laying cage disease 笼养产蛋鸡病
laying ducks in cage 笼养蛋鸭
young laying ducks in cage 笼养育成蛋鸭
As we walked back down the hallway and into the spare bedroom, I noticed a sixth puppy had been born and was now laying all by itself over to the side of the cage.
当我们走回过道，走进客房时，我发现第六只小狗也出世了，正独自躺在笼子的边缘。
The more effective method of isolating the osteoblastic cells from calvariae of embryonic chicken was built in order to supply the further way to study the osteoporosis of cage laying hens.
建立有效的鸡胚额骨成骨细胞的培养方法，为笼养蛋鸡骨质疏松症研究提供新的试验手段。
The experiment was conducted to study the effects of cold stress and selenium levels on gonad development and relative hormone in young laying ducks (12 ~ 16 weeks) in cage.
本试验旨在研究低温和硒对育成期(12 ~ 16周龄)笼养蛋鸭性发育及相关激素的影响。
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