ANSC 101 Lecture Notes - Lecture 6: Gilt-Edged Securities, Weaning, Lactation
21 Sep 2016
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Document Summary
Worldwide production is dominated by china, eu, and the u. s. a. The u. s. a imports dramatically more pigs than the rest of the world combined. The u. s. a produces over 11. 3 million tons and exports over 2. 3 million tons of pork per year. The top 4 companies have over of all sows. Sows: mature female pigs that have had a littler of pigs. Gilts: female pigs that have not yet had a litter. Weaning/ nursing: pigs removed from sow (6-25 kg( Farrow-to-finish: breed, farrow, wean, and raise pigs to market weight. Farrow: breed, farrow, wean and sell weaned pigs. Finisher: purchases weaned pigs and brings them to market weight. Genetic multiplier: farrow to finish for replacement gilts, isolated from other production systems. Gestation: 115 days (3 months, 3 weeks, and 3 days) Sows need about 7 days after weaning before rebreeding. Weaning: focus on maintaining health and transitioning to dry feed. Health challenges to gut and respiratory system are of major concern.
