FIXED-INTERVAL CONDITIONED FEED INTAKE IN SWINE AND CATTLE
نویسندگان
چکیده
منابع مشابه
Posters CATTLE RESIDUAL FEED INTAKE CANDIDATE GENES
One option that can be used to select cattle for improving feed efficiency is to select for genes affecting residual feed intake. Previous studies using two groups of cattle, the Trangie Angus residual feed intake (RFI) selection line cattle and the Davies Jersey x Limousin gene mapping cattle have identified five chromosomal regions or QTL that have significant effects on net feed efficiency. ...
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Feed intake is determined by many interacting factors and prediction of feed intake is the “Achilles heel” of diet formulation. Many different diet characteristics interact with environment and physiological state of cows, making it difficult to predict feed intake accurately. However, understanding the factors controlling feeding allows us to manipulate diets to optimize feed intake. Eating is...
متن کاملMolecular basis for residual feed intake in beef cattle.
Feed provision is one of the greatest costs of beef production and, with the increasing costs of feed, will remain so for the foreseeable future. Improvement in efficiency has the potential to not only increase profits for cattle producers, but also to decrease the environmental footprint of beef cattle production. Both are important in addressing the challenges of increasing feed costs and lan...
متن کاملBayesian analysis of the effect of selection for residual feed intake on growth and feed intake curves in Yorkshire swine.
Gompertz growth functions were fitted to longitudinal measurements of daily feed intake (DFI) and BW of 586 boars and 495 gilts from a selection experiment in Yorkshire pigs for residual feed intake (RFI). The selection experiment consists of a line selected for low residual feed intake (LRFI) for 5 generations and a randomly selected control line (CTRL). The objectives of this study were to us...
متن کاملWhole genome single nucleotide polymorphism associations with feed intake and feed efficiency in beef cattle.
Feed intake and efficiency are economically important traits because feed is the greatest variable cost in beef production. Feed efficiency can be measured as residual feed intake (RFI), which is the difference between actual DMI of an animal and the expected DMI based on its BW and growth rate. Feed conversion ratio (FCR) is the inverse of gross feed efficiency and is the ratio of DMI to ADG. ...
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ژورنال
عنوان ژورنال: Canadian Journal of Animal Science
سال: 1987
ISSN: 0008-3984,1918-1825
DOI: 10.4141/cjas87-030