We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
吉富罗非鱼抗病品系F<sub>5</sub> 代抗病性能和生长性能的评估.
- Authors
沈夏霜; 敖秋桅; 甘 西; 谭 芸; 罗永巨; 梁军能; 朱佳杰
- Abstract
To assess the effects of selective breeding in GIFT tilapia (Oreochromis niloticus), we measured the disease resistance and growth performance of 42 families of GIFT tilapia F5 generation, taking F0 generation and hybrid tilapia (Oreochromis aureus×O.niloticus) as control groups. The results show that the survival rates of 36 families of F5 generation were higher than that of F0 generation, and the survival rates of 22 families were higher than that of hybrid tilapia after Streptococcus agalactiae infection. The disease-resistant breeding value was – 0.158 – 0.086 among different families. The absolute growth rates of 27 families were higher than that of F0 generation. The correlation coefficient between the survival rate and the body mass was negative, and the quantitative value was – 0.033. According to the comprehensive comparison among the survival rate, disease-resistant breeding value and absolute growth rate for 42 families of F5 generation, we have screened seven families (2#, 3#, 4#, 6#, 28#, 31#, 35#) which were best-performing and can be used as breeding parents of F6 generation. The results indicate that the disease resistance and growth performance of GIFT tilapia were improved significantly after five generations' selective breeding.
- Subjects
BREEDING; NATURAL immunity; NILE tilapia; STREPTOCOCCUS agalactiae; BODY mass index
- Publication
South China Fisheries Science, 2018, Vol 14, Issue 3, p83
- ISSN
2095-0780
- Publication type
Article
- DOI
10.3969/j.issn.2095 – 0780.2018.03.010