Campus Units

Animal Science

Document Type

Article

Publication Version

Published Version

Publication Date

1-2021

Journal or Book Title

Animal Bioscience

Volume

34

Issue

1

First Page

20

Last Page

25

DOI

10.5713/ajas.19.0855

Abstract

Objective: The objective of the study was to investigate the possibility of utilizing an early litter size trait as an indirect selection trait for longevity and to estimate genetic parameters between sow stayability and litter size at different parities using a linear-threshold model for longevity in Thai Large White (LW) and Landrace (LR) populations.

Methods: The data included litter size at first, second, and third parities (NBA1, NBA2, and NBA3) and sow stayability from first to fourth farrowings (STAY14). The data was obtained from 10,794 LR and 9,475 LW sows. Genetic parameters were estimated using the multipletrait animal model. A linear-threshold model was used in which NBA1, NBA2, and NBA3 were continuous traits, while STAY14 was considered a binary trait.

Results: Heritabilities for litter size were low and ranged from 0.01 to 0.06 for both LR and LW breeds. Similarly, heritabilities for stayability were low for both breeds. Genetic associations between litter size and stayability ranged from 0.43 to 0.65 for LR populations and 0.12 to 0.55 for LW populations. The genetic correlation between NBA1 and STAY14 was moderate and in a favorable direction for both LR and LW breeds (0.65 and 0.55, respectively).

Conclusion: A linear-threshold model could be utilized to analyze litter size and sow stayability traits. Furthermore, selection for litter size at first parity, which was the genetic trait correlated with longevity, is possible when one attempts to improve lifetime productivity in Thai swine populations.

Comments

This article is published as Plaengkaeo, Suppasit, Monchai Duangjinda, and Kenneth J. Stalder. "Identifying early indicator traits for sow longevity using a linear-threshold model in Thai Large White and Landrace females." Asian-Australasian Journal of Animal Sciences 34 (2021): 20-25. doi: 10.5713/ajas.19.0855.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

Animal Bioscience

Language

en

File Format

application/pdf

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