鍾秀枝 黃祥吉 張秀鑾
THE CORRELATION BETWEEN GROWTH PERFORMANCE AND
LENGTH IN SIRE AND DAM LINES OF TLRI NATIVE CHICKEN
H. C. Chung, H. C. Huang and H. L. Chang
Taiwan Livestock Research Institute, Council of Agriculture
The objective of this investigation was to estimate the correlation between growth performance and shank length in sire (Taishu No.11) and dam lines (Taishu No.12) of TLRI native chicken and thus to increase the carcass uniformity for large-scale meat production purpose. There were 585 birds of Taishu No. 11 and No. 12 lines used in the study, which were officially nominated by provincial government in 1997. Body weights and shank lengths at 8, 12, 14 and 16 weeks of age were measured and the relationship between traits was also evaluated. Body weights (mean±SE) at 8, 12,.14 and 16 weeks of age in sire line were 650±6 gm, 1158±9 gm, 1376±10 gm and 1611±11 gm, respectively. Shank length (mean±SE) at 16 weeks of age in sire line was11.2±0.04 cm with the corresponding estimate of Pearson correlation coefficient between body weight and shank length being 0.49. Also, body weights at 8, 12,.14 and 16 weeks of age in dam line were 581±5 gm, 932±8 gm, 1079±10 gm and 1193±11 gm, respectively. Again, shank length (mean±SE) at 16 weeks of age in dam line was 9.3±0.03 cm with the corresponding estimate of Pearson correlation coefficient between body weight and shank length being 0.39. In addition, significant differences between lines were observed in both traits considered in the study.
Key Words: TLRI native chicken, Growth performance, Shank length.