Responses of Cobb × Cobb 500 broilers to dietary amino acid density regimens
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چکیده
منابع مشابه
Valine needs in starting and growing Cobb (500) broilers.
Two independent experiments were conducted with male Cobb × Cobb 500 broilers to determine the optimal valine-to-digestible-lysine ratio for broiler development. We conducted a randomized block experiment with 7 treatments, each with 8 replicates of 25 starter birds (8 to 21 d of age) and 20 finisher (30 to 43 d of age) birds. To prevent any excess of digestible lysine, 93% of the recommended l...
متن کاملPerformance and carcass characteristics of Cobb × Cobb 500 slow-feathering male broilers fed on dietary programs having stepwise increases in ideal protein density
The Cobb × Cobb 500 slow-feathering male is a fast early-growth broiler grown under variable feeding programs and amino acid (AA) densities. An experiment was conducted using diets with increased ideal protein densities in a feeding program of 1 to 7 d, 8 to 21 d, 22 to 35d, and 36 to 42 d. Diets had ratios between essential digestible (D) AA and DLys (DAA:DLys) as follows: TSAA, 75%; DThr, 65%...
متن کاملThe Effect of Energy Sources and Levels on Performance and Breast Amino Acids Profile in Cobb 500 Broiler Chicks
The present study conducted to investigate the effect of energy sources and levels on performance and breast meat amino acids profile in Cobb 500 broiler chicks. A total of 600 1-day-old Cobb 500 broiler chicks with an average weight of 39 ± 0.50 g were randomly divided into five treatments. Each treatment was further divided into four replicates. Chicks were fed a basal diet based on corn and ...
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S 11 ABSTRACTS OF PAPERS, 88th Annual Meeting of the Virginia Academy of Science, May 20 21, 2010, James Madison University Harrisonburg, VAS OF PAPERS, 88th Annual Meeting of the Virginia Academy of Science, May 20 21, 2010, James Madison University Harrisonburg, VA Aeronautical and Aerospace Sciences TRACING THE GROWTH OF THE U.S. NAVY AVIATION. M. Leroy Spearman. Langley Research Center, Ham...
متن کاملCharacterization of Citrus Rootstock Responses to Tylenchulus semipenetrans (Cobb).
Citrus rootstocks which significantly limited the reproduction of Tylenchulus semipenetrans (Cobb) "Citrus" and "Poncirus" biotypes responded to infection by producing a hypersensitive-type response in the root hypodermis, wound periderm and/or cavities in the root cortex, and/or abnormal vacuoles in nurse cell cytoplasm. Rootstocks which limited nematode reproduction also had significantly few...
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ژورنال
عنوان ژورنال: Journal of Applied Poultry Research
سال: 2010
ISSN: 1056-6171
DOI: 10.3382/japr.2010-00172