Effects of Dietary Protein Levels on Growth Performance, Serum Biochemical Indices and Carcass Characteristics of Fattening Dongchuan Pigs

HUO Yongjiu; LIU Zhengxu; FANG Wei; XUAN Han; ZHANG Wei; YU Lihuai; BAO Wenbin; ZHAO Guoqi

doi:10.3969/j.issn.1006-267x.2015.08.023

2015 , Vol. 27 >Issue 8: 2502 - 2508

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.08.023

Molecular Nutrition

Effects of Dietary Protein Levels on Growth Performance, Serum Biochemical Indices and Carcass Characteristics of Fattening Dongchuan Pigs

HUO Yongjiu ,
LIU Zhengxu ,
FANG Wei ,
XUAN Han ,
ZHANG Wei ,
YU Lihuai ,
BAO Wenbin ,
ZHAO Guoqi

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1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
2. Animal Disease Control and Prevention Center of Guli District, Changshu City, Changshu 215500, China

Received date: 2015-02-06

Online published: 2015-08-13

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Abstract

This study aimed to evaluate the effects of different dietary crude protein levels on growth performance, serum biochemical indices and carcass characteristics of fattening Dongchuan pigs. Forty-eight Dongchuan pigs were randomly assigned to 3 groups with 4 replicates per group and 4 pigs per replicate (half male and half female). The pigs were fed with diets containing 11.5% (low protein group), 12.5% (medium protein group) and 13.5% (high protein group) crude protein, respectively. The feeding transition period lasted for 3 days and the feeding period lasted for 80 days. The results showed that the final weight of high protein group was significantly higher than that of low protein group (P<0.05), and average daily gain, average daily feed intake, feet to gain of high protein group were slightly improved comparing with low protein group. The serum creatinine content of high protein group was significantly higher than that of low protein group (P<0.05). Moreover, the loin eye area and lean meat percentage of high protein group were increased to some extent compared with low protein group, and the loin eye area was enhanced by 41.05%. In conclusion, the appropriate crude protein level for fattening Dongchuan pigs can be set as 13.5%.

Key words： Dongchuan pigs; protein levels; growth performance; serum biochemical indices; carcass characteristics

Cite this article

HUO Yongjiu , LIU Zhengxu , FANG Wei , XUAN Han , ZHANG Wei , YU Lihuai , BAO Wenbin , ZHAO Guoqi . Effects of Dietary Protein Levels on Growth Performance, Serum Biochemical Indices and Carcass Characteristics of Fattening Dongchuan Pigs[J]. Chinese Journal of Animal Nutrition, 2015 , 27(8) : 2502 -2508 . DOI: 10.3969/j.issn.1006-267x.2015.08.023

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