山羊尿素舔砖不同添加水平的效果试验

The Effect Test of Different Added Levels of Goats Urea Blocks

本试验选取21头10月龄、体重26kg左右的湘东黑山羊,随机分成3组,其中A组为对照组,饲喂基础日粮,B组和C组为试验组,分别在饲喂基础日粮的基础上,补饲尿素含量为7%和10%的尿素糖蜜舔砖,以研究尿素糖蜜舔砖对山羊增重效果的影响。结果表明:补饲尿素糖蜜舔砖后,湘东黑山羊营养状况大大改善,增重速度得到不同程度的提高。补饲舔砖的B、C试验组日增重分别为0.12kg和0.15kg,比对照组分别高50%和87.5%,试验C组比试验B组高2 5%,经方差分析差异及显著(P<0.01)。试验B、C组中每只羊比对照组分别多收入8.34元和17.13元。从而也得出10%尿素添加比7%尿素添加的舔砖补饲山羊的效果要好。

This test selects 21 10-month-old eastern Hunan black goats, each weight about 26 grams. These goats are randomly divided into three groups. Group A for the control group, are fed basal diet. Group B and Group C are the test groups, fed the urea molasses blocks whose urea content is respectively 7% and 10% besides the basal diet, to test the effect of urea molasses blocks on weight gain of goats. The results show that： feeding urea blocks, the nutritional status of eastern Hunan black goats have been greatly improved; weight gain speed in various degrees has been increased. The test groups B and C, which fed the urea blocks, average daily gain are 0.12 kg and 0. 15 kg respectively, and 50% and 87.5% higher than the control group. Group C is 2.5% higher than group B and the difference is significant （ P 〈 0.01 ） by the variance analysis. The earning of every goat in group B and C is respectively 8.34 and 17.13 yuan higher than the control group. Thus the effect of the urea block contained 10% urea is better than the one contained 7% urea.