ANALYSIS OF VARIANCE COMPONENT AND HERITABILITY BETWEEN PURE BREED OF DUROC, PIÉTRAIN AND LANDRACE AND THEIR CROSS-BRED COMBINATION ON SOME PRODUCTIVITY TESTING TRAITS

Nguyễn Văn Bình; Đinh Ngọc Bách

doi:10.34238/tnu-jst.4601

ANALYSIS OF VARIANCE COMPONENT AND HERITABILITY BETWEEN PURE BREED OF DUROC, PIÉTRAIN AND LANDRACE AND THEIR CROSS-BRED COMBINATION ON SOME PRODUCTIVITY TESTING TRAITS

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Received: 06/06/21 Revised: 24/06/22 Published: 24/06/22

Authors

1. Nguyen Van Binh , TNU - College of Economics and Techniques
2. Dinh Ngoc Bach, TNU - College of Economics and Techniques

Abstract

The objective of this study is to analyze genetic variance (GV), phenotypic variance (PV) and heritability (h²) between above breeds and their cross-bred on 2 traits of body weigh gain (BWG) and back fat thick layer (BFTL). The research was implemented on 1,718 individuals of 12 cross-bred combinations, and data was analysed by general matrix model. In the crosse-pair PxD: BWG trait had GV and h² were equivalent in P, D and higher than cross-bred; PV of D was higher than P and cross-bred. BFTL had highest GV in D and lowest in P, but PV highest in P and lowest in cross-bred. However, h² in cross-bred higher than P, D. In the cross-pair LD: BWG had GV and h² highest in L, lowest in cross-bred, but PV highset in D, lowest in L. BFTL had PV highest in L, lowest in D, but PV highest in D, lowest in cross-bred. However, h² in cross-bred higher than P and D. In the cross-pair PxL: BWG had GV and h² highest in L, lowest in P, but PV highest and equivalent in P and cross-bred, lowest in L. BFTL had GV and PV hoghest in P, lowest in L. However, h² of cross-bred and L was equivalent and higher P. These analysis results showed that, depending on different cross-pairs, different traits, the variance components and h² have different fluctuations.

Keywords

Genetic variance; Phenotypic variance; Traits; Body weight gain; Back fat thick layer

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DOI: https://doi.org/10.34238/tnu-jst.4601

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