Subscribe Now Subscribe Today
Research Article

Reproductive Performance of Kivircik Ewes on Accelerated Lambing Management

Mehmet Koyuncu
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

The aim of the study was to determine the effects of accelerated lambing scheme of three lambing in two years. Ewes were bred at 8 month intervals; July (J), March (M) and November (N). Lambing rates for J, M and N were found 89.6, 90.5 and 92.2%, respectively. Litter size at birth in J (1.56) and M (1.54) differed (p<0.01) with respect to N (1.31). Lamb survival at weaning in J (94.7%) was higher (p<0.05) than M (90.4%) and N (91.3%). Weaning rate was affected (p<0.01) by breeding date; N-ewes had fever lambs weaned than J and M-ewes. In general, both prolificacy and weaning rate were consistently higher (p<0.05) as ewe`s age increased. This accelerated lambing scheme generated a ewe productivity, on an annual basis, of 1.33±0.07 lambing, a litter size of 1.77±0.22 at birth and 1.66±0.21 at weaning. Considering the July values as those representing an annual breeding, the accelerated lambing scheme increased lamb production 15% at birth and 19% at weaning. The results indicated that Kivircik ewes have a good potential for production systems requiring improved prolificacy or accelerated lambing management.

Related Articles in ASCI
Similar Articles in this Journal
Search in Google Scholar
View Citation
Report Citation

  How to cite this article:

Mehmet Koyuncu , 2005. Reproductive Performance of Kivircik Ewes on Accelerated Lambing Management. Pakistan Journal of Biological Sciences, 8: 1499-1502.

DOI: 10.3923/pjbs.2005.1499.1502


1:  Keskin, M., O. Bicer and S. Gul, 2002. Sik kuzulatma sistemleri. MKU Ziraat Fak. Derg., 7: 89-94.

2:  Robinson, T.J., 1980. Programmed year-round sheep breeding. Aust. J. Exp. Agric. Anim. Husb., 210: 667-673.

3:  Vesely, J.A., 1978. Application of light control to shorten the production cycle in two breeds of sheep. Anim. Product., 26: 169-176.

4:  Notter, D.R. and J.S. Copenhaver, 1980. Performance of Finnish Landrace ewes under accelerated lambing. I. Fertility, prolificacy and ewe productivity. J. Anim. Sci., 51: 1033-1042.

5:  Fogarty, N.M., G.E. Dickerson and L.D. Young, 1984. Lamb production and its components in pure breeds and composite lines. I. Seasonal and other environmental effects. J. Anim. Sci., 58: 285-299.

6:  Urrita, J., O. Manuel, A. Cesar, H. Meza and C. Mancilla, 2001. Reproductive performance of Merino Rambouillet ewes under three cycles of accelerated lambing. Wool Technol. Sheep Breed., 49: 193-201.

7:  Walton, P. and H.A. Robertson, 1974. Reproductive performance of Finnish Landrace ewes mated twice yearly. Can. J. Anim. Sci., 54: 35-40.

8:  Hulet, C.V., M. Shelton, J.R. Galagher and D.A. Proce, 1974. Effects of origin and environment on reproductive phenomena in Rambouillet ewes. II. Lamb production. J. Anim. Sci., 38: 1218-1223.

9:  Vesely, J.A. and E.E. Swiersta, 1985. Year-round breeding of crossbred Dorset or Finnish Landrace ewe using a synthetic light regimen. J. Anim. Sci., 61: 329-336.

10:  Hunston, J.E., 1983. Production of Fine-Wool ewes on tear long rangeland in West Texas. II. Effects of supplemental feed and breeding frequency on reproductive rate. J. Anim. Sci., 56: 1277-1281.

11:  Land, R.B. and T.H. McClelland, 1971. The performance of Finn-Dorset sheep allowed to mate four times in two years. Anim. Product., 13: 637-641.

12:  Sormunen-Cristian, R. and M. Suvela, 1999. Out of season lambing of Finnish Landrace ewes. Small Ruminant Res., 31: 265-272.

13:  Bindon, B.M. and L.R. Piper, 1976. Assessment of new and traditional techniques of selection for reproduction rate. Proceeding of the International Congress, (IC`76), Sheep Breed, Muresk, pp: 357-371.

14:  Derycke, G., J.L. Bister and R. Paquay, 1990. Reproductive capacity in rams: Effect of season and breed. Abstracts. Proceedings of the 41st Annual Meeting of European Association of Animal Production, Jul. 9-12, Toulouse, France, pp: 244-244.

15:  Anonymous, 1988. SAS/STAT, Users Guide. Version 6.03, SAS Institute, Cary, NC.

©  2020 Science Alert. All Rights Reserved