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Research Article

volume 52 issue 10 (october 2018) : 1389-1394,   Doi: 10.18805/ijar.B-3397

Study of sire selection in view of genetic relation involving fitness traits in Malpura sheep in an organized farm of Rajasthan, India

G
Govind Mohan
G
G.R. Gowane
A
Arun Kumar
A
A.K. Chakravarthy
1Department of Animal Genetics and Breeding, ICAR-National Dairy Research Institute. Karnal-132 001, Haryana, India.
Cite article:- Mohan Govind, Gowane G.R., Kumar Arun, Chakravarthy A.K. (2017). Study of sire selection in view of genetic relation involving fitness traits in Malpura sheep in an organized farm of Rajasthan, India. Indian Journal of Animal Research. 52(10): 1389-1394. doi: 10.18805/ijar.B-3397.

ABSTRACT

The genetics of fitness traits, viz. replacement rate (RR) and selective value (SV) were studied in the flock of Malpura Sheep along the production parameters of the animals. The study was carried out on 10 years records for 2307 lambing sired by 187 sires. Sire wise incidence of replacement traits was as follows: abnormal birth (0.30%), sex ratio (49.98%), mortality (17.26%), culling (15.37%), RR on total lamb basis (33.98%) and RR on female lamb basis (68.44%). The selective value or adaptive value for the flock was 1.37. Sire did not affect abnormal birth, mortality, culling and SV significantly, whereas sire significantly affected sex ratio, and RR on total female lambs born basis. Ranking of the sires for selective value was incoherent with the ranking for production parameters such as age at first service, age at first lambing, weight at first service, productive flock life and longevity. Study indicated that the selection of sires for SV would not bring desired correlated change on any of the production parameter of the animals.

REFERENCES

  1. Becker, W. A. (1975). Manual of procedure in quantitative genetics. 3rd Edition. Publication of Washington. Washington State University. USA.
  2. Dixit, S. P., Singh, G. and Jayashankar, J. (2000). Sources of variation in replacement rate in Bharat Merino sheep. Indian Journal of Small Ruminants. 6(1):1-5.
  3. Fogarty, N.M. (1995). Genetic parameters for live weight, fat and muscle measurements, wool production and reproduction in sheep: a review. Animal Breeding Abstracts. 63(3):101–143.
  4. Houle, D. (1992). Comparing Evolvability and Variability of Quantitative Traits. Genetics. 130: 195-204.
  5. Lawar, V.S., Patil, V.K. and Koratkar, D.P. (1992). Breeding efficiency in Angora and its crosses. Recent Advances in Goat Production Vth International conference on Goats, New Delhi.1309-1316.
  6. Masari, H.A.P., Shadparvar, A.A., Zadeh, N.G.H. and Tavatori, M.H.H. (2013). Estimation of genetic parameters for reproductive traitsin shall sheep. Tropical Animal Health Production. 45:1259–1263.
  7. Meyer, K. (2007). WOMBAT—a program for mixed model analyses by restricted maximum likelihood. User notes. Animal Genetics and Breeding Unit, Armidale, 55.
  8. Olivier, W.J., Snyman, M.A., Wyk van J.B. and Erasmus G.J., (1998). Genetic parameter estimates for fitness traits in South African Merino sheep. Livestock Production Science. 26:71-77.
  9. Qureshi, M.L., Nanavati, S., Barwe, V. and Saha, D.N. (1991). Study of some reproductive character of local Malvi goats. Indian Veterinary Journal. 68: 181-182.
  10. Rendel, J.M. and Robertson, A. (1950). Estimation of genetic gain in milk yield by selection in a closed herd of dairy cattle. Journal of Genetics. 50: 1-8.
  11. Safari, E., Fogarty, N.M. and Gilmour, A.R. (2005). A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep. Livestock Production Science. 92:271–289.
  12. Schons, D., Hohenboken, W.D. and Hall, J.D. (1985). Population analysis of a commercial beef cattle herd. Journal of Animal Science. 61:44-54.
  13. Spearman, C. (1904). The proof and measurement of association between two rings. American Journal of Psychology 15: 72.
  14. Vanimisetti, H.B., Notter, D.R. and Kuehn L.A. (2007). Genetic (co)variance component for ewe productivity traits in Katahdin sheep. Journal of Animal Science. 85:60-68.
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    Research Article

    volume 52 issue 10 (october 2018) : 1389-1394,   Doi: 10.18805/ijar.B-3397

    Study of sire selection in view of genetic relation involving fitness traits in Malpura sheep in an organized farm of Rajasthan, India

    G
    Govind Mohan
    G
    G.R. Gowane
    A
    Arun Kumar
    A
    A.K. Chakravarthy
    1Department of Animal Genetics and Breeding, ICAR-National Dairy Research Institute. Karnal-132 001, Haryana, India.
    Cite article:- Mohan Govind, Gowane G.R., Kumar Arun, Chakravarthy A.K. (2017). Study of sire selection in view of genetic relation involving fitness traits in Malpura sheep in an organized farm of Rajasthan, India. Indian Journal of Animal Research. 52(10): 1389-1394. doi: 10.18805/ijar.B-3397.

    ABSTRACT

    The genetics of fitness traits, viz. replacement rate (RR) and selective value (SV) were studied in the flock of Malpura Sheep along the production parameters of the animals. The study was carried out on 10 years records for 2307 lambing sired by 187 sires. Sire wise incidence of replacement traits was as follows: abnormal birth (0.30%), sex ratio (49.98%), mortality (17.26%), culling (15.37%), RR on total lamb basis (33.98%) and RR on female lamb basis (68.44%). The selective value or adaptive value for the flock was 1.37. Sire did not affect abnormal birth, mortality, culling and SV significantly, whereas sire significantly affected sex ratio, and RR on total female lambs born basis. Ranking of the sires for selective value was incoherent with the ranking for production parameters such as age at first service, age at first lambing, weight at first service, productive flock life and longevity. Study indicated that the selection of sires for SV would not bring desired correlated change on any of the production parameter of the animals.

    REFERENCES

    1. Becker, W. A. (1975). Manual of procedure in quantitative genetics. 3rd Edition. Publication of Washington. Washington State University. USA.
    2. Dixit, S. P., Singh, G. and Jayashankar, J. (2000). Sources of variation in replacement rate in Bharat Merino sheep. Indian Journal of Small Ruminants. 6(1):1-5.
    3. Fogarty, N.M. (1995). Genetic parameters for live weight, fat and muscle measurements, wool production and reproduction in sheep: a review. Animal Breeding Abstracts. 63(3):101–143.
    4. Houle, D. (1992). Comparing Evolvability and Variability of Quantitative Traits. Genetics. 130: 195-204.
    5. Lawar, V.S., Patil, V.K. and Koratkar, D.P. (1992). Breeding efficiency in Angora and its crosses. Recent Advances in Goat Production Vth International conference on Goats, New Delhi.1309-1316.
    6. Masari, H.A.P., Shadparvar, A.A., Zadeh, N.G.H. and Tavatori, M.H.H. (2013). Estimation of genetic parameters for reproductive traitsin shall sheep. Tropical Animal Health Production. 45:1259–1263.
    7. Meyer, K. (2007). WOMBAT—a program for mixed model analyses by restricted maximum likelihood. User notes. Animal Genetics and Breeding Unit, Armidale, 55.
    8. Olivier, W.J., Snyman, M.A., Wyk van J.B. and Erasmus G.J., (1998). Genetic parameter estimates for fitness traits in South African Merino sheep. Livestock Production Science. 26:71-77.
    9. Qureshi, M.L., Nanavati, S., Barwe, V. and Saha, D.N. (1991). Study of some reproductive character of local Malvi goats. Indian Veterinary Journal. 68: 181-182.
    10. Rendel, J.M. and Robertson, A. (1950). Estimation of genetic gain in milk yield by selection in a closed herd of dairy cattle. Journal of Genetics. 50: 1-8.
    11. Safari, E., Fogarty, N.M. and Gilmour, A.R. (2005). A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep. Livestock Production Science. 92:271–289.
    12. Schons, D., Hohenboken, W.D. and Hall, J.D. (1985). Population analysis of a commercial beef cattle herd. Journal of Animal Science. 61:44-54.
    13. Spearman, C. (1904). The proof and measurement of association between two rings. American Journal of Psychology 15: 72.
    14. Vanimisetti, H.B., Notter, D.R. and Kuehn L.A. (2007). Genetic (co)variance component for ewe productivity traits in Katahdin sheep. Journal of Animal Science. 85:60-68.
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