programs Breeding
Considerations INBREEDING & LINEBREEDING The goal of linebreeding is to place a superior ancestor in the pedigree three or more times, three or more generations back. Keeping the average COI (for the flock or breed) below 10% is generally a good goal, but it’s also important to point out that a COI can be reduced to zero in a single generation with outbreeding. There is value in close inbreeding (sire x daughter being most common, but also son x dam, sib x sib) to identify potential risks and remove carriers of defects before stacking them in a linebred pedigree 3+ generations back (which can put a breeder or breed in a real predicament when it’s discovered that the “superior” individual has genetic baggage). EVALUATE A REGISTERED SUFFOLK’S INBREEDING COEFFICIENT digital suffolk Tools
PURE BREEDING:
Mating of rams and ewes within the same breed.
OUT BREEDING:
Mating of purebred animals that have no genetic relationship for several generations.
INBREEDING:
Mating of animals with one or more common ancestors on both the sire and dam side of the pedigree. Examples: (sire to daughter, brother to sister, son to dam, and cousins to cousins). The result of inbreeding increases the frequency of like genes which may strengthen desired traits, but may also result in decreased performance for some traits and may increase the frequency of abnormalities. LINE BREEDING: Linebreeding is a less severe form of inbreeding. Line breeding allows the genetic influence of a superior animal to appear more often in future generations. Example: superior ancestor shows up 3 or more times, 3 or more generations back. A line-bred animal can produce offspring that are very similar to the superior ancestor. Line-breeding is a useful breeding tool to develop and maintain genotypes that are valuable to a breeder.
USE THE VIRTUAL MATING TOOLIN DIGITAL SUFFOLK TO PREDICT INBREEDING COEFFICIENT
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