Limited cold stress during pregnancy could lead to increased lamb birth weight, survivability
Research out of South Dakota State University has highlighted a potential connection between limited exposure to cold stress during pregnancy and birth weight. The work showed that shearing ewes at day 50 of gestation, rather than after 100 days, resulted in larger and heavier lambs at birth.
妊娠第50天剪毛模拟适度冷应激,使双胎、三胎羔羊出生重、体型和断奶重提高,且不增加成本;但结论来自美国羊群单点试验,极端冷应激不适用。