Performance of broiler chicks as affected by using poultry by–product meal and probiotic supplementation
Abstract: Six hundred one day old unsexed Arbor Acres broiler chicks were used to study the effect of using different levels of poultry by – product meal (PBPM) and Bio – Top ( B ) as a probiotic on broiler performance , digestion coefficient of nutrients and economic efficiency . Five substitution levels of PBPM as well as two levels of probiotic were used in 5 x 2 factorial arrangement. These levels were 0 , 10 , 20 , 30 , and 40 % of dietary crude protein , while the levels of Bio –Top were 0.0 ( B0 ) and 0.1 % of the diet ( B1 ) . Broilers were divided into 10 treatments, each containing 60 birds in 3 replicates. Birds were fed from 1 – 4 weeks of age on grower diets containing 23 % crude protein ( CP ) and 3100 K.cal ME / Kg diet, while from 5 – 7 weeks of age they were switched on finisher diets which containing 20 % CP and 3200 K.cal ME / Kg diet. Broiler chicks were reared in litter floor pens under similar conditions of management up to 7 weeks of age.
The results showed that feeding broiler chicks on diets including either 30 or 40 % PBPM substitution level improved significantly (P < 0.05) the average values of body weight, body weight gain , feed conversion ratio , protein efficiency ratio and performance index compared with chicks either fed on control diet or those having different levels of PBPM substitution during both growing and overall periods. Also, adding the probiotic (Bio – Top) to broiler chick diets improved significantly ( P < 0.05) broiler performance . On the other hand , the average values of feed intake were not affected due to using either PBPM or the probiotic Bio - Top . There were no mortalities due to any of the experimental treatments throughout the experimental period. Moreover, no improvement had been detected in either nutrients digestibility coefficients or nitrogen balance values due to using different levels of PBPM substitution While, adding Bio–Top improved significantly (P<0.05) nitrogen balance and nutrients digestibility coefficients values except the crude fiber. At the same time, adding the probiotic to broiler chick diets caused relatively considerable improvement in the economic efficiency especially when it was added to the diets with either 30 or 40% of PBPM substitution level of dietary crude protein.
(Keywords: Broilers, poultry by product, probiotic, performance, economic efficiency)
Publication year 2002
Pages 745-761
Availability location معهد بحوث الانتاج الحيوانى - شارع نادى الصيد- الدقى - الجيزة
Availability number
Organization Name
City الاسكندرية
serial title Egyptian Poultry Science
Author(s) from ARC
External authors (outside ARC)
    ممدوح عمر عبد السميع جامعة القاهرة
Agris Categories Animal feeding
AGROVOC
TERMS		 Broiler chickens. Byproducts. Digestion. Economic analysis. Performance testing. Probiotics.
Proposed Agrovoc poultry by product;
Publication Type Journal
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