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Influence of Energy Balance on Reproductive Performance and Milk Production of Dairy Cows at Pre-partum and Early Lactation Periods

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Author(s): K.B.M. Nishany | S. Ramachandra | M.B.P. Kumara Mahipala | V.P. Jayawardane | M.P.B. Wijayagunawardane

Journal: International Journal of Animal and Veterinary Advances
ISSN 2041-2894

Volume: 5;
Issue: 3;
Start page: 98;
Date: 2013;
Original page

Keywords: BHBA | Conception rate | NEFA | open days | Postpartum | Pre-partum

ABSTRACT
The objective of this study was to evaluate the influence of energy balance in dairy cows at pre-partum and early lactation periods on their subsequent reproductive and productive performance. High producing, Ayrshire cows were randomly selected from the heavy pregnant, dry cow herd of Ambewela dairy farm in Up-Country, Sri Lanka. The serum NEFA (non esterifie fatty acid) and milk BHBA (beta hydroxyl butyric acid) concentrations were used as indicators of energy status of the cows. Days for the first AI, open days and conception rate were used to evaluate the reproductive performance. Sub-clinical ketosis (milk BHBA≥200 µmol/L) was recorded among 25 and 31.25% cows at 5 days pre-partum and during 100 days post-partum periods, respectively. Further, they took significantly longer period to reach the first AI and showed significantly greater (p
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