Relationship between changes in body condition and postpartum fertility in crossbred Cows Holstein x Cebu
Abstract
A monthly evaluation of body build and postpartum estrous and fertility interdependence was performed to 152 Holstein-Zebu creole cows distributed into 5 milk herds under similar management and exploitation conditions in Camagüey province during 1998. Body build at pregnancy last stage and 30; 60 and 90 days after calving was estimated by a five-point scale. Herd effects on body build, and body build effects on estrous and pregnancy were determined. Body build was influenced by herd, and it showed a regular decrease up to 90 days after calving according to the herd sampled. The best body build registered at pregnancy last stage and 90 days after calving influenced ovarian cycle activity (P< 0,01) and fertility (P< 0,001). Body build from pregnancy last stage on and other factors role which can affect postpartum reproductive behavior should be monthly evaluated.
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References
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