CATTLE REPRODUCTIVE PARAMETERS IN THE LIMA DAIRY REGION

Authors

  • Dante Ortiz A. Laboratorio de Zootecnia y Producción Agropecuaria
  • José Camacho S. Laboratorio de Zootecnia y Producción Agropecuaria
  • Luisa Echevarría C. Laboratorio de Zootecnia y Producción Agropecuaria

DOI:

https://doi.org/10.15381/rivep.v20i2.606

Keywords:

reproductive parameters, cows, Lima

Abstract

The age at first service (EPS), age at first calving (EPP), calving – first service interval (IPPS), calving – conception interval (IPC), inter-calving interval (IEP), number of services per conception (NSC), conception rate at first service (TCPS) and overall conception rate (TCG) were determined from historical data of 559 dairy cows from 4 intensive milk dairy farms in the Lima region. Variables under analysis were farm, calving season (summer: December–March; winter: April–August; spring: September–November) and parity (primmiparous; multiparous). EPS was 17.5 ± 0.1 months (n = 559), EPP was 27.2 ± 0.2 months (n = 455), IPPS was 109.2 ± 1.5 days (n = 1233), IPC was 181.1 ± 3.4 days (n = 1035), IEP was 15.2 ± 0.1 months (n = 775), NSC was 2.41, TCPS was 46.1% (66.9 and 36.5% en heifers and cows, respectively) and TCG was 41.5%. IPPS of cows that calved in winter was statistically shorter that for cows calving in spring and summer (105.0 vs. 112.7 and 113.8 days, respectively). Likewise, multiparous cows showed better reproductive performance than primmiparous cows.

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Published

2009-12-31

Issue

Vol. 20 No. 2 (2009)

Section

Artículos Primarios

License

Copyright (c) 2009 Dante Ortiz A., José Camacho S., Luisa Echevarría 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

Ortiz A., D., Camacho S., J., & Echevarría C., L. (2009). CATTLE REPRODUCTIVE PARAMETERS IN THE LIMA DAIRY REGION. Revista De Investigaciones Veterinarias Del Perú, 20(2), 196-202. https://doi.org/10.15381/rivep.v20i2.606