Comparison of Characteristics and Differences in Early Immune Organ Development in Different Strains of Tianfu Broiler

To effectively develop and utilize high-quality Tianfu broilers, this study evaluated the morphological structural characteristics of immune organs such broilers with different strains (HS1 HS2) at developmental stages analyzed distribution mast cells by toluidine blue staining. Moreover, localization expression immunoglobulin, complement C3, C4 CD3 in were also detected. The results showed that although there was no significant difference development HS1 HS2, number lymphatic follicles capsule thickness spleen bursa Fabricius greater than those HS2. Additionally, Day 1 21 significantly higher HS2 (p<0.05); reached 9.17 on 7, which (p<0.05). serum IgA IgM levels 14 In addition, C3 content or extremely Days 1, (p<0.01, p<0.05), respectively, but lower 7 These indicated disease resistance line stronger line, lays a foundation for future disease- breeding broilers.