Hydrolysed feather protein as a source of amino acids for broilers

Publisher Website
Google Scholar
Abstract
1. The inclusion of 25 g hydrolysed feather meal (HFM) in each kilogram of diet (floor experiment) and 60 g/kg (cage experiment) did not depress performance. 2. Chemical tests indicated 72.5% of the total lysine in HFM was available. 3. Total lysine concentration of 11.3 g/kg diet maximised performance during the period 0 to 34 d. 4. Reduction in dietary methionine content during the period 0 to 34 d from 4.2 g/kg to 3.2 g/kg did not depress performance on diets containing 60 g HFM/kg. 5. The results indicate that at least 57% by weight of the total sulphur amino acid requirement of broilers can be provided by cystine.