Earticle

초록

영어

The present study was conducted to investigate the effects on growth performance, nutrient digestibility, and gut health of broiler chickens when a dietary supplementation of multienzymes was added to diets, containing different energy levels. A total of 480 broiler chickens of similar body weight (Ross 308, 1-day-old) were randomly subjected to four treatments. The dietary treatments included a corn-soybean meal-based diet supplemented with: multienzyme (amylase+protease+ mannanase+xylanase+phytase), 0.05% enzyme, and different energy levels (3010 and 3060 kcal/kg). The experimental diets were fed to the chicks in a mash form for 35 days in two phases (1–21 d, phase I; and 22–35 d, phase II). During the overall period, chicks fed with diets supplemented with multienzymes had a better weight gain (p<0.05) and feed conversion ratio (FCR) than those fed with diets without enzymes. There was no difference in the growth rate and FCR among the chicks fed with diets supplemented with enzymes, even though the dietary energy levels were different. The apparent fecal and ileal digestibility of dry matter, gross, crude protein, calcium, and phosphorus were significantly enhanced (p<0.05). The population of cecal and ileal Lactobacillus spp. was significantly increased (p<0.05), and Clostridium spp. and coliforms were significantly decreased (p<0.05) in diets supplemented with enzymes. Villus height and villus height to crypt depth ratio in the small intestine was also significantly enhanced (p<0.05) in diets supplemented with enzymes. In conclusion, multienzyme supplementation had positive effects on the weight gain of broilers, FCR, digestibility of nutrients, and on the growth of intestinal microbiota.

목차

ABSTRACT1
 Ⅰ. 서론
 Ⅱ. 재료 및 방법
  1. 복합효소제
  2. 공시동물, 시험사료 및 사양관리
  3. 조사항목 및 방법
  4. 통계처리
 Ⅲ. 결과 및 고찰
  1. 사양성적과 영양소 소화율
  2. 혈액성상
  3. 장 내 미생물
  4. 소장 morphology
 Ⅳ. 요약
 사사
 Ⅴ. REFERENCES

저자

• 심영호 [ Young Ho Shim | ㈜사조바이오피드 ]
• 김진수 [ Jin Soo Kim | 강원대학교 동물생명과학대학 ]
• Hosseindoust Abdolreza [ 강원대학교 동물생명과학대학 ]
• Santosh Laxman Ingale [ Advanced Enzyme Technologies Ltd. ]
• 최요한 [ Yo Han Choi | 강원대학교 동물생명과학대학 ]
• 김민주 [ Min Ju Kim | 강원대학교 동물생명과학대학 ]
• 오승민 [ Seung Min Ohh | 강원대학교 동물생명과학대학 ]
• 함형빈 [ Hyung Bin Ham | 강원대학교 동물생명과학대학 ]
• 채병조 [ Byung Jo Chae | 강원대학교 동물생명과학대학 ] Corresponding author

참고문헌