Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Reproductive Performance of Three Iranian Sheep Breeds

  • Kiyanzad, M.R. (Animal Science Research Institute of Iran) ;
  • Panandam, J.M. (Animal Science Department, Universiti Putra Malaysia) ;
  • Emamjomeh Kashan, N. (Animal Science Department, Aborihan Educational Center, Tehran University,Varamin) ;
  • Jelan, Z.A. (Animal Science Department, Universiti Putra Malaysia) ;
  • Dahlan, I. (Animal Science Department, Universiti Putra Malaysia)
  • Received : 2002.05.14
  • Accepted : 2002.08.27
  • Published : 2003.01.01
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Abstract

To evaluate the ewe reproductive performances of three Iranian local sheep breeds, namely Moghani, Chal and Zel, 27 rams and 473 ewes were used as the foundation flock in a crossbreeding program. The three breeds were crossed amongst themselves reciprocally. Ram breed and ewe breed showed a two-way interaction on apparent fertility. The Zel ewes showed higher fertility than the Chal and Moghani ewes (94.4 vs 77.3 and 84.6%). Prolificacy among main and individual mating groups were not significantly different (p>0.05). Zel ewes were 22.3 and 14.8% more reproductive (p<0.05) than Chal and Moghani ewes, respectively. Zel and Moghani ewes showed higher (p<0.05) ewe productivity than Chal ewes. Ram breed had a significant (p<0.05) effect on ewe efficiency. The Zel rams were not completely successful to mate with Chal ewes, this caused a to way-interaction between ram and ewe breeds. The Zel ewes mated with Chal and Moghani rams showed 26.1 and 28.5% more efficiency than those mated with Zel rams. This observation strongly supports the use of crossbreeding to improve the efficiency of the Zel ewes. With decreasing lamb mortality, through supplemented feeding of lambs in pre-weaning period, and increasing litter weight, through crossbreeding, it should be possible to improve the efficiency of Zel ewes even better than Chal and Moghani ewes. Small body size of Zel ewes that needs the lower maintenance requirements would be a well advantageous to using Zel ewes as the dam herd to produce commercial lambs in north area of Iran.

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References

  1. Bourdon, R. M. 2000. Understanding Animal Breeding. Prentice Hall, Inc USA.
  2. FAO. 1998. Food and agriculture organization of the united nations. Quarterly Vol. 11.
  3. Gabina, D. 1995. Genetic improvement of mutton sheep. Cahiers Options Mediterraneennes 6:87-99.
  4. Gatenby, R. M., M. Doloksaribu, G. E. Bradford, E. Romjali, A. Batubara and I. Mirza. 1997. Comparison of Sumatra sheep and three hair sheep crossbreds. II. Reproductive performance of F1 ewes. Small Ruminant Research. 25(2):161-167. https://doi.org/10.1016/S0921-4488(96)00968-6
  5. Iman, N. Y. and A. L. Slyter. 1996. Lifetime lamb and wool production of Targhee or Finn-Dorset-Targhee ewes managed as farm or range flock: I. Average annual ewe performance. J. Anim. Sci. 74(8):1757-1764. https://doi.org/10.2527/1996.7481757x
  6. Kiyanzad, M. R. 1999. Application of ultrasound and body measurements for prediction of carcass physical and chemical components of live Iranian sheep. Project report, Animal Science Research Institute of Iran.
  7. Klewiec, J. and M. Gabryszuk. 1996. The effect of different proportions of Merino in the genotype of Merino${\times}$Booroola crossbreds. Prace I Materialy Zootechniczne 48:7-16.
  8. Mavrogenis, A. P. 1996. Environmental and genetic factors influencing milk and growth traits of Awassi sheep in Cyprus. Heterosis and maternal effects. Small Ruminant Research 20(1):59-65. https://doi.org/10.1016/0921-4488(95)00782-2
  9. Monem, M. and E. Esmailiy-Rad. 1981. Recognition of Iranian sheep (Moghani sheep). Project report, Animal Science Research Institute of Iran.
  10. Nawaz, M., M. Khan, M. Qureshi and E. Rasool. 1998. productive and reproductive performance of Kajli and Lohi ewes. Asian-Aust. J. Anim. Sci. 11:176-184. https://doi.org/10.5713/ajas.1998.176
  11. NRC. 1985. Nutrient Requirement of Sheep. National Academy Press, Washington, DC.
  12. Osfoori, R. and L. Fesus. 1996. Genetic relationships of Iranian sheep breed using biochemical genetic marker. Arch. Tierz. Dumme Rstorf 39(1):33-46.
  13. SPSS. 1999. SPSS for Windows. Release 10.05, Standard version. Inc., 1989-1999.
  14. Yalcin, B. 1979. The breeds of Afghanistan, Iran and Turkey. FAO/UNEP project FP/1108-79-02 (833).