综合分析表明，我国西北地区目前优选饲养的白壳蛋鸡品种为罗曼、海兰W- 36。
An overall assessment result showed:Lohmann and Hy-line W-36 were leading white shell layer strains in Northwest China.
本试验选用190日龄海兰褐蛋鸡(128只)，随机分为四组。
In this test 128 Hailanhe layers aged 190 days were chosen and randomly divided into four groups.
太行鸡盲肠大肠杆菌数量低于海兰灰蛋鸡，乳酸菌和双歧杆菌高于海兰灰蛋鸡。
Taihang chicken had a lower number of Escherichia coli, but a higher number of Lactobacillus and Bifidobacterium in cecum compared with Hy-Line layers.
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