Abstract
Tertiary Follicular Growth Wave Dynamics after Oestrus Synchronization and Superovulation in Sheep and Goats
Highlights
Oestrus synchronisation in ewes was carried out by cloprostenol induction of the new follicular wave. These results suggest that luteolysis has a key role both in the process of recruitment and in the induction of selection during folliculogenesis in ewes
Experiment 2 In the second experiment we evaluated the ovaries of 51 ewes of the Slovak Merino breed and 15 Slovak white goats
Luteolytic treatment promotes the differentiation of the largest tertiary follicle and its stimulatory effects culminate 48 hours after administration
Summary
V al o ck : Tertiary Follicular Growth Wave Dynamics after Oestrus Synchronization and Superovulation in Ewes and Goats. The quality and quantity of morphological and functional changes in ovarian tertiary follicles during their growth and development waves after synchronisation of oestrus and superovulation treatment is described. Within 48 and 120 h after injection of 125 μg cloprostenol simultaneous amplification of healthy non-atretic tertiary follicles as well as those recruited and selected as dominant on the ovarian surface was observed. Oestrus synchronisation in ewes was carried out by cloprostenol induction of the new follicular wave These results suggest that luteolysis has a key role both in the process of recruitment and in the induction of selection during folliculogenesis in ewes. Evaluation of the superovulatory response in ewes and goats demonstrates that FSH- and PMSG-based preparations affect follicles after recruitment in the process of selection.
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