Zanaty, G., El-Rahman, S., El-Naga, M. (2019). INFLUENCE OF DIETARY SUPPLEMENTATION WITH SOME ENZYMES ON THE PERFORMANCE OF CHICKENS. Menoufia Journal of Animal Poultry and Fish Production, 3(3), 101-102. doi: 10.21608/mjapfp.2019.174837
G. A. Zanaty; S.A.A. Abd El-Rahman; Manal K. Abou El-Naga. "INFLUENCE OF DIETARY SUPPLEMENTATION WITH SOME ENZYMES ON THE PERFORMANCE OF CHICKENS". Menoufia Journal of Animal Poultry and Fish Production, 3, 3, 2019, 101-102. doi: 10.21608/mjapfp.2019.174837
Zanaty, G., El-Rahman, S., El-Naga, M. (2019). 'INFLUENCE OF DIETARY SUPPLEMENTATION WITH SOME ENZYMES ON THE PERFORMANCE OF CHICKENS', Menoufia Journal of Animal Poultry and Fish Production, 3(3), pp. 101-102. doi: 10.21608/mjapfp.2019.174837
Zanaty, G., El-Rahman, S., El-Naga, M. INFLUENCE OF DIETARY SUPPLEMENTATION WITH SOME ENZYMES ON THE PERFORMANCE OF CHICKENS. Menoufia Journal of Animal Poultry and Fish Production, 2019; 3(3): 101-102. doi: 10.21608/mjapfp.2019.174837
INFLUENCE OF DIETARY SUPPLEMENTATION WITH SOME ENZYMES ON THE PERFORMANCE OF CHICKENS
1Prof. of Poultry Nutrition, Fac. of Agric., Menoufia Univ.
2Assistant Prof. of Poultry Nutrition, Fac. of Agric., Menoufia Univ.
Abstract
The present study was conducted at a private Farm, Shebin EL - Kom, Minoufia Governorate, Egypt, in order to investigate the effect of polyzyme* (multi enzymes) in broiler diets with low protein levels on growth performance, carcass traits, some blood components and economic efficiency. A total of 180 Ross 308 unsexed one - day old broiler chicks, were distributed at random into 3 groups each in 3 replicates, 20 chicks each.
Treatments were: T1: positive control, without Polyzyme, T2: negative control, without Polyzyme and T3: negative control, with o.5 g Polyzyme*/ kg diet through the starter (1 - 21 d) and finisher (22 - 35 d) period. The results indicated that: 1- Body weight, body weight gain and performance index were improved significantly ( P ≤ 0.05) with addition of polyzyme (0.5g/ kg diet). 2- Daily feed intake decreased significantly ( P ≤ 0.05) with addition of polyzyme. 3- Feed conversion ratio, performance index and European efficiency index were improved significantly ( P ≤ 0.05) with supplementation of polyzyme. 4- Polyzyme addition significantly (P ≤ 0.05) increased Dressing, liver and heart%, while Gizzard % was not affected. 5- Polyzyme supplementation to low protein diet led to decreased serum total cholesterol and increased aspartic transaminase (AST) enzyme compared to the positive control. 6- Total protein, creatinine, glucose and alanine transaminase (ALT) enzyme were not affected by polyzyme supplementation. 7- In general, The obtained results in the present investigation are encouraging and indicated that supplementation of 0.5g polyzyme/ kg diet can be used in broiler diets with low protein level to get heaviest weight, best feed conversion, performance index, European efficiency index and economic efficiency.
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