Gestation lengths of Freiberger mares with mule and horse foals
1997
Giger, R. | Meier, H.P. | Kuepfer, U. (Bern Univ. (Switzerland). Klinik fuer Nutztiere und Pferde)
In a retrospective study the gestation lengths of two groups, each consisting of 193 Freiberger mares, were compared. The mares of the first group were bred by a donkey, those of the second group by a stallion of the Freiberger breed. The average gestation length of mares with Freiberger foals was 336.5 days, and that of mares with mule foals 343.1 days. The difference between the two groups was significant (p0.001). The shortest and longest observed gestation lenghts of mares with Freiberger foals were 307 and 361 days, in mares with mule foals 315 and 369 days, respectively. Additionally, we examined if the stallion, the mare, the age of the mare, the sex of the foal, and the time of mating during the breeding season influenced the gestation length of mares with mule foals, and if the age of the mare, the sex of the foal, and the time of breeding influenced the gestation length of mares with Freiberger foals. The time of breeding and the mare had a significant (p0.05) influence on gestation length
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