Protein and Sulfur Amino Acid Requirements of Broiler Breeder Hens
نویسندگان
چکیده
منابع مشابه
Dietary methionine source and level affect hepatic sulfur amino acid metabolism of broiler breeder hens
A study was carried out to investigate the effects of dietary methionine source and level on plasma free amino acids patterns and the expression of genes involved in hepatic methionine metabolism in broiler breeders. A total of 2184 broiler breeders were assigned to 13 dietary treatments, with eight replicates per treatment. The 13 treatments included one control group and 12 additional treatme...
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A study was conducted to investigate Fe requirements of broiler breeders. One-hundred-fifty-six Cobb 500 broiler breeder hens were individually placed in electrostatically painted cages at 22 weeks. The study was composed of an adaptation phase, in which hens were fed corn-soy-wheat bran diets until 35 wks. An Fe deficient mash diet (24.6 ppm Fe) was provided from 35 to 46 wk in order to induce...
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in this experiment two pre-laying broiler breeder pullets from ross strain at 17 weeks of age were selected, weighed and allocated in layer cages. surgery was achieved to implant a jugular vein catheter. the birds were placed individually in metabolic chamber. each bird was fed, in random order, test diets containing one of nine levels of lysine (0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.8, 1.0 and 1.5 ...
متن کاملEstimates of Methionine and Sulfur Amino Acid Requirements for Laying Hens using Different Models
This experiment was conducted to evaluate the effects of dietary methionine (Met) content on the performance of white commercial laying hens and to determine Met and total sulfur amino acids requirements (TSAA). These requirements were estimated using three statistical models (broken-line regression, exponential and second order equations) to evaluate their abilit to determine amino acid requir...
متن کاملProtein and Energy Requirements of Laying Hens and Broiler Breeders
Layer and Breeder rations are still evaluated, as a rule, on the basis of their protein content, expressed as "percent protein". This is the easiest and most practical criterion, but unfortunately it is a relative measure, depending on general feed consumption. The latter hardly relates to the productive traits of the hen, being dependent primarily on the energy content of the feed and on the e...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1980
ISSN: 0032-5791
DOI: 10.3382/ps.0590470