Feed Restriction in Broiler Breeder Pullets: Skip-a-Day Versus Skip-Two-Days
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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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 کاملthe effect of the feed deprivation periods on total immunuglobolins production and lymphocytes percentage in pullets and cockerels of broiler breeder
the aim of the present study was to compare different periods of feed deprivation (day number of starvation in four physical feed restriction programs) on total immunuglobulins and lymphocytes percentage in pullets and cockerels of broiler breeder. a 4x2 factorial experiment based on a completely random design. 160 pullets and 160 cockerels of broiler breeder. feed intake content weekly was the...
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....
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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ژورنال
عنوان ژورنال: Poultry Science
سال: 1988
ISSN: 0032-5791
DOI: 10.3382/ps.0670809