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Experimental inoculation with the F-strain of Mycoplasma gallisepticum (FMG) between 8 and 18 wk of age is known to affect reproductive performance in commercial layers. Therefore, two trials were(More)
In each of two trials, 160 commercial pullets were separated into four treatments with four replicates of 10 chickens in each treatment. Forty pullets were designated as controls and received no(More)