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대추씨(Zizyphus jujuba Seed) 급여가 육계의 생산성에 미치는 영향

Effects of Dietary Zizyphus jujuba Seed Meal on Broiler Performance

  • 손장호 (대구교육대학교 실과교육과)
  • Son, Jang-Ho (Department of Practical Arts Education, Daegu National University of Education)
  • 투고 : 2014.10.13
  • 심사 : 2014.11.20
  • 발행 : 2014.12.31

초록

본 연구는 대추씨 분말의 급여가 육계의 생산성, 소장, 맹장의 길이, 근위의 무게 및 배설물 중 악취 발생량에 미치는 영향에 대해서 조사하였다. 1일령의 육계 Ross 무감별추 180수를 4개 처리구에 3반복으로 공시하였다. 시험구는 대조구 사료에 대추씨 분말 0.3%(T1), 0.6%(T2) 및 0.9%(T3)를 첨가한 4처리 배치하였다. 시험 전기(3주령)에서는 증체중과 사료 효율 모두 대추씨 분말 0.6% 처리구가 대조구보다 유의하게 증가하였다(P<0.05). 전 시험 기간 동안, 시험 기간 동안 통계적인 차이는 없었지만, 대추씨 분말 첨가구 모두에서 증체량이 대조구보다 개선되는 경향이 인정되었다. 사료 효율(feed/gain)도 증체량과 같은 경향으로 증가하였다. 세 개의 대추씨 분말 급여구 모두는 근위의 무게를 대조구보다 유의하게 증가시켰다(P<0.05). 그러나 첨가량의 다소에 따른 차이는 인정되지 않았다. 소장 및 맹장의 길이는 대추씨 분말 첨가의 유무 및 다소에 따른 영향은 인정되지 않았다. 배설물 중 $NH_3$의 발생량은 배설 직후, 배설 후 5일 및 10일 모두에서 대추씨 분말 급여에 의해서 유의하게 감소하였다(P<0.05). 결론적으로 본 시험의 결과, 육계 사료에 0.3~0.6 %의 대추씨 분말의 첨가는 근위 등의 위장관 발달 촉진으로 인한 사료 중 소화율을 개선 및 배설물 중 $NH_3$ 발생량의 감소에 기인한 육계의 증체량 개선 효과가 있을 가능성이 생각되어진다.

The study was conducted to investigate the effect of dietary Zizyphus jujuba seed meal on broiler performance, small intestine and cecal length, gizzard weight and fecal gas emission. A total of 180 day-old broiler chicks (Ross) were randomly divided into 4 groups, fed the commercial diet containing 0, 0.3 (T1), 0.6 (T2) and 0.9 % (T3) of Zizyphus jujuba seed meal from two to 5 weeks of age. Body weight gain and feed efficiency (feed/gain) were significantly increase in T2 than other groups at 3 weeks age (P<0.05). There was no statistical difference in body weight gain and feed efficiency (feed/gain) by feeding Zizyphus jujuba seed meal, although they tended to be improved by treatment during whole experimental period (5 weeks age). The gizzard weights of three treatment groups were higher than control. But no difference among three treatment groups was observed. The small intestine and cecal length was no change by feeding Zizyphus jujuba seed meal. Emission of $NH_3$ and VFA gas from excreta were significantly decreased from 5 to 10 days of storage period (P<0.05). In conclusion, the results of this study showed that the addition of Zizyphus jujuba seed meal at 0.3 to 0.6 % to the diet has increased digestibility of feed and the reduction of $NH_3$ emissions from feces, there was a possibility of improvement in body weight gain of broiler chickens.

키워드

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