1.
Proper Allowance of Calcium and Phosphorus for White Leghorn Layers
白来航型产蛋母鸡钙磷适宜供给量的探讨
2.
series of cages in which hens, etc are kept(to make them lay more eggs or grow fatter)
养鸡房（养鸡等用的成排鸡笼,可使母鸡多产蛋或育肥）
3.
Six roosters of the breed of Jiuyuan Black Fowl expected to produce blue eggshells were testcrossed with hens of the breed of Ross Brown.
用可能产蓝壳蛋的旧院公鸡交褐色罗斯母鸡。
4.
The hen hatches her young by sitting on the eggs.
母鸡伏在蛋上孵小鸡.
5.
Culling layers after 30 weeks lay can save dollars on feed
淘汰产蛋30周后的母鸡能节省饲料开支
6.
A Preliminary Study of the Effects of Yeast Cell Wall on Layer Performance and Egg Shell Quality;
产蛋鸡日粮中添加酵母细胞壁应用效果的研究
7.
Effects of the Diet Supplemented with Chromium Yeast on Production Performance of Laying Hens;
酵母铬对蛋鸡生产性能的影响及作用机制研究
8.
The Effect of Different Dyeing Polyculture Mixed Feed of Rooster and Early Experience on Feather Pecking in Laying Hens;
不同染色、公母鸡混养及早期经验对鸡产蛋期啄羽行为影响的研究
9.
Effects of Dietary Supplemental Yeast Culture on Performance and Egg Quality of Laying Hens;
酵母菌培养物对产蛋鸡的生产性能及蛋品质的影响
10.
Effects of Cysteamine and Chromium Yeast on Performance, Egg Quality and Hormone in Laying Hens;
半胱胺和酵母铬对产蛋鸡生产性能、蛋品质及内分泌激素的影响
11.
Effects of Supplemental Zn-Met on Performance and No-specific Immunity of Layer in Final Phase;
蛋氨酸锌对产蛋后期母鸡生产与非特异免疫性能的影响
12.
A hen kept for laying eggs.
下蛋鸡为生蛋而饲养的母鸡
13.
The hen hatched the eggs by sitting on them to keep them warm.
母鸡伏在鸡蛋上，用自己的体温孵蛋。
14.
Effect of Yeast Chromium on Production Performance、Lipid Metabolism and Breeding Internal Secretion of Egg-Laying Specific Hens;
酵母铬对蛋用种母鸡生产性能、脂类代谢及生殖内分泌的影响
15.
The hens are not laying well at the moment.
现在那些母鸡不爱下蛋.
16.
Can you lay eggs?@ asked the hen.
母鸡说：“你能不能下蛋呢？”
17.
the sound made by a hen after laying an egg.
母鸡下蛋后发出的声音。
18.
If the hen does not prate, she will not lay.
不叨叨的母鸡不下蛋。