不同季节产蛋鸡营养需要研究——Ⅳ、不同季节产蛋鸡饲养标准的研究

RESEARCH ON NUTRITIVE NEED OF LAYING HENS IN DIFFERENT SEASONS IY Researcg on Feeding Standard for the Laying Hens in Different Seasons

通过一系列的饲养试验、比较屠宰试验及代谢试验,共用试验鸡1462支次,分冷、热两季,每季历时80～100天,经3年的重复试验,获得一套完整的不同季节产蛋鸡的营养需要和营养浓度数据,进行充分比较,再结合国内外有关资料,拟定了产蛋鸡冷、热季的饲养标准。标准显示,季节不同提供的饲养标准存在差异,蛋能比也有明显变化。总的趋势是饲粮中代谢能含量冷季高于热季,粗蛋白质却是热季高于冷季。

The complete data of tl:e nutritive need and nutritive concentration for the laying hens in different seasons have been obtained by a series of feeding,comparative slaughter and metabolic experiments, in which 145 hens were used, separately in the cold and warm seasons for 80 to 1.00 days; the re-experiments lasted 3 years. We recommend the feeding standard for the laying hens in the cold and warm seasons by fully comparing and referring some referance materials at home and abroad. The standard showed that the feeding standard supplied in different seasons differed, and that the ratio of egg energy was obviously-changed, and that the general trend was that the metabolic energy content of the forage was higher in the cold season than that in the warm season, but the coarse protein content was higher that in the warm season than in the cold season.