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Results, 1976 - technical and economic management of porkers and sow management

, : Results, 1976 - technical and economic management of porkers and sow management. Bulletin, Institut Technique du Porc 9(2): 9-10

Data for 361 057 pigs from 1 697 herds taking part in the national porker management scheme were as follows (average plus or minus sigma ): duration of fattening period, 143 plus or minus 19 days; food conversion ratio, 3.64 plus or minus 0.29; av. daily gain, 569 plus or minus 54 g.Data for 376 171 litters from 5118 farms participating in the national sow herd management scheme are classified according to department; ranges were as follows: age at 1st farrowing, 344.0-442 days; age at weaning, 25.3-37.0 days; interval from weaning to conception, 15.1-26.0 days; number of live piglets/litter, 9.5-10.5; number of stillborn piglets/litter, 0.2-0.6; litter size at weaning, 8.3-9.2; number of piglets weaned per sow per yr, 17.7-20.6.


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