Increased age at first-mating interacting with herd size or herd productivity decreases longevity and lifetime reproductive efficiency of sows in breeding herds

• Published in: Porcine Health Management. Vol. 6; no. 1; p. 2
• Main Authors: Koketsu, Yuzo, Iida, Ryosuke, Piñeiro, Carlos
• Format: Journal Article
• Language: English
• Published: England BioMed Central 06.02.2020; BMC
• Subjects: Age; Animal reproduction; Efficiency; Farm management; Fertility; Herd-life days, sow life days; Hogs; Lifetime performance; Productivity; Herd-life days, sow life days; Lifetime performance; Farm management

Our objectives were to characterize sow life and herd-life performance and examine two-way interactions between age at first-mating (AFM) and either herd size or herd productivity groups for the performance of sows. Data contained 146,140 sows in 143 Spanish herds. Sow life days is defined as the nu...