The Influence of Litter Size, Birth Weight, and Pre-Weaning Mortality on Reproductive Performance in Pigs: A Systematic Literature Review

Joana da Costa Freitas; Yuliaty Yuliaty; Vicente Manuel Luis Guterres; Maria Joana Baptista Barbosa; Zeferino Viegas Tilman

doi:10.55927/fjst.v4i11.297

Authors

Joana da Costa Freitas Universidade Nacional Timor Lorosae
Yuliaty Yuliaty National University of Timor Lorosae
Vicente Manuel Luis Guterres National University of Timor Lorosae
Maria Joana Baptista Barbosa National University of Timor Lorosae
Zeferino Viegas Tilman National University of Timor Lorosae

DOI:

https://doi.org/10.55927/fjst.v4i11.297

Keywords:

Litter Size, Birth Weight, Pre-Weaning Mortality, Pig Reproductive Performance, Pig Breeding

Abstract

This systematic literature review evaluates how litter size, birth weight, and pre-weaning mortality affect pig reproductive performance, while identifying key genetic, managerial, and environmental determinants. The review finds that larger litters often lead to lower birth weights and higher pre-weaning mortality, though sow body size, optimal temperature control, and effective farrowing system design can enhance piglet survival. Genetic selection also plays a crucial role in improving reproductive efficiency. Overall, reproductive outcomes result from the interaction of genetics, management, and environment. Future research should explore diverse pig breeds, broader environmental conditions, and improved managerial technologies to further optimize reproductive performance.

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