Effects of Different Dietary Protein and Fat Levels on Growth Performance and Serum Biochemical Parameters of Male Minks during Growing Period

ZHANG Haihua; ZHANG Tietao; LIU Xiaoying; NAN Weixiao; LI Guangyu

doi:10.3969/j.issn.1006-267x.2016.10.028

2016 , Vol. 28 >Issue 10: 3248 - 3255

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.10.028

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Effects of Different Dietary Protein and Fat Levels on Growth Performance and Serum Biochemical Parameters of Male Minks during Growing Period

ZHANG Haihua ,
ZHANG Tietao ,
LIU Xiaoying ,
NAN Weixiao ,
LI Guangyu

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State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Economic Animal and Plant Science, Chinese Academy of Agriculture Sciences, Changchun 130112, China

Received date: 2016-04-13

Online published: 2016-10-17

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Abstract

This experiment was conducted to evaluate the effects of different dietary protein and fat levels on growth performance and serum biochemical parameters of male minks during growing period. A total of 90 healthy male minks at the age of 60 days were randomly assigned into 6 groups with 15 replicates per group and 1 mink per replicate. The minks were fed 6 kinds of experimental diets with 2 protein levels (32% and 36%) and 3 fat levels (10%, 20% and 30%). The adaptation period lasted for 7 days and the formal period lasted for 60 days. The results showed as follows:the final weight and average daily gain (ADG) were significantly higher in low protein middle fat and low protein high fat groups than those in low protein low fat and high protein low fat groups (P<0.01), and the final weight and ADG were increased with dietary fat level increasing which showed 20% and 30% fat level groups significantly higher than 10% fat level group (P<0.01). Feed/gain (F/G) was the lowest in low protein high fat group, it was significantly lower than that in low protein low fat and high protein high fat groups (P<0.05). Serum urea nitrogen (UN) in low protein high fat group was significantly lower than that in other groups (P<0.01). Serum alanine transaminase (ALT) activity in 32% protein level group was significantly higher than that in 36% protein level group (P<0.05). Serum triglyceride (TG) content in low protein high fat and high protein high fat groups was significantly higher than that in low protein low fat and high protein low fat groups (P<0.05). Serum TG, total cholesterol (TCHO) and high-density lipoprotein (HDL) contents were increased with dietary fat level increase, and they were all highest in low protein high fat group. The growth performance and serum biochemical parameters of minks were not affected by the interaction between dietary protein and fat levels (P>0.05). Considering all the factors, when the dietary protein is 32% and the fat level is 20% to 30% under the condition of this experiment, the dietary protein and fat utilization rates are higher, and the male minks during growing period can get a better growth performance.

Key words： mink; protein; fat; growth performance; serum biochemical parameters

Cite this article

ZHANG Haihua , ZHANG Tietao , LIU Xiaoying , NAN Weixiao , LI Guangyu . Effects of Different Dietary Protein and Fat Levels on Growth Performance and Serum Biochemical Parameters of Male Minks during Growing Period[J]. Chinese Journal of Animal Nutrition, 2016 , 28(10) : 3248 -3255 . DOI: 10.3969/j.issn.1006-267x.2016.10.028

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