Productive and economic response to concentrate supplementation by grazing dairy cows at high stocking

Autores/as

  • Benito Albarran-Portillo Universidad Autónoma del Estado de México
  • Felipe López-González Universidad Autónoma del Estado de México. Instituto de Ciencias Agropecuarias y Rurales. México.
  • Miguel Ruiz-Albarrán Universidad Autónoma de Tamaulipas. Facultad de Medicina Veterinaria y Zootecnia. México.
  • Carlos Manuel Arriaga-Jordán Universidad Autónoma del Estado de México. Instituto de Ciencias Agropecuarias y Rurales. México.

DOI:

https://doi.org/10.22319/rmcp.v10i4.4787

Palabras clave:

milk, supplements, concentrate, intake, stoking rate, cost

Resumen

Small-scale dairy systems contribute to ameliorate rural poverty and to local milk supply. Their sustainability is limited by high feeding costs, mainly from purchased concentrates (CC); whereas a higher reliance on quality forage may improve profitability; but high stocking rates may justify high CC use. The objective of this work was to assess the productive and economic response by grazing dairy cows to levels of CC under grazing of ryegrass–white clover pastures under high stocking rate (4 cows/ha). Six Holstein milking cows were replicated assigned 3 X 3 Latin Square arrangements. Daily milk yield and composition were recorded, and feed intake estimated from utilised metabolizable energy. Treatments were: T1= 1.0 kg T6= 3.0 kg and T6= 6.0 kg concentrate/cow/d. There were significant differences (P<0.05) for milk yield, with T6 having higher yields than T1 and T3. There were no significant differences in milk protein or fat content among treatments (P>0.05). Herbage intake was significantly (P<0.05) lower in T6, with no differences (P>0.05) between T1 and T3. There were no differences in margins over feeding costs, but feeding cost per kg of milk was 2.2 times higher in T6 compared to T1, and margin per kilo of milk was 26 % higher in T1 than T6. Although milk yields are higher with T6, T1 and T3 require less expenditures and margins are similar. Supplementation may alleviate high grazing pressure that deteriorates pastures, ensuring the long-term sustainability of small-scale dairy farming systems.

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Biografía del autor/a

Benito Albarran-Portillo, Universidad Autónoma del Estado de México

Médico Veterinario Zootecnista. Universidad Autónoma del Estado de México. (1992-1997).

M. en C. Universidad Nacional Autónoma del México.

Ph.D. Imperial College, University of London.

Felipe López-González, Universidad Autónoma del Estado de México. Instituto de Ciencias Agropecuarias y Rurales. México.

Dr. en C. Ciencias Agropecuarias Y Recursos Naturales. Universidad Autónoma del Estado de México

Miguel Ruiz-Albarrán, Universidad Autónoma de Tamaulipas. Facultad de Medicina Veterinaria y Zootecnia. México.

Médico Veterinario Zootecnista. Universidad Autónoma del Estado de México.

M. en C. Universidad Autónoma del Estado de México.

Dr. en C. Universidad Austral de Chile.

Carlos Manuel Arriaga-Jordán, Universidad Autónoma del Estado de México. Instituto de Ciencias Agropecuarias y Rurales. México.

Médico Veterinario Zootecnista. Universidad Nacional Autónoma de México.

M. en Sc. Reading University. Reino Unido.

Ph.D. Wye College, University of London.

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Publicado

28.11.2019

Cómo citar

Albarran-Portillo, B., López-González, F., Ruiz-Albarrán, M., & Arriaga-Jordán, C. M. (2019). Productive and economic response to concentrate supplementation by grazing dairy cows at high stocking. Revista Mexicana De Ciencias Pecuarias, 10(4), 855–869. https://doi.org/10.22319/rmcp.v10i4.4787
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