Methionine-Supplemented Diet Increases the General Performance and Valueof Rahmani Lambs
الموضوعات :A.S. El-Tahawy 1 , A.M. Ismaeil 2
1 - Department of Animal Husbandry and Wealth Development, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
2 - Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Damanhour, Egypt
الکلمات المفتاحية: economics, growth, methionine, Rahmani lambs,
ملخص المقالة :
Essential amino acids such as methionine have been increasingly included into diets of lambs. However, few studies have determined the effects of methionine supplementation in the general performance and economic returns of lamb production. To address this question, 21weaned male Rahmani lambs were allotted to 3 dietary treatments: control diet (C), control diet plus 3.30 g of methionine/kg concentrate feed mixture (T1), and control diet plus 3.63 g of methionine/kg concentrate feed mixture (T2). T1-fed lambs showed significantly higher (P<0.05) total body weight gain than those fed diets C. The digestibility coefficients of dry matter (DM), organic matter (OM), crude protein (CP), ether extract, (EE), and nitrogen free extract (NFE) for T1 and T2 were significantly better (P<0.05) than for C. Economically, dietary feed T1 and T2 increased the net profit by 329.64 Egyptian pounds EGP/lamb and 305.76 EGP/lamb, respectively, as compared with the control diet. In addition, the economic efficiency (average feed cost/kg of body weight gain) was 10.02 for C and T1 and 10.48 for T2. Total costs were similar between the 3 dietary treatments. In conclusion, feeding growing Rahmani lambs with 3.30 g of methionine/kg concentrate feed mixture improved their growth performance and raised their economic value.
Abdelrahman M.M. and Hunaiti D.A (2008). The effect of dietary yeast and protected methionine on performance and trace minerals status of growing Awassi lambs. Livest. Sci. 115, 235-241.
Adriana F., Mendoza G., Pinos J.M., Plata F., Vega S. and Barcena R. (2009). Effects of rumen protected methionine on milk production of dairy goats. Italian J. Anim. Sci. 8, 271-275.
AOAC. (1995). Official Method of Analysis. Vol. I. 15PthPEd. Association of Official Analytical Chemists, Arlington, Virginia, USA.
AOAC. (2005). Official Method of Analysis. Vol. I. 18PthPEd. Association of Official Analytical Chemists, Arlington, Gaithersburg, MD.
Barakat M.A. and Saddick I.K. (1998). Effect of feeding methinonine supplementated ration to sheep: 1-Digestibility, nitrogen, and sulfur balances, body weight performance and wool characteristics. Minufiya. J. Agric. Res. 13(1), 13-19.
Cecava M.J., Merchen N.R., Berger L.L., Mackie R.I. and Fahey G.C. (1991). Effects of dietary energy level and protein source on nutrient digestion and ruminal nitrogen metabolism in steers. J. Anim. Sci. 69, 22-30.
El-Tahawy A.S. (2010). The prevalence of selected diseases and syndromes affecting Barki sheep with special emphasis on their economic impact. Small Rumin. Res. 90, 83-87.
Goedeken F.K., Klopfenstein T.J., Stock R.A., Britton R.A. and Sindt M.H. (1990). Protein value of feather meal for ruminants as affected by blood additions. J. Anim. Sci. 68, 29-36
Greenwood R.H. and Titgemeyer E.C. (2000). Limiting amino acid for growing Holstein steers limit-fed soybean hull based diets. J. Anim. Sci. 78, 1997-2004.
Lapierre H., Ouelle D.R. and Dopel L. (2009). Do you feed protein or amino acids to make milk. WCDS. Adv. Dairy Tech. 21, 175-189.
Mardiati Z., Sutardi T., Uryahadi S. and Ramli N. (2008). Effect of defaunation and supplementation methionine hydroxy analogue and branched chain amino acid in growing sheep diet based on palm press fiber ammoniated. Pakistan J. Nutr. 7(6), 813-816.
Mata G., Masters D.G., Liu S. and Gulati S.K. (2000). Responses to protected canola meal and methionine in grazing Merino weaners live weight and wool. Asian-australas. J. Anim. Sci. 13, 179-183.
Nolte J.E. and Ferreira A.V. (2005). The effect of rumen degradable protein level and source on the duodenal essential amino acid profile of sheep. South African. J. Anim. Sci. 35(3), 23-29.
Nolte J.E., Ferreira A.V., Nolte N.K., Petersen M.K. and Hallford D.M. (2004). Methionine, at least one branched chain amino acid, are limiting in lambs. Proc. West. Sect. Am. Soc. Anim. Sci. 55, 421-423.
Sankhyan L.P. (1983). Introduction to Farm Management. Tata MC-Grow Hill Publishing Company Limited New Delhi.
SAS (2002). Statistical Analysis System, Version 9.00. SAS Institute, Inc., Cary, NC.
Schwab C.G., Bozak C.K. and Nocek J.E. (1986). Change in amino acid pattern of soybean meal and corn gluten meal upon exposure to rumen fermentation. J. Anim. Sci. 63(1), 158-161.
Schwab C.G., Whitehouse N.L., Mc Laughlin A.M., Kadariya R.K.P., Stpierre N.R., Sloan B.K., Gill R.M. and Robert J.C. (2001). Use of milk protein concentrations to estimate the “m-
thionine bioavailability” of two forms of 2-hydroxyl-4 methylthio butanoic acid (HMB) for lactating cows. J. DairySci. 84(1), 146-151.
SPSS (2001). SPSS⁄PC + advanced statistics 4.0 for the IBM PC / XT / AT and PS / 2/ Marija J. Norusis. SPSS, Inc., New York.
Storm E. and Orskov E.R. (1984). The nutritive value of rumen microorganism in ruminants 4. The limiting amino acids of microbial protein in growing sheep determined by new approach. Br. J. Nutr. 52, 613-620.
Titgemeyer E.C., Merchen N.R. and Berger L.L. (1989). Evaluation of soybean meal, corn gluten meal, blood meal and fish meal as sources of nitrogen and amino acid disappearing from the small intestine of steers. J. Anim. Sci. 67, 262-266.
Van Soest P.J., Robertson J.B. and Lewis B.A. (1991). Methods for dietary fiber, neutral detergent fiber, and non starch polysaccharides in relation to animal nutrition. J. Dairy Sci. 74, 3583-3597.
