Relationship between the abdominal sagging index and the reproductive performance of the Roman goose

• Published in: Animal bioscience 2023, 36(4), , pp.584-590
• Main Authors: Chang, S. C., Lin, M. J., Lin, L. J., Peng, S. Y., Lee, Tzu Tai
• Format: Article
• Language: English
• Subjects: abdominal sagging index; Egg industry; Geese; reproductive performance; white roman goose; 축산학
• ISSN: 2765-0189; 2765-0235; 2765-0235
• DOI: 10.5713/ab.22.0230

Objective: This research aimed to explore the changes in the observed abdominal sagging index (ASI) and reproductive performance of Roman male and female geese during the breeding period.Methods: The 339 six-month-old breeding geese (109 male; 230 female) were used in this study, in which five male and five female geese were slaughtered on a monthly basis to record the ASI.Results: The short diameter of the testes of the male goose when the female goose lays eggs and in the second, third, and fourth months was significantly wider than in the fifth months (19.0, 20.8, 21.4, and 19.6 vs 12.7 and 14.0 mm/bird; p = 0.0105). On the other hand, the testicular weight of the male goose in the second and third months after the female goose lays eggs was significantly higher than that in the second and fifth months after laying (0.33% and 0.37% vs 0.11% and 0.19%; p = 0.0212). During the exploring period, the length and weight of the fallopian tube, the weight of the ovary, the number of follicles in 2 to 3 cm, the number of follicles in 3 to 4 cm, the fallopian tube weight in the carcass weight percentage, and the ovary weight in the carcass weight percentage all demonstrated a significant curve response. Further, female ASI was positively correlated with reproductive tract length (r = 0.815; p