STUDY REGARDING SOME REPRODUCTIVE ASPECTS OF BROODMARES FROM RĂDĂUȚI STUD FARM

Claudia Pânzaru, R.M. Radu-Rusu, I. Gîlcă, V. Maciuc, G.M. Doliș, M.G. Doliș

Abstract
   This study aimed to analyze 16 broodmares of Rădăuți stud farm, from Dahoman, El-Sbaa, Koheilan, Shagya, and Siglavy-Bagdady genealogical lines, in terms of age at first foaling and age of introducing to breeding, as well as the reproductive parameter service-period. The results indicated that the age at first foaling, for the entire studied number of broodmares, had an average value of 2186.6±164.0 days, respectively 6.0±0.4 years; the absolute values were 1755 and 4200 days, respectively 4, 8, and 11.5 years, therefore, the variability of this character was high (28.1%). By removing from the calculations the broodmare Shagya LXII-3, which recorded the first mount after the age of 8 years, the mean was reduced to 2031.8±58.2 days (5.6±0.2 years), and the coefficient of variation for this character was reduced to 10.3%. Regarding the age of introducing to reproduction, we revealed that the average value was 1714.8±104.1 days (4.7±0.3 years), and the absolute values were 1242 and 3041 days (3.4–8.3 years); the group also showed high variability for this character (24.3%). As in the case of age at first foaling, if Shagya LXII-3 broodmare was excluded from the calculation, the mean is 1626.4±56.9 days (4.5±0.2 years) and the variability is reduced to 14%. The reproductive parameter service-period recorded the highest average value in case of the sixth foaling (235±90.4 days, with limits between 12-764 days) and the lowest after the eighth foaling (77.5±38.4 days, with limits between 11-221 days). The calculations indicated a very high variability of this character (98.3% in the third foaling-139.2% in the fourth foaling) showing that if the reproduction management of the Rădăuți stud farm would suffer some changes, the final results regarding the reproductive activity of broodmares will be more favorable.