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

被引：10
|
作者：
Villa-Mancera, Abel [1 ,2 ]
Mendez-Mendoza, Maximino [1 ]
Huerta-Crispin, Ruben [1 ]
Vazquez-Flores, Felicitas [1 ]
Cordova-Izquierdo, Alejandro [3 ]
机构：
[1] Benemerita Univ Autonoma Puebla, Fac Med Vet & Zootecnia, Lab Genet & Reprod, Puebla 75482, Mexico
[2] Univ Autonoma Metropolitana, Unidad Iztapalapa, Dept Reprod Biol, Mexico City, DF, Mexico
[3] Univ Autonoma Metropolitana, Unidad Iztapalapa, Dept Prod Agr & Anim, Mexico City, DF, Mexico
来源：
TROPICAL ANIMAL HEALTH AND PRODUCTION | 2011年 / 43卷 / 03期
关键词：
Dairy cows; Reproduction; Conception rate; Climate factors; HEAT-STRESS; NORTHEASTERN SPAIN; IMPROVE FERTILITY; CATTLE; TEMPERATURE; HOLSTEIN; MANAGEMENT; HUMIDITY;
D O I：
10.1007/s11250-010-9737-5
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
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.
引用
收藏
页码：597 / 601
页数：5
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