Original Research

Tropical Animal Health and Production

, Volume 43, Issue 3, pp 597-601

Effect of climate factors on conception rate of lactating dairy cows in Mexico

  • Abel Villa-ManceraAffiliated withLaboratorio de Genética y Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Benemérita Universidad Autónoma de PueblaDepartamento de Biología de la Reproducción, Universidad Autónoma Metropolitana Unidad Iztapalapa Email author 
  • , Maximino Méndez-MendozaAffiliated withLaboratorio de Genética y Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Benemérita Universidad Autónoma de Puebla
  • , Rubén Huerta-CrispínAffiliated withLaboratorio de Genética y Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Benemérita Universidad Autónoma de Puebla
  • , Felicitas Vázquez-FloresAffiliated withLaboratorio de Genética y Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Benemérita Universidad Autónoma de Puebla
  • , Alejandro Córdova-IzquierdoAffiliated withDepartamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Unidad Xochimilco

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Abstract

The purpose of this study was to investigate the relationship between conception rate (CR) and climate variables. Data consisted of 24,380 inseminations of Holstein dairy herd in Hidalgo, Mexico. Weather records, including daily temperature (T), relative humidity (RH), rainfall, wind speed, and solar radiation, were obtained from a nearby weather station. Means for each climatic variable from 2 days before artificial insemination (AI) to the AI day were calculated for each conception date represented in the study. A significant negative correlation was observed between the CR and mean and minimum T, mean and minimum RH, mean and minimum temperature–humidity index (THI), and rainfall. The overall mean CR was 34.3%. The CR in lactating dairy cows followed a seasonal pattern, lower CRs were observed in summer months than during winter (32.1% vs. 36.9%; P < 0.01). The variables that had the greatest influence on CR were minimum and maximum T, minimum RH, minimum THI, wind speed, and rainfall.

Keywords

Dairy cows Reproduction Conception rate Climate factors