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Factores asociados del estrés calórico y producción de leche sobre la tasa de gestación en bovinos en sistemas intensivos The effect of heat stress and milk yield on pregnancy rates of dairy cattle under intensive production systems
| Content Provider | Semantic Scholar |
|---|---|
| Author | Domíngueza, Renato Raúl Lozano Peláezb, Carlos Gustavo Vásquez Padillab, Everardo González |
| Copyright Year | 2005 |
| Abstract | The objectives of this research were to determine the effects of heat stress, milk production, and their interaction with management practices on pregnancy rates (GEST) in Holstein cows. Twenty three thousand nine hundred and twenty six (23,926) artificial insemination (AI) records from nine dairies in Ciudad Delicias city, State of Chihuahua, Mexico, were analyzed. For each increase unit in the monthly average temperature-relative humidity index (THI), GEST decreased in 0.7% (P 11,000 L had lower GEST (P 10,000 L had lower GEST than cows with lower PROD (P 72 (P 0.05). Multiparous cows had lower GEST at THIS >72, than primiparous (P 0.05). PROD was higher in cows with >2 calvings, those receiving BST, those under 3X systems, and those in large herds (P<0.01). |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.redalyc.org/pdf/613/61343206.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |