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Haplotypic variation in the UCP1 gene is associated with milk traits in dairy cows
(American Dairy Science Association, 2016-10-03)
Uncoupling protein-1 (UCP1) plays a role in the regulation of body temperature, metabolic rate and energy expenditure in animals. While variation in UCP1 and its phenotypic effect has been investigated in humans and sheep, ...
Efficiency of use of metabolizable energy for body weight gain in pasture-based, nonlactating dairy cows
(Elsevier on behalf of the American Dairy Science Association, 2014-07)
Four cohorts of nonlactating, pregnant dairy cows (n=50, 47, 45, and 42) were individually fed indoors to determine the amount of feed required for body weight (BW) gain from autumn pasture and commonly used supplementary ...
Technical note: Nitrogen isotopic fractionation can be used to predict nitrogen-use efficiency in dairy cows fed temperate pasture
(Oxford University Press on behalf of the American Society of Animal Science, 2013-12)
The objective of this study was to investigate the relationship between nitrogen isotopic fractionation (δ¹⁵N) and nitrogen-use efficiency (milk nitrogen/nitrogen intake; NUE) in pasture-fed dairy cows supplemented with ...
Requirements for zero energy balance of nonlactating, pregnant dairy cows fed fresh autumn pasture are greater than currently estimated
(Elsevier on behalf of the American Dairy Science Association, 2013-06)
Fifty-three nonlactating, pregnant Holstein-Friesian and Holstein-Friesian × Jersey cross dairy cows were grouped into 4 cohorts (n = 15, 12, 13, and 13) and offered 1 of 3 allowances of fresh, cut pasture indoors for 38 ...