摘要
按同窝、同性别且体质量相近(P<0.05)选取150只9周龄健康乌苏里幼貉,随机分到5个试验组内,每组30只(15♂+15♀),分别饲喂膨化大豆替代鱼粉水平为0、25%、50%、75%和100%的日粮,保持各组饲料中蛋白质水平相同,经过3d预试期。试验结果表明:在育成前期,无鱼粉组乌苏里貉(Nyctereutes procyonoildesussuriensi)生长速度延缓,体质量增加高峰比对照组延迟近半个月,膨化大豆替代鱼粉水平为25%组平均日体质量增加最高,较对照组差异显著(P<0.05),且25%组的体质量增加成本分别比对照组和无鱼粉组低15.26%和9.14%;冬毛生长期各组体质量曲线起伏不大,打皮前各组乌苏里貉体质量增加都为负增长,各试验组较对照组平均日体质量增加均无显著差异(P>0.05)。无鱼粉的组料质量比和体质量增加成本最高,比对照组高出20.48%。这表明,膨化大豆可部分替代鱼粉而不影响乌苏里貉的生长和发育,但全部替代则会限制乌苏里貉的生长和发育。
An experiment was conducted to study the effects of extruded soybeans,as a substitute for fish meal in diets,on body weight of Chinese raccoon dogs in growing period.One hundred and fifty 9-week-old Chinese raccoon dogs were randomly assigned to five experimental groups with 30 individuals in each.Each group included 15 males and 15 females with close body weight（P〈0.05）from the same cage.The groups received diets containing extruded soybeans in different proportions of 0（control）,25%,50%,75% and 100%,respectively,with the same level of protein in the diets.The probation trial lasted for 3 days.Results showed that,in the early growing period,Chinese raccoon dogs from the group without fish meal（100% of extruded soybeans）developed slowly,and its peak value of body weight gain delayed half a month compared with the control group without extruded soybean.The average daily weight gain of the group received diet with 25% of extruded soybeans was significantly higher than that of the control group（P〈0.05）.The feed cost per kilogram of weight gain for the group with 25% of extruded soybeans was 15.26% and 9.14% lower than those of the control and the group without fish meal.During the furring period,body weight of each group changed little.The body weight gain of Chinese raccoon dogs in each group decreased before molting,and there was no significant difference in average daily weight gain between each experimental group and the control group（P〉0.05）.The group without fish meal showed the lowest ratio of daily feed intake to daily body weight and the highest feed cost per kilogram of weight gain,and 20.48% higher than the feed cost of the control group.It is obvious that extruded soybean as a partial substitute for fish meal in the diets could not make effect on the growth and development of Chinese raccoon dogs,but extruded soybean as a complete substitute for fish meal shows an inhibition effect.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2010年第2期73-75,90,共4页
Journal of Northeast Forestry University
基金
美国大豆协会基金项目(M06GX13508)
关键词
乌苏里貉
膨化大豆
鱼粉
Chinese raccoon dogs
Soybeans
Fish meal
