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논문 기본 정보

자료유형
학술저널
저자정보
송민호 (충남대학교) 김병헌 (충남대학교) Jin Ho Cho (Chungbuk National University) Hyunjin Kyoung (Chungnam National University) 박상우 (충남대학교) Jee-Yeon Cho (DSM Nutrition Korea Ltd.) Kyeong Il Park (Division of Animal and Dairy Science Chungnam National University) 김현범 (단국대학교) Jeong Jae Lee (Chungnam National University)
저널정보
한국축산학회(구 한국동물자원과학회) 한국축산학회지 한국축산학회지 제64권 제3호
발행연도
2022.5
수록면
462 - 470 (9page)

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The addition of dietary proteases (PRO) to weaner diets hydrolyzes soybean-based anti- nutritive factors and improves weaned pig’s dietary digestibility and growth performance. Therefore, this study explores the effects of PRO in a lower crude protein (CP) level diet than that in a commercial diet on the growth performance, nutrient digestibility, and intestinal morphology of weaned pigs. A total of 90 weaned pigs were randomly assigned to 3 dietary treatments with 6 pigs per pen and 5 replicated pens per treatment using a randomized complete block design (block = body weight [BW]): 1) a commercial weaner diet as a positive control (PC; phase1 CP = 23.71%; phase2 CP: 22.36%), 2) lower CP diet than PC as a negative control (NC; 0.61% less CP than PC), and 3) an NC diet with 0.02% PRO. Pigs fed PC and PRO had higher (p < 0.05) final BW, average daily gain, and/or gain to feed ratio for the first three weeks and the overall experimental period than NC. The PC and PRO groups had greater (p < 0.05) apparent ileal digestibility of dry matter, CP, and energy than the NC group. Moreover, pigs fed PC and PRO increased (p < 0.05) apparent total tract digestibility of CP compared with those fed NC. In addition, the PRO group had a higher number of goblet cells than the PC and NC groups. However, pig fed PC and PRO increased (p < 0.05) villus height and height to crypt depth ratio in the ileum compared with those fed NC. In conclusion, PRO supplementation in a commercial weaner diet with low CP levels improves growth rate and nutrient digestibility by modulating the intestinal morphology of weaned pigs.

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