The following adjustment factors come from work done originally at Texas A&M - San Angelo combined with work on adjustment factors for sheep. Specifically they were obtained from the Boer Goat Improvement Network, B-GIN Fact Sheet, 2004 EPD Report.
Multiplicative factors used to adjust birth
and weaning weights for non-genetic effects:
EFFECT | LEVEL | BIRTH WEIGHT ADJUSTMENT FACTOR |
WEANING WEIGHT ADJUSTMENT FACTOR |
Kid Sex | Buck | 0.91 | 0.90 |
Doe | 1.00 | 1.00 | |
Wether | - | 0.97 | |
Type of Birth - Rearing |
1-1 | 1.00 | 1.00 |
1-2 | - | 1.14 | |
2-1 | - | 1.04 | |
2-2 | 1.13 | 1.18 | |
3-1 | - | 1.08 | |
3-2 | - | 1.23 | |
3-3 | 1.27 | 1.27 | |
Age of Dam | 1 | 1.27 | 1.10 |
2 | 1.07 | 1.09 | |
3-7 | 1.00 | 1.00 | |
8+ | 1.05 | 1.00 |
NOTES:
Actual birth weights and age-adjusted (to 90 days) weaning weights are multiplied by the factor shown to correct for non-genetic effects of kid sex, type of birth (for birth weight) or birth and rearing (for weaning weight), and age of the dam.
Type of birth - type of rearing. Birth weights were adjusted only for type of birth.
Multiplicative factors used to adjust
litter size for effects of age of dam:
AGE OF DAM | ADJUSTMENT FACTOR |
1 | 1.48 |
2 | 1.17 |
3 | 1.05 |
4 | 1.01 |
5 | 1.00 |
6 | 1.00 |
7 | 1.02 |
8 | 1.05 |
9+ | 1.13 |