Species | Breeding goals | Possible negative side effects of selection | |||
Reproduction | Health | Metabolism | |||
Pig | High growth rate and/or minimum back fat thickness | Prolonged interval from weaning to farrowing Delayed onset of puberty Shorter pro-oestrus More frequent vulvar symptoms | More leg weakness |
| |
Dairy cattle | High milk yield | Breeding later Longer calving interval Higher number of inseminations per conception | More digestive disorders More skin or skeletal disorders More udder edema Higher risk of mastitis | Lower energy balance Loss of body condition score |