The results indicated that K + and Ca 2+ play very important role during early development of bovine embryos, and the cleavage and early development of embryos can be blocked in the absence of K + and Ca 2+ in culture system.

• 上述结果表明 ,K+ 和 Ca2 + 在和牛受精卵的卵裂及早期发育中起重要作用 ,培养系统中这两种离子的缺乏会严重影响卵裂及胚胎早期发育 ;