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Swiss Large White sire line (PREMO
Boar of the Swiss Large White sire line (SUISAG)
Origin and development
The Swiss Large White pig has been the subject of breeding programmes since the early 1900s and was improved by various imported breeds. In 2002, the Swiss Large White breed was divided into two breeding populations – the Swiss Large White dam line and the Swiss Large White sire line. Since 2009, Swiss Large White sire line boars have been available under the trade name PREMO and sire most of the fattening pigs in Switzerland. The Swiss Large White sire line is therefore bred with a focus on weight gain, feed conversion and meat quality. In contrast to the Duroc and Pietrain breeds, the Swiss Large White sire line is the only sire line independently bred in Switzerland.
Description
White pig with erect ears.
Breeding objectives
Higher weight gain and improved feed conversion, with optimum lean meat content. Excellent meat and fat quality by international standards. Selection for E. coli resistance.

Piglets of the Swiss Large White sire line (SUISAG)
Performance traits of animals registered in the herdbook (2019)
Reproductive performance h 10.3 live-born piglets per litter h 2.4 litters per sow per year
Ultrasound on-farm testing (males) h 91.6 kg weight at end of test h 143 days of age at end of test h 653 g lifetime average daily gain Ultrasound on-farm testing (females) h 95.6 kg weight at end of test h 150 days of age at end of test h 645 g lifetime average daily gain
Station testing (females and castrated males) h 1055 g average daily gain during fattening h 2.37 kg/kg feed conversion h 59.7% lean meat content h 2.5% intramuscular fat content h 98.1 cm carcass length
References
Suisseporcs (www.suisseporcs.ch) SUISAG (www.suisag.ch)