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- Title
Genetic trends between phenotype, breeding values and environmental effects of number of fertilized eggs in Pekin ducks.
- Authors
Liu, H. C.; Chang, W. P.; Wei, L. Y.; Chang, Y. Y.; Chen, J. Y.
- Abstract
The purpose of this study was to estimate the breeding values (FEBV) of the BLUP animal model for the number of fertile eggs (F) of Pekin duck Line 201, which been selected for 11 generations to increased fertilized eggs, and to evaluate the genetic trends between F, FEBV and environmental effects of F (FENV). The results indicated that F increased from 4.05 of G1 to 5.13 of G11, and followed with polynomial y = -0.0088x³ + 0.1494x² - 0.4975x + 4.2515 (y: F, x: generation, R2 = 0.81). The FEBV increased from -0.05 of G1 to 2.57 of G11, and followed with polynomial y = 0.0239x² - 0.0131x- 0.1055 (y: FE8 v, x: generation, R² = 0.99). The genetic effect (FEBV/F) increased from -1.33 of G 1 to 50.11% of G11. In summaty, the increase in F is small but the variation is large. The increase of FEBv is large, stable and variation is small, which is consistent with the genetic trend of using F as selection criterion.
- Subjects
DUCK populations; POULTRY breeding; POULTRY genetics; EFFECT of environment on animals; PHENOTYPES
- Publication
Journal of the Chinese Society of Animal Science, 2019, Vol 48, p161
- ISSN
0253-9187
- Publication type
Article