Performance of Pullets Debeaked at Various Times During the Laying Year

Poultry Science - Tập 39 - Trang 1546-1550 - 1960
D.J. Bray1, S.F. Ridlen1, J.A. Gesell1
1Department of Animal Science, University of Illinois, Urbana, Illinois

Tài liệu tham khảo

Guhl, 1956, Peck-orders established in spite of debeaking, Am. Poultry J., 87, 4 Hale, 1948, Observations on the social behavior of hens following debeaking, Poultry Sci., 27, 591, 10.3382/ps.0270591 Morgan, 1957, Effect of day-old debeaking on the performance of pullets, Poultry Sci., 36, 208, 10.3382/ps.0360208