Estimation of L-threonine requirements for Longyan laying ducks
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چکیده
منابع مشابه
Estimation of L-threonine requirements for Longyan laying ducks
OBJECTIVE A study was conducted to test six threonine (Thr) levels (0.39%, 0.44%, 0.49%, 0.54%, 0.59%, and 0.64%) to estimate the optimal dietary Thr requirements for Longyan laying ducks from 17 to 45 wk of age. METHODS Nine hundred Longyan ducks aged 17 wk were assigned randomly to the six dietary treatments, where each treatment comprised six replicate pens with 25 ducks per pen. RESULTS...
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Threonine requirements of different broiler genotypes.
The objectives of this work were to study the responses of one Leghorn and two broiler stocks and sexes to different levels of Thr and to estimate their requirements for this amino acid. All experiments were conducted with birds from 1 to 18 d of age. Body weight gain (BWG) and feed consumption were measured on the eighteenth day, and feed conversion ratio (FCR) was calculated. At Day 18, three...
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ژورنال
عنوان ژورنال: Asian-Australasian Journal of Animal Sciences
سال: 2016
ISSN: 1011-2367,1976-5517
DOI: 10.5713/ajas.16.0235