荒漠草原地区冷季妊娠绵羊补饲效益研究

Studies on Supplcmcntary Fccding Benefit on Pregnant Ewes in Cold Season in Desert Steppe.

通过对妊娠绵羊冷季不同补饲方式的试验研究，揭示了在内蒙古荒漠草原地区的正常年景下，冷季对妊娠绵羊进行补饲，补饲方式以不定期的特殊情况日（如风雪天）补饲为好，在经济上较在一定时期内每日定量补饲更为有利。补饲天数为冷季５个月中的特殊情况日约４０天左右。从而得出妊娠绵羊安全越冬并保证羔羊成活的适宜储草量，为目前以全年放牧养羊业的牧区储草提供理论依据。同时，对荒漠草原地区冷季家畜饲养管理提出了新见解。

Forty pregnant ewes were used for testing supplementary feeding benefit by weighting ewes,lambs in cold season in desert steppe.The ewes were divided into four groups and given different treatment.It was showed that 40 special days' supplementary feed-ing was as efficient as 150 days 'daily feeding with supplementary feeds of any given quota.It was obvious that in desert steppe the best way for sheep raising was yearlong grazing with supplementary feeding in special days.