Earticle

초록

영어

Advancing the estrous cycle of mares is an essential breeding strategy that is routinely conducted by Thoroughbred breeders to improve economic outcomes. For this purpose, Equilume light masks have been developed as an alternative to existing technologies such as artificial lighting or hormonal treatments because they are considered as valid as existing methods with additional animal welfare advantages. For example, with the Equilume light masks, horses can be let out into the pasture, whereas they have to be kept indoors during lighting treatment. Because the function of Equilume light mask on the estrous cycle of mares is influenced by environmental factors such as nutrition condition and temperature, Equilume light mask should be studied in various environments. The objective of the present study was thus to verify the effect of Equilume light masks on the onset of the estrous cycle in Thoroughbred mares in South Korea. Mares were randomly selected and separated into two groups at two Thoroughbred horse breeding farms. The mares in the treatment group were equipped with Equilume light masks from November 18 to February 10 the following year. The body condition, the number and size (> 35 mm) of uterine follicles, and the uterine horn score of the mares were assessed on January 6 and February 10. The body condition scores were not different between the two groups. The treatment with the Equilume light mask had no positive effects on developing follicles and the reproductive tract. In conclusion, the use of Equilume light masks did not influence the seasonal resumption of the estrus cycles in Thoroughbred mares in South Korea.

목차

ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
Animals
Equilume light masks
Experimental protocol
Body condition score
Rectal palpation and ultrasound sonography examination
Statistics
RESULTS
Body condition score
Size of the largest follicle
The number of mares with follicles > 35 mm
Uterine horn scores
DISCUSSION
CONFLICTS OF INTEREST
ACKNOWLEDGEMENTS
AUTHOR CONTRIBUTIONS
AUTHOR’S POSITION AND ORCID NO.
REFERENCES

키워드

저자

• Gaeun Lee [ Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Korea ]
• Heejun Jung [ Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Korea ]
• Minjung Yoon [ Department of Animal Science and Biotechnology, Kyungpook National University, Department of Horse, Companion and Wild Animal Science, Kyungpook National University, Sangju 37224, Korea ] Corresponding Author

참고문헌

발행기관

간행물

관심저널 등록

• 간행물명

  Journal of Animal Reproduction and Biotechnology

• 간기

  계간

• pISSN

  2671-4639

• eISSN

  2671-4663

• 수록기간

  2019~2025

• 십진분류

  KDC 527 DDC 636