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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)
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Porcine Health Management

ISSN: 2055-5660

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