Table 2 Estimates (standard errors) of variance components and genetic parameters for weight and weight uniformity in different environments (nucleus, \(N\), and commercial, \(C\)) obtained from multivariate and univariate DHGLM models
From: Genetic parameters for uniformity of harvest weight in Pacific white shrimp (Litopenaeus vannamei)
Multivariate | Univariate | |||
|---|---|---|---|---|
\(N\) | \(C\) | \(N\) | \(C\) | |
Weight | ||||
\(\sigma_{{u_{m} }}^{2}\) | 4.45 (0.33) | 1.60 (0.12) | 4.42 (0.33) | 1.60 (0.12) |
\(\sigma_{u}^{2}\) | 8.90 | 3.20 | 8.85 | 3.19 |
\(\sigma_{e}^{2}\) | 19.06 | 6.64 | 18.98 | 6.60 |
\(\sigma_{P}^{2}\) | 23.51 | 8.23 | 23.40 | 8.19 |
\(h^{2}\) | 0.38 | 0.39 | 0.38 | 0.39 |
Weight uniformity | ||||
\(\sigma_{{u_{m}^{*} }}^{2}\) | 0.06 (0.01) | 0.06 (0.01) | 0.06 (0.01) | 0.06 (0.01) |
\(h_{v}^{2}\) | 0.02 | 0.02 | 0.02 | 0.02 |
\(GCV_{e}\) | 0.25 (0.01) | 0.24 (0.01) | 0.25 (0.01) | 0.23 (0.02) |