Effects of White Distiller's Grains on Rumen Fermentation and Plasma Biochemical Indexes of Qianbeima Goats

YUAN Xin, WU Wenxuan, WU Jiahai, TIAN Xingzhou, XIN Hailiang

doi:10.3969/j.issn.1006-267x.2017.06.042

Chinese Journal of Animal Nutrition >

2017 , Vol. 29 >Issue 6: 2188 - 2195

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.06.042

Molecular Nutrition

Effects of White Distiller's Grains on Rumen Fermentation and Plasma Biochemical Indexes of Qianbeima Goats

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1. College of Animal Science, Guizhou University, Guiyang 550025, China;
2. Institute of New Rural Development, Guizhou University, Guiyang 550025, China;
3. Institute of Pratacultural Science of Guizhou Province, Guiyang 550006, China;
4. Qiandongnan National Polytechnic, Kaili 556000, China

Received date: 2016-12-01

Online published: 2017-06-07

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Abstract

The present study was conducted to investigate the effects of white distiller's grains (from Meijiu river area in Guizhou province) on rumen fermentation and plasma biochemical indexes of Qianbeima goats. Six goats with similar age and body weight were selected as experiment animals and assigned to 3 groups with 2 replicates per group and 1 goat per replicate using 3×3 Latin square design. Goats in control group were fed a basal diet, and concentrates in diet for goats in trial group 1 and trial group 2 were replaced with 20% and 40% white distiller's grains, respectively. The trial lasted for 45 d consisted of 3 periods with 10 d of pre-trial period and 5 d trial period each. Plasma and rumen fluid samples were collected in trial period to determine pH, buffer capacity, the concentrations of ammonia nitrogen and volatile fatty acid, the activities of microcrystalline cellulose, carboxymethyl cellulose, cellobiase and xylanase in rumen fluid, and the contents of glucose, urea nitrogen, total protein, albumin, total cholesterol and creatinine in plasma. The results were showed as follows:1) there was no significant difference for pH and buffer capacity in rumen fluid in 3 groups (P>0.05); the highest NH₃-N concentration in rumen fluid was found in trial group 1, and was significantly higher than that in trial group 2 (P<0.05), however, they were all listed in the normal range. 2) The activity of xylanase in rumen fluid in trial group 1 was significantly higher than that in control group (P<0.05), and the activities of microcrystalline cellulose, carboxymethyl cellulose and cellobiase were not significantly affected (P>0.05). 3) Trial group 1 had the highest concentrations of acetate in rumen fluid, which was significantly higher than that in trial group 2 (P<0.05); the concentration of total volatile fatty acid in trial group 1 was significantly higher than that in control group and trial group 2 (P<0.05); there were no significant differences of propionate and butyrate concentration and acetate/propionate in 3 groups (P>0.05). 4) There were no significant differences of plasma biochemical indexes in 3 groups (P>0.05). The above results indicate that up to 40% replacement level of concentrate with distiller's grains does not exert negative effects on rumen fermentation and plasma biochemical indexes, and 20% replacement level is recommended in the practice.

Key words： white distiller’s grains; rumen fermentation index; plasma biochemical index; Qianbeima goat

Cite this article

YUAN Xin, WU Wenxuan, WU Jiahai, TIAN Xingzhou, XIN Hailiang . Effects of White Distiller's Grains on Rumen Fermentation and Plasma Biochemical Indexes of Qianbeima Goats[J]. Chinese Journal of Animal Nutrition, 2017 , 29(6) : 2188 -2195 . DOI: 10.3969/j.issn.1006-267x.2017.06.042

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