HEAT PRODUCTION OF SKIP-A-DAY AND DAILY FED BROILER BREEDER PULLETS
نویسندگان
چکیده
منابع مشابه
Growth heterogeneity in broiler breeder pullets
Uniform growth is a desirable trait in all large-scale animal production systems because it simplifies animal management and increases profitability. In parental broiler flocks, so-called broiler breeders, low growth uniformity is largely attributed to the feed competition that arises from quantitatively restricted feeding. As feed restriction is crucial to maintaining healthy and fertile breed...
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In each of two experiments with young, feed-restricted broiler breeder pullets, the effects of differences in dietary protein intake on intestinal development and growth were studied. All pullets were restrict-fed either a 15 or 19% CP diet to see whether differences in dietary protein would influence intestinal growth in the face of controlled exposure to coccidiosis. In each experiment, pulle...
متن کاملModeling metabolizable energy utilization in broiler breeder pullets.
The objective of this study was to determine models for ME requirements for broiler breeder pullets using the factorial method. The influence of the temperature on maintenance ME requirements was determined by experiments conducted in three environmental rooms with temperature kept constant at 15,22, and 30 degrees C, using the comparative slaughter technique. The energy requirements for weight...
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An experiment was conducted to study the effect of broiler breeder feeding management practices on pullet performance, BW uniformity, and carcass traits during rearing (to 22 wk of age). At 3 wk of age, 1,200 Ross 308 breeder pullets were assigned to one of 5 treatments: 1) control: standard mash diet, fed daily; 2) high fiber: mash diet containing 25% lower nutrient density, fed daily; 3) scat...
متن کاملAn examination of the role of feeding regimens in regulating metabolism during the broiler breeder grower period. 2. Plasma hormones and metabolites.
A trial was conducted to determine the effects of different feeding regimens on plasma hormone and metabolite levels in 16-wk-old broiler breeder pullets. A flock of 350 Cobb 500 breeder pullets was divided in 2 at 28 d of age and fed either every day (ED, 5 pens of 35 birds) or skip-a-day (SKIP, 5 pens of 35 birds) from 28 to 112 d of age. Total feed intake did not differ between the 2 groups....
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ژورنال
عنوان ژورنال: Canadian Journal of Animal Science
سال: 1990
ISSN: 0008-3984,1918-1825
DOI: 10.4141/cjas90-078