Fig. 4From: Epidemiological investigation of Mycoplasma Synoviae in native chicken breeds in ChinaChanges in M. synoviae antibody levels in several clinical native breed chickens.The 3 breeds of broiler (a total of 12 flocks), including Three-Yellow-, Silky-, and Qingyuan Ma-chicken, were tracking for change of M. synoviae antibody at 4, 5, 6, 7 weeks old in the production process, respectively. Positive M. synoviae antibody was first observed in the Silky chicken flocks (at 5 weeks-old), but last in the Qingyuan Ma-chicken flocks (at 7 weeks-old). P < 0.05Back to article page