Effects of Ramie Substituting Different Ratios of Alfalfa on Growth Performance, Serum Biochemical Indexes and Nutrient Apparent Digestibility of Boer Goats

WEI Jintao, GUO Wanzheng, YANG Xuehai, CHEN Fang, ZHANG Naifeng, DIAO Qiyu

doi:10.3969/j.issn.1006-267x.2018.10.046

2018 , Vol. 30 >Issue 10: 4202 - 4209

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.10.046

Molecular Nutrition

Effects of Ramie Substituting Different Ratios of Alfalfa on Growth Performance, Serum Biochemical Indexes and Nutrient Apparent Digestibility of Boer Goats

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1. Key Laboratory of Feed Biotechnology of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Science, Wuhan 430064, China

Received date: 2018-03-22

Online published: 2018-10-20

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Abstract

The objective of this study was to investigate the effects of ramie substituting different ratios of alfalfa on growth performance, serum biochemical indexes and nutrient apparent digestibility of Boer goats. Seventy-five healthy Boer goat kids aged about 3 months and with a similar initial body weight of (17.51±1.79) kg were randomly assigned to 5 groups with 5 replicates and each replicate had 3 kids. Kids in control group were fed a basal diet, and those in 4 experimental groups were fed experimental diets in which 25% (trial group Ⅰ), 50% (trial group Ⅱ), 75% (trial group Ⅲ) and 100% (trial group Ⅳ) of alfalfa in the basal diet were replaced with ramie, respectively. The pretrial lasted for 15 d, and the trial lasted for 75 d. The results showed as follows:1) the contents of crude protein, ether extract, calcium, neutral detergent fiber (NDF), acid detergent fiber (ADF) and crude ash in ramie were higher than those in alfalfa (P<0.05). 2) Compared with control group, the average daily gain (ADG) of trial groups Ⅰ, Ⅱ and Ⅲ was decreased by 1.93%, 6.16% and 20.74%, respectively, and the differences were not significant (P>0.05). The ADG of trial group Ⅳ was decreased by 27.38% and 25.96% compared with control group and trial group Ⅰ, respectively, and the differences were significant (P<0.05). 3) Serum total protein (TP), albumin (ALB), globulin (GLB), ALB/GLB, creatinine (Gr) and free thyroxine (FT4) contents were not significantly different among all groups (P>0.05). But serum free triiodothyroxine (FT3) content in trial group was reduced at different degrees, and the differences were significant between trial groups Ⅰ, Ⅱ and Ⅲ and control group (P<0.05). Serum uric acid (UA) was detected in trail group Ⅳ, but it was not detected in other groups. 4) The apparent digestibility of day matter, crude protein, ether extract, total phosphorus, NDF and ADF was not significantly different among all groups (P>0.05). But the apparent digestibility of calcium in trail group Ⅳ was lowered 11.69% (P<0.05), 11.57% (P<0.05), 11.71% (P<0.05) and 7.79% (P>0.05) compared with control group, trail groups Ⅰ, Ⅱ and Ⅲ, respectively. Conversely, ramie nutrition value is higher, it can partial replace alfalfa efficient used in Boer goat diets as a high quality forage grass.

Key words： ramie; alfalfa; Boer goats; growth performance; serum biochemical indexes; nutrient apparent digestibility

Cite this article

WEI Jintao, GUO Wanzheng, YANG Xuehai, CHEN Fang, ZHANG Naifeng, DIAO Qiyu . Effects of Ramie Substituting Different Ratios of Alfalfa on Growth Performance, Serum Biochemical Indexes and Nutrient Apparent Digestibility of Boer Goats[J]. Chinese Journal of Animal Nutrition, 2018 , 30(10) : 4202 -4209 . DOI: 10.3969/j.issn.1006-267x.2018.10.046

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