tailieunhanh - Các thông số di truyền ước tính cho tính trạng kháng bệnh gan thận mủ trên cá tra (Pangasianodon hypophthalmus)

Bài viết này trình bày về các thông số di truyền tính trạng kháng bệnh gan thận mủ được ước tính trên quần thể chọn giống thế hệ thứ 1. Tổng cộng có và cá thể tương ứng thuộc 147 và 130 gia đình được cảm nhiễm vi khuẩn Edwardsiella ictaluri gây bệnh gan thận mủ ở cá giống và nuôi đánh giá tăng trưởng trong ao. Mời các bạn cùng tham khảo! | Trường Đại học Nông Lâm TP. Hồ Chí Minh 39 Genetic parameter estimates for resistance to Enteric Septicemia of Catfish on Pangasianodon hypophthalmus Dung T. P. Tran1 3 Phuc H. Tran2 Vu T. Nguyen2 Phuong H. Vo2 Lien T. B. Huynh2 amp Sang V. Nguyen2 1 Faculty of Biology Ho Chi Minh City University of Education Ho Chi Minh City Vietnam 2 Research Institute for Aquaculture No. 2 Ho Chi Minh City Vietnam 3 Department of Biology Nong Lam University Ho Chi Minh City Vietnam ARTICLE INFO ABSTRACT Research Paper Genetic parameters were estimated for resistant traits against Enteric Septicemia of Catfish ESC on the first generation of selection on Received December 09 2020 striped catfish. In total 8 207 and 5 838 individuals from 147 and Revised February 19 2021 130 full-sib families were challenged by Edwardsiella ictaluri causing Accepted February 26 2021 ESC on fingerlings and tested growth in pond accordingly. Harvest body weight HW length HL and survival SURGROW from Keywords grow-out test and ESC resistant traits such as binary alive-dead survival SUR and time to dead TIME at different truncated points from Disease resistance to ESC challenged test of fingerlings were recorded. Heritability for each trait and genetic correlations among these recorded traits were estimated. Edwardsiella ictaluri High heritabilities were found for HW and HL and mostly Genetic correlation from medium to high values were estimated for SURGROW Heritability SUR - and TIME - . Genetic correlations among Striped catfish different truncated SUR and TIME traits were almost highly positive - . Genetic correlations among different truncated SUR and Corresponding author TIME traits with HW and SURGROW were low positive - . In summary selection for ESC resistance would not negatively affect Tran Thi Phuong Dung the growth in fingerling stage. Email dungttp@ Cited as Tran D. T. P. Tran P. H. Nguyen V. T. Vo P. H. Huynh L. T. B. amp