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Bulletin No. 22 - Summer 2005
MiscelleanousProduction
TOKACH M, DE ROUCHEY J
Reducing/managing variation in the nursery.
Three areas for dealing with variation in growth rate are discussed: artificial reduction in variation, methods to reduce variation and managing variation without reducing it. For each area, the corresponding methods are described:
- Artificial reduction in variation:
- Sorting into the nursery
- Continual cross-fostering in the farrowing house
- Methods to reduce variation:
- Split-sex housing
- Segregated parity flow
- High-health systems
- Use of opportunity barns
- Increase weaning age and reducing variation in weaning age
- Increase weight gain of the smallest pigs in the group
- Selecting sires with similar indexes
- Feeding multiple diets within a group
- Feed grade-antibiotics
- Prompt treatment of clinical bacterial diseases
- Managing variation without reducing it
- Increase growth rate in the entire group
