The Effects of F Strain Mycoplasma gallisepticum, Mycoplasma synoviae, and the Dual Infection in Commercial Layer Hens over a 44-Week Laying Cycle When Challenged before Beginning of Lay. I. Egg Production and Selected Egg Quality Parameters

Autor: Branton, S. L., Lott, B. D., May, J. D., Maslin, W. R., Boyle, C. R., Pharr, G. T.
Zdroj: Avian Diseases, 1997 Oct 01. 41(4), 832-837.
Databáze: JSTOR Journals