill; 2018.

13. Nigro H. Reducción de dimensionalidad en grandes volúmenes de datos usando PCA y t-SNE. Rev Ing Matem Cienc Inf 2025;12(23):139–46. https://ojs.urepublicana.edu.co/index.php/ingenieria/article/view/1133.

14. Hair JF, Black WC, Babin BJ, Anderson RE. Multivariate data analysis [Internet]. 18th ed. United Kingdom: Cengage Learning EMEA 2019. www.cengage.com/highered.

15. Requelme N, Bonifaz N. Caracterización de sistemas de producción lechera de Ecuador. La Granja 2012;15(1):56–69.

16. Guamán S. Desarrollo de políticas agrarias y su influencia en los pequeños agricultores ecuatorianos. Rev Cient Zambos 2022;1(3):15–28. https://revistaczambos.utelvtsd.edu.ec/index.php/home/article/view/30.

17. Leyva A, Espejel J, Cavazos J. Efecto del desempeño del capital humano en la capacidad de innovación tecnológica de las Pymes. Innovar 2020;30(76):25–36. https://revistas.unal.edu.co/index.php/innovar/article/view/85192.

18. Barajas Y, Pabuena J. Determinantes de la eficiencia de la agricultura del nororiente colombiano en el año 2019. Unab 2023;1:1–39.

19. Eeswaran R, Nejadhashemi AP, Faye A, Min D, Prasad PVV, Ciampitti IA. Current and future challenges and opportunities for livestock farming in West Africa: Perspectives from the case of Senegal. Agronomy 2022;12(1018):1–23. https://www.mdpi.com/2073-4395/12/8/1818/htm.

20. Andrade G, Andrade M, Suárez A, Bautista H, Haro A. Impacto socioeconómico de la ganadería lechera en comunidades indígenas del Ecuador. EASI Eng Appl Sci Ind. 2023;2(1):34–43. https://revistas.ug.edu.ec/index.php/easi/article/view/1907.

21. Choque J, Rabanal R, Saucedo J, Aldava U. Perfiles sociodemográficos de productores de ganado lechero en la microcuenca del río Nupe, región Huánuco. Rev Investig Agropecu Sci Biotechnol 2024;4(1):42–51. https://revistas.untrm.edu.pe/index.php/RIAGROP/article/view/969.

22. Cayambe J, Vásquez M, Heredia M. Estimation of CO2 emissions and management recommendations for cattle farms in the Andes of Ecuador. IDESIA 2024;42(2):66–78. https://doi.org/10.4067/S0718-34292024000200066.

23. Barrón-Bravo O, Avilés-Ruiz R, Ángel-Sahagún C, Alcalá-Rico J, Arispe-Vázquez J, Garza-Cedillo R. Caracterización de unidades de producción familiar de bovinos, Llera, Tamaulipas, México. Abanico Boletín Técnico 2023; 2:1–21. https://abanicoacademico.com/abanicoboletintecnico/article/view/115.

24. Pallete A, Malaga A, García M. Características socioganaderas y niveles de productividad de establos lecheros de la Irrigación Santa Rita en Arequipa. Ann Científicos 2018;79(1):130–6. https://revistas.lamolina.edu.pe/index.php/acu/article/view/1149/html_19.

25. Del Angel G, Escalona M, Baca J, Cuevas V. Principios y prácticas agroecológicas para la transición hacia una ganadería bovina sostenible. Revisión. Rev Mex Cienc Pecu 2023; 14(3): 696–724. https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/6287.

26. Martínez G, Mora J, Menéndez C. Las familias campesinas y los sistemas de producción de leche en el cañón de Anaime (Colombia). Perspect Rural Nueva Época 2023;21(41):1–25. https://dialnet.unirioja.es/servlet/articulo?codigo=8998879.

27. Atkinson W. Charting fields and spaces quantitatively: from multiple correspondence analysis to categorical principal components analysis. Qual Quant 2024;58(1):829–48. https://link.springer.com/10.1007/s11135-023-01669-w.

28. Leal D, Azevedo A, De Almeida A, De Souza P, Duarte E, Raidan F. A principal component analysis required in technical assistance guidance for chilled raw milk producers. Acta Sci Anim Sci 2022;44(e55570):1–10. https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/55570.

29. Bojórquez A, Lendechy Á, Flores A. Precios justos y tendencias de venta de productos agropecuarios mexicanos a intermediarios. Cuader Desarro Rural 2020;17:1–24. https://revistas.javeriana.edu.co/index.php/desarrolloRural/article/view/26566.

30. Barragán F. Pequeños productores, ciudades y leche: desafíos en el abastecimiento alimentario en los Andes norte del Ecuador [Internet]. Quito: Instituto de Altos Estudios Nacionales 2023. https://editorial.iaen.edu.ec/download/pequenos-productores-ciudades-y-leche-desafios-en-el-abastecimiento-alimentario-en-los-andes-norte-del-ecuador/.

31. Acevedo-González G, Múnera-Ramírez R. Aproximación a un sistema asociativo de comercialización para productos agrarios de pequeños y medianos productores. Rev Lasallista Investig 2020; 17(2): 162–76. http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S1794-44492020000200162&lng=en&nrm=iso&tlng=es.

32. Carrasco S, Altamirano JR, Vargas M, Islas A. Pequeñas empresas productoras de leche: un estudio desde la perspectiva del modelo de negocio. Innovar 2022;32(84):111–22. https://revistas.unal.edu.co/index.php/innovar/article/view/100596.

33. MPCEIP-MAG. Acuerdo Interministerial Nro. 024. 2024.

34. Naranjo F, Cabrera H. Factores que inciden en la producción lechera de las fincas de la parroquia El Esfuerzo. Cienc Lat 2022;6(6):7884–98. https://ciencialatina.org/index.php/cienciala/article/view/3959.

35. Hernández AA, Flores SM. Sistemas silvopastoriles intensivos donde se incorporen arbustos forrajeros como opción a la sustentabilidad ganadera en la Región Centro del estado de Veracruz. Jóvenes en la Cienc 2023;23:1–6. https://www.jovenesenlaciencia.ugto.mx/index.php/jovenesenlaciencia/article/view/4183.

36. Ortiz P, Gil J, Gurin M, Krall E, Arbeletche P. ¿Es la intensificación en lechería un camino ineludible? O la reducción de costos y productividad, ¿es también una opción sostenible? Rev Investig Agropecu Sci Biotechnol 2024;4(2):43–56. https://revistas.untrm.edu.pe/index.php/RIAGROP/article/view/995.

37. Masaquiza D, Pereda J, Curbelo L, Figueredo R, Cervantes M. Intensificación de los sistemas agropecuarios y su relación con la productividad y eficiencia. Resultados con su aplicación. Artículo de Revisión. Rev Prod Anim 2017;29(2):57–64.

38. Osorio C, Ponce Z. Explorando el vínculo entre el estrés, la satisfacción laboral y el agotamiento en trabajadores del campo. Poliantea 2023;18(1):1–15. https://dialnet.unirioja.es/servlet/articulo?codigo=9438331.

39. Restrepo F. Las condiciones de trabajo y su impacto en la salud física y psicosocial de los trabajadores del sector agropecuario. Rev Mex Agroneg 2024;54(2024):607–15. https://ageconsearch.umn.edu/record/344662.

40. Rada R. Percepción que tienen los trabajadores rurales respecto a la seguridad y salud en el trabajo. Rev Colomb Salud Ocup 2022;12(1):1–12. https://dialnet.unirioja.es/servlet/articulo?codigo=8992974.

41. Cusme A, López D, Montesdeoca D, Márquez Y. Gestión social y la calidad de vida en asociaciones rurales. Rev Ñeque 2024;7(17):9–24. https://revistaneque.org/index.php/revistaneque/article/view/153.

42. Caiza F, Taipe M, Molina P, Dazzini M. La ganadería de leche y el desarrollo socioeconómico del cantón Mejía. Rev Cient Salud Desarro Hum 2024;5(2):306–30. https://revistavitalia.org/index.php/vitalia/article/view/188.

43. Ramírez M, Chávez R, Ramírez R. Factores que definen la rentabilidad en sistemas de producción de ganado bovino en pequeña escala. Rev Mex Agroneg 2024;54:617–30. https://ideas.repec.org/a/ags/remeag/344540.html.