Effects of Dietary Different Compound Enzyme Preparation on Growth Performance, Nutrient Digestibility and Nitrogen Metabolism of Growing Minks

LIU Huitao, YANG Ying, XING Xiumei, ZHANG Tietao, WU Xuezhuang, YANG Fuhe

doi:10.3969/j.issn.1006-267x.2014.11.043

2014 , Vol. 26 >Issue 11: 3517 - 3524

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.11.043

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Effects of Dietary Different Compound Enzyme Preparation on Growth Performance, Nutrient Digestibility and Nitrogen Metabolism of Growing Minks

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1. Institute of Economic Animal and Plant Science, Chinese Academy of Agriculture Sciences, Jilin 130112, China;
2. State Key Laboratory of Special Economic Animal Molecular Biology, Jilin 130112, China;
3. Institute of Feed Research, Chinese Academy of Agriculture Sciences, Beijing 100081, China

Received date: 2014-05-04

Online published: 2014-11-17

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Abstract

This experiment was conducted to study the effects of dietary different compound enzyme preparation on growth performance, nutrient digestibility and nitrogen metabolism of growing minks. Ninety male minks at the age of (60±3) days were randomly allocated to 9 groups with 10 replicates per group and 1 mink per replicate. Minks in the control group (group A) were fed a basal diet; minks in groups B, C and D were fed basal diets supplemented with 390, 890 and 1 390 mg/kg compound enzyme preparations Ⅰ, respectively; minks in groups E, F and G were fed basal diets supplemented with 330, 830 and 1 330 mg/kg compound enzyme preparations Ⅱ, respectively; minks in groups H and I were fed basal diets supplemented with 190 and 990 mg/kg compound enzyme preparations Ⅲ, respectively. The pre-test period lasted for 13 days and the trial period lasted for 45 days. The results showed as follows: 1) the final weight and average daily gain in group C were significantly higher than those in the control group (P<0.05). There was no significant difference in average daily feed intake and ratio of feed to gain among all groups (P>0.05). 2) The digestibility of dry matter and protein in groups B, C, E and F was significantly higher than that in the control group (P<0.01). There was no significant difference in fat digestibility among all groups (P>0.05). 3) Compared with the control group, there were no significant difference in nitrogen intake and urine nitrogen in experimental groups. The nitrogen deposition in group B was significantly higher than that in the control group, groups D and H (P<0.05). The net protein utilization and biological value of protein in group B and C were significantly higher than those in the control group and group D (P<0.05), and there was no significant difference in the experimental group compared with the control group (P>0.05). It is concluded that dietary 890 mg/kg compound enzyme preparation Ⅰ (25.7% amylase, 25.6% acid protease, 20.5% arabinoxylans, 12.8% pectase, 2.6% mannanase and 12.8% phytase) has the best feeding effect in growing minks under this experiment conditions.

Key words： minks; compound enzyme preparation; growth performance; digestibility

Cite this article

LIU Huitao, YANG Ying, XING Xiumei, ZHANG Tietao, WU Xuezhuang, YANG Fuhe . Effects of Dietary Different Compound Enzyme Preparation on Growth Performance, Nutrient Digestibility and Nitrogen Metabolism of Growing Minks[J]. Chinese Journal of Animal Nutrition, 2014 , 26(11) : 3517 -3524 . DOI: 10.3969/j.issn.1006-267x.2014.11.043

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