Table 1.
Distribution of blood types and estimated proportion of matings at risk for neonatal isoerythrolysis or A-B mismatched transfusions in 262 DSH and DLH cats in Beijing.
Breed and sex | Number of cats | Type A n (%) |
Type B n (%) |
Type AB n (%) |
B allele frequency q* | Proportion of matings at risk† | Risk for receiving A-B mismatched transfusion (%) |
---|---|---|---|---|---|---|---|
DSH | 134 | 119 (88.8) | 15 (11.2) | 0 | 0.335 | 0.099 | 19.8 |
Males | 50 | 45 (90.0) | 5 (10.0) | 0 | 0.316 | 0.090 | 18.0 |
Females | 84 | 74 (88.1) | 10 (11.9) | 0 | 0.345 | 0.105 | 21.0 |
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DLH | 128 | 112 (87.5) | 15 (11.7) | 1 (0.8) | 0.342 | 0.103 | 20.6 |
Males | 68 | 56 (82.3) | 11 (16.2) | 1 (1.5) | 0.402 | 0.136 | 27.2 |
Females | 60 | 56 (93.3) | 4 (6.7) | 0 | 0.259 | 0.063 | 12.6 |
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Total | 262 | 231 (88.2) | 30 (11.4) | 1 (0.4) | 0.338 | 0.101 | 20.2 |
B allele frequency was calculated assuming Hardy-Weinberg equilibrium and not including the type-AB cat; q2 is the proportion of type B cats.
Proportion of matings at risk = (p2)(q2) + 2pq(q2), where q2 = proportion of type B, q = frequency of b allele, p = frequency of a allele, and p = 1 – q2.