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Sexual maturity and breeding maturity in merino ewe hoggets

Magyar Allatorvosok Lapja 40(10): 591-595
Sexual maturity and breeding maturity in merino ewe hoggets
The maturity of ovaries and uterus, as well as the onset of sexual function was examined by pathological and histological methods in 12 merino ewe hoggets with different ages. It was found that intensive processes of follicular maturation took place in the ovaries of 4 to 6 months old ewe hoggest that occasionally resulted even in oestral symptoms. Corpus luteus was found in none of the cases, neither in the 4 to 6 months old group nor in the examined individuals of 8 months old age-group slaughtered during the season intervals. Atretic follicles (4 to 5) indicated that the intensive growth of follicles ended by atresia instead of ovulation. Consequently, complete cycle did not develop even in 8 months old ewe hoggets. Although the state of the uterine mucosa may be connected practically with the picture observed in the ovaries, the common histological features of the follicle phase could only partially be observed. It has been pointed out on the basis of the results obtained that 7 to 8 months old merino ewe hoggets still unfit for the first service. Besides, the body mass of the animals does not influence the development and course of the oestral cycle.

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Accession: 006408782

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