reevaluation of the digestible lysine requirement of arian male broiler chicks by different diets with cottonseed meal
نویسندگان
چکیده
an experiment was conducted to reevaluate the digestible lysine requirement of arian male broilers by comparing the performance of chicks fed different levels of cottonseed meal (csm) on a total amino acid (aa) versus a digestible aa basis. four hundred and thirty two (432) arian male broiler chicks were allotted to 18 treatments with four repli-cates of six chicks each in a completely randomized block design in a factorial arrange-ment with two factors (two levels of digestible lysine nine different diets). the first of the eighteen treatments was the corn and soybean meal control diet based on previously de-termined digestible lysine requirement for maximum body weight gain. diets 2 to 5 con-tained 5, 10, 15 or 20% csm, respectively and were formulated to contain levels of total aa equivalent to those in the first treatment. diets 6 to 9 contained the same levels of csm as diets 2 to 5 but the diets were formulated to be equal in digestible aa content to the first treatment. treatments 10 to 18 were the same as treatments 1 to 9, but on the ba-sis of determined digestible lysine requirement for maximum feed efficiency. formulating diets containing csm on a digestible aa basis resulted in an improvement in chick per-formance compared to those formulated on a total aa basis (p
منابع مشابه
digestible lysine requirement of arian male and female broiler chicks during six to twenty-one days of age
an experiment was conducted to determine the dietary digestible lysine requirement of male and female broiler chickens (arian) during the period from 6 to 21 days post-hatching. an amino acid-fortified basal diet containing corn and soybean meal as intact protein sources provided 20 % cp, and 3200 kcal amen / kg. in this experiment 150 male and 150 female chicks were allocated on the basis of b...
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عنوان ژورنال:
journal of agricultural science and technologyناشر: tarbiat modares university
ISSN 1680-7073
دوره 9
شماره Number 3 2010
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