Effects of Rice By-Products on Growth Performance, Carcass Traits, Meat Quality and Intestinal Mucosal Morphology of Ningxiang Pigs

LONG Jifei; LONG Cimin; FAN Xiangyu; CHEN Fu; ZHAO Yurong; HE Jianhua

doi:10.3969/j.issn.1006-267x.2020.01.014

2020 , Vol. 32 >Issue 1: 92 - 98

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.01.014

Effects of Rice By-Products on Growth Performance, Carcass Traits, Meat Quality and Intestinal Mucosal Morphology of Ningxiang Pigs

LONG Jifei ,
LONG Cimin ,
FAN Xiangyu ,
CHEN Fu ,
ZHAO Yurong ,
HE Jianhua

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Hunan Co-Innovation Center of Safety Animal Production, Changsha 410128, China;
3. Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China

Received date: 2019-07-07

Online published: 2020-01-19

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Abstract

This experiment was conducted to study the effects of rice by-products (broken rice and rice bran) on growth performance, carcass traits, meat quality and intestinal mucosal morphology of Ningxiang pigs. Forty-eight growing Ningxiang pigs with body weight of (17.0±2.0) kg were randomly divided into 2 groups with 4 replicates in each group and 6 pigs in each replicate, half male and half female. Pigs in the 2 groups were fed the corn-soybean diet (control group) and broken rice-rice bran diet (experimental group), respectively. Dietary nutrient levels were similar, and the experiment lasted for 180 days. The results showed as follows:1) compared with the control group, the average daily feed intake of experimental group was increased by 13.76% (P>0.05), the average daily gain was significantly increased by 23.38% (P<0.01), and the feed to gain ratio was significantly decreased by 8.35% (P<0.05). 2) Compared with the control group, the carcass oblique length of experimental group was increased significantly by 15.61% (P<0.05), the carcass straight length was significantly increased by 11.48% (P<0.05), and there were no significant differences in other carcass traits between the two groups (P>0.05). 3) There were no significant differences in meat quality indexes between the two groups (P>0.05). 4) Compared with the control group, the ileal villus height of experimental group was significantly increased by 13.13% (P<0.05). In conclusion, the replacement of corn and soybean meal in the Ningxiang pig commodity diet by broken rice and rice bran can improve the growth performance and promote the development of intestinal tract.

Key words： rice by-products; Ningxiang pigs; growth performance; carcass traits; meat quality

Cite this article

LONG Jifei , LONG Cimin , FAN Xiangyu , CHEN Fu , ZHAO Yurong , HE Jianhua . Effects of Rice By-Products on Growth Performance, Carcass Traits, Meat Quality and Intestinal Mucosal Morphology of Ningxiang Pigs[J]. Chinese Journal of Animal Nutrition, 2020 , 32(1) : 92 -98 . DOI: 10.3969/j.issn.1006-267x.2020.01.014

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