Prepartum nutritional strategy affects reproductive performance in dairy cows
نویسندگان
چکیده
منابع مشابه
Relationship of BCS Prepartum with Reproductive Performance and Lipomobilization in Holstein Dairy Cows
Received: Revised: Accepted: Published online: September 16, 2016 January 05, 2017 February 04, 2017 March 11, 2017 Body condition score (BCS) changes and non-esterified fatty acids (NEFA) are good indicators for measuring lipomobilization during the transition period. The aim of this study was to establish the possible correlation between cows with a higher BCS during this period and their rep...
متن کاملEpidemiology of reproductive performance in dairy cows.
The objectives of this presentation are to review results of our previous and on-going research with respect to the risk factors and consequences of poor reproductive performance in dairy cows, and to develop an economic framework to optimize decisions related to dairy cow reproductive performance. To make profitable breeding and replacement decisions, the farmer must account for factors includ...
متن کاملEffect of protein level in prepartum diets on metabolism and performance of dairy cows.
Multigravid Holstein cows (n = 75) were used in a randomized block design to evaluate the effect of prepartum diets formulated to supply surplus energy and incremental concentrations of protein on the nutritional status of dairy cows at parturition. Cows were blocked according to expected calving date and assigned to one of five diets: 9.7, 11.7, 13.7, 14.7, and 16.2% crude protein (CP). Dietar...
متن کاملPerForMance in Dairy cows
• Blood growth hormone (GH) concentrations increase shortly after calving. • Greater blood GH coordinates nutrient partitioning; the process through which nutrients are preferentially targeted for milk production. Blood insulin and insulin-like growth factor (IGF)-I remain low when blood GH concentrations increase. • Blood GH concentrations are elevated in cows in negative energy balance. Blood...
متن کاملNutritional interactions with reproductive performance in dairy cattle.
Increased capability for milk production has been associated with a decline in fertility of lactating cows. Nutritional requirements increase rapidly with milk production after calving and result in negative energy balance (NEBAL). NEBAL delays the time of first ovulation through inhibition of LH pulse frequency and low levels of blood glucose, insulin and insulin-like growth factor-I (IGF-I) t...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2013
ISSN: 0022-0302
DOI: 10.3168/jds.2013-6759