Effects of Dietary Pantothenic Acid Supplemental Level on Performance, Serum Biochemical Indices and Hair Follicle Development of Minks during Winter Fur-Growing Period

WANG Zhuo; LIU Hanlu; LIU Keyuan; ZHANG Haihua; SHI Hongpeng; ZHANG Xinyu; CHEN Lihong; LI Guangyu

doi:10.3969/j.issn.1006-267x.2020.04.044

2020 , Vol. 32 >Issue 4: 1850 - 1858

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.04.044

Effects of Dietary Pantothenic Acid Supplemental Level on Performance, Serum Biochemical Indices and Hair Follicle Development of Minks during Winter Fur-Growing Period

WANG Zhuo ,
LIU Hanlu ,
LIU Keyuan ,
ZHANG Haihua ,
SHI Hongpeng ,
ZHANG Xinyu ,
CHEN Lihong ,
LI Guangyu

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1. State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Science, Chinese Academy of Agriculture Sciences, Changchun 130112, China;
2. Hebei Normal University of Science and Technology, Hebei Key Laboratory of Specialty Animal Germplasm Resources Innovation and Utilization, Qinhuangdao 066004, China

Received date: 2019-10-10

Online published: 2020-04-16

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Abstract

This experiment was conducted to evaluate the effects of dietary pantothenic acid supplemental level on performance, serum biochemical indices and hair follicle development of minks during winter fur-growing period. A single factor test design was adopted, sixty healthy male short haired black minks at (140±5) days of age with similar body weight of (1.94±0.19) kg were randomly divided into 6 groups with 10 replicates per group and 1 mink per replicate. The content of pantothenic acid in the basal diet was 8.91 mg/kg, and dietary pantothenic acid supplemental level of each group were 0 (group Ⅰ, control group), 10 (group Ⅱ), 20 (group Ⅲ), 30 (group Ⅳ), 40 (group Ⅴ) and 80 mg/kg (group Ⅵ), respectively. The pre-experimental period lasted for 5 days, and the experimental period lasted for 65 days. The results showed as follows:1) the fresh pelt weight of minks of group Ⅵ was significantly higher than groups Ⅰ to Ⅳ (P<0.05). 2) With the dietary pantothenic acid supplemental level increased, the serum pantothenic acid content of groups Ⅰ to Ⅴ was increased, but had no significant difference (P>0.05), and the serum pantothenic acid content of group Ⅵ was significantly higher than that of other groups (P<0.05); there was no significant difference on the liver pantothenic acid content among all groups (P>0.05). 3) The serum globulin content of group Ⅲ was significantly higher than that of groups Ⅰ, Ⅱ and Ⅴ (P<0.05), the contents of cholesterol (CHO) and high density lipoprotein cholesterol (HDL-C) in serum of group Ⅲ were significantly lower than those of groups Ⅴ and Ⅵ (P<0.05). 4) The serum melatonin content in early stage of winter fur-growing period of group Ⅱ was significantly lower than that of group Ⅰ (P<0.05), group Ⅲ was significantly higher than that of group Ⅱ (P<0.01), and groups Ⅳ, Ⅴ and Ⅵ was significantly lower than that of group Ⅲ (P<0.01). The serum melatonin content in later stage of winter fur-growing period of group Ⅲ was significantly lower than that of other groups (P<0.05). 5) The hair follicle depth of group Ⅵ was significantly higher than that of group Ⅳ (P<0.05), and significantly higher than that of group Ⅰ (P<0.01), there were no significant differences on the hair follicle density and secondary hair follicle density/primary hair follicle density among all groups (P>0.05). In conclusion, when dietary pantothenic acid supplemental level is 20 mg/kg (dietary total pantothenic acid content is 28.91 mg/kg), the pelt length of minks increases by 2.37%, the serum GLOB content is increased, and the contents of CHO and HDL-C in serum are reduced; when dietary pantothenic acid supplemental level is 80 mg/kg (dietary total pantothenic acid content is 88.91 mg/kg), the serum melatonin content of minks in early stage of winter fur-growing period is reduced, and the fresh pelt weight is increased.

Key words： pantothenic acid; minks; winter fur-growing period; performance; serum biochemical indices

Cite this article

WANG Zhuo , LIU Hanlu , LIU Keyuan , ZHANG Haihua , SHI Hongpeng , ZHANG Xinyu , CHEN Lihong , LI Guangyu . Effects of Dietary Pantothenic Acid Supplemental Level on Performance, Serum Biochemical Indices and Hair Follicle Development of Minks during Winter Fur-Growing Period[J]. Chinese Journal of Animal Nutrition, 2020 , 32(4) : 1850 -1858 . DOI: 10.3969/j.issn.1006-267x.2020.04.044

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