Age at first calving and dairy productivity of Holstein cattle in the central coast of PeruX

Authors

  • Emmanuel Sessarego D. P. de Ingeniería Zootécnica, Facultad de Ingeniería Agraria, Industrias Alimentarias y Ambiental, Universidad Nacional José Faustino Sánchez Carrión, Huacho
  • Juan Chávez C. Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Lima
  • Alberto Barrón L. Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Lima
  • Angel Vásquez R. E.P. de Ingeniería Zootécnica, Facultad de Ingeniería Agraria, Industrias Alimentarias y Ambiental, Universidad Nacional José Faustino Sánchez Carrión, Huacho
  • Manuel López C. Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Lima

DOI:

https://doi.org/10.15381/rivep.v30i4.17153

Keywords:

age at first calving, milk production, calving interval, Holstein, central coast of Peru

Abstract

The aim of this study was to determine the effect of age at first calving (AFC) on the standardized production of milk (SMP) of the first and second lactation and interval between the first two calvings (CI) in Holstein cows of the Lima region, Peru. Records of 4215 cows from nine farms, registered in the Dairy Productivity Service of the National Agrarian University La Molina, between January 2003 and December 2012 were analysed. The information was analysed through descriptive statistics and by a mixed linear model, using SAS 9.4. The average AFC was 24.9 ± 2.3 months. The AEPP influenced on the SMP (p=0.0008), but not in the IEP (p=0.3969). Likewise, significant differences were found (p<0.01) between the two lactations, between the four seasons of the year and between the 10 years evaluated for the two variables under study. In conclusion, higher SMP and lower CI were observed at intermediate ages (22-30 months), so the optimal AFC would be around 22 months to achieve maximum productive performance.

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Published

2020-02-04

Issue

Vol. 30 No. 4 (2019)

Section

Artículos Primarios

License

Copyright (c) 2020 Emmanuel Sessarego D., Juan Chávez C., Alberto Barrón L., Angel Vásquez R., Manuel López C.

Creative Commons License

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

AUTHORS RETAIN THEIR RIGHTS:

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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

Sessarego D., E., Chávez C., J., Barrón L., A., Vásquez R., A., & López C., M. (2020). Age at first calving and dairy productivity of Holstein cattle in the central coast of PeruX. Revista De Investigaciones Veterinarias Del Perú, 30(4), 1603-1610. https://doi.org/10.15381/rivep.v30i4.17153