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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국축산학회(구 한국동물자원과학회) 한국축산학회지 한국축산학회지 제61권 제6호
발행연도
2019.1
수록면
340 - 351 (12page)

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Hot environments can affect feed intake and lactation, and the subsequent unavailability of important micronutrients to the newborn piglet can impair piglet growth, reduce the viability of newborn piglets and limit their subsequent performance. This work addresses the effects of hot environments (summer season) upon the reproductive performance of sows during gestation and lactation as well as on the serum levels of vitamins and the concentration of immunoglobulins in their litters in comparison with the winter season. Fourteen sows were evaluated over 100 ± 2 days of gestation in each season. The temperature and humidity index (THI) was used as an indirect measure of heat stress during gestation. The reproductive performance, milk yield, and body condition of the sows were recorded. The concentrations of vitamin E and vitamin A in piglets and in sow serum, colostrum, milk and feed were determined by HPLC; immunoglobulins were assessed by an ELISA. The THI index indicated that animals were subject to heat stress only in during the summer. Although the effect was not significant, there were a lower number of piglets at birth and at weaning and the milk yield in summer compared with winter. There was no difference (p > 0.05) in the body condition of sows between seasons. Season had an effect (p < 0.05) on the vitamin A concentration of postpartum sow serum (0.29 μg/mL in winter vs 0.21 μg/mL in summer) and on the vitamin E concentration before birth (2.00 μg/mL in winter vs 0.90 μg/mL in summer). Vitamin E in milk was higher (p < 0.05) in winter than in summer (2.23 vs 1.81 μg/mL). Serum levels of vitamins A and E in piglets at birth were lower (p < 0.05) in winter than in summer. The concentrations of immunoglobulins (IgG and IgA) in colostrum and milk were similar between seasons (p > 0.05), but the IgA in piglet serum was higher in winter than in summer (p < 0.05). High temperatures produced heat stress in sows, which affected certain aspects of production that can be translated into economic losses for this sector.

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참고문헌 (40)

참고문헌 신청
Wegner K / 2014 / Climatic effects on sow fertility and piglet survival under influence of a moderate climate / Animal 8:1526~1533 google schola Gou Z / 2018 / Effects of heat stress on piglet production/performance parameters / Trop Anim Health Pro 50:1203~1208 google schola Almond PK / 2005 / Seasonal infertility in large pig production units in an Eastern-European climate / Aust Vet J 83:344~346 google schola Suriyasomboon A / 2006 / Effect of temperature and humidity on reproductive performance of crossbred sows in Thailand / Theriogenology 65:606~628 google schola Silva BA / 2009 / Effects of dietary protein concentration and amino acid supplementation on the feeding behavior of multiparous lactating sows in a tropical humid climate / J Anim Sci 87:2104~2112 google schola

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