نتایج جستجو برای: intact cockerels
تعداد نتایج: 75920 فیلتر نتایج به سال:
Determining the age of bird remains after cessation growth is challenging due to absence techniques such as tooth eruption and wear available for mammals. Without these techniques, it difficult reconstruct hunting strategies, husbandry regimes, wider human–animal relationships. This paper presents a new method, developed from collection (n = 71) known-age specimens domestic fowl (Gallus gallus ...
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...
An effective method for genetic modification of chickens has yet to be developed. An efficient technology, enabling production of transgenic birds at high frequency and with reliable expression of transgenes, will have many applications, both in basic research and in biotechnology. We investigated the efficiency with which lentiviral vectors could transduce the chicken germ line and examined th...
The effects of four dosages of conjugated equine estrogens (Premarin) on atherogenesis and on plasma, liver and bile lipids were studied in cockerels maintained on a high-fat, high-cholesterol diet. A lowering effect, not dosedependent, occurred in plasma linoleic and linolenic acid. An augmentative effect, varying with dose, occurred in plasma phospholipids, plasma palmitic, stearic and oleic ...
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