| Autor: |
Wagan, Shakeel Ahmed, Memon, Akeel Ahmed, Kalwar, Qudratullah, Kaka, Asmatullah, Hassan, Mohammad Farooque, Soomro, Hidayatulah, Kadhro, Safia, Sethar, Abdullah, Jehangeer, Muhammad |
| Zdroj: |
Pakistan Journal of Zoology; Apr2023, Vol. 55 Issue 2, p843-848, 6p |
| Abstrakt: |
To investigate the influence of estrus synchronization protocols following ovsynch and ovsynch + CIDR in Thari cows during different breeding seasons. Total (n=80) Thari cows 1st to 4th parity were selected for this study. The experiment was conducted twice in a year i.e. in October to January, n=40 (Peak breeding season) and March to May, n=40 (Low breeding season). Animals were divided into three groups (A, B and C). In group A, 02ml I/M injection of GnRH (25µg lecirelin acetate) were injected on day 0 and 9th of the treatment. On 7th day 05ml I/M injection of PGF2a analogue (5mg/ml dinoprost tromethamine) was administered. The group B animals received same treatment but Controlled Internal Drug Releasing Device (CIDR) (containing 1.38mg progesterone) inserted into vagina on 0 day of the treatment and removed on 7th day of the treatment. Group C (Control group) received 02ml normal saline on 0, 7th and 9th day of the treatment. The positivity of estrus in peak and low breeding seasons was higher in Group B (88.88% and 60%) followed by Group A (73.33% and 46.66%) and Group C (14.28% and 10%). Similarly Group B animals showed higher fertility rate (66.66% and 46.66%) followed by Group A (53.33% and 26.66%) and C (00% and 00%) during peak and low breeding seasons. It was concluded that the ovsynch plus CIDR induces superior estrus incidence and fertility as matched to other treatments and control group. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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