Molecular Nutrition

Effects of Cysteamine Hydrochloride on Fur Quality, Serum Biochemical and Hormone Parameters and Liver Related Gene Expression of Male Minks during Winter Fur-Growing Period

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  • 1. Institute of Special Animal and Plant Sciences, Chinese Academy of Agriculture Sciences, Jilin Provincial Key Laboratory for Molecular Biology of Special Economic Animals, Changchun 130112, China;
    2. Muyuan Food Technology Co., Ltd., Luoyang 420106, China;
    3. Shandong Yakang Detection Technology Co., Ltd., Weifang 261101, China

Received date: 2018-04-19

  Online published: 2018-11-20

Abstract

This experiment was conducted to investigate the effects of dietary cysteamine hydrochloride (CSH) on fur quality, serum biochemical and hormone parameters and liver related gene expression of male minks during winter fur-growing period. Fifty six 160-day-old male minks with similar body weight[(2.13±0.10) kg] were randomly divided into 7 groups with 8 replicates per group and 1 mink per replicate. Minks were fed the basal diets supplemented with 0 (group Ⅰ, control group) 60 (group Ⅱ), 90 (group Ⅲ), 120 (group Ⅳ), 60 (group Ⅴ), 90 (group Ⅵ) and 120 mg/kg (group Ⅶ) CSH, respectively; the supplemental way of groups Ⅱ, Ⅲ and Ⅳ was continuous supplementation, and the supplemental way of groups Ⅴ, Ⅵ and Ⅶ was interval supplementation (1 week continuous, 1 weeks interval). The pre-experimental period lasted for 7 days, and the experimental period lasted for 51 days. The results showed as follows:1) the skin length, aciculum length and villus length of minks in groups Ⅵ and Ⅶ were significantly higher than those in the control group (P<0.05 or P<0.01). 2) The serum urea nitrogen content in groups Ⅱ, Ⅲ, Ⅴ, Ⅵ and Ⅶ was significantly lower than that in the control group (P<0.05 or P<0.01), and the serum triglyceride content in groups Ⅱ, Ⅲ, Ⅴ, Ⅵ and Ⅶ was significantly lower than that in the control group (P<0.05 or P<0.01). 3) The serum growth hormone content in group Ⅵ was significantly higher than that in the control group and group Ⅳ (P<0.05), and the serum somatostatin content in groups Ⅱ, Ⅲ and Ⅵ was significantly lower than that in the control group and group Ⅳ (P<0.05), the serum growth hormone receptor content in groups Ⅱ, Ⅲ, Ⅳ, Ⅴ, Ⅵ and Ⅶ was significantly higher than that in the control group (P<0.05 or P<0.01), the serum insulin-like growth factor-Ⅰ content in groups Ⅱ, Ⅲ, Ⅴ, Ⅵ and Ⅶ was significantly higher than that in the control Ⅳ (P<0.05 or P<0.01). 4) The liver insulin-like growth factor-Ⅰ gene expression level in group Ⅵ was significantly higher than that in the control group and groups Ⅱ, Ⅳ, Ⅴ (P<0.05), the liver insulin-like growth factor-Ⅰ receptor gene expression level in group Ⅵ was significantly higher than that in groups Ⅱ, Ⅳ, Ⅴ (P<0.05), the liver growth hormone receptor gene expression level in groups Ⅱ, Ⅲ, Ⅳ, Ⅴ, Ⅵ and Ⅶ was significantly higher than that in the control group (P<0.05 or P<0.01). In conclusion, in this experimental condition, the optimal CSH supplemental level for diets of male minks during winter fur-growing period is 90 mg/kg, and the optimal supplemental way was interval supplementation.

Cite this article

SUN Weili, FAN Yanyan, ZHANG Ting, WANG Zhuo, LI Hengwei, LI Guangyu . Effects of Cysteamine Hydrochloride on Fur Quality, Serum Biochemical and Hormone Parameters and Liver Related Gene Expression of Male Minks during Winter Fur-Growing Period[J]. Chinese Journal of Animal Nutrition, 2018 , 30(11) : 4559 -4568 . DOI: 10.3969/j.issn.1006-267x.2018.11.032

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