Porcine Health Management

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 ± 0.10^a	9.1 ± 0.11^a	7.9 ± 0.13^ac
190-219	7,082	10.1 ± 0.03^a	9.3 ± 0.04^ac	7.9 ± 0.04^a
220-249	10,575	10.5 ± 0.03^e	9.6 ± 0.03^d	7.8 ± 0.04^ac
250-279	8,261	10.7 ± 0.09^d	9.8 ± 0.03^e	7.9 ± 0.05^ac
280-309	5,522	10.3 ± 0.03^a	9.2 ± 0.05^ac	7.7 ± 0.06^bc
310-339	2,259	10.3 ± 0.06^a	9.3 ± 0.07^ac	7.9 ± 0.08^ac
340-369	651	10.8 ± 0.11^de	9.6 ± 0.14^acde	8.1 ± 0.17^ac
370-399	347	9.3 ± 0.16^bc	8.4 ± 0.18^b	7.3 ± 0.21^ac
≥400	252	9.5 ± 0.13^bc	8.4 ± 0.18^b	7.7 ± 0.21^ac

^a,b,c,d,eBars with different letters differ significantly (P < 0.05)

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ISSN: 2055-5660

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