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Need for veterinary treatment of bitches with more than one whelping during the period of study (n = 53)(means ± SD)
| Order of the litter among litters included in the study | Bitches needing veterinary help/total number of bitches with more than one litter | Bitches needing veterinary help (%) | Mean age of bitch at the time of whelping (years) |
| First | 9/53 | 16.9 | 3.2 (± 1.3) |
| Second | 20/53 | 37.7 | 4.3 (± 1.3) |
| Third | 3/6 | 50.0 | 5.3 (± 0.8) |
