Ogura S, Yamazaki H, Kure K, Yamane I. Productivity analysis of 70 farrow-to-finish swine farms in Japan from 2013 to 2018.
J Vet Med Sci 2022;
84:824-830. [PMID:
35473798 PMCID:
PMC9246692 DOI:
10.1292/jvms.21-0575]
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Abstract
Improving productivity is an urgent issue in the swine industry if it is to compete
internationally. However, lack of data about recent productivity transition obstructs
stakeholder planning. This study investigated the yearly productivity trends among
farrow-to-finish swine farms in Japan using annual productivity data from 2013–2018
obtained for 70 farms in Japan. The productivity parameters analyzed were pigs born alive
per litter (PBA), preweaning mortality (PRWM), pigs weaned per litter (PWL), litters per
mated female per year (LMFY), pigs weaned per mated female per year (PWMFY), post-weaning
mortality (POWM) and marketed pigs per mated female per year (MP). Data were classified
into three groups based on the size of the average female inventory and compared among
groups. Results presented the mean PBA increased continuously over the 6-year period
(P<0.001), and the PWL, PWMFY, and MP means began increasing after
2015 (P<0.001). These upward trends were particularly remarkable on
large farms. The mean PRWM increased sharply in 2014, thus inhibiting the increases in
PWL, PWMFY, and MP for the same year. The LMFY and POWM means did not change during the
study period. Altogether, productivity in Japan improved markedly during the study period,
indicating highly prolific sows were well utilized with suitable breeding techniques among
farmers these days. Continued genetic improvement and sow management would aid further
development in Japan.
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