Molecular Nutrition

Effects of Dietary Glutamine Supplemental Level on Fur Quality and Intestinal Barrier of Rex Rabbits during Weaner to 3 Months of Age

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  • College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China

Received date: 2016-11-11

  Online published: 2017-05-13

Abstract

The experiment was conducted to study the effects of dietary glutamine supplemental level on fur quality and intestinal barrier of Rex rabbits during weaner to 3 months of age. One hundred and eighty weaned Rex rabbits with similar body weight were randomly assigned to 5 groups with 36 replicates in each group and 1 rabbit in each replicate. Rabbits in 5 groups were fed diets supplemented with 0 (control), 0.3%, 0.6%, 0.9% and 1.2% glutamine, respectively. The pre-test period lasted for 7 days, and the experimental period lasted for 53 days. The results showed that dietary glutamine supplemental level did not significantly affect the fur area, fur weight, hair length and hair thickness of growing Rex rabbits (P>0.05). Dietary glutamine supplemental level significantly affected the villus height to crypt depth in duodenum of growing Rex rabbits (P<0.05). Compared with the control group, dietary supplemental with 0.9% glutamine significantly increased the mRNA expression of zonula occludens in jejunum (P<0.05), but significantly reduced the mRNA expression of pyruvate kinase in jejunum (P<0.05); in addition, dietary supplemented with 0.9% glutamine significantly increased the content of secretory immunoglobulin A in duodenal mucosa (P<0.05). In conclusion, although dietary glutamine supplemental level does not affect the fur quality of growing Rex rabbits, improve the intestinal mechanical barrier and immune barrier function. Under this experimental condition, the appropriate glutamine supplemental level in the diet is 0.9% for Rex rabbits during weaner to 3 months of age.

Cite this article

LIU Hongli, FU Chaohui, LIU Lei, LI Fuchang . Effects of Dietary Glutamine Supplemental Level on Fur Quality and Intestinal Barrier of Rex Rabbits during Weaner to 3 Months of Age[J]. Chinese Journal of Animal Nutrition, 2017 , 29(5) : 1803 -1809 . DOI: 10.3969/j.issn.1006-267x.2017.05.041

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