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Original Article

Effects of bull parameters, testicular echogenicity, and scrotal circumference on semen traits

첫 페이지 보기
  • 발행기관
    한국동물생명공학회(구 한국동물번식학회) 바로가기
  • 간행물
    Journal of Animal Reproduction and Biotechnology 바로가기
  • 통권
    Volume. 41 No. 2 (2026.06)바로가기
  • 페이지
    pp.52-57
  • 저자
    Peterkin Nzomo Munywoki, Ambrose Ng’eno Kipyegon, Wilkister Nakami Nabulindo, Roselyne Wambugu
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A489439

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원문정보

초록

영어
Background: Africa is the fastest-growing continent, with more than half of the global population growth expected to occur in the region by 2050. The increasing population and lifestyle changes translate to high demand for food. However, Africa does not produce enough food to cater to its population. The current study sought to bridge knowledge gaps in the dairy and beef production systems by addressing factors affecting semen production in bulls used for AI at the Kenya Animal Genetic Resources Center. Methods: A total of 88 bulls met the inclusion criteria (> 16 months, healthy, and in active semen collection). The breed breakdown was as follows; Ayrshire (n = 39), Friesian (n = 34), Jersey (n = 7), Boran (n = 3), and Sahiwal (n = 5). Bull characteristics (age, breed, body weight, BCS), testicular attributes (SC and testicular echotexture), and semen parameters (semen volume, forward progressive motility, sperm concentration, and post-thaw motility) were determined, and results were analyzed using R statistical software. Results: Semen volume significantly increased with body weight, age and SC (p < 0.001-0.05). Sperm concentration significantly decreased with increased BCS (p < 0.05). Breed significantly affected semen volume and sperm concentration (p < 0.01- 0.05). Hyperechoic testicular lesions noticed in older bulls did not significantly affect semen quality (p > 0.05). Conclusions: These findings will inform bull selection and culling criteria, highlighting that bulls presumed overdue for culling can still produce high-quality semen (the oldest bull at the time of data collection was aged 140 months). Further studies elucidate the relationship between increased testicular echotexture and semen parameters.

목차

ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
Study area and study group
Data collection
Statistical analyses
Ethical approval
RESULTS
DISCUSSION
CONCLUSION
REFERENCES

키워드

age body weight scrotal circumference semen quality testicular echotexture

저자

  • Peterkin Nzomo Munywoki [ Department of Clinical Studies, Faculty of Veterinary Medicine, The University of Nairobi, Nairobi 29053-00625, Kenya ] Corresponding Author
  • Ambrose Ng’eno Kipyegon [ Department of Clinical Studies, Faculty of Veterinary Medicine, The University of Nairobi, Nairobi 29053-00625, Kenya ]
  • Wilkister Nakami Nabulindo [ Department of Clinical Studies, Faculty of Veterinary Medicine, The University of Nairobi, Nairobi 29053-00625, Kenya ]
  • Roselyne Wambugu [ Kenya Animal Genetic Resources Center, Nairobi 23070-00604, Kenya ]

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

이 권호 내 다른 논문 / Journal of Animal Reproduction and Biotechnology Volume. 41 No. 2

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