Fattening Chickens by Feeding Estrogens
نویسندگان
چکیده
منابع مشابه
Evaluation of the Nutritional Value of Ammoniated Wheat Straw by Anhydrous Ammonia in Fattening Calves Feeding
Extended Abstract Introduction and Objective: Processing of agricultural by-products for animal feed can upgrade the supply of animal feed without increasing the current production and only by improving productivity via enhancing energy efficiency and maintaining it in the food supply chain, and at the same time, diminish the concerns of waste management, food security, resource constraints, a...
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Short description: In Bavaria, feeding cattle with maize silage is a common method, which is practiced even in for maize unfavorable locations. With increasing feed costs a partial substitution of maize by grass silage could be economically reasonable. Especially against the background of bioenergy production from cereals and maize, a competitive situation can evolve and grass as feedstuff can ...
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Contrary to a commonly held belief that broiler chickens need more space, there is increasing evidence that these birds are attracted to other birds. Indeed, commercially farmed birds exhibit a range of socially facilitated behaviours, such as increased feeding and preening in response to the presence of other birds. Social facilitation can generate feedback loops, whereby the adoption of a par...
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1. Male chickens, I week old, were fed alternately for 6 or 12 h periods with diets complementary in their amino acid composition. The isonitrogenous, isoenergetic diets were based on fish meal or sunflower meal as the sole source of protein, or fish meal-sunflower (40:60, w/w); each diet contained 120 g crude protein/kg. Other groups of chickens were given these diets ad lib. 2. Net protein ut...
متن کاملChanges in concentration and fractions of blood serum proteins of chickens during fattening
This paper describes research into concentration of total proteins and individual protein fractions in the blood serum of Ross broiler chickens during fattening period. Blood for analysis was taken at the 14th, 28th and 42nd days of age by wing vein puncture. Concentration of total serum proteins was detected by spectrophotometry. Electrophoresis on gelled cellulose-acetate tapes determined the...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1945
ISSN: 0032-5791
DOI: 10.3382/ps.0240483