- Volume 21 Issue 11
DOI QR Code
Effect of Lowering Dietary Protein with Constant Energy to Protein Ratio on Growth, Body Composition and Nutrient Utilization of Broiler Chicks
- Kamran, Z. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
- Sarwar, M. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
- Nisa, M. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
- Nadeem, M.A. (Animal Nutrition, Animal Science Institute, National Agriculture Research Centre) ;
- Ahmad, S. (Department of Poultry Science, University of Agriculture) ;
- Mushtaq, T. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
- Ahmad, T. (Faculty of Veterinary and Animal Sciences, PMAS Arid Agriculture University) ;
- Shahzad, M.A. (Institute of Animal Nutrition and Feed Technology, University of Agriculture)
- Received : 2007.10.09
- Accepted : 2008.03.17
- Published : 2008.11.01
A trial was conducted to determine the effect of low crude protein (CP) diets with constant metabolizable energy to crude protein (ME:CP) ratio on growth, body composition and nutrient utilization of broiler chicks from 1 to 26 days of age. Four dietary treatments having four levels of CP and ME as 23, 22, 21 and 20% and 3,036, 2,904, 2,772 and 2,640 kcal/kg, respectively, were formulated and a ME:CP ratio of 132 was maintained in all the diets. Digestible lysine was maintained at 1.10 of the diet. A total of 1,760 day-old Hubbard broiler chicks were randomly divided into 16 experimental units and each diet was offered to four experimental units at random. Feed intake was increased (p<0.05) while weight gain and feed conversion ratio were adversely affected (p<0.05) when the diets with low CP and ME were fed to broilers. Total protein intake and total ME intake were linearly decreased (p<0.05) and protein efficiency ratio and energy efficiency ratio were lower (p<0.05) than in the chicks fed dietary regimen with 22% CP and 2,904 kcal/kg ME. The whole body analysis of the birds revealed that chicks fed the lowest dietary regimens retained less (p<0.05) nitrogen and more ether extract than chicks fed the control diet, however, body dry matter, total body ash and fat free body protein were not affected. Similarly, protein and energy utilization were also unaffected by the dietary treatments. In summary, chicks fed low CP diets with constant ME:CP ratio grew slower, used feed less efficiently and retained less protein and more body fat than chicks fed the control diet.
- Beitz, D. C. 1985. Physiological and metabolic systems important to animal growth: An overview. J. Anim. Sci. 61:1-20.
- Bregendahl, K., J. L. Sell and D. R. Zimmerman. 2002. Effect of low protein diets on growth performance and body composition of broiler chicks. Poult. Sci. 81:1156-1167. https://doi.org/10.1093/ps/81.8.1156
- Cheng, T. K., M. L. Hamre and C. N. Coon. 1997a. Effect of environmental temperature, dietary protein, and energy levels on broiler performance. J. Appl. Poult. Res. 6:1-17. https://doi.org/10.1093/japr/6.1.1
- Cheng, T. K., M. L. Hamre and C. N. Coon. 1997b. Responses of broilers to dietary protein levels and amino acid supplementation to low protein diets at various environmental temperatures. J. Appl. Poult. Res. 6:18-33. https://doi.org/10.1093/japr/6.1.18
- Chung, T. K. and D. H. Baker. 1992. Ideal amino acid pattern for 10-kilogram pigs. J. Anim. Sci. 70:3102-3111. https://doi.org/10.2527/1992.70103102x
- AOAC. 1990. Official methods of analysis. 16th ed. Association of official analytical chemists, Arlington, VA
- Aletor, V. A., I. I. Hamid, E. Niess and E. Pfeffer. 2000. Low protein amino acids supplemented diets in broiler chickens: Effects on performance, carcass characteristics, whole body composition and efficiencies of nutrient utilization. J. Sci. Food Agric. 80:547-554. https://doi.org/10.1002/(SICI)1097-0010(200004)80:5<547::AID-JSFA531>3.0.CO;2-C
- Steel, R. G. D., J. H. Torrie and J. D. Dickey. 1997. Principles and procedures of statistics: A biometrical approach. 3rd. ed. McGraw-Hill Book Co., New York.
- Jackson, S., J. D. Summers and S. Leeson. 1982. Effect of dietary protein and energy on broiler carcass composition and efficiency of nutrient utilization. Poult. Sci. 61:2224-2231. https://doi.org/10.3382/ps.0612224
- Kamran, Z., M. Sarwar, M. Nisa, M. A. Nadeem, S. Mahmood, M. E. Babar and S. Ahmed. 2008. Effect of low protein diets having constant energy-to-protein ratio on performance and carcass characteristics of broiler chickens from one to thirty-five days of age. Poult. Sci. 87:468-474. https://doi.org/10.3382/ps.2007-00180
- Leeson, S., J. D. Summers and L. Caston. 1993. Growth response of immature brown-egg strain pullet to varying nutrient density and lysine. Poult. Sci. 72:1349-1358. https://doi.org/10.3382/ps.0721349
- Sell, J. L., R. Hasiak and W. J. Owings. 1985. Independent effects of dietary metabolizable energy and protein concentrations on performance and carcass characteristics of tom turkeys. Poult. Sci. 64:1527-1535. https://doi.org/10.3382/ps.0641527
- Sizemore, F. G. and H. S. Siegel. 1993. Growth, feed conversion, and carcass composition in females of four broiler crosses fed starter diets with different energy levels and energy to CP ratios. Poult. Sci. 72:2216-2228. https://doi.org/10.3382/ps.0722216
- Fancher, B. I. and L. S. Jensen. 1989. Dietary protein level and essential amino acid content: Influence upon female broiler performance during the grower period. Poult. Sci. 68:897-908. https://doi.org/10.3382/ps.0680897
- Emmans, G. C. 1994. Effective energy: A concept of energy utilization applied across species. Br. J. Nutr. 71:801-821. https://doi.org/10.1079/BJN19940188
- Firman, J. D. and S. D. Boling. 1998. Ideal protein in turkeys. Poult. Sci. 77:105-110. https://doi.org/10.1093/ps/77.1.105
- Golian, A. and D. V. Maurice. 1992. Dietary poultry fat and gastrointestinal transit time of feed and fat utilization in broiler chickens. Poult. Sci. 71:1357-1363. https://doi.org/10.3382/ps.0711357
- Griffiths, L., S. Leeson and J. D. Summers. 1977. Influence of energy system and level of various fat sources on performance and carcass composition of broilers. Poult. Sci. 56:1018-1026. https://doi.org/10.3382/ps.0561018
- Hakansson, J., S. Erikson and S. Skensson. 1978. Reports 58 and 59, Dept. of Anim. Husbandry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
- Hidalgo, M. A., W. A. Dozier III, A. J. Davis and R. W. Gordon. 2004. Live performance and meat yield responses to progressive concentrations of dietary energy at a constant metabolizable energy-to-crude protein ratio. J. Appl. Poult. Res. 13:319-327. https://doi.org/10.1093/japr/13.2.319
- Hubbard. 2004. Management guide for broiler. Hubbard L. L. C., Duluth GA 30096 - USA.
- Tang, M. Y., Q. G. Ma, X. D. Chen and C. Ji. 2007. Effects of dietary metabolizable energy and lysine on carcass characteristics and meat quality in Arbor Acres broilers. Asian-Aust. J. Anim. Sci. 20:1865-1873. https://doi.org/10.5713/ajas.2007.1865
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