Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

  • Print ISSN 0367-6722

  • Online ISSN 0976-0555

  • NAAS Rating 6.50

  • SJR 0.263

  • Impact Factor 0.5 (2023)

Frequency :
Monthly (January, February, March, April, May, June, July, August, September, October, November and December)
Indexing Services :
Science Citation Index Expanded, BIOSIS Preview, ISI Citation Index, Biological Abstracts, Scopus, AGRICOLA, Google Scholar, CrossRef, CAB Abstracting Journals, Chemical Abstracts, Indian Science Abstracts, EBSCO Indexing Services, Index Copernicus
Indian Journal of Animal Research, volume 50 issue 6 (december 2016) : 919-921

Effect of fibrolytic enzymes on serum testosterone level and some of carcass traits in Turkish Awassi male lambs

Khalid Dfeek Ahmed*
1<p>Euphrates Higher Basin Developing Center,&nbsp;University of Anbar/ Iraq, Iraq.</p>
Cite article:- Ahmed* Dfeek Khalid (2016). Effect of fibrolytic enzymes on serum testosterone level and someof carcass traits in Turkish Awassi male lambs . Indian Journal of Animal Research. 50(6): 919-921. doi: 10.18805/ijar.11475.

The study was conducted to investigate the effect of fibrolytic enzymes in diet of male Turkish Awassi lambs on the levels of testosterone and some carcass traits. The study included 12 male lambs, aged 4 months with an average body weight of 26±0.50 kg. The animals were divided into 3 equal groups with 4 animals / group. The first group (control C), was fed wheat straw ad libtum with concentrate ration in a ratio of 2 % of body weight on dry matter basis. The other groups were provided the same previous diet of the control group and supplemented with fibrolytic enzymes as 3 and 4g per animal per day for the second and third group respectively. The result showed a significant differences (P<0.05) in the level of testosterone between the 2nd group (3g of fibrolytic enzymes) and other groups. The weights of internal organs showed no significant differences (P<0.05) among male lambs of different groups. Group of 4g fibrolytic enzymes showed significant increase (P<0.05) in abdominal fat as compared with control groups. It was concluded from this study that addition of fibrolytic enzymes to the diet of male lambs in concentration of 3g has an effect on serum testosterone and have an effects on abdominal fat in a concentration of 4g. 

  1. Ibrahim, M.K.M. (1998). Breeding and Production of Sheep and Goats. Arab House for Publishing and Distribution.    Zagazig University. The first edition. Pp. 66.

  2. Al- Dairi, A.H.M. (2014). Effect of saccharomyces cerevisiae and fibrolytic enzyme administration on some productive, reproductive and biochemical traits of awassi ram lambs. Ph.D. Thesis, College of Veterinary Medicine, Baghdad University. 

  3. Al-Jassim, A.F. (1995). Studies of some aspects of post-natal growth in Arabi sheep. Ph.D.Thesis. College of Agriculture, Basrah University.

  4. Brito, L.F., Barth, A.D., Rawlings, N.C., Wilde, R.E., Crew,Jr. DH., Mir, P.S. and Kastelic, J.P. (2007). Effect of improved nutrition during calfhood on serum metabolic hormones, gonadotropins, and testosterone concentrations, and on testicular development in bulls. Domest Anim Endocrinol. 33:460–469.

  5. Duncan, D. (1955). Multiple range and multiple F-Test.Biometrics.11:1-24.

  6. FAO. (2011). Country(Iraqi) Pasture/Forage Resource Profiles by Tara, M. A. O. 

  7. Gado, H. M., Salem, A.Z., Robinson, P.H. and Hassan, M. (2009). Influence of exogenous enzymes on nutrient digestibility, extent of ruminal fermentation as well as milk production and composition in dairy cows. Anim. feed Scie. Technol. 154: 36-46.

  8. Juma, K.H. and Alkass , J.E. (2000). Sheep in Iraq. ACSAD /AS /P232/200.ACSAS. Damascus, Syria. 

  9. Mani, A.M.M. (2015). The Role Of Different Levels Of Fibrolytic Enzymes On The Performance Of Awassi Ram Lambs. Ph.D. Thesis, College of Veterinary Medicine, Baghdad University.

  10. Moustagard, J. (1969). Nutritive influences upon reproduction. Domestic Animals , By H.H Cole and P.T..Cupps, Academic Press. London. Pp:1(2) 30-35.

  11. Naser, O. (2009). Effects of source and level of protein on general performance of Assaf lambs. MS thesis. An Najah National University, Nablus, Palestine.

  12. Pendleton, B. (2000). The regulatory environment. In direct- fed microbial, enzyme and forage additive compendium. (S. Muirhea, ed). The Miller Publishing Co., Minnetonka, MN. Page 49. 

  13. SAS, (2004). SAS User’s guide: statistical system, Inc. Cary, NC. USA.

  14. Stone, C.W. (2006). Yeast products in the feed industry: A practical guide for feed professionals. Diamond V. Mills,Inc. Bulletin, Cedar Rapids, IA, USA : 1-16. 

  15. Pariza, M.W. and Cook, M. (2010). Determining the safety of enzymes used in animal feed. Regul. Toxicol. Pharmacol. 56: 332-342.

  16. Useni, B. A. (2011). Effect of exogenous fibrolytic enzymes on fibre and protein digestion in ruminant animals. M.Sc Thesis. Science in Agriculture (Animal Sciences). At Stellenbosch University.

  17. Vargas J.M., G.D. Mendoza, M. De la Salud Rubio-Lozanoand and F.A. Castrejón. (2013). Effect of exogenous fibrolytic enzymes on the carcass characteristics and performance of grain-finished steers. Anim. Nutr. and feed Technol . 13: 435-439.

  18. Yarney, T.A. and Stanford, L.M. (1990). Pubertal development of ram lamb Reproductive hormone concentration as indices of post pubertal reproductive function. Can. J. Anim. Sci.,70 :149 - 157. 

Editorial Board

View all (0)