Dietary protease improves growth performance, nutrient digestibility, and intestinal morphology of weaned pigs

被引：43

作者：

Park, Sangwoo ^{[1
]}

Lee, Jeong Jae ^{[1
]}

Yang, Boung Mo ^{[1
]}

Cho, Jin Ho ^{[2
]}

Kim, Soyun ^{[1
]}

Kang, Joowon ^{[1
]}

Oh, Sejong ^{[3
]}

Park, Dong-Jun ^{[4
]}

Perez-Maldonado, Rider ^{[5
]}

Cho, Jee-Yeon ^{[6
]}

Park, Il-Hun ^{[6
]}

Kim, Hyeun Bum ^{[7
]}

Song, Minho ^{[1
]}

机构：

[1] Chungnam Natl Univ, Div Anim & Dairy Sci, Daejeon 34134, South Korea

[2] Chungbuk Natl Univ, Div Food & Anim Sci, Cheongju 28644, South Korea

[3] Chonnam Natl Univ, Dept Anim Sci, Gwangju 61186, South Korea

[4] Korea Food Res Inst, Wonju 55365, South Korea

[5] DSM Nutr Prod Asia Pacific, Singapore 117440, Singapore

[6] DSM Nutr Korea Ltd, Seoul 06675, South Korea

[7] Dankook Univ, Dept Anim Resources Sci, Cheonan 31116, South Korea

来源：

JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY | 2020年 / 62卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Growth performance; Intestinal morphology; Nutrient digestibility; Protease; Weaned pigs; CARCASS CHARACTERISTICS; BLOOD-CONSTITUENTS; GUT FUNCTION; AMINO-ACIDS; SUPPLEMENTATION; HEALTH; ABSORPTION; EXPRESSION; DIARRHEA; PIGLETS;

D O I：

10.5187/jast.2020.62.1.21

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

This study was conducted to evaluate effects of dietary protease (PR) on growth performance, nutrient digestibility, and intestinal morphology of weaned pigs. A total of 75 weaned pigs [7.06 +/- 0.18 kg of average body weight (BW); 28 day old] were randomly allotted to 3 dietary treatments in a randomized complete block design (blocks = BW and sex): a diet based on corn and soybean meal to meet the requirement of crude protein (CP) as a positive control (PC; CP = 24.49%), a low protein diet as a negative control (NC; CP = 22.51%), and NC + 0.02% PR. The PR used in this study was a commercial product containing 75,000 protease units/g derived from Nocardiopsis prasina produced in Bacillus licheniformis. Pigs were fed the dietary treatments for 6 weeks and the diets containing 0.2% chromic oxide for the last week of this study. Blood, feces, ileal digesta, and ileum samples were collected from randomly selected two pigs in each pen on respective time points. Measurements were growth performance, apparent ileal digestibility (AID) and apparent total tract digestibility (ATTD) of dry matter (DM), CP, and energy, frequency of diarrhea, packed cell volume (PCV), and ileal morphology of weaned pigs. Pigs fed PC and PR had higher (p < 0.05) final BW, average daily gain (ADG), and gain to feed ratio (G:F) during overall experimental period than those fed NC. Pigs fed PC and PR had higher (p < 0.05) AID or ATTD of DM, CP, or energy than those fed NC. Moreover, pigs fed PR had higher ratio between villus height and crypt depth (p < 0.05) and number of goblet cells (p < 0.05) than those fed NC. Addition of PR decreased (p < 0.05) frequency of diarrhea for the first two weeks after weaning compared with PC and NC. In addition, pigs fed PR had lower (p < 0.05) PCV on d 14 after weaning than those fed PC and NC. In conclusion, addition of PR in nursery diets with a low protein level significantly improved growth performance, nutrient digestibility, and intestinal morphology of weaned pigs.

引用

页码：21 / 30

页数：10

共 34 条

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