Impact of Feeding Multiple Probiotics on Productivity, Intestinal Microflora and Fecal Noxious Gas Emission in Broiler Chicks

혼합생균제 급여가 육계의 생산성, 장내 미생물 및 계분 유해가스 발생에 미치는 영향

  • 박재홍 (전북대학교 동물자원과학과, 전북대학교 바이오식품소재 개발 및 산업화 연구센터, 농업과학기술 연구소) ;
  • 류명선 (전북대학교 동물자원과학과, 전북대학교 바이오식품소재 개발 및 산업화 연구센터, 농업과학기술 연구소) ;
  • 김종설 (전북대학교 동물자원과학과, 전북대학교 바이오식품소재 개발 및 산업화 연구센터, 농업과학기술 연구소) ;
  • 김상호 (축산기술연구소 가금과) ;
  • 이동호 (포휴먼텍) ;
  • 리홍룡 (연변대학교 농학원 동물과학과) ;
  • 류경선 (전북대학교 동물자원과학과, 전북대학교 바이오식품소재 개발 및 산업화 연구센터, 농업과학기술 연구소)
  • Published : 2003.09.01

Abstract

This experiment was conducted to investigate the influence of dietary supplementation of two different types of multiple probiotics in broiler chicks. Four hundred one day old male broiler chicks(Ross ${\times}$ Ross) were raised in the floor pen with five treatments(0, A: 0.10, 0.20%, B: 0.10, 0.20% of probiotics), consisting of 5 replicates for 5 weeks. Weight gain, feed intake and feed conversion were measured weekly, Total Lactobacillus, yeast, E. coli, Salmonella were examined from ileum and cecum at the end of experiment. Sera protein, cholesterol and ND vaccine titer were measured and fecal COD, CO$_2$ and NH$_3$ were detected in 24 hours after collection. Weight gain of chickes fed both types of probiotics increased for the first three weeks and showed significantly higher for the rest two weeks. Feed intake tended to be high in probiotics treatments compared with contro(P<0.05)1. Feed conversion improved significantly in B types of 0.2% probiotics compared with control. Total number of Salmonella was not consistent in ileum among treatments, whereas E. coli tended to be decreased in both types of probiotics compared with control. NH$_3$ and CO$_2$ emission of feces were decreased in both types of probiotics, but it was not statistically different(p>0.05). COD of chicks fed both probiotics was lower than control. There were no significantly different breast meat(P>0.05). Total cholesterol decreased in probiotics groups regardless of it's type. ND antibody vaccine titer was prone to be a small increments.

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