Aluminum Sulfate 처리가 6주령 육계생산 능력 및 깔짚 내의 질소 함량에 미치는 영향

Effects of Aluminum Sulfate Addition on Six-Week-Old Broiler Performance and Nitrogen Contents in Litter at the Sixth Week

  • 최인학 (대구대학교 자연자원대학 가축사료영양학 연구실) ;
  • 남기홍 (대구대학교 자연자원대학 가축사료영양학 연구실)
  • 발행 : 2002.12.01

초록

본 연구에서는 ALUM을 처리한 영향이 3주령과 6주령 병장아리 성장과 6주후 깔짚 중의 질소(N)함량이 어떻게 영향을 미치는지 비교시험을 하였다. 비교를 한2개 처리 구는 전부 단백질 수준을 같게 하고 한 처리구에서는 깔짚에 ALUM을 처리 하고(T$_1$) 다른 처리구에는 깔짚에 ALUM을 처리하지 않았다(T2). 이때 깔짚은 왕겨로 하였으며, ALUM 처리는 왕겨kg당 200 g을 topdressing 하였다. 사료섭취량은 22~42일령과 0~42일령에서 공히 T$_1$구가 T$_2$구보다 높았다(P<0.05). 그리고 체중증가량은 0~42일령에서 T$_1$구가 T$_2$구보다훨씬 높았으나(P<0.01) 사료효율에는 차이가 없었다. 왕겨로부터 발생되는 암모니아 농도는 처음 5주 동안은 T$_1$구가 T$_2$구보다 유의하게(P<0.05 나 P<0.01) 낮았으나 6주부터는 T$_1$구와 T$_2$구 간에는 차이가 없었다. 또 6주령에서 측정한 왕겨내의 pH는 T$_1$구가 T$_2$구보다 낮았으며P<0.05), 켈달 질소 함량(TKN)은 T$_1$구가 T$_2$구보다 높았다 (P<0.05). 그러나 왕겨내의 NH$_4$-N및 NO$_3$-N의 함량은 T$_1$과 T$_2$에서는 차이가 없었다. 본 연구 결과를 다시 정리하면 깔짚에 ALUM을 처리할 경우 6주령에서 육계의 생산성은 기대되며 암모니아 생성량의 감소는 기대하지 못하지만 깔짚은 질소비료로서의 성분은 유효함을 알 수 있다.

This study was conducted to determine the effect of aluminum sulfate[Al$_2$(S0$_4$)$_3$$.$14H$_2$O], commonly referred to as ALUM, addition to broiler litter on 3 and 6 week old broiler performance and the nitrogen content of the litter at 6 weeks of age. The two treatment groups were 134 identical diets with the same protein levels, but one group(T$_1$) had ALUM added as a top dressing to the litter at a rate of 200 g ALUM / kg of rice bran, while T$_2$ did not have ALUM added to the litter. Feed consumption for T$_1$ was higher in the 22 to 42 day-old and 0 to 42 day-old periods (P<0.05). Body weight in T$_1$ was also higher in the 0 to 42 day -old period (P<0.0l). There was no difference, however, in the feed : gain ratio between T$_1$ and T$_2$ During the first 5 weeks, T$_1$ had significantly less(P<0.05 or 0.01) ammonia emission from the litter than T$_2$ but at 6 weeks there was no difference in ammonia concentration between the two groups. At 6 weeks, T$_1$ had a lower litter pH than Ta (P<0.05) and total Kjeldahl nitrogen(TKN) was higher far T$_1$ than T$_2$ (P<0.05). However,71 did not show any difference from T$_2$ in the content of NH4-N and NO3-N. In summary, the addition of ALUM to broiler litter improved broiler performance at 6 weeks, while increasing nitrogen content from the litter used as the nitrogen fertilizer although ammonia emission was increased in T$_1$ at 6 weeks.

키워드

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