Analysis of the Reasons Why the Immune Effect of Free-Range Chickens Is Difficult to Guarantee

Chicken farmers fail to carry out immunization according to the immunization program, and the intervals and number of immunizations are somewhat arbitrary. In terms of immunization methods, for the sake of convenience, most use drinking water immunization, which makes the epidemic prevention effect unreliable.

Specialized chicken farmers should introduce chicks from large, healthy, disease-free chicken farms with scientific management to ensure quality. From production practice, Ningdu Yellow Chicken, Wanzai Kangle Chicken, Yugan Black-bone Chicken, Zhejiang Xianju Chicken and others are all excellent varieties of free-range chickens.