Effects of Dietary Mineral Extract from Granite on the Performance of Broiler Chickens and Ammonia Production from the Litter

화강암 추출 활성 광물질의 사료 내 첨가가 육계의 생산성과 깔짚 암모니아 발생에 미치는 영향

  • Cho J. H. (Department of Animal Science and Technology, College of Industrial Science, Chung-Ang University) ;
  • Jung B. Y. (Department of Animal Science and Technology, College of Industrial Science, Chung-Ang University) ;
  • Paik I. K. (Department of Animal Science and Technology, College of Industrial Science, Chung-Ang University)
  • 조중호 (중앙대학교 산업과학대학 동물자원과학과) ;
  • 정병윤 (중앙대학교 산업과학대학 동물자원과학과) ;
  • 백인기 (중앙대학교 산업과학대학 동물자원과학과)
  • Published : 2005.03.01

Abstract

An experiment was conducted to investigate the effects of mineral extract from granite on the performance, ammonia production from the litter, components of blood, Newcastle Disease (ND) titer and intestinal microflora in broiler chickens. Nine hundred sixty one-day-old broiler chickens (Ross) were assigned to five treatments: C; control, Zeolite; control + zeolite 1$\%$, AM10: control + active mineral water $10\%$ adsorbed zeolite $1\%$, AM20; control + active mineral water $20\%$ adsorbed zeolite $1\%$ and AM30; control + active mineral water $30\%$ adsorbed zeolite $1\%$. Each treatment consisted of four replicates with 48 broiler chicks for feeding trial. In order to test the effect of ND vaccine on the components of blood, ND titer and intestinal microflora, a separate group of 48 broiler chicks were assigned to the same 5 treatment as the feeding trial plus one negative control (No ND vaccine). Weight gain, feed intake, feed conversion and mortality were not significantly affected by dietary treatments but AM30 tended to be higher than other treatments in weight gain and feed intake, especially during later period (4 to 5 weeks of age). Ammonia production from the litter of AM30 treatment was significantly (P<0.01) lower than the control. Components of blood and ND titer in serum of broiler chickens were not significantly affected by treatments but MCHC (mean corpuscular hemoglobin concentration) of blood was significantly lower (P<0.05) in Zeolite treatment compared to others. The colony forming unit (CFU) of Clostridium perfringens in the small intestinal content of all zeolite and AM treated groups was significantly (P<0.01) lower than the control while the CFU of Escherichia coli was not significantly affected. The CFU of Lactobacilli in AM30 treatment was significantly (P<0.05) higher than the control. In conclusion, dietary supplement of active mineral water adsorbed to zeolite at $30\%$ level (AM30) tended to improve growth performance of broiler chickens and significantly reduced ammonia production from the litter. It also significantly increased CFU of intestinal Lactobacilli.

화강암으로부터 추출한 활성 광물질액이 육계의 생산성과 깔짚에서 암모니아 발생, 육계 혈액 성상 및 혈청 내 ND titer, 장내 미생물 변화에 미치는 영향을 조사하기 위해 5주 동안 육계 실험을 실시하였다. 960수의 갓 부화한 육계 병아리를 공시하였고 5처리 4반복으로 반복당 48수씩 배치하여 생산성 및 암모니아 발생에 대해 조사하였다(C; control, zeolite; control + zeolite $1\%$, AM10; control + 활성 미네랄수 $10\%$흡착 zeolite $1\%$, AM20 control + 활성 미네랄수 $20\%$ 흡착 zeolite $1\%$, AM30; control + 활성 미네랄수 $30\%$ 흡착 zeolite $1\%$). 또한 사양 시험과 동시에 48수의 육계 병아리들을 반복당 2수씩 6처리 4반복으로 배치하고 ND 백신을 접종하여 ND titer와 혈액 성상 및 장내 미생물 변화에 대해 조사하였다. 증체와 사료 섭취량, 사료 효율, 폐사율 등은 처리간의 유의적인 차이는 없었다. 그러나 증체량과 사료 섭취 량에서 AM30구가 처리구들 중에서 가장 높았는데 특히 4, 5주간의 증체량이 높았다. 사료 전환율(사료섭취량/증체량)에서 모든 처리구들이 대조구보다 높게 나타났다. 폐사율은 모든 처리구들이 대조구보다 낮았다. 깔짚에서 암모니아 발생은 처리간에 고도의 유의적인 차이(P<0.01)가 있었는데 AM30 구가 가장 낮았다. ND titer는 모든 처리구들간에 유의한 차가 없었다. 혈액 성상에 있어서 처리구들간에는 유의한 차가 없었는데 평균 적혈구 헤모글로빈 농도(MCHC)에 있어서는 zeolite 구가 타 처리구들에 비해 유의하게(P<0.05) 낮았다. 장내 미생물 중에 Clostridium perfringens의 수는 모든 처리구들이 대조구보다 유의하게(P<0.01) 낮았고 Ercherichia coli의 수는 유의한 차이가 없었다. Lactobacilli의 수는AM30구가 대조구보다 유의하게(P<0.05) 높았다. 결론적으로 활성 미네랄수 $30\%$흡착 zeolite의 사료 내 첨가는 대조구에 비하여 육계의 증체율을 개선시키는 경향이 있었으며 깔짚에서 암모니아 가스 발생도 유의하게 감소시켰고 장내 Lactobacilli의 수를 유의하게 증가시켰다.

Keywords

References

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