The Fertility Outcomes of Egyptian Buffalo Cows after Ovsynch and Presynch-Ovsynch Protocols
Journal Title: Journal of Applied Veterinary Sciences - Year 2023, Vol 8, Issue 4
Abstract
The present study aimed to compare the reproductive outcomes after the blind application of the standard Ovsynch and Presynch Ovsynch protocols on Egyptian Buffaloes (Bubalus bubalis) during the breeding season. Fifty multiparous Egyptian buffalo cows of an unknown stage of the estrous cycle were randomly divided into two groups: 1) the standard Ovsynch protocol (first GnRH (G1) at d0, PGF2α at d7 , and second GnRH; G2 56 h later and 2) the pre-synch Ovsynch (G6G-Ovsynch) protocol (PGF2α  and GnRH 2 days apart 6 days before starting G1 of the standard Ovsynch). Cows were subjected to timed artificial insemination (TAI) 16 and 40 h after the G2 injection in both groups. Blood sampling and ovarian transrectal ultrasonography were performed at three time points, PGF2α, G2, and 2 days after G2. Serum progesterone (P4) (ng/mL) concentrations were significantly higher in the G6G-Ovsynch group than in the Ovsynch group at the time of PGF2α and two days after the G2 injection, but they were lower (P Ë 0.05) at the G2 injection. The Vascularity index of the corpus luteum (CL) and dominant follicle (DF) wall area (%) were higher (P Ë 0.05) in the G6G-Ovsynch group compared to the Ovsynch group. The ovulatory response indicated by the presence of CL at d7 was significantly higher in G6G-Ovsynch than in Ovsynch (73 vs. 51%, respectively). Moreover, a higher (P Ë 0.05) pregnancy rate was observed in G6G-Ovsynch than in the Ovsynch group. In conclusion, the blind application of the G6G-Ovsynch improved the ovulatory response in the early stages of the synchronization protocol and raised the pregnancy rates in Egyptian buffaloes.
Authors and Affiliations
Mahmoud Othman,Amr Elshalofy,Mostafa Abou-Ahmed,Abdel Raouf Ghallab,
Keywords
Related Articles
- EP ID EP721442
- DOI -
- Views 35
- Downloads 0
A Review on Various Antioxidants Utilized in Bovine Semen Extenders
High-quality cryopreserved bovine semen is vital for successful artificial insemination (AI) program, which is the most inexpensive and the quickest mode of genetic improvement. Cryopreservation of sperm is an effective...
Isolation and Antibiogram Profiles of Staphylococcus aureus Isolates from Cow milk and Dog samples
Staphylococcus aureus (S. aureus) is a commensal bacterium associated with serious infections in men and animals. Recently, multidrug-resistant (MDR) strains of S. aureus especially the so-called methicillin-resistant S....
Trial Of Using Germanium Biotite As Immune Stimulant To Foot And Mouth Disease Virus Vaccine In Cattle
This study was established in order to investigate the effect of feeding of germanium biotite (GB) on the immune response of vaccinated calves to FMD trivalent oil vaccine. The study was carried out on two levels: an exp...
Physiological Impacts Of Using Clove Powder As Fish Anesthetic On Young Common Carp (Cyprinus Carpio L.) Under Different Levels Of Temperatures
The anaesthetic efficacies of natural anaesthetic (clove) in forms of powder were evaluated on young common carp (Cyprinus carpio L.) with the mean weight of 60±10 g for handling and health management experiments. These...
Role Of Ultrasonography In The Diagnosis And Management Of Endophthalmitis In Cats
Endophthalmitis is one of the most devastating diagnoses in veterinary and human ophthalmology. Ocular ultrasound is an effective and non-invasive technique used for evaluating the structures of the eye and the surroundi...