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Original Article

Effects of number of frozen-thawed ram sperm and number of inseminations on fertility in synchronized ewes under field condition

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  • 발행기관
    한국동물생명공학회(구 한국동물번식학회) 바로가기
  • 간행물
    Journal of Animal Reproduction and Biotechnology 바로가기
  • 통권
    Volume. 35 No. 2 (2020.06)바로가기
  • 페이지
    pp.190-197
  • 저자
    Pankaj Kumar Jha, Md. Golam Shahi Alam, Md. Abdullah Al Mansur, Mohammad Rafiqul Islam Talukder, Nazmun Naher, A. K. M. Anisur Rahman, David C. Hall, Farida Yeasmin Bari
  • 언어
    한국어(KOR)
  • URL
    https://www.earticle.net/Article/A378905

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원문정보

초록

영어
The effects of the number of frozen-thawed ram sperm per single and double intra-cervical artificial insemination (AI) on fertility in ewes were studied. A total of 89 non-pregnant ewes were synchronized for oestrus with two doses of 100 μg PGF2α (Cloprostenol) 9 days apart. The ewes were randomly assigned to one of four groups; D200 (n = 23; double AI with 200 × 106 sperm), S200 (n = 24; single AI with 200 × 106 sperm), D100 (n = 24; double AI with 100 × 106 sperm) and S100 (n = 18; single AI with 100 × 106 sperm). Ewes were inseminated within 12 to 18 h for single AI and, within 10 to 12 h and 16 to 18 h for double AI after the onset of oestrus. The onset of oestrus ranged from 28 to 76 h (54.33 ± 1.28 h). The high percentage (29.2%) of ewes showed oestrus between 51 to 60 h. The non-return rates were highest in group D200 (56.5%) and differed significantly (p < 0.05) from group S100 (11.1%). No ewes were pregnant in group S100, and the pregnancy rates among the remaining groups did not differ. The mean gestation period was 152.8 ± 0.5 days and no difference was observed among the groups. The lambing and multiple birth rates were 100% in group D200. The single and twin lambing was highest in group D100 (33.3%) and group D200 (83.3%), respectively. Only one triplet lambing and the highest lambing size (2.2 ± 0.2) was recorded in group D200. In conclusion, double AI with 200 × 106 sperm showed comparatively most practical for achieving high pregnancy rates and lambing performances in Bangladeshi ewes under field conditions.

목차

ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
Rams
Chemicals
Semen collection and evaluation
Semen dilution, freezing, and preservation
Ewes for AI and its management in the field
Experimental design
Oestrous synchronization
Artificial insemination
Reproductive performance
Data analysis
RESULTS
Onset of oestrus and oestrus response rates
Reproductive performances
DISCUSSION
CONFLICTS OF INTEREST
ACKNOWLEDGEMENTS
AUTHOR CONTRIBUTIONS
AUTHOR’S POSITION AND ORCID NO.
REFERENCES

키워드

artificial insemination frozen ram semen sheep fertility sperm number

저자

  • Pankaj Kumar Jha [ Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh, Nepal Agricultural Research Council (NARC), Khumaltar, Lalitpur-44703, Nepal ]
  • Md. Golam Shahi Alam [ Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh ]
  • Md. Abdullah Al Mansur [ Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh ]
  • Mohammad Rafiqul Islam Talukder [ Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh ]
  • Nazmun Naher [ Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh ]
  • A. K. M. Anisur Rahman [ Department of Medicine, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh ]
  • David C. Hall [ Department of Ecosystem and Public Health, University of Calgary, Calgary-T2N 4Z6, Canada ]
  • Farida Yeasmin Bari [ Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh ]

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국동물생명공학회(구 한국동물번식학회) [The Korean Society of Animal Reproduction and Biotechnology]
  • 설립연도
    1976
  • 분야
    농수해양>축산학
  • 소개
    동물번식생리학, 동물생명공학, 수의학, 인공수정 및 수정란이식을 이용한 동물개량에 관한 이론과 기술의 발전을 통해 학계, 연구계, 산업계 및 양축가 상호간의 협력을 도모함으로써 동물과학발전 및 사회일반의 이익에 기여 한다는 목적을 위해 노력해 나가겠습니다.

간행물

  • 간행물명
    Journal of Animal Reproduction and Biotechnology
  • 간기
    계간
  • pISSN
    2671-4639
  • eISSN
    2671-4663
  • 수록기간
    2019~2026
  • 십진분류
    KDC 527 DDC 636

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