Swine and Poultry Nutrition

Effects of Low Protein Diets Balanced with Amino Acids on Growth Performance, Carcass Characteristic and Intestinal Health of Growing Pigs

  • ZHANG Guijie ,
  • LU Ning ,
  • QIAO Shiyan
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  • 1. Department of Animal Science, Ningxia University, Yinchuan 750021, China;
    2. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2012-06-20

  Online published: 2012-12-03

Abstract

The aim of this study was to investigate the growth performance, carcass characteristic, meat quality and intestinal health of growing pigs fed low protein diets balanced with amino acids. Sixteen growing pigs were all randomly allocated to 2 groups of a normal protein diet (dietary crude protein content was 18%, and standardized ileal digestible lysine was 0.93%) and a low protein diet (dietary crude protein content was 14%, and standardized ileal digestible lysine was 1.03%), and each group has 8 replicates and 1 pig per replicate. The experiment lasted for 39 d. The results showed that compared with the normal protein diet, lightness and yellowness of longissimus muscle of growing pigs received the low protein diet balanced with amino acids were significantly increased (P<0.05 or P<0.01). Dietary protein content had no effect on the villus morphology among different intestinal positions, but there was a trend of increasing villus height/crypt ratio with protein content reducing (P=0.09). There was no significant difference in growth performance, carcass characteristic and meat quality between the 2 groups (P>0.05). In conclusion, compared with the normal protein diet, growing pigs fed the low protein diet (dietary standardized ileal digestible lysine is 1.03%) balanced with amino acids obtain similar growth performance. Moreover, reducing dietary protein content shows an improve trend for intestinal health status of growing pigs.

Cite this article

ZHANG Guijie , LU Ning , QIAO Shiyan . Effects of Low Protein Diets Balanced with Amino Acids on Growth Performance, Carcass Characteristic and Intestinal Health of Growing Pigs[J]. Chinese Journal of Animal Nutrition, 2012 , 24(12) : 2326 -2334 . DOI: 10.3969/j.issn.1006-267x.2012.12.006

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