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Effects of Dietary Nicotinic Acid Supplemental Level on Growth Performance, Fur Quality, Blood Lipid Metabolism Indices and Serum Antioxidant Indices of Growing Rex Rabbits

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

Received date: 2014-10-11

  Online published: 2015-03-18

Abstract

This experiment was conducted to investigate the effects of dietary nicotinic acid supplemental level on growth performance, fur quality, blood lipid metabolism indices and serum antioxidant indices of growing Rex rabbits aged from 3 to 5 months. A total of 160 three-month-old Rex rabbits with average body weight of (1 860±144) g were randomly divided into 4 groups with 40 replicates per group and 1 rabbit per replicate. Rabbits in the control group were fed a basal diet, and the others in the experimental groups were fed the experimental diets supplemented with 50, 100 and 200 mg/kg nicotinic acid, respectively. The pre-test period lasted for 7 days, and the experimental period lasted for 53 days. The results showed as follows: dietary nicotinic acid supplement levels had no significant effects on average daily gain, average daily feed intake, ratio of feed to gain, fur weight, fur area and wool length (P>0.05), while it had significant effects on fur thickness (P<0.05). Dietary nicotinic acid supplement levels had no significant effects on the contents of estradiol in plasma and total protein, triglyceride, low-density lipoprotein cholesterol in serum (P>0.05), while it had significant effects on the contents of cholesterol, high-density lipoprotein cholesterol and free fatty acid in serum (P<0.01). Dietary nicotinic acid supplement levels had no significant effects on the activities of glutathione peroxidase and total superoxide dismutase and malondialdehyde content in serum (P>0.05). In conclusion, the suitable dietary nicotinic acid supplement level of Rex rabbits aged from 3 to 5 months is 100 mg/kg (dietary nicotinic acid measured content is 111.54 mg/kg).

Cite this article

LI Chunyan, ZHENG Chen, SUI Xiaoyi, ZHAO Nan, LIU Gongyan, LI Fuchang . Effects of Dietary Nicotinic Acid Supplemental Level on Growth Performance, Fur Quality, Blood Lipid Metabolism Indices and Serum Antioxidant Indices of Growing Rex Rabbits[J]. Chinese Journal of Animal Nutrition, 2015 , 27(3) : 971 -977 . DOI: 10.3969/j.issn.1006-267x.2015.03.038

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