잣나무 生枝葉 사일리지 급여가 거세한우의 반추위 발효성상 및 스트레스 관련 Hormone의 혈 중 농도에 미치는 영향
Effects of Pine Silage Feeding on Ruminal Fermentation Characteristics, and Blood Concentrations of Stress-Related Hormones in HANWOO Steers
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참고문헌
초록
본 시험은 산림 간벌 부산물인 잣나무 생지엽을 반추가축의 조사료로 이용하기 위하여 제조된 발효 생지엽(pine silage)을 한우에게 급여하였을 때, 반추위 발효성상과 고온 stress의 지표로서 혈 중 thyroxin 및 cortisol의 농도를 조사하였다. 처리구는 조사료로서 볏짚을 급여한 구와 볏짚 30%를 pine silage로 대체한 구로 나누었으며, 반추위 누관이 설치된 거세한우 4두를 이용하여 double turn over design에 의해 4반복으로 시험을 수행하였다. 조사료로서 pine silage의 첨가 급여가 반추위 내 발효성상에서 볏짚구와 차이를 나타내지 않았다. 혈 중 thyroxine 농도는 동물이 고온에서 6시간동안 노출되었을 때부터 낮아졌으며(P<0.1), 평균 농도는 pine silage 구가 볏짚구보다 유의적(P=0.0032)으로 낮았다. 혈 중 cortisol 함량은 고온 환경 하에서 처리구 간에 유의적인 차이가 없었다. 이상의 결과로 볼 때 산림 간벌 사업 부산물인 잣나무 생지엽을 혐기 발효시켜서 한우에게 급여하면 대체 조사료로서의 가능성 외에도 서열스트레스 저감효과까지 기대할 수 있을 것으로 생각된다.
Abstract
This study was conducted to utilize the wastes produced from thinning the forest as a roughage source for ruminants. Four ruminally cannulated Korean steers were used to investigate the ruminal fermentation characteristics and blood concentrations of stress-related hormones. Treatments were composed of the rice straw only (Control) and the 30% pine silage plus 70% rice straw(Pine silage) as roughages. The experiment was conducted with four replicates by a double turn over design. For sampling of blood under high temperature steers were accommodated in respiratory chamber. Concentrations of ruminal pH, volatile fatty acids and ammonia were not affected by substitution of pine silage. Mean concentration of blood thyroxine was significantly(P<0.01) lower in the pine silage than the control. However, blood cortisol concentration was not affected by substitution of pine silage, even though it was significantly(P<0.05) decreased after exposure for 6 hrs in high temperature. It was concluded that the pine silage using the wastes produced from thinning the forest could be use as a substitute roughage for reduction of heat stress in ruminant.
참고문헌 (20)
- "Influence of supplemental energy and protein on protein synthesis and crude protein reaching the abomasum" (1988)
- "Effect of temperature on the thyroxine secretion rate of rams" (1962)
- "Nutritional features and eco- logy of predominant anaerobic bacteria of the intestinal tract" (1974)
- "Modified reagents for determination of urea and ammonia", 8, pp.130~ (1962)
- "Effects of soluble nitrogen and urea on nitrogen utilization and ruminal microbial synthesis in sheep", oro (1978), Univ
- "The use of pivalic acid as a reference substance in measurements of production of volatile fatty acids by rumen micro-orga- nisms in vitro" (1976)
- "Effect of rumen ammonia concentration on in situ rate and extent of digestion of feedstuffs" (1986)
- "Chemical factors involved in ruminal fiber digestion", 69, pp.2755~ (1986)
- "Effects of solids and liquid flows on fermentation in continuous cultures" (1984), Kincaid
- "Effect of season on milk temperature milk growth hormone and somatic cell counts of lactation cattle", igo (1988)
- "Short-term heat acclimation effects on hormonal profile of lactation cows" (1988), Univ
- "Effects of environmental and other stressors on blood hormone patterns in lactating animals" (1976)
- "Effect of environmental heat and dietary fiber on thyroid physiology of lactation cows" (1982)
- "Optimum Feeding of Dairy Animals for Meat and Milk The University of Georgia Press" (1973)
- "Aroma- therapy for Health Professionals.1st Ed.,", (el), pp.133~167 (1995), Churchill livingstone
- "Microbial rumen fermentation", 64, pp.1153~ (1981)
- "Effects of dietary fiber on intake and digestion by lactation dairy cows during cool or hot,, humid weather." (1998)
- "Effect of level of calcium and sodium bicarbonate in high concentrate diets on performance and nutrients utilization by beef steers" (1981)
- "Thyroid activity and heat production in cattle following sudden ambient temperature changes" (1967)
- "잣나무 생지엽을 이용한 발효조사료의 경제성 분석", (134), pp.24~ (2002)