Radhi KS, Arif M, Rehman AU, Faizan M, Almohmadi NH, Youssef IM, Swelum AA, Suliman GM, Tharwat M, Ebrahim A, Abd El-Hack ME, Mahrose KM. Growth performance of broiler chickens fed diets supplemented with amylase and protease enzymes individually or combined.
Open Vet J 2023;
13:1425-1435. [PMID:
38107225 PMCID:
PMC10725294 DOI:
10.5455/ovj.2023.v13.i11.5]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/25/2023] [Indexed: 12/19/2023] Open
Abstract
Background
Feed additives that increase nutrient availability in feeds have gained a lot of interest.
Aim
An experiment was conducted to determine whether amylase, protease, and their combined supplementation affected broiler performance.
Methods
Two hundred eighty broiler chicks were selected and distributed randomly into 28 replicate pens with four treatment groups and seven replicates under a completely randomized design. A total of four diets were developed, having 0, 100, 100, and 100 + 100 g of control (AP0), amylase (A1), protease (P1), and amylase + protease (AP1)/ton of feed, respectively. Four replicates of each treatment were fed each diet. Each diet was randomly allotted to each group. Ad-libitum feeding was provided to the birds. The feeding program had starter and finisher diets. Upon completion of the experiment, three birds from each pen were slaughtered to analyze the carcass characteristics and organ weight.
Results
Differences were insignificant between 100 g/ton of amylase supplementation and FI, body weight gain (BWG), or feed conversion ratio (FCR) (p > 0.05). Supplementation with 10 0g/ton of protease did not significantly affect FI, BWG, and FCR (p > 0.05). Similarly, 100 + 100 g/ton of amylase + protease addition had no significant effect on FI, BWG, and FCR (p > 0.05). None of the treatments significantly affected carcass weight, abdominal fat percentage, dressing percentage, drumstick, wings, breast, and thigh weights (p > 0.05). In addition, there were no significant effects (p > 0.05) on the weight of the heart, liver, gizzard, and spleen.
Conclusion
In conclusion, amylase, protease, and their combined supplementation at a rate of 100 g/ton of feed did not influence BWG, FI, FCR, carcass characteristics, or organ weight.
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