Table 7.
Costs of embryonic lethalitya and savings from genotyping ($30/test) when selecting to avoid heterozygous parents (strategy 1) for three scenariosb
| Level of genotyping | % Herd genotyping | Dollars saved with reduction in occurrence of homozygous individuals (aa) | |||||
|---|---|---|---|---|---|---|---|
| Before genotyping costs | After genotyping costs | ||||||
| Ab | B | C | A | B | C | ||
| Base | 0 | $(140.00) | $(2490.43) | $(3043.75) | $ ( 140.00 ) | $(2490.43) | $(3043.75) |
| Low | 10 | $0.00 | $669.18 | $560.00 | $(440.00) | $369.18 | $260.00 |
| 20 | $0.00 | $1004.18 | $1831.30 | $(740.00) | $404.18 | $1231.25 | |
| 30 | $0.00 | $1273.56 | $1833.80 | $(1040.00) | $373.56 | $933.75 | |
| Intermediate | 40 | $0.00 | $1448.56 | $2083.80 | $(1340.00) | $248.56 | $883.75 |
| 50 | $0.00 | $1480.43 | $2093.80 | $(1640.00) | $(19.57) | $593.75 | |
| 60 | $0.00 | $1575.43 | $2093.80 | $(1940.00) | $(224.57) | $293.75 | |
| High | 70 | $70.00 | $1677.93 | $2093.80 | $(2030.00) | $(422.07) | $(6.25) |
| 80 | $70.00 | $1688.56 | $2173.80 | $(2330.00) | $(711.45) | $(226.25) | |
| 90 | $70.00 | $1755.43 | $2173.80 | $(2630.00) | $(944.57) | $(526.25) | |
| 100 | $70.00 | $1767.93 | $2193.80 | $(2930.00) | $(1232.07) | $(806.25) | |
In italic characters = percentage of herd genotyped that maximized net profit for that scenario
aPer 100 matings
bScenario A (7 loci with high-frequency LOF alleles), scenario B (76 loci with low-frequency LOF alleles), and scenario C (50 with high- and low-frequency loci)
(), numbers in parentheses indicate negative values