SWINE NUTRITION AND FEED

Determination of Available Energy and Nutrient Apparent Total Tract Digestibility of Different Fibrous Ingredients in Growing Pigs

  • ZHAO Jinbiao ,
  • SONG Xiaoming ,
  • LI Zhongchao ,
  • ZANG Jianjun ,
  • NI Shouqing ,
  • LIU Ling
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  • 1. National Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. Beijing Tonglixingke Agricultural Science and Technology Co., Ltd., Beijing 100193, China;
    3. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China

Received date: 2021-03-16

  Online published: 2021-11-10

Supported by

 

Abstract

The objective of this study was conducted to determine the digestible energy, metabolizable energy and nutrient apparent total tract digestibility of different fibrous ingredients in growing pigs. Thirty healthy "Duroc×Landrace×Large White" crossed pigs with average initial body weight of (45.0±2.1) kg were randomly divided into 5 groups with 6 replicates per group and 1 pig per replicate. Pigs in 5 groups were fed a corn basal diet which contained 97.4% corn and 4 fibrous diets which contained 29.22% soybean hull, soybean residue, apple pomace and fermented apple pomace, respectively. The experiment lasted for 22 days, including 7 days of cages adaptation period, 10 days of diets adaptation period and 5 days of total urine and feces collection period. The results showed as follows:1) compared with the corn basal diet, the apparent total tract digestibility of gross energy, crude protein and ether extract and metabolizable energy/gross energy of growing pigs fed with soybean hull, soybean residue, apple pomace and fermented apple pomace diets were significantly decreased (P<0.05), while the apparent total tract digestibility of total dietary fiber, insoluble dietary fiber, neutral detergent fiber and acid detergent fiber was significantly increased (P<0.05). Compared with the soybean hull and soybean residue diets, the apparent total tract digestibility of gross energy, crude protein and acid detergent fiber of growing pigs fed with apple pomace and fermented apple pomace diets was significantly decreased (P<0.05), and the digestible energy/gross energy and metabolizable energy/gross energy of growing pigs fed with fermented apple pomace diet were significantly decreased (P<0.05). 2) The apparent total tract digestibility of acid detergent fiber, insoluble dietary fiber and gross energy of soybean residue was significantly higher than that of apple pomace and fermented apple pomace (P<0.05). The digestible energy and metabolizable energy of soybean hull were significantly higher than those of soybean residue, apple pomace and fermented apple pomace (P<0.05). The digestible energy/gross energy and metabolizable energy/gross energy of soybean hull and soybean residue were significantly higher than those of apple pomace and fermented apple pomace (P<0.05), while the metabolizable energy/digestible energy was significantly lower than that of apple pomace and fermented apple pomace (P<0.05). In conclusion, different fibrous ingredients have large differences in digestible energy, metabolizable energy and nutrient apparent total tract digestibility of growing pigs, and the feeding value in growing pigs of soybean hull and soybean residue are better than apple pomace and fermented apple pomace.

Cite this article

ZHAO Jinbiao , SONG Xiaoming , LI Zhongchao , ZANG Jianjun , NI Shouqing , LIU Ling . Determination of Available Energy and Nutrient Apparent Total Tract Digestibility of Different Fibrous Ingredients in Growing Pigs[J]. Chinese Journal of Animal Nutrition, 2021 , 33(11) : 6114 -6122 . DOI: 10.3969/j.issn.1006-267x.2021.11.013

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