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Effect Of Protease Supplementation In Broiler Feed On Growth Performance, Carcass Yield And Total Nitrogen Retention In Fecal Matter And Litter, Jawad Al-Juboori
Effect Of Protease Supplementation In Broiler Feed On Growth Performance, Carcass Yield And Total Nitrogen Retention In Fecal Matter And Litter, Jawad Al-Juboori
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ABSTRACT
The objectives of this study were to determine the effects of protease supplementation on commercial broiler performance, carcass yield, and nitrogen retention in fecal matter and litter. Total of 4,800 female (Ross 708) birds split into 96 floor pens, and randomly assigned to one of four treatment groups. Birds were placed within 96, 5’x10’ floor pens in a randomized-block design at the SFASU Poultry Research Center. Birds were randomly divided among the pens at a stocking density of 1.00 ft2/bird (50 birds/pen*24 pens/treatment=1200 birds/treatment), and reared for 49 days on used pine shavings. The target average weight for the …