Factors affecting wool characteristics of Kari sheep in Pakistan

The present study attempted to generate some basic information on wool production and quality in the Kari breed. Thirty flocks, 10 each in the 3 Union Councils (UCs), were registered for on-farm performance recording in the Lotkho Tehsil, north of Chitral city. Two animals per flock were selected for collecting fleece samples from 3 yearly shearings. The actual greasy wool yield per sheep was 937 g. Wool yield per shearing averaged 366 ± 9.6 g. Location and flock differences were found significant (P < 0.01). The same was also true for the clean fleece yield with an overall average of 300 ± 8.2 g per shearing. The fibre diameter averaged 23 ± 0.2 µm, and flock differences were significant (P < 0.01). The staple length varied among flocks (P < 0.01), locations, and shearing season (P < 0.05). Male Kari had more medulated fibres than female Kari (6.9 ± 0.37% vs. 5.5 ± 0.37%). The greasy and clean fleece yields were quite repeatable traits (repeatability > 0.5). The repeatability estimates of fibre diameter and staple length were 0.38 and 0.20, respectively. Sheep of 3-4 years of age had maximum fleece yield, while there was a declining trend thereafter. As the area is not approachable during winter season, research and developments efforts can be effective if nuclei could be established in the Lotkho area.

Factors affecting wool characteristics of Kari sheep in Pakistan

The present study attempted to generate some basic information on wool production and quality in the Kari breed. Thirty flocks, 10 each in the 3 Union Councils (UCs), were registered for on-farm performance recording in the Lotkho Tehsil, north of Chitral city. Two animals per flock were selected for collecting fleece samples from 3 yearly shearings. The actual greasy wool yield per sheep was 937 g. Wool yield per shearing averaged 366 ± 9.6 g. Location and flock differences were found significant (P < 0.01). The same was also true for the clean fleece yield with an overall average of 300 ± 8.2 g per shearing. The fibre diameter averaged 23 ± 0.2 µm, and flock differences were significant (P < 0.01). The staple length varied among flocks (P < 0.01), locations, and shearing season (P < 0.05). Male Kari had more medulated fibres than female Kari (6.9 ± 0.37% vs. 5.5 ± 0.37%). The greasy and clean fleece yields were quite repeatable traits (repeatability > 0.5). The repeatability estimates of fibre diameter and staple length were 0.38 and 0.20, respectively. Sheep of 3-4 years of age had maximum fleece yield, while there was a declining trend thereafter. As the area is not approachable during winter season, research and developments efforts can be effective if nuclei could be established in the Lotkho area.

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  • Tabbaa, M.J., Al-Azzawi, W.A., Campbell, D.: Variation in fleece characteristics of Awassi sheep at different ages. Small Rumin. Res., 2001; 41: 95-100.
  • Siddiqi, K.A.: Marketing and grading of wool in Pakistan. Proc. International Workshop on Sheep and Wool, Islamabad, Pakistan, 1982; pp: 114-136.
  • Gizaw, S., Lemma, S., Komen, H., van Arendonk, J.A.M.: Estimates of genetic parameters and genetic trends for live weight and fleece traits in Menz sheep. Small Rumin. Res., 2007; 70: 145-153.
  • Khusro, M., Van der Werf, J.H.J., Brown, D.L., Ball, A.: Across flock (co)variance components for faecal worm egg count, live weight, fleece traits for Australian Merinos. Lives. Prod. Sci., 2004; 91: 35-43.
  • Bromley, C.M., VanVleck, L.D., Snowder, G.D.: Genetic correlation for litter weight weaned with growth, prolificacy, and wool traits in Columbia, Poly pay and Targhee sheep. J. Anim. Sci., 2001; 79: 339-346.
  • Okut, H., Bromley, C.M., VanVleck, L.D., Snowder, G.D.: Genotypic expression at different ages: II Wool traits of sheep. J. Anim. Sci., 1999; 77: 2366-2371.
  • Khan, M.F., Ahmad, W., Khan, M.S.: Study of some important characteristics of wool from certain well known sheep breeds in Pakistan. In Proc. Regional Seminar on Small Ruminants. PARC, Islamabad Pakistan (November 1-3), 1994; pp: 97-103. Iman N.Y., Johnson, C.L., Russel, W.C., Stobart, R.H.: Estimation of genetic parameters for wool fibre diameter measures. J. Anim. Sci., 1992; 70: 1110-1115.
  • Olivier, W.J., Olivier, J.J.: The effect of nutritional stress on the wool production potential of strong and fine wool Merino sheep. S. Afr. J. Anim. Sci., 2005; 35: 273-281.
  • Zubair, M., Habib, G., Ahmad, N.: Comparative study on wool quality in sheep reared at livestock research station Jaba and Lalazar alpine pasture. J. Anim. Vet. Advanc., 2006; 5: 641-646.
  • Ozcan, M., Ekiz, B., Yilmaz, A., Ceyhan, A.: Genetic parameter estimates for lamb growth traits and greasy fleece weight at first shearing in Turkish Merino sheep. Small Rumin. Res., 2005; 56: 215-222.
  • Konstantinov, K.V., Brien, F.D., Greeff, J.C.: Estimation of additive and dominance variances in wool production traits of western Australian Merino sheep. 7th world congress on genetics applied to livestock production, August 19-23, Montpellier, France, 2002; # 12-02.
  • Greeff, J.C., Schlink, A.C.: Genetic variation of Merino wool felting. 7th World Congress on Genetics Applied to Livestock Production, August 19-23, Montpellier, France, 2002; # 12-03.
  • Wahid, A.: General pattern of production, breeds, management, disease nutrition, performance and problems. Proc. Int. Workshop on Sheep and Wool, Islamabad, Pakistan, 1982; 11- 40.
  • Al-Azzawi, W.A.: A comparative study of fleece characteristics in Iraqi sheep. M. Sc. Thesis. Faculty of Agriculture, Cairo University, Egypt, 1977; pp:112.
  • Teasdale, D.S. Wool Testing and Marketing Handbook. Kensington, NSW, Australia, 1988; 48-61.
  • Ingham, V.M., Ponzoni, R.W.: Genetic parameters for reproduction and fleece traits for South Australian Merino sheep. 7th world congress on genetics applied to livestock production, August 19-23, Montpellier, France, 2002; # 12-04.
  • Olivier, J.J., Bezuidenhout, A.G., Greyling, A.C., Cloete, S.W.P.: Evaluation of genetically fine and fine x strong wool Merinos on irrigated pastures. S. Afr. J. Anim. Sci., 2000; 30: 113-114.
  • Groenewald, P.G.J., Olivier, J.J.: Habitability estimates for Merino sheep obtained from a national progeny test. S. Afr. J. Anim. Sci., 1999; 29: 174-178.
  • Ashmawi, G.M., El-Azzawy, W.: Effect of age, locality and system of husbandry on fleece characteristics of Arabi sheep. Egypt. J. Anim. Prod., 1980; 20: 179-187.
  • Bunge, R., Thomas, D.L., Nash, T.G., Lupton, C.J.: Performance of hair and prolific wool breeds of sheep in Southern Illinois: Wool production and fleece quality. J. Anim. Sci., 1995; 74: 25- 30.
Turkish Journal of Veterinary and Animal Sciences-Cover
  • ISSN: 1300-0128
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK