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Current IssueEditorial BoardOnline First ArticlesArchive

volume 49 issue 1 (february 2015) : 40-43,   Doi: 10.5958/0976-0555.2015.00008.4

Genetic studies on wool production traits in Rambouillet crossbred sheep in J & K State, India

N
Nusrat N. Khan
N
Nishant Kumar
A
A.K. Das*
D
Dibyendu Chakraborty
R
R.K. Taggar
P
Parul Gupta
1Division of Animal Genetics and Breeding, FVSc & AH, SKUAST-J, R.S. Pura, Jammu- 181 102, India.
Cite article:- Khan N. Nusrat, Kumar Nishant, Das* A.K., Chakraborty Dibyendu, Taggar R.K., Gupta Parul (2025). Genetic studies on wool production traits in Rambouillet crossbred sheep in J & K State, India. Indian Journal of Animal Research. 49(1): 40-43. doi: 10.5958/0976-0555.2015.00008.4.

ABSTRACT

Data on 4186 lambs pertaining to 94 rams of Rambouillet and their crosses over the ten years (1998-2007) at Government Sheep Breeding and Research Farm, Reasi, Jammu, were studied. The averages were 1.49±0.009 kg, 5.52±0.02 cm and 21.25±0.01 µ for greasy fleece weight (GFW), staple length (SL) and fiber diameter (FD) respectively. The highest CV (%) was observed for greasy fleece weight where as the lowest CV (%) was observed for fiber diameter. The least-squares means were 1.51±0.02 kg, 5.64±0.04 cm and 21.27±0.03 µ for greasy fleece weight, staple length, and fiber diameter respectively. The effect of year of lambing had significant effect (Pex.

REFERENCES

  1. Becker W A. (1975). Manual of Quantitative Genetics. 3rd Edition, Washington State University, Washington, USA.
  2. Cardellino R A, Osorio J C S and Uerreiro J L. (1986). Genetic parameters selection indices and environmental effects on Corriedale ewes in Southern Brazil. Animal Breeding Abstract, 59:1782.
  3. Chopra A, Gowane G R, Prakash V and Arora A L. (2010). Evaluation of wool quality attributes of Bharat Merino sheep. Indian Veterinary Journal, 87: 1003-1005.
  4. Dickson W F and Lush J L. (1933). Inbreeding and the genetic history of the Rambouillet sheep. American. Journal of Heredity, 24:19–33.
  5. Dixit S P, Singh G and Dhillon J S. (2011). Genetic and environmental factors affecting fleece traits in Bharat Merino sheep. Indian Journal of Animal Sciences, 81: 80-83.
  6. Harvey W R. (1990). User’s guide for LSMLMW PC-2 version mixed model- Least squares and Maximum Likelihood Computer Program Mincograph. Columbia, Ohio, USA.
  7. Hultz F S and Hill J A. (1931). Range Sheep and Wool in the Seventeen Western States. Wiley New York.
  8. Kramer C Y. (1957). Extension of multiple range test to group-correlated adjusted means. Biometrics, 13: 13-18.
  9. Lee J W, Waldron D F and Veck L D. (2000). Parameter estimates for birth weight and greasy fleece weight in Rambouillet sheep. Journal of Animal Science, 78:2108-2112.
  10. Mir M Y, Risam K S, Kirmani M A and Gani T A S. (2000). Genetic and environmental factors influencing greasy fleece yield in a closed flock of Corriedale sheep. Indian Journal of Animal Sciences, 70 (5): 540-542.
  11. Mishra A K, Arora A L, Kumar S and Prince L L L. (2009). Effect of back crossing of Garole x Malpura halfbreds with Malpura on growth and wool yield. Indian Veterinary Journal, 86: 628-630.
  12. Snedecor G W and Cochran W G. (1994). Statistical methods. 8th Ed. Iowa State University Press, Ames, USA.
  13. Snowder G, Van I D and Hanford K. (2005). Estimation of genetic parameters and genetic change for reproduction. Small Ruminant Research, 57:175-186.
  14. Tomar A K S, Mehta B S and Singh G. (2000). Greasy fleece production and factors affecting it in Bharat Merino sheep under semi-arid climate of Rajasthan. Indian Journal of Animal Sciences, 70: 96-97.
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    volume 49 issue 1 (february 2015) : 40-43,   Doi: 10.5958/0976-0555.2015.00008.4

    Genetic studies on wool production traits in Rambouillet crossbred sheep in J & K State, India

    N
    Nusrat N. Khan
    N
    Nishant Kumar
    A
    A.K. Das*
    D
    Dibyendu Chakraborty
    R
    R.K. Taggar
    P
    Parul Gupta
    1Division of Animal Genetics and Breeding, FVSc & AH, SKUAST-J, R.S. Pura, Jammu- 181 102, India.
    Cite article:- Khan N. Nusrat, Kumar Nishant, Das* A.K., Chakraborty Dibyendu, Taggar R.K., Gupta Parul (2025). Genetic studies on wool production traits in Rambouillet crossbred sheep in J & K State, India. Indian Journal of Animal Research. 49(1): 40-43. doi: 10.5958/0976-0555.2015.00008.4.

    ABSTRACT

    Data on 4186 lambs pertaining to 94 rams of Rambouillet and their crosses over the ten years (1998-2007) at Government Sheep Breeding and Research Farm, Reasi, Jammu, were studied. The averages were 1.49±0.009 kg, 5.52±0.02 cm and 21.25±0.01 µ for greasy fleece weight (GFW), staple length (SL) and fiber diameter (FD) respectively. The highest CV (%) was observed for greasy fleece weight where as the lowest CV (%) was observed for fiber diameter. The least-squares means were 1.51±0.02 kg, 5.64±0.04 cm and 21.27±0.03 µ for greasy fleece weight, staple length, and fiber diameter respectively. The effect of year of lambing had significant effect (Pex.

    REFERENCES

    1. Becker W A. (1975). Manual of Quantitative Genetics. 3rd Edition, Washington State University, Washington, USA.
    2. Cardellino R A, Osorio J C S and Uerreiro J L. (1986). Genetic parameters selection indices and environmental effects on Corriedale ewes in Southern Brazil. Animal Breeding Abstract, 59:1782.
    3. Chopra A, Gowane G R, Prakash V and Arora A L. (2010). Evaluation of wool quality attributes of Bharat Merino sheep. Indian Veterinary Journal, 87: 1003-1005.
    4. Dickson W F and Lush J L. (1933). Inbreeding and the genetic history of the Rambouillet sheep. American. Journal of Heredity, 24:19–33.
    5. Dixit S P, Singh G and Dhillon J S. (2011). Genetic and environmental factors affecting fleece traits in Bharat Merino sheep. Indian Journal of Animal Sciences, 81: 80-83.
    6. Harvey W R. (1990). User’s guide for LSMLMW PC-2 version mixed model- Least squares and Maximum Likelihood Computer Program Mincograph. Columbia, Ohio, USA.
    7. Hultz F S and Hill J A. (1931). Range Sheep and Wool in the Seventeen Western States. Wiley New York.
    8. Kramer C Y. (1957). Extension of multiple range test to group-correlated adjusted means. Biometrics, 13: 13-18.
    9. Lee J W, Waldron D F and Veck L D. (2000). Parameter estimates for birth weight and greasy fleece weight in Rambouillet sheep. Journal of Animal Science, 78:2108-2112.
    10. Mir M Y, Risam K S, Kirmani M A and Gani T A S. (2000). Genetic and environmental factors influencing greasy fleece yield in a closed flock of Corriedale sheep. Indian Journal of Animal Sciences, 70 (5): 540-542.
    11. Mishra A K, Arora A L, Kumar S and Prince L L L. (2009). Effect of back crossing of Garole x Malpura halfbreds with Malpura on growth and wool yield. Indian Veterinary Journal, 86: 628-630.
    12. Snedecor G W and Cochran W G. (1994). Statistical methods. 8th Ed. Iowa State University Press, Ames, USA.
    13. Snowder G, Van I D and Hanford K. (2005). Estimation of genetic parameters and genetic change for reproduction. Small Ruminant Research, 57:175-186.
    14. Tomar A K S, Mehta B S and Singh G. (2000). Greasy fleece production and factors affecting it in Bharat Merino sheep under semi-arid climate of Rajasthan. Indian Journal of Animal Sciences, 70: 96-97.
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