动物营养学报Issue(1)：288-295,8.DOI:10.3969/j.issn.1006-267x.2016.01.037
不同料水比的湿拌料对育成期银狐采食量、营养物质消化率、氮代谢及体重的影响
Effects of Different Ratios of Feed to Water of Wet Mash on Feed Intake, Nutrient Digestibility, Nitrogen Metabolism and Body Weight of Growing Silver Foxes
摘要
Abstract
This experiment was conducted to study the effects of different ratios of feed to water of wet mash on feed intake, nutrient digestibility, nitrogen metabolism and body weight of growing silver foxes.Thirty 12-week-old healthy silver foxes with the average body weight of (3.44±0.19) kg were randomly assigned into 3 groups, and each group had 10 foxes ( half male and half female) .The silver foxes in the three groups were fed experimental diets with wet mash of ratios of feed to water of 1.0∶2.5 ( group Ⅰ) , 1.0∶3.5 ( group Ⅱ) and 1.0∶4.5 (group Ⅲ), respectively.The experiment lasted for 48 days.The results showed as follows:1) with the water ratio in wet mash increasing, the dry matter average daily feed intakes at different weeks old were increased by different degrees.Among them, the dry matter average daily feed intakes at 14, 15, 17, 18 and 19 weeks old in group Ⅲ were extremely significantly higher than those in groups Ⅰ and Ⅱ (P<0.01), and the dry matter average daily feed intake at 16 weeks old in group Ⅲ was significantly higher than that in group Ⅰ( P<0.05) .The dry matter total feed intake in groupⅢwas extremely significantly higher than that in groupsⅠ and Ⅱ( P<0.01) , and the dry matter total feed intake in groupⅡwas higher than that in groupⅠ, but the difference was not significant ( P>0.05) .2) The dry matter digestibility in group Ⅰ was significantly higher than that in group Ⅲ( P<0.05 ) .The protein digestibility in group Ⅰ was 4.62%higher than that in group Ⅱ, and that in group Ⅱ was 5.42%higher than that in group Ⅲ, but the differences were not signifi-cant ( P>0.05) .Compared with the group Ⅲ, the fat digestibility in group Ⅰ was 4.03%higher and that in groupⅡwas 4.46%higher, but the differences were not significant ( P>0.05) .3) Nitrogen intake in groupⅢwas extremely significantly higher than that in groups Ⅰand Ⅱ ( P<0.01) , and that in group Ⅱ was higher than that in group Ⅰ, but the difference was not significant (P>0.05).With the water ratio in wet mash in-creasing, the amount of urine was extremely significantly or significantly increased ( P<0.05 or P<0.01) .The fecal nitrogen output in groupⅢwas significantly higher than that in groupsⅠandⅡ( P<0.05) , and that in groupⅡwas higher than that in groupⅠ, but the difference was not significant ( P>0.05) .The urine nitrogen output, nitrogen retention and net protein utilization were not significantly different among all groups ( P>0.05) , but the urine nitrogen output had an increasing trend and the net protein utilization had a decreasing trend with the water ratio in wet mash increasing.The biological value of protein in groupⅠwas significantly higher than that in groupsⅡandⅢ( P<0.05) .4) The average body weight of different weeks old, the aver-age daily gain of each stage and the total weight gain were not significantly different among all groups ( P>0.05).The feed to gain in groupsⅡwas 4.30%lower than that in groupⅢ, and that in groupⅠwas 1.21%lower than that in groupⅡ, but there were no significant differences among all groups( P>0.05) .Considering all indices, the appropriate ratios of feed to water of wet mash is 1.0∶2.5, for growing silver foxes in terms of reducing feed expenses and environmental pollution, and maintaining body weight.关键词
银狐/湿拌料/料水比/消化代谢/体重Key words
silver foxes/wet mash/ratio of feed to water/digestibility and metabolism/body weight分类
农业科技引用本文复制引用
王卓,孙伟丽,钟伟,徐超,赵靖波,刘凤华,张婷,李光玉..不同料水比的湿拌料对育成期银狐采食量、营养物质消化率、氮代谢及体重的影响[J].动物营养学报,2016,(1):288-295,8.基金项目
吉林省科技厅自然基金（20150101112JC）；中国农业科学院创新工程经费资助 （）
