Animal and Veterinary Sciences
Volume 3, Issue 5, September 2015, Pages: 144-148
Received: Aug. 1, 2015;
Accepted: Aug. 8, 2015;
Published: Sep. 14, 2015
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Getahun Kebede Yadete, Ruminant Livestock Research, Debre Zeit Agricultural Research Center, Debre Zeit, Ethiopia
This study was aimed to determine the optimum dietary crude protein for fattening yearling Arsi-Bale sheep. Thirty-two intact male lambs (live weight=17.53±1.57 kg) were randomly assigned to five iso-caloric (2.12 Mcal/kg DM) dietary treatments (T), varying in crude protein: 9.4% CP (T1), 10.2% CP (T2), 11% CP (T3), 12% CP (T4) and 13.1% CP (T5). Intake and growth trial lasted for 87 days, followed by digestibility trial and carcass analysis. Treatments did not differ (P>0.05) in DM intake, ranging from 918.29 (T1) to 928.09 g DM/day (T3). Crude protein intake increased (P<0.001) with increase in dietary CP (T1, 86.71 g/day; 120g/day - T5). Intake of fiber fractions was highest (P<0.001) with 12% CP diet. Treatments varied in apparent digestibility of DM (P<0.05), CP (P<0.05), NDF (P<0.001) and ADF (P<0.001). Average final live weight, total gain and daily gain of lambs were increased non-significantly (P>0.05) from 22.71 to 23.96 kg; 5.37 to 6.35kg; 61.78-73.00 g/day, respectively. Feed conversion ratios were higher (P<0.001) in lambs fed 12%CP diet (12.61) and 13% CP diet (12.76). Urinary nitrogen and total nitrogen excretion were highest for 13% CP diet (5.02 and 9.19 g/day; P<0.001). Nitrogen balance was peaked (12.70 g/day, P<0.001) with 12% CP diet. There was no significant differences (P>0.05) among treatments in slaughter weight, hot carcass weight, DP, fat and bone proportions. However, hot carcass weight increased from 8.8 to 9.8kg and DP from 39.4 to 42.15, with feed CP increase to 12%. The results of this study indicated that optimum dietary CP for improved growth and feed utilization of yearling Arsi-Bale lambs, growing from 17 to 25 kg is 12% at the specified dietary energy. Suggested, detail study, applying "comparative slaughter technique" is warranted to support the present findings.
Getahun Kebede Yadete,
Optimum Dietary Crude Protein Level for Fattening Yearling Arsi-Bale Lambs, Animal and Veterinary Sciences.
Vol. 3, No. 5,
2015, pp. 144-148.
Abebe Tafa & Solomon Melaku & Kurt J. Peters. 201Supplementation with linseed (Linum usitatissimum) cake and/or wheat bran on feed utilization and carcass characteristics of Arsi - Bale sheep. Trop Anim Health Prod (2010) 42:677–68.
Ahn BH, Moon YH (1985). Effect of dietary protein and calcium levels on nutrition in sheep I. Effect of dietary protein and calcium levels on digestibility, nitrogen balance and some mineral retention in sheep. Kor. J. Anim. Sci. 27:507-51.
Andrews, R. P., Orskov, E. R., 1970. The nutrition of early weaned lamb. I. The influence of protein concentration and feeding level on rate of gain in body weight. J. Agric. Sci. (Camb.) 75, 11-1.
AOAC (Association of Official Analytical Chemists), 1990. Official method of analysis.15th ed. AOAC Inc., Arlington, Virginia, USA. pp. 12-9.
CSA (Central Statistic Authority) of Ethiopia, 201Agricultural sample survey 2014.Vol.II. Report on livestock and livestock characteristics (Private peasant holdings). 194p.
Ermias Tekletsadik. 2008. The Effect of Supplementation with barely bran, linseed meal and their mixtures on the performance of Arsi-Bale sheep fed a basal diet of faba bean haulms. MSc Thesis. Haramaya University, Ethiopia.
FAO (Food and Agricultural Organization of the United Nations), 2004. FAOSTAT data. http://www.faostat.fao.org/faostat/collections?subset=agriculture.
Getahun Kebede and Kassahun Melese, 2010. Evaluation of poultry litter as substitute of urea in urea molasses block on growth and carcass characteristics of finished lamb. Ethiopian Journal of Animal Production (EJAP). Vol.10;No.,201Pp: 19-3.
Getahun Kebede Yadete. Effect of Concentrate Supplementation on Performances of Ethiopian Lowland Afar and Blackhead Ogaden Lambs. Animal and Veterinary Sciences. Vol. 2, No. 2, 2014, pp. 36-41. doi: 10.11648/j.avs.20140202.14.
Haddad, S. G., R. E. Nasr & M. M. Muwalla, 2001.Optimum dietary crude protein level for finishing Awassi lambs. Small Ruminant Research, 39, 41−4.
Hwangbo Soon, Sun Ho Choi, Sang Woo Kim, Dong Soo Son, Ho Sung Park1Sung Hoon Lee2 and Ik Hwan Jo. 2009. Effects of Crude Protein Levels in Total Mixed Rations on Growth. Performance and Meat Quality in Growing Korean Black Goats. Asian-Aust. J. Anim. Sci. Vol. 22, No. 8: 1133 – 113.
Kearl, L. C., 1982. Nutrient Requirements of Ruminants in Developing countries. International Feedstuffs Institute, Utah State University, Logan, Utah 84322, USA.
Keser, O., T. Bilal and H. Cankutay, 2008. The effect of different dietary crude protein level on performance and serum immunoglobulin g in male Kivircik lambs. Bulgarian Journal of Veterinary Medicine (2008), 11, No 1, 49−5.
Marinova, P., Y. Banskalieva, S. Alexandrov, V. Tzvetkova and H. Stanchev. 2001. Carcass composition and meat quality of kids fed sunflower oil supplemented diet. Small Ruminant. Res. 42:217-22.
Mohammad Sharifi, Moslem Bashtani, Abbas Ali Naserian, Hamid Khorasani, 2013. Effect of dietary crude protein level on the performance and apparent digestibility of Iranian Saanen kids. African Journal of Biotechnology Vol. 12(26), pp. 4202-420.
Mourad, M., G. Gbanamou and L. B. Balde. 2001. Carcass characteristics of West African dwarf goats under extensive system. Small Ruminant. Res. 42:81-8.
NRC (National Research Council), 1985. Nutrient Requirements of Sheep. Sixth Revised Edition. Washington, D.C; National Academic Press.
Osuagwuh, A. I. A., and A. O. Akinsoyinu, 1990. Efficiency of nitrogen utilization by pregnant West African dwarf goats fed various leveles of crude protein in the diet. Small Ruminant Research, volume 3, Issue 4, July 199Pages 363-37.
Paul, S. S., A.B. Mandal, G. P. Mandal, A. Kannan and N. N. Pathak., 2003. Deriving nutrient requirements of growing Indian sheep under tropical conditions usin performance and intake data emanated from feeding trials conducted in different research institutes. Small Rumin. Res. 50: 97-10.
SAS (Statistical Analysis System).2003. SAS Institute. Inc., Cary, NC, USA.
Titi, H. H., M. J. Tabbaa, M. G. Amasheh, F. Barakeh & B. Daqamseh, 2000. Comparative performance of Awassi lambs and black goat kids on different crude protein levels in Jordan. Small Ruminant Research, 37, 131−13.
Van Soest. P. J., Robertson, J. B., Lewis, B. A, 1991. Methods for dietary fiber, neutral detergent fiber and non-starch polysaccharides in relation to animal nutrition. J. Dairy Sci. 74, 3583-359.