Home|Journals|Articles by Year Follow on Twitter

Directory for Medical Articles

Open Access

Original Article

AJVS. 2017; 54(1): 29-34

New Approach for Improvement of the First Insemination Conception rate in Ovsynch Treated Holstein Dairy Cows by Use of Estradiol Benzoate and Antioxidants

Mamdouh S. Hussein, Wael E. Bedier.

The aim of the current study was conducted to improve the first insemination conception rate in Holstein dairy cows by the use of estradiol benzoate and antioxidants in conjunction with ovsynch program. A total number of 160 cyclic dairy cows 55-67 day in milk, 4-10 years old, 2nd to 5th lactations were divided into 4 groups: G1 (n=40) treated with ovsynch program (control group). G2 (n=40) injected with 1mg estradiol benzoate i.m at the time of estrumate injection in ovsynch protocol, G3 (n=40) injected with 15ml of vitesel i.m at the time of estrumate injection in ovsynch protocol, G4 (n=40) injected with 1mg of estradiol benzoate plus 15ml vitesel i.m at the time of estrumate injection in ovsynch protocol. The expression ad intensity of estrus signs were studied using behavioral and physiological changes. The conception rate after first insemination examined using transrectal ultrasonography on the 30th day from insemination and pregnancy rate was confirmed rectally after 60 days from insemination. The obtained results showed that total cows expressed estrus in G2 (ovsynch plus estradiol benzoate) and G4 (ovsynch plus estradiol benzoate and E-selenium) had highly significantly incidence (87.5% and 95.0%) compared with the cows of G1 (ovsynch group) and G3 (ovsynch plus E-selenium) 52.5% and 60%) P < 0.0001.
The G2 and G4 had significant incidence of intense estrus signs (82.9% and 84.2%) compared with cows of G1 and G3 (57.1% and 62.5%) p = 0.040. also, it was noted that the G2 and G4 had highly significant incidence of first insemination conception (75.5% and 80%) versus (32.5% and 40%) in cows of G1 and G3 P < 0.0001. the pregnancy rate in G2 and G4 had highly significant incidence (67.5% and 80%) versus (30% and 40%) in cows of G1 and G3 P < 0.0001 as shown in table 2. Moreover, all cows showed intense estrus signs had 100% first insemination conception rate compared with 6.7% in weak estrus signs as in (table 3 and figure 1). It can be concluded that the beneficial effects of injection of estradiol benzoate and antioxidant with ovsynch program improve the reproductive efficiency through intensified signs of estrus and increase secretary activity of the tubular tract. These drugs improve the first insemination conception, pregnancy rates and enhances fertility in postpartum Holstein dairy cows.

Key words: ovsynch Estradiol benzoate antioxidants estrus intensity conception rate dairy cows

Similar Articles

Full-text options

Latest Statistics about COVID-19
• pubstat.org

Add your Article(s) to Indexes
• citeindex.org

Covid-19 Trends and Statistics
Follow ScopeMed on Twitter
Author Tools
eJPort Journal Hosting
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Database Service for Scientific Publications. Copyright ScopeMed Information Services.

ScopeMed Web Sites