Effects of Processing Technology and Wet Fermented Soybean Meal Supplemental Levels on Pellet Feed Quality, Growth Performance and Antioxidant Capability of Broilers

LU Chunling; QIN Yuchang; LI Jun; GU Xu; ZHANG Yu; DONG Yingchao; NIU Libin; SHANG Fangfang; YANG Jie; LI Junguo

doi:10.3969/j.issn.1006-267x.2022.02.024

2022 , Vol. 34 >Issue 2: 908 - 923

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.02.024

RESEARCH PAPER

Effects of Processing Technology and Wet Fermented Soybean Meal Supplemental Levels on Pellet Feed Quality, Growth Performance and Antioxidant Capability of Broilers

LU Chunling ,
QIN Yuchang ,
LI Jun ,
GU Xu ,
ZHANG Yu ,
DONG Yingchao ,
NIU Libin ,
SHANG Fangfang ,
YANG Jie ,
LI Junguo

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1. Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
3. China Agricultural Science and Technology Press, Beijing 100081, China

Received date: 2021-07-18

Online published: 2022-02-15

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Abstract

This experiment was conducted to study the effects of processing technology and wet fermented soybean meal supplemental levels, and their interaction on pellet feed quality, growth performance, antioxidant capacity and intestinal morphology of broilers. A 2×3 two-factor experimental design was adopted. Two processing technology methods were normal conditioning and pelleting (NCP) and high-temperature conditioning and low-temperature pelleting (HCLP). The supplemental levels of wet fermented soybean meal were 0, 5% and 10%. A total of 480 Arbor Acres (AA) broilers of one-day-old were randomly divided into 6 groups with 8 replicates per group and 10 broilers per replicate (half male and half female) according to the principle of similar body weight. The experiment lasted for 42 days and was divided into two stages as early stage (1 to 21 days of age) and late stage (22 to 42 days of age). The results showed as follows:1) compared with NCP technology, HCLP technology significantly increased the starch gelatinization degree, pellet durability index (PDI) and pellet hardness of the early and late feed for broilers (P<0.05). The PDI of the late feed for broilers was significantly increased with the increase of wet fermented soybean meal supplemental level (P<0.05). The interaction between processing technology and wet fermented soybean meal supplemental level had a significant effect on the pellet hardness of the early feed and starch gelatinization degree and PDI of the late feed for broilers (P<0.05). 2) Compared with NCP technology, HCLP technology significantly increased the average daily gain of broilers from 1 to 21 days of age (P<0.05). The feed to gain ratio (F/G) of broilers from 1 to 21, 22 to 42 and 1 to 42 days of age was significantly decreased with the increase of wet fermented soybean meal supplemental level (P<0.05). The interaction between processing technology and wet fermented soybean meal supplemental level had a significant effect on the average daily feed gain of broilers from 1 to 21 days of age (P<0.05). 3) Compared with NCP technology, HCLP technology significantly reduced the redness in breast muscle of broilers (P<0.05). The interaction between processing technology and wet fermented soybean meal supplemental level had a significant effect on the lightness in leg muscle of broilers (P<0.05). 4) The serum activities of superoxide dismutase, glutathione peroxidase and catalase of broilers were significantly increased (P<0.05), while the serum malondialdehyde content was significantly decreased with the increase of wet fermented soybean meal level (P<0.05), which indicated that wet fermented soybean meal could improve the antioxidant capability of broilers. The interaction between processing technology and wet fermented soybean meal supplemental level had a significant effect on the antioxidant capability of broilers (P<0.05). 5) Compared with NCP technology, HCLP technology significantly increased the villus height and the ratio of villus height to crypt depth (V/C) in jejunum and ileum of broilers (P<0.05), and significantly decreased the crypt depth and increased the V/C in duodenum (P<0.05). The villus height and V/C in duodenum, jejunum and ileum of broilers were significantly increased (P<0.05), while the crypt depth was significantly decreased with the increase of wet fermented soybean meal level (P<0.05). The crypt depth and V/C in duodenum and jejunum, as well as the villus height in jejunum and ileum, were significantly influenced by the interaction between processing technology and wet fermented soybean meal supplemental level (P<0.05). In conclusion, dietary 5% to 10% wet fermented soybean meal with HCLP technology can improve the pellet feed quality, growth performance, antioxidant capacity and intestinal morphology of broilers.

Key words： processing technology; pellet feed quality; wet fermented soybean meal; broilers; growth performance; antioxidant capability

Cite this article

LU Chunling , QIN Yuchang , LI Jun , GU Xu , ZHANG Yu , DONG Yingchao , NIU Libin , SHANG Fangfang , YANG Jie , LI Junguo . Effects of Processing Technology and Wet Fermented Soybean Meal Supplemental Levels on Pellet Feed Quality, Growth Performance and Antioxidant Capability of Broilers[J]. Chinese Journal of Animal Nutrition, 2022 , 34(2) : 908 -923 . DOI: 10.3969/j.issn.1006-267x.2022.02.024

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