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Table 5 Litter production at different first mating days of 35,847 gilts

From: Utilization and reproductive performance of gilts in large-scale pig farming system with different production levels in China: a descriptive study

Age at first mating days Number of gilts Litter production
Total number of piglets born Number of piglets born alive Number of weaned piglets
Mean ± SEM Mean ± SEM Mean ± SEM
160-189 898 9.9 ± 0.10a 9.1 ± 0.11a 7.9 ± 0.13ac
190-219 7,082 10.1 ± 0.03a 9.3 ± 0.04ac 7.9 ± 0.04a
220-249 10,575 10.5 ± 0.03e 9.6 ± 0.03d 7.8 ± 0.04ac
250-279 8,261 10.7 ± 0.09d 9.8 ± 0.03e 7.9 ± 0.05ac
280-309 5,522 10.3 ± 0.03a 9.2 ± 0.05ac 7.7 ± 0.06bc
310-339 2,259 10.3 ± 0.06a 9.3 ± 0.07ac 7.9 ± 0.08ac
340-369 651 10.8 ± 0.11de 9.6 ± 0.14acde 8.1 ± 0.17ac
370-399 347 9.3 ± 0.16bc 8.4 ± 0.18b 7.3 ± 0.21ac
≥400 252 9.5 ± 0.13bc 8.4 ± 0.18b 7.7 ± 0.21ac
  1. a,b,c,d,eBars with different letters differ significantly (P < 0.05)