A Comparative Study on Growth and Development Rules of Hy-Line Brown Laying Hens and Jingfen No.2 Laying Hens and Their First Egg Qualities

YANG Xian, WEN Hui-ping, LIU Yan-lin, MA Li, WEI Li

Animal Husbandry and Feed Science . 2021, (2): 57 -61 . DOI: 10.12160/j.issn.1672-5190.2021.02.011