Abstract

지엽류 급여가 임신한 흑염소의 유산 발생에 미치는 영향을 구명하기 위하여 5<TEX>${\sim}$</TEX>6세인 임신 3<TEX>${\sim}$</TEX>4개월된 흑염소 20두를 처리구별로 각각 5두씩 배치하여 소나무지엽, 소나무지엽 사일리지, 잣나무발효지엽 그리고 참나무지엽 사일리지를 급여한 결과는 다음과 같다. 일일 조사료 섭취량은 참나무지엽 사일리지 0.36kg, 소나무지엽 0.28kg, 소나무지엽 사일리지 0.24kg 그리고 발효지엽 0.14kg으로 발효지엽 급여구가 낮았다. 지엽류 내의 유해균 중 Salmonella와 Fungi는 소나무 지엽류에서는 나타나지 않았으나 참나무지엽 사일리지에서는 각각 7.93 <TEX>$10^3$</TEX>, 11.0 <TEX>$10^1$</TEX>cfu/g로 나타났으며 E. Coli도 11.67 <TEX>$10^1$</TEX>cfu/g로 소나무류 지엽보다 훨씬 높게 나타났으나(P<.05) 유산 발생과는 상관이 없었다. 유산발생율은 발효지엽, 소나무지엽 사일리지 그리고 소나무지엽 급여구에서 각각 60%, 40% 그리고 20%로 나타났으며 참나무지엽 사일리지구는 유산이 발생되지 않았다. 혈청 중 progesterone 농도는 모든 처리구가 분만 4주전까지는 높은 수준이었으나 분만일에는 급감하는 경향이었고 estradiol 농도는 분만시에 감소하였으며 cortisol 농도는 정상 분만한 참나무지엽 사일리지 급여구가 다른 처리구보다 분만당일에 낮은 경향이었다. 이상의 결과를 고려할 때 임신 흑염소에 소나무지엽류를 급여하면 유산이 발생할 가능성이 있음을 제시해 준다. In order to investigate the effect of feeding browses on the incidence of abortion in pregnant Korean native female goats, 20 pregnant does(3<TEX>${\sim}$</TEX>4 month) were used as experimental animal and they grouped 4 treatments with 5 heads according to experimental diets. Each group was fed pine browse, pine browse silage, fermented pine browse, or oak browse silage. Browses intake a day was 0.36kg for oak browse silage, 0.28kg for pine browse, 0.24kg for pine browse silage, and 0.14kg for fermented pine browse. Salmonella and Fungi were not found in pine browses but they were found in oak browse silage in the amount of 7.93<TEX>${\times}$</TEX><TEX>$10^3$</TEX> and 11.1<TEX>${\times}$</TEX><TEX>$10^1$</TEX> cfu/g, respectively. E. Coliwas found 11.67<TEX>${\times}$</TEX><TEX>$10^1$</TEX>cfu/g in oak browse silage. The incidence of abortion was 60% for fermented pine browse, 40% for pine browse silage, and 20% for pine browse feeding. Abortion did not occur by feeding oak browse silage. Progesterone concentration was similar each other regardless of normal delivery or abortion at delivery day but the concentration of estradiol was higher for normal delivery, concentration of cortisol was decreased until the delivery day in normal but increased in abortion does. The results were suggested.

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