Effect of Dietary Saturated and Unsaturated Fats on Body Performance and Accumulation of Abdominal in Broiler Chickens
الموضوعات :Y. Mohammadi 1 , J. Yousefi 2 , H. Darmani kuhi 3 , M. Ahmadi 4
1 - Department of Animal Science,IlamUniversity,Ilam, Iran
2 - Department of Animal Science, Islamic AzadUniversity,Ilam Branch, Ilam, Iran
3 - Department of Animal Science, Universityof Guilan, Rasht, Iran
4 - Department of Animal Science, Islamic AzadUniversity,Ilam Branch, Ilam, Iran
الکلمات المفتاحية: broilers, carcass quality, live weight gain, saturated, tallow and soybean oil,
ملخص المقالة :
Two hundred eighty days old male broiler chicks(Ross strain) were randomly distributed into seven groups with four replicates (10 birds in each replicate) and were fed diets supplemented with different dietary fat sources.The results indicated that the different dietary treatments did not affect weight gain, feed intake and feed conversion ratio at 21 d (P>0.05). However, addition of dietary fats to diets increased body weight gain and improved feed conversion ratio in grower (22-42 d) and whole period (7-42 d) of the experiment (P<0.01). Chicks fed diets supplemented with 6% of tallow or soybean oil and 3% tallow+3% soybean oil had the most body weight gain and the best value for feed conversion ratio(P<0.01). There were no significant differences between carcass characteristics (except for abdominal fat pad) due to dietary treatments (P>0.05). Increasing the dietary fat level increased significantly abdominal fat pad deposition (P<0.01). Abdominal fat pad deposition was significantly higher in birds fed diets supplemented with dietary fats than in those fed control diet(P<0.01).
Calislar S. and Aydin R. (2006). The effect of animal bone fat on body performance and carcass characteristics in broilers. Int. J. Poult. Sci. 5, 1057-1060.
Ghazalah A.A., Abd-Elsamee M.O. and Ali A.M. (2008). Influence of dietary energy and poultry fat on the response of broiler chicks to heat therm. Int. J. poult. Sci. 7, 355-359.
Leeson S. and Atteh J.O. (1995). Utilization of fats and fatty acids by turkey poults. Poult. Sci. 74, 2003-2010.
Newsholme E.A. and Leech A. (1984). Biochemistry for Medical Sciences. John Wiley and Sons, New York.
Peebles E.D., Zumwalt C.D., Doyle S.M., Gerard P.D., Latour M.A., Boyle C.R. and Smith T.W. (2000). Effects of dietary fat type and level on broiler breeder performance. Poult. sci. 79, 629-639.
Pesti G.N., BakalliR.I., Qiao M. and SterlingK.G. (2002). A comparison of eight grades of fats as broiler feed ingredients. Poult. Sci. 81, 382-390.
Roush W.B., Cravener T.L., Kochera Kirby Y. and Wideman R.F. (1997). Probabilistic Neural Network Prediction of Ascites in Broilers Based on Minimally Invasive Physiological Factors. Poult. Sci. 76, 1513-1516.
SAS Institute. (1996). SAS®/STAT Software, Release 6.11. SAS Institute, Inc., Cary, NC.
Salle C.T.P., Guahyba A.S., Wald V.B., Silva A.B., Salle F.O. and Nascimento V.P. (2003). Use of artificial neural networks to estimate production variables of broilers breeders in the production phase. Br. Poult. Sci. 44, 211-217.
Snaz M., Flores A., Perez de Ayala P. And Lopez-Bote C.J. (1999). Higher lipid accumulation in broilers fed on saturated fats than in those fed on unsaturated fats. Br. Poult. Sci. 40, 95-101.
Snaz M., Lopez-Bote C.J., Menoyo D. and Bautista J.M. (2000). Abdominal fat deposition and fatty acid synthesis are lower and β-oxidation is higher in broiler chickens fed diets containing unsaturated rather than saturated fat. J. Nutr. 130, 3034-3037.
Wiseman J. and SalvadorF. (1991). The influence of free fatty acid content and degree of saturation on the apparent metabolizable energy value of fats fed to broilers. Poult. Sci. 70, 573-582.
Zhang Q., Yang S.X., Mittal G.S. and Yi S. (2002). Prediction of performance indices and optimal parameters of rough rice drying using neural networks. Biosystems Eng.83, 281-290.
