No abstract

No abstract

Aim:The objective of this study was to make an inventory of cases of metritis in dairy cows during the post-partum period, to verify with a detailed clinical study on its real incidence in Batna region and to study the treatment of metritis, using different treatment protocols. Materials and Methods:A total of 432 dairy cows were examined during the post partum period and forty dairy cows having metritis were selected and assigned into four groups of 10 each to be treated with different drugs. Visits were programmed to track the status of uterine involution and different parameters of fecundity and fertility of cows. Result:The injection of Cloprostenol (a synthetic analogue of PGF2α) has a significant effect particularly on shorter intervals from calving to the first mating, calving to positive fertilization and for the reduction of the number of services of inseminations. Similarly, the association "antibiotic+Flunixin /Meglumine has a positive effect on the parameters mentioned above . Conclusion:These results show that the double injection of Cloprostenol in the treatment of metritis improves the performance of fertility of animals and the dose of 3ml of PGF2α had succeeded in giving a positive effect on the different fertility parameters studied, compared to the dose of 2 ml.

It is known that livestock animal semen is very sensitive to cold shock during freezing processes, and this sensitivity directly affects post-thaw progressive motility, mitochondrial membrane potential, sperm nuclear DNA integrity and in vitro spermatological parameters such as plasma membrane and acrosome integrity, and sperm fertility. In addition, with the sudden decrease in the total antioxidant level of the semen after thawing, the sperm cells are insufficient to tolerate their damage. As a result, significant losses occur in sperm fertility. For this reason, researches on freezing the semen of farm animals include semen processing; freezing (cryopreservation/cryogenic damage) - thawing methods - sperm extenders, added antioxidants, the mechanisms of action and metabolic pathways of these antioxidants and physiological and metabolic parameters such as sperm fertility. It has been explained that low dose glycerol (trehalose added to increase the cryoprotectant effect) added to the extender in the freezing of livestock animal semen, Knockout Serum Replacement (KSR) and Rho-associated coiled-coil kinase (ROCK), which are antioxidant additives, can increase the in vitro quality parameters of frozen thawed semen.