摘要
蛋鸡的能量和蛋白质食入量与舍温呈强负相关,舍温25℃时,每升高1℃,代谢能(ME)食入量减少4.94千卡/日、只,蛋白质减少0.40克/日、只,产蛋性能下降。高温下(30℃以上)高能量日粮对鸡体有害,提高日粮蛋白质含量可消除或缓解高温的不良影响。因此,高温季节每日每鸡的ME食入量不应超过260千卡,粗蛋白质不低于20。
The highly significant negative correlation was found between ME and CP intake of hens and ambient temperature. ME and CP intake reduced 4.94 Kcal/day bird and 0.40g/day bird respectively for each degree centigrade raised above 25℃. High energy diet was harmful to hens at the temperature over 30℃, however, increase ot dietary protein could counteract or alleviate the negative effect of high temperature. For this reason the ME intake should not exceed 260 Kcal/day bird and the CP intake should be no less than 20g/day. bird in the season of high temperature.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
1989年第3期204-208,共5页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
基金
国家自然科学基金
关键词
蛋鸡
代谢能
粗蛋白
温度
Laying hen, ME, CP, Ambient temperature
