사료내 생균제의 첨가가 육계의 성장, 혈액성상 및 분내 유해가스 함량에 미치는 영향

Effects of Probiotics Supplementation on Growth Performance , Blood Composition, and Fecal Noxious Gas of Broiler Chickens

  • 권오석 (단국대학교 동물자원과학과) ;
  • 김인호 (단국대학교 동물자원과학과) ;
  • 홍종욱 (단국대학교 동물자원과학과) ;
  • 한영근 (농협중앙회) ;
  • 이상환 (단국대학교 동물자원과학과) ;
  • 이제만 (단국대학교 동물자원과학과)
  • 발행 : 2002.03.01

초록

본 연구에서는 생균제를 육계사료에 첨가하였을 경우 육계의 성장, 혈액 성상 및 분 중 암모니아 가스 농도에 미치는 영향을 구명하기 위해 5주간 실시하였다. 시험은 2일령의 Arbor Acre Broiler(♂) 병아리 288수를 공시하여 처리구는 육계전기사료를 대조구(Con ; basal diet)로 하여 생균제를 0.5% (PBO.5)첨가한 처리구 및 처음 1주간 생균제를 1.0%(PBI.0), 0.5%를 2주간, 0.25%를 2주간 첨가 수준을 줄여 급여한 3처리구로 하였다. 증체량에서는 전 사육기간동안 통계적인 차이를 나타내지는 않았다. 전체 사료 섭취량에서는 대조구와 PBI.0 처리구가 각각 2550(g)과 2361 (g)으로 유의적인 차이를 보였다(P<0.05) 건물의 소화율은 PB0.5 처리구가 80.84(%)로 대조구의 79.34(%) 혹은 PBI.0 처리구의 79.71(%)에 비해 더 높은 (p<0.05) 것으로 나타났다. 질소의 소화율에서는 처리구간의 유의적인 차이를 보이지는 않았지만 PB처리구가 대조구에 비해서 약간 높은 경향을 보였다. 혈청내 Total cholesterol, Triglyceride, HDL-과 LDL-cholesterol 함량은 서로간의 유의적인 차이를 보이지 않았다. 육계 분내 암모니아태 질소 함량에 있어서는 대조구와 PB 0.5, 및 PB 1.0 처리구가 각각 260.71 (ppm) , 159.18 (ppm) , 126.17 (ppm)으로 처리구간에 유의적인(P<0.75) 차이를 보였다. 결론적으로 육계 사료내 생균제의 첨가는 암모니아태 질소의 발생량을 감소시키는 것으로 사료된다.

This study was conducted to investigate the effects of feeding probiotics on the growth performance, blood composition, and fecal noxious gas in broiler chickens. Two hundred eighty eight broiler chickens were randomly allocated into three treatments with eight replications for live weeks. Dietary treatments included 1) Control (basal diet), 2) PB 0.5 (basal diet +0.5% probiotics), 3) PBI.0 (basal diet + 1.0% Probiotics for 0 to 1 wk of age, 0.5% probiotics for 1 to 3 wk of age, 0.25% probiotics for 3 to 5 wk of age) . There were no significantly difference among treatments for the body weight gain, but the feed intake of control group significantly (p<0.05) increased as compared with the PBI.0 group in overall experimental period. Digestibility of DM in PB0.5 group (80.84%) was significantly (p<0.05) improved as compared with those in PB 1.0 (79.34%) or control group (79.15%). Although N digestibility was slightly higher in broiler chicks fed probiotics than Control, there was no significance between probiotic groups. Total cholesterol, triglyceride, HDL- and LDL-cholesterol were not significantly different among the treatments. NH$_3$-N concentration in feces with PBI .0 treatment was lower (p<0.05) than Control or PB 0.5 treatments. These results indicated that locally obtained probiotics can be effectively used for reduction of ammonia nitrogen.

키워드

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