Effects of Diets Containing Different Levels of Pummelo Leaves on Serum Biochemical Indices, Digestion and Immune Functions of Growing Rabbits

TIAN Gang; XIE Wenmei; YU Bing; CHEN Hang; CAI Jingyi; ZHANG Kai; LIU Hanzhong

doi:10.3969/j.issn.1006-267x.2016.06.021

2016 , Vol. 28 >Issue 6: 1789 - 1795

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.06.021

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Effects of Diets Containing Different Levels of Pummelo Leaves on Serum Biochemical Indices, Digestion and Immune Functions of Growing Rabbits

TIAN Gang ,
XIE Wenmei ,
YU Bing ,
CHEN Hang ,
CAI Jingyi ,
ZHANG Kai ,
LIU Hanzhong

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1. Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China;
2. Institute of Grass-Feeding Livestock, Sichuan Academy of Grassland Science, Chengdu 611333, China

Received date: 2015-12-29

Online published: 2016-06-27

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Abstract

The aim of this study was to investigate the effects of diets containing different levels of pummelo leaves on physiological function of growing rabbits, and to evaluate the feasibility of pummelo leaves used as rabbit feed ingredient. One hundred and twenty healthy and 35-day-old French IRA rabbits had same genetic background were used in this study. After adaptation period (7 d), these rabbits were randomly divided into four groups based on similar body weight [(1 179.25±53.74) g], ten replicates in each group and three rabbits in each replicate. Growing rabbits in four groups were fed different diets that had similar nitrogen, energy and fiber and the levels of pummelo leaves in the diets were 0 (control group), 6% (group Ⅰ), 12% (group Ⅱ) and 18% (group Ⅲ), respectively. The experimental period lasted for 28 d. The results showed as follow: 1) serum globulin content of growing rabbits in group Ⅲ was significantly higher than that in control group and group Ⅱ (P<0.05), serum globulin content in group II was significantly lower than that in groupⅠ (P<0.05), and serum albumin/globulin in group Ⅲ was significantly lower than that in groupⅡ (P<0.05), while the other serum biochemical indices did not have significant differences among four groups (P>0.05). 2) No significant differences were detected among four groups in the development indices of digestive organs of growing rabbits (P>0.05). The propionic acid ratio of caecal contents in experimental groups was significantly higher than that in control group in the later stage (P<0.05), the pH and ammoniacal nitrogen concentration of caecal contents in group Ⅲ was significantly lower than those in control group in the mid-term (P<0.05), and the pH of caecal contents in group Ⅱ was significantly higher than that in group Ⅲ in the mid-term (P<0.05), while there were no significant differences in other caecal fermentation parameters among four groups (P>0.05). 3) Serum immunoglobulin A level of growing rabbits in group Ⅲ was significantly lower than that in control group and group Ⅰ (P<0.05), and serum immunoglobulin A level in group Ⅰ was significantly higher than that in control group and group Ⅱ (P<0.05), while there were no significant differences in other immune indices among four groups (P>0.05). In conclusion, growing rabbits are fed diets containing a certain amount of pummelo leaves for 4 weeks and there are no obvious adverse effects on serum biochemical indices, digestive and immune functions of them, pummelo leaves can be used as raw material in rabbit diets.

Key words： growing rabbits; pummelo leaves; serum biochemical indices; digestive function; immune function

Cite this article

TIAN Gang , XIE Wenmei , YU Bing , CHEN Hang , CAI Jingyi , ZHANG Kai , LIU Hanzhong . Effects of Diets Containing Different Levels of Pummelo Leaves on Serum Biochemical Indices, Digestion and Immune Functions of Growing Rabbits[J]. Chinese Journal of Animal Nutrition, 2016 , 28(6) : 1789 -1795 . DOI: 10.3969/j.issn.1006-267x.2016.06.021

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