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펄자임 첨가사료가 육계의 생산성과 소화기관의 발달에 미치는 영향

Effects of Dietary Pearlzyme on Growth Performance and Development of Digestive Organs in Broilers

  • 김지민 (경상대학교 축산학과) ;
  • 강석민 (경상대학교 대학원 응용생명과학부(BK21 Plus Program)) ;
  • 윤정용 (경상대학교 대학원 응용생명과학부(BK21 Plus Program)) ;
  • 양영록 (경상대학교 축산학과) ;
  • 김원 (밀테크(주)) ;
  • 장정순 (펄자임(주)) ;
  • 최양호 (경상대학교 축산학과)
  • Kim, Jimin (Department of Animal Science, Gyeongsang National University) ;
  • Kang, Seokmin (Division of Applied Life Sciences (BK21 Plus Program), Gyeongsang National University) ;
  • Yoon, Jeong Yong (Division of Applied Life Sciences (BK21 Plus Program), Gyeongsang National University) ;
  • Yang, Young-Rok (Department of Animal Science, Gyeongsang National University) ;
  • Kim, Won (Mill Tech, Inc.) ;
  • Jang, Jung-Soon (Pearlzyme, Inc.) ;
  • Choi, Yang-Ho (Department of Animal Science, Gyeongsang National University)
  • 투고 : 2015.09.21
  • 심사 : 2015.11.26
  • 발행 : 2015.12.31

초록

본 연구의 목적은 펄자임(갯벌 미생물 유래 단백질분해 효소제) 첨가가 육계의 생산성과 소화기관의 길이와 무게에 미치는 영향을 조사하는 것이다. 4일령의 암컷 Ross 240수를 각 15수씩 2개의 처리구(Control vs. Pearlzyme)로 나누어, 처리구당 8개의 펜에 무작위로 배치하였다. 육계는 그 후 32일령까지 4주 동안 2개의 사료(Control vs. Pearlzyme) 중에 하나를 섭취하였다. 그 결과, 펄자임 첨가사료는 급여 첫 한주 동안에 유의적인 증체효과를 보였지만(p<0.05), 시간의 경과와 함께 그 효과는 감소되어 마지막 한 주 동안에는 사료섭취량의 증가에도 불구하고, 증체량 및 사료효율이 유의하게 감소하였다(p<0.05). 대조구에서 4주간의 실험기간 동안 총 3.3%의 폐사율이 발생하였지만, 펄자임 첨가구에서는 폐사계가 전혀 발생되지 않았다. 그러나 펄자임 첨가사료에서는 육계의 소화기관 특히 직장과 맹장의 무게, 그리고 맹장의 길이가 유의하게 증가하였고(p<0.05), 근위의 무게는 증가하고(p=0.071), 소장의 무게는 감소하는(p=0.068) 경향이 있었다. 따라서 본 연구의 결과는, 육계 사료에 첨가된 펄자임은 급여 첫 한 주 동안에는 증체효과를 보였지만, 급여기간이 경과함에 따라 그 효과는 오히려 감소되었으며, 소화기관의 발달에 영향을 미친다는 것을 시사한다.

We investigated the effects of dietary pearlzyme (mudflat-bacteria origin protease) on growth performance and development of digestive organs in broilers. Two hundred forty, 4 day-old female Ross broiler chicks were divided into 2 groups (control vs. pearlzyme) which were randomly housed in 8 pens with 15 chicks/pen. They were fed one of two diets containing pearlzyme at 0 or 0.1% for 4 weeks. Dietary pearlzyme resulted in significant increase in body weight during the first week of the experiment (p<0.05). With age, weight gain and feed efficiency continued to decrease reaching significant level during the last week. Mortality was 3.3% in control but not in pearlzyme during the entire period of the experiment. Dietary pearlzyme resulted in increased weight (p<0.05) in the ceca and rectum, and increased length in the ceca (p<0.05). However, there were tendencies to increase the weight of the gizzard (p<0.071) but to decrease the length of the small intestine (p<0.068). The results of the current study show that dietary pearlzyme affects weight gain and the development of digestive organs.

키워드

참고문헌

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