Influence of Dietary Protease on Growth Performance and Carcass Yield of Indian River Meat Broiler Chickens

The aim of the present study was to evaluate the effect of a multi-component dietary protease complex on the growth performance and carcass yields of commercial broiler chickens. A total of 630 Indian River broiler DOCs were considered and assigned to five dietary treatments namely: 1) Positive control (PC), a standard diet with no supplemental protease, 2) Negative control (NC), a diet similar to PC but reduced in CP, digestible EAA, and ME based on supplier’s nutrient matrix recommendation, 3) PC+125 ppm protease (PC+125), 4) NC+125 ppm protease (NC+125), and 5) NC+200 ppm protease (NC+200). The birds were fed experimental diets for 28 days. Body weight (BW), body weight gain (BWG), feed intake (FI), feed conversion ratio (FCR), and survival rate were recorded weekly. On day 28, three birds per treatment were sacrificed for carcass yield analysis. FI was similar among the treatment groups except in the 2nd week where broilers fed PC+125, NC+125, and NC+200 diets had significantly higher (P<0.05) FI than those fed the PC diet. In terms of BW and BWG, there were no differences among the treatment groups at 1st and 2nd weeks, however, at 3rd and 4th weeks, broilers fed the PC+125, NC+125, and NC+200 diets were significantly heavier (P<0.05) than those fed the PC and NC diets. A similar trend was also observed in FCR. Among the carcass yield parameters, the percentage weights of thigh, breast, and heart in birds fed the NC+200 diet were significantly increased (P<0.05) as compared to those fed the NC diet, while results for PC, PC+125, and NC+125 were intermediate between the two treatment groups. Overall, the results of present study demonstrated that the supplementation of protease complex either on a standard or reduced diet may improve the overall production performance of commercial broiler chickens and offers benefits on certain aspects of carcass yield.

[1]  R. Vieira,et al.  Effect of protease supplementation on the digestibility of amino acids in animal-origin meals for broiler diets , 2021 .

[2]  I. Andretta,et al.  Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease , 2019, Revista Brasileira de Zootecnia.

[3]  I. Kim,et al.  Addition of a protease to low crude protein density diets of broiler chickens , 2018 .

[4]  V. Ravindran,et al.  Interactive effects of dietary protein concentration, a mono-component exogenous protease and ascorbic acid on broiler performance, nutritional status and gut health , 2017 .

[5]  Jawad Al-juboori.  EFFECT OF PROTEASE SUPPLEMENTATION IN BROILER FEED ON GROWTH PERFORMANCE, CARCASS YIELD AND TOTAL NITROGEN RETENTION IN FECAL MATTER AND LITTER , 2017 .

[6]  A. Taghizadeh,et al.  Effects of a multi-enzyme on performance and carcass characteristics of broiler chickens fed corn-soybean meal basal diets with different metabolizable energy levels , 2015 .

[7]  N. Kamel,et al.  Effects of a Monocomponent Protease on Performance Parameters and Protein Digestibility in Broiler Chickens , 2015 .

[8]  P. Selle,et al.  Protease supplementation of sorghum-based broiler diets enhances amino acid digestibility coefficients in four small intestinal sites and accelerates their rates of digestion , 2013 .

[9]  Z. Skrbic,et al.  Enzymes in broiler diets with special reference to protease , 2013 .

[10]  R. Tauson,et al.  Effects of a xylanase and protease, individually or in combination, and an ionophore coccidiostat on performance, nutrient utilization, and intestinal morphology in broiler chickens fed a wheat-soybean meal-based diet. , 2012, Poultry science.

[11]  F. Yan,et al.  Effects of protease supplementation on broiler performance and in vitro protein digetibility. , 2012 .

[12]  M. Fischer,et al.  A Feed Serine Protease Improves Broiler Performance and Increases Protein and Energy Digestibility , 2011 .

[13]  C. R. Angel,et al.  Effects of a monocomponent protease on performance and protein utilization in 7- to 22-day-old broiler chickens. , 2011, Poultry science.

[14]  C. R. Angel,et al.  Performance and nutrient utilization of broilers fed diets supplemented with a novel mono-component protease , 2011 .

[15]  T. Applegate.  Protein and Amino Acid Requirements for Poultry , 2008 .

[16]  B. Yu,et al.  Effects of enzyme inclusion in a maize–soybean diet on broiler performance , 2007 .

[17]  Athar Mahmud,et al.  ENZYMES IN POULTRY NUTRITION , 2006 .

[18]  R. Sah,et al.  Supplementation of Corn-Soybean Based Broiler’s Diets with Different Levels of Acid Protease , 2005 .

[19]  S. Ghazi,et al.  Improvement of the nutritive value of soybean meal by protease and a-galactosidase treatment in broiler cockerels and broiler chicks , 2003, British poultry science.

[20]  S. Ghazi,et al.  The potential for the improvement of the nutritive value of soya-bean meal by different proteases in broiler chicks and broiler cockerels , 2002, British poultry science.

[21]  B. Slominski,et al.  The effects of protease and carbohydrase supplementation on the nutritive value of canola meal for poultry : In vitro and in vivo studies , 1996 .

[22]  S. Twining.  Fluorescein isothiocyanate-labeled casein assay for proteolytic enzymes. , 1984, Analytical biochemistry.

[23]  Sidney A. Williams,et al.  Official Methods of Analysis of the Association of Official Analytical Chemists , 1971, Soil Science Society of America Journal.