Modeling the lactation curve in Holstein cows from a dairy farm in the valley of Huaura, Peru

Authors

  • Angel Vásquez R. Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA) – Huaral, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima
  • María Elisa C. García S. Departamento de Producción Animal, Facultad de Zootecnia, Universidad Agraria La Molina, Lima
  • Emmanuel Sessarego D. Escuela Profesional de Ingeniería Zootécnica, Facultad de Ingeniería Agraria, Industrias Alimentarias y Ambiental, Universidad José Faustino Sánchez Carrión, Huacho
  • Néstor Chagray A. Escuela Profesional de Ingeniería Zootécnica, Facultad de Ingeniería Agraria, Industrias Alimentarias y Ambiental, Universidad José Faustino Sánchez Carrión, Huacho

DOI:

https://doi.org/10.15381/rivep.v32i1.19488

Keywords:

Holstein, lactation curve, non-linear models, peak production, production at 305 days

Abstract

The aim of this research was to model the lactation curve in dairy cows with nonlinear models (MNL) and nonlinear mixed models (NLMM), in an intensive breeding dairy farm during the period 2007-2013. In total, 22 173 data referred to biweekly milk production controls were analysed, corresponding to 1302 lactations and 668 Holstein cows. The Brody, Wood, Cobby and Wilmink mathematic models were used evaluating NLM and NLMM, considering the cow as a random effect using SAS v. 9.4 statistical package. Applying information from Akaike (AIC) and Bayesian (BIC) method, NLMM was found to be the best fit for the 305-day lactation curve. Wood mixed model was the best fit for the first calving and Wilmink mixed model for the other calvings. Likewise, production peak, days to production peak, percent productive yield by thirds during the lactation period and production at 305 days according to the number of calving were determined.

Downloads

Download data is not yet available.

Downloads

Published

2021-02-26

Issue

Vol. 32 No. 1 (2021)

Section

Artículos Primarios

License

Copyright (c) 2021 Angel Vásquez R., María Elisa C. García S., Emmanuel Sessarego D., Néstor Chagray A.

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

AUTHORS RETAIN THEIR RIGHTS:

a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.

b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigaciones Veterinarias del Perú (RIVEP).

c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating the source of publication (the originator of the work, journal, volume, number and date).

How to Cite

Vásquez R., A., García S., M. E. C., Sessarego D., E., & Chagray A., N. (2021). Modeling the lactation curve in Holstein cows from a dairy farm in the valley of Huaura, Peru. Revista De Investigaciones Veterinarias Del Perú, 32(1), e19488. https://doi.org/10.15381/rivep.v32i1.19488