Table 2.
Results of statistical comparison between purebred and mixed bred dogs
| Dogs | N | Cells | Micronuclei N (Mean ± S.D.) |
Nuclear buds N (Mean ± S.D.) |
Picnotic nuclei N (Mean ± S.D.) |
Condensed chromatin N (Mean ± S.D.) |
Indentation N (Mean ± S.D.) |
Broken eggs N ((Mean ± S.D.) |
Total aberrations N (Mean ± S.D.) |
Binucleated cells N (Mean ± S.D.) |
|---|---|---|---|---|---|---|---|---|---|---|
| Pure-bred | 77 | 77,000 | 173 (2.247 ± 1.359)a | 156 (2.026 ± 1.597)a | 144 (1.870 ± 2.975)b | 74 (0.961 ± 2.314)a | 51 (0.662 ± 1.401)b | 29 (0.377 ± 0.844)c | 627 (8.143 ± 5.460)a | 84 (1.091 ± 1.687) |
| Golder retriever | 7 | 7000 | 13 (1.857 ± 0.690) | 20 (2.857 ± 1.676) | 7 (1.000 ± 1.000) | 1 (0.143 ± 0.378) | 3 (0.429 ± 0.787) | 0 (0.000 ± 0.000) | 44 (6.286 ± 2.215) | 10 (1.429 ± 2.149) |
| Jack Russel | 7 | 7000 | 16 (2.286 ± 1.113) | 13 (1.857 ± 1.952) | 1 (0.143 ± 0.378) | 22 (3.143 ± 3.671) | 6 (0.857 ± 1.069) | 7 (1.000 ± 1.528) | 65 (9.286 ± 4.271) | 14 (2.000 ± 3.215) |
| German shepherd | 7 | 7000 | 19 (2.714 ± 2.059) | 13 (1.857 ± 1.676) | 26 (3.714 ± 6.448) | 23 (3.286 ± 5.407) | 3 (0.429 ± 0.787) | 1 (0.143 ± 0.378) | 85 (12.143 ± 10.668) | 7 (1.000 ± 1.732) |
| Dachshund | 7 | 7000 | 14 (2.000 ± 0.816) | 13 (1.857 ± 0.900) | 12 (1.714 ± 1.976) | 9 (1.286 ± 2.215) | 4 (0.571 ± 0.976) | 1 (0.143 ± 0.378) | 53 (7.571 ± 2.440) | 6 (0.857 ± 1.574) |
| Poodle | 7 | 7000 | 17 (2.429 ± 1.718) | 11 (1.571 ± 0.976) | 15 (2.143 ± 1.952) | 2 (0.286 ± 0.488) | 3 (0.429 ± 0.535) | 4 (0.571 ± 0.787) | 52 (7.429 ± 4.392) | 13 (1.857 ± 2.340) |
| Labrador | 7 | 7000 | 15 (2.143 ± 0.900) | 10 (1.429 ± 1.397) | 22 (3.143 ± 3.579) | 2 (0.286 ± 0.756) | 11 (1.571 ± 3.735) | 6 (0.857 ± 1.215) | 66 (9.429 ± 6.528) | 5 (0.714 ± 0.488) |
| Chihuahua | 7 | 7000 | 14 (2.000 ± 1.155) | 17 (2.429 ± 2.573) | 17 (2.429 ± 2.370) | 6 (0.857 ± 0.900) | 6 (0.857 ± 1.864) | 4 (0.571 ± 1.134) | 64 (9.143 ± 7.798) | 6 (0.857 ± 1.215) |
| Boxer | 7 | 7000 | 15 (2.143 ± 1.676) | 12 (1.714 ± 1.113) | 20 (2.857 ± 4.259) | 4 (0.571 ± 0.976) | 4 (0.571 ± 0.787) | 0 (0.000 ± 0.000) | 55 (7.857 ± 6.793) | 5 (0.714 ± 0.951) |
| Border collies | 7 | 7000 | 15 (2.143 ± 1.676) | 18 (2.571 ± 2.370) | 12 (1.714 ± 2.628) | 3 (0.429 ± 1.134) | 4 (0.571 ± 0.787) | 2 (0.286 ± 0.488) | 54 (7.714 ± 4.348) | 3 (0.429 ± 0.787) |
| Bulldog | 7 | 7000 | 16 (2.286 ± 1.113) | 11 (1.571 ± 0.535) | 3 (0.429 ± 0.535) | 1 (0.143 ± 0.378) | 5 (0.714 ± 0.951) | 3 (0.429 ± 1.134) | 39 (5.571 ± 1.512) | 12 (1.714 ± 1.604) |
| Pomeranian | 7 | 7000 | 19 (2.714 ± 1.976) | 18 (2.571 ± 1.618) | 9 (1.286 ± 1.799) | 1 (0.143 ± 0.378) | 2 (0.286 ± 0.488) | 1 (0.143 ± 0.378) | 50 (7.143 ± 2.673) | 3 (0.429 ± 0.787) |
| Mixed-bred | 75 | 75,000 | 53 (0.707 ± 0.802) | 74 (0.987 ± 1.214) | 49 (0.653 ± 1.121) | 23 (0.307 ± 0.592) | 13 (0.173 ± 0.381) | 6 (0.080 ± 0.273) | 218 (2.907 ± 1.890) | 100 (1.333 ± 2.069) |
N number of analysed subjects, SD standard deviation
aP < 0.001
bP = 0 < 0.01
cP < 0.05, with respect to mixed-bred group (Mann–Whitney test)