volume 38 issue 1 (january to june 2004) : 50 - 52

REPRODUCTIVE PERFORMANCES OF CRESTAR AND PMSG ADMINISTERED TO POSTPARTUM ANOESTRUS COWS

H
H.C. Nath
D
D.J. Dutta
A
A. Dutta
R
R.K. Biswas
1Department of Animal Physiology, College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati - 781022, India
  • Submitted|

  • First Online |

  • doi

Cite article:- Nath H.C., Dutta D.J., Dutta A., Biswas R.K. (2025). REPRODUCTIVE PERFORMANCES OF CRESTAR AND PMSG ADMINISTERED TO POSTPARTUM ANOESTRUS COWS. Indian Journal of Animal Research. 38(1): 50 - 52. doi: .
The reproductive activities like oestrus, conception and cyclicity in postpartum anoestrus cows following Crestar ear implant and PMSG injecfion were studied. Out of 10 postpartum anoestrus cows, 9 exhibited oestrus 30.81±1.43 hours after Crestar ear implant was removed after 9 days with PMSG injection @ 300 1U on the day of implant removal. The duration of induced oestrus was 19.11±0.34 hours. All oestrus cows had ovulated. Five out of 9 cows conceived at induced oestrus. Four animals which did not conceive, exhibited first natural oestrus after 20.8±3.61 days. Out of these four cows, only three conceived. The remaining one cow resumed normal cyclicity.The animals completed their term on an average 280.44±2.35 days after insemination. The mean birth weight of calf was 10.56±1.32 kg with male and female ratio of 1:3
    1. Ahmed, FA (1998). M.V.Sc. Thesis Assam Agric. Unlv., Guwahati, Assam, India.
    2. Das, J.N. (1995). Ph. DThesis Assam Agric. UnIv., Guwahati, Assam, india.
    3. Dhande, S.D. and Kadu, M.S. (1994).lndianJ. Anim. heprod., 15: 98-101.
    4. GonzaIez-Stagnaro, C. eta/. (1981). Proc. 8'" Meeting of the Latin American Association of Animal Production held In the Dominican Republic on 8'" October, 1981, 16: 127-128.
    5. Hefez, E.S.E. (1987). Reproduction in Farm Animals. 5'" ed., Lea cInd Febiger, Philadelphia.
    6. Krishnakumar, K. and Subramanian, A. (1999).lndianJ. Anim. Reprod., 20: 86-87.
    7. Kyle, S.D. etaJ. (1992). J. Dairy Sci. , 75: 1456-1460.
    8. Pant, H.C. and Gupta, A.K. (1996).lndianJ. Anim. Reprod., 17:84-87.
    9. Pawshe, C.H. eta/. (1991).lndianJ. Anim. Reprod., 12: 172-174.
    10. Petit, M. eta/. (1978). TheriogenoJogy. 9: 493-504.
    11. Roberts, S.J. (1971). Veterinary Obstetrics and Genital Diseases. 2nd ed. CBS Publishers and Distribution, India. 352-353. .
    12. Tamuli, M.K. et a/. (2002). Indian J. Anim. Reprod., 23: 50-53.
    13. 1"Jor*0negoro, S. et a/. (1987). J. Dairy Sci., 70: 2162-2177.
    14. ZemJanis, S.R. (1976). Diagnostic and Therapeutic TechniqUE! In Animal, Reproduction. 2nd ed. The Williams Wilkins , Co., Baltimore.
    volume 38 issue 1 (january to june 2004) : 50 - 52

    REPRODUCTIVE PERFORMANCES OF CRESTAR AND PMSG ADMINISTERED TO POSTPARTUM ANOESTRUS COWS

    H
    H.C. Nath
    D
    D.J. Dutta
    A
    A. Dutta
    R
    R.K. Biswas
    1Department of Animal Physiology, College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati - 781022, India
    • Submitted|

    • First Online |

    • doi

    Cite article:- Nath H.C., Dutta D.J., Dutta A., Biswas R.K. (2025). REPRODUCTIVE PERFORMANCES OF CRESTAR AND PMSG ADMINISTERED TO POSTPARTUM ANOESTRUS COWS. Indian Journal of Animal Research. 38(1): 50 - 52. doi: .
    The reproductive activities like oestrus, conception and cyclicity in postpartum anoestrus cows following Crestar ear implant and PMSG injecfion were studied. Out of 10 postpartum anoestrus cows, 9 exhibited oestrus 30.81±1.43 hours after Crestar ear implant was removed after 9 days with PMSG injection @ 300 1U on the day of implant removal. The duration of induced oestrus was 19.11±0.34 hours. All oestrus cows had ovulated. Five out of 9 cows conceived at induced oestrus. Four animals which did not conceive, exhibited first natural oestrus after 20.8±3.61 days. Out of these four cows, only three conceived. The remaining one cow resumed normal cyclicity.The animals completed their term on an average 280.44±2.35 days after insemination. The mean birth weight of calf was 10.56±1.32 kg with male and female ratio of 1:3
      1. Ahmed, FA (1998). M.V.Sc. Thesis Assam Agric. Unlv., Guwahati, Assam, India.
      2. Das, J.N. (1995). Ph. DThesis Assam Agric. UnIv., Guwahati, Assam, india.
      3. Dhande, S.D. and Kadu, M.S. (1994).lndianJ. Anim. heprod., 15: 98-101.
      4. GonzaIez-Stagnaro, C. eta/. (1981). Proc. 8'" Meeting of the Latin American Association of Animal Production held In the Dominican Republic on 8'" October, 1981, 16: 127-128.
      5. Hefez, E.S.E. (1987). Reproduction in Farm Animals. 5'" ed., Lea cInd Febiger, Philadelphia.
      6. Krishnakumar, K. and Subramanian, A. (1999).lndianJ. Anim. Reprod., 20: 86-87.
      7. Kyle, S.D. etaJ. (1992). J. Dairy Sci. , 75: 1456-1460.
      8. Pant, H.C. and Gupta, A.K. (1996).lndianJ. Anim. Reprod., 17:84-87.
      9. Pawshe, C.H. eta/. (1991).lndianJ. Anim. Reprod., 12: 172-174.
      10. Petit, M. eta/. (1978). TheriogenoJogy. 9: 493-504.
      11. Roberts, S.J. (1971). Veterinary Obstetrics and Genital Diseases. 2nd ed. CBS Publishers and Distribution, India. 352-353. .
      12. Tamuli, M.K. et a/. (2002). Indian J. Anim. Reprod., 23: 50-53.
      13. 1"Jor*0negoro, S. et a/. (1987). J. Dairy Sci., 70: 2162-2177.
      14. ZemJanis, S.R. (1976). Diagnostic and Therapeutic TechniqUE! In Animal, Reproduction. 2nd ed. The Williams Wilkins , Co., Baltimore.
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