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………..(1) CROSSING ………(2) CROSSING Retains 2/3 of inheritance Decline of hybrid vigour is much smaller compared to back crossing Variations from generations Boar may be mated to great grand daughter Hybrid vigour is retained Reduces the need for fresh pure breed parentsCorrectIncorrect
Sib Testing is the performance testing of animals that are closely related to, such as brother and sister. It is used for sex-link traits such as milk or butterfat production where the sisters of a bull are performance tested. It is also used for pig testing, where the litter mates of a boar are slaughtered to access their carcass grading.CorrectIncorrect