Effects of Dietary Pantothenic Acid Level on Growth Performance, Nutrient Digestibility, Nitrogen Metabolism and Serum Biochemical Indices of Growing Minks

WANG Zhuo; LI Guangyu; LIU Keyuan; ZHANG Haihua; NAN Weixiao; ZHANG Xinyu; HAN Feifei; LIU Hanlu

doi:10.3969/j.issn.1006-267x.2020.01.054

2020 , Vol. 32 >Issue 1: 463 - 471

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.01.054

Effects of Dietary Pantothenic Acid Level on Growth Performance, Nutrient Digestibility, Nitrogen Metabolism and Serum Biochemical Indices of Growing Minks

WANG Zhuo ,
LI Guangyu ,
LIU Keyuan ,
ZHANG Haihua ,
NAN Weixiao ,
ZHANG Xinyu ,
HAN Feifei ,
LIU Hanlu

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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, Qinhuangdao 066004, China

Received date: 2019-07-09

Online published: 2020-01-19

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Abstract

The experiment was conducted to evaluate the effects of dietary pantothenic acid level on growth performance, nutrient digestibility, nitrogen metabolism and serum biochemical indices of growing minks. Ninety male short-haired black minks at the age of (80±5) days and with similar body weight of (1.16±0.06) kg were randomly divided into 6 groups with 15 replicates per group and 1 mink per replicate. Pantothenic acid was added in the form of D-calcium pantothenic acid, and the level of pantothenic acid in basic feed was 9 mg/kg. Pantothenic acid supplemental levels of 6 groups 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 experiment was 7 days for adaptation and 62 days for trial period. The results showed as follows:1) the average daily gain of groups Ⅱ, Ⅳ and Ⅴ was significantly higher than that of group Ⅰ (P<0.05), and the average daily feed intake of groups Ⅱ and Ⅳ was significantly higher than that of group Ⅰ (P<0.05). 2) The pantothenic acid intake, fecal pantothenic acid excretion and pantothenic acid retention of group Ⅵ were significantly higher than those of other groups (P<0.01); the urine pantothenic acid excretion of group Ⅵ was significantly higher than that of groups Ⅰ to Ⅴ (P<0.05 or P<0.01); the pantothenic acid utilization of groups Ⅳ and Ⅴ was significantly higher than that of group Ⅰ (P<0.05 or P<0.01). 3) No significant differences were found in dry matter digestibility, nitrogen digestibility, fat digestibility and carbohydrate digestibility among all groups (P>0.05). 4) The urine nitrogen content of groups Ⅱ, Ⅲ and Ⅵ was significantly lower than that of group Ⅰ (P<0.05), the net protein utilization of groups Ⅱ and Ⅵ was significantly higher than that of group Ⅰ (P<0.05), and the biological value of protein of groups Ⅱ and Ⅵ was significantly higher than that of group Ⅰ (P<0.01). 5) The serum albumin content of group Ⅵ was significantly higher than that of groups Ⅰ and Ⅴ (P<0.05), the serum glucose content of group Ⅰ was significantly lower than that of groups Ⅱ to Ⅵ (P<0.05 or P<0.01), the serum alkaline phosphatase activity of group Ⅵ was significantly higher than that of groups Ⅰ to Ⅴ (P<0.01), the contents of cholesterol and high density lipoprotein cholesterol in serum of group Ⅵ were significantly higher than that of groups Ⅰ, Ⅲ and Ⅴ (P<0.05 or P<0.01), and the serum low density lipoprotein cholesterol content of group Ⅵ was significantly higher than that of groups Ⅰ and Ⅲ (P<0.05). In summary, the appropriate dietary pantothenic acid level can improve the growth performance, pantothenic acid utilization, net protein utilization and biological value of protein of growing minks, and affect the serum biochemical indices. Comprehensive growth performance and breeding cost, the appropriate dietary pantothenic acid supplemental level for growing minks is 10 mg/kg, that is, the dietary pantothenic acid level is 19 mg/kg.

Key words： pantothenic acid; minks; growth performance; nutrient digestibility; serum biochemical indices

Cite this article

WANG Zhuo , LI Guangyu , LIU Keyuan , ZHANG Haihua , NAN Weixiao , ZHANG Xinyu , HAN Feifei , LIU Hanlu . Effects of Dietary Pantothenic Acid Level on Growth Performance, Nutrient Digestibility, Nitrogen Metabolism and Serum Biochemical Indices of Growing Minks[J]. Chinese Journal of Animal Nutrition, 2020 , 32(1) : 463 -471 . DOI: 10.3969/j.issn.1006-267x.2020.01.054

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