지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 충남대학교 농업과학연구소 Korean Journal of Agricultural Science Korean Journal of Agricultural Science Vol.44 No.4
- 발행연도
- 2017.12
- 수록면
- 519 - 524 (6page)
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초록· 키워드
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The present study investigated the impacts of mating age of gilts (A1, < 230 days; A2, 230 - 249 days and A3, 250 ≤ days) on reproductive performance and litter size of sows at farrowing to weaning. A total of 102 crossbred gilts (Yorkshire × Landrace; average days old, 90 days) were purchased from a commercial breeding company. After identification of third estrus, the gilts were artificially inseminated using semen of Duroc boars. Pregnant pigs were allotted to one of three groups including A1, A2, and A3. Experimental diets and water were fed ad libitum during each experimental period which included the first, second, and third parities. Backfat thickness (BFT) of sows was higher in A3 at farrowing in the first parity than in others. At weaning time in the second parity, sows in A3 group showed a numerically higher BFT than those in A1. There was no effect of mating age on the total number of piglets born and total weaned piglets. There was a tendency to decrease the wean-to estrus-interval in the first parity as age increased at mating. Results obtained in the present study indicate that the first mating age does not affect the subsequent parites’ reproductive performance; however, weaned to estrus interval tended to decrease in A2 at the first parity.
목차
Abstract
Introduction
Materials and methods
Results
Discussion
References
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UCI(KEPA) : I410-ECN-0101-2018-520-001702132