高产仔-断奶猪群中哺乳母猪淘汰原因及因泌乳期延长导致的相关淘汰情况的特征分析

Characterization of Removal Reasons for Nurse Sows and the Associated Removal Due to Their Extended Lactation Length in Hyperprolific Farrow-Wean Herds.

作者信息

Osotsi Joab Malanda, Balogh Peter, Novotnine-Danko Gabriella

机构信息

Department of Animal Science, Institute of Animal Science, Biotechnology and Natural Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Boszormenyi Street 138, 4032 Debrecen, Hungary.

Doctoral School of Animal Science, University of Debrecen, Boszormenyi Street 138, 4032 Debrecen, Hungary.

出版信息

Animals (Basel). 2024 May 29;14(11):1607. doi: 10.3390/ani14111607.

DOI:10.3390/ani14111607

PMID:38891654

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11171024/

Abstract

This study aimed to characterize and quantify reasons for the removal of nurse sows and identify the removal associated with their extended lactation length (ELL). A total of 100,756 removed nurse sows within a period of 2016-2022 from 53 sow herds in the Midwest USA were analyzed. Reproductive failure was the most common removal reason (χ = 8748.421, < 0.001) affecting P1, P2, and P3 nurse sows. Failure to conceive and absence of estrus were the main causes of reproductive failure (χ = 352.480, < 0.001) affecting P1 and P2 nurse sows and P1 and P5 nurse sows, respectively. When P2 and P6 nurse sows had an ELL of 0-7 d, they faced a high chance (χ = 13.312, 0.021) of removal due to conception failure and failure to return to heat, respectively. When P2 and P5 nurse sows had an ELL of 8-14 d, they were highly vulnerable (χ = 59.847, < 0.001) to removal due to failure to conceive and showing heat, respectively. Finally, when ELL was at 15-21 days, P4 and P5 nurse sows were more likely (χ = 41.751, < 0.001) to be removed due to failure to express heat, whereas at the same time, P2 and P3 nurse sows experienced the same removal threat due to failing to conceive. These results could help producers manage nurse sow systems.

摘要

本研究旨在描述和量化淘汰哺乳母猪的原因，并确定与延长哺乳期（ELL）相关的淘汰因素。对2016年至2022年期间美国中西部53个母猪群中总共100756头被淘汰的哺乳母猪进行了分析。繁殖失败是影响P1、P2和P3哺乳母猪的最常见淘汰原因（χ = 8748.421，< 0.001）。未能受孕和不发情分别是影响P1和P2哺乳母猪以及P1和P5哺乳母猪繁殖失败的主要原因（χ = 352.480，< 0.001）。当P2和P6哺乳母猪的ELL为0至7天时，它们分别因受孕失败和不返情而面临较高的淘汰几率（χ = 13.312，0.021）。当P2和P5哺乳母猪的ELL为8至14天时，它们分别因未能受孕和发情而极易被淘汰（χ = 59.847，< 0.001）。最后，当ELL为15至21天时，P4和P5哺乳母猪因不发情而更有可能被淘汰（χ = 41.751，< 0.001），而与此同时，P2和P3哺乳母猪因未能受孕而面临相同的淘汰风险。这些结果有助于生产者管理哺乳母猪系统。