摘要
本试验旨在研究饲粮锌水平对育成期水貂生长性能及血清生化指标的影响。选取60日龄健康雄性水貂75只,随机分为5组,每组15个重复,每个重复为1只水貂,各组分别饲喂在基础饲粮中添加0（Ⅰ组）、50（Ⅱ组）、100（Ⅲ组）、300（Ⅳ组）、600 mg/kg（Ⅴ组）锌的试验饲粮。预试期7 d,正试期60 d。结果表明：1）60、75、90、105和120日龄时各组之间体重差异不显著（P〉0.05）;76-90日龄时Ⅲ、Ⅳ和Ⅴ组平均日增重显著高于Ⅰ和Ⅱ组（P〈0.05）;106-120日龄时Ⅲ组平均日增重显著高于Ⅰ、Ⅱ和Ⅴ组（P〈0.05）。2）Ⅳ组血清白蛋白含量显著高于Ⅰ和Ⅱ组（P〈0.05）;Ⅳ组血清总蛋白和球蛋白含量显著高于Ⅰ、Ⅱ和Ⅴ组（P〈0.05）;Ⅳ组血清免疫球蛋白A含量显著高于Ⅰ、Ⅱ和Ⅲ组（P〈0.05）;Ⅳ组血清免疫球蛋白G含量显著高于Ⅴ组（P〈0.05）;各组血清免疫球蛋白M含量差异不显著（P〉0.05）。3）Ⅰ和Ⅱ组血清尿素氮含量显著高于Ⅲ、Ⅳ和Ⅴ组（P〈0.05）;Ⅲ和Ⅳ组血清丙氨酸氨基转移酶和天门冬氨酸氨基转移酶活性显著高于Ⅰ和Ⅴ组（P〈0.05）。4）Ⅲ、Ⅳ组血清碱性磷酸酶活性显著高于Ⅰ和Ⅴ组（P〈0.05）;各组血清乳酸脱氢酶活性无显著差异（P〉0.05）。5）Ⅴ组血清锌含量显著高于其他各组（P〈0.05）;Ⅴ组血清磷含量显著低于Ⅰ和Ⅱ组（P〈0.05）;各组血清钙含量无显著差异（P〉0.05）。由此可见,饲粮中添加100 mg/kg的锌能够有效提高育成期水貂的生长性能,而饲粮中添加300 mg/kg的锌血清中蛋白质相关指标含量及锌相关酶活性最高,有利于提高水貂机体免疫力。
This experiment was conducted to study the effects of dietary zinc level on growth performance and serum biochemical indices of growing minks. Seventy five 60-day-old healthy male minks were randomly divided into 5 groups with 15 replicates per group and 1 mink per replicate. Minks in the 5 groups were fed the experimental diets supplemented with 0（ group Ⅰ）,50（ group Ⅱ）,100（ group Ⅲ）,300（ group Ⅳ） and600 mg / kg（ group Ⅴ） zinc,respectively. There was a 7-day adaptation period and a 60-day experimental period. The results showed as follows： 1） there was no significant difference in body weight among all groups at60,75,90,105 and 120 days of age（ P 〉0.05）; the average daily gain in groups Ⅲ,Ⅳ and Ⅴ was significantly higher than that in groups Ⅰ and Ⅱ during 76 to 90 days of age（ P 〈0. 05）,the average daily gain in group Ⅲ was significantly higher than that in groups Ⅰ,Ⅱ and Ⅴ during 106 to 120 days of age（ P 〈0.05）.2） The serum albumin content in group Ⅳ was significantly higher than that in groups Ⅰ and Ⅱ（ P 〈0.05）,the serum total protein and globulin contents in group Ⅳ were significantly higher than those in groups Ⅰ,Ⅱand Ⅴ（ P 〈0. 05）,the serum immunoglobulin A content in group Ⅳ was significantly higher than that in groups Ⅰ,Ⅱ and Ⅲ（ P 〈0. 05）,the serum immunoglobulin G content in group Ⅳ was significantly higher than that in group Ⅴ（ P 〈0. 05）,there was no significant difference in serum immunoglobulin Mcontent among all groups（ P 〉0.05）. 3） The serum urea nitrogen content in groups Ⅰ and Ⅱ was significantly higher than that in groups Ⅲ,Ⅳ and Ⅴ（ P 〈0. 05）,the serum aspartate amino transferase and alanine aminotransferase activities in groups Ⅲ and Ⅳ were significantly higher than those in groups Ⅰ and Ⅴ（ P 〈0. 05）. 4）The serum alkaline phosphatase activity in groups Ⅲ and Ⅳ was significantly higher than that in groups Ⅰ andⅤ（ P0.05）,there was no significant difference in serum lactic acid dehydrogenase activity among all groups（ P 〉0.05）. 5） The serum zinc content in group Ⅴ was significantly higher than that in other groups（ P 〈0.05）,the serum phosphorus content in group Ⅴ was significantly lower than that in groups Ⅰ and Ⅱ（ P 〈0.05）,there was no significant difference in serum calcium content among all groups（ P 〉0. 05）. In conclusion,dietary supplemented with 100 mg / kg zinc can improve the growth performance of growing minks. Dietary supplemented with 300 mg / kg zinc can get the highist protein metabolism related indices contents and zinc related enzyme activities,and it can be propitious to improve the immunity of minks.
出处
《动物营养学报》
CAS
CSCD
北大核心
2014年第11期3341-3348,共8页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
公益性行业(农业)科研专项(200903014)
吉林省特种经济动物营养与生理研究创新团队(20121810)
关键词
锌
生长性能
育成期
水貂
血清生化指标
zinc
growth performance
growing
minks
serum biochemical indices
