Clinical and therapeutical study on inactive ovaries in holstein-friesian cows by using different hormonal regimes

Abstract EN

This study was performed on 45 lactating Holstein -Friesian cows suffered from inactive ovaries for three months postpartum and diagnosed clinically by rectal palpation in the farm of college of agriculture / university of Baghdad, their ages 3-5 years during the period from 2010-2012.

These cows were divided randomly in to four groups ,1st group (12 cows) were injected with 0.021mg (5ml) Receptal® I / M, 2nd group(12cows) were given 1000 IU(5ml) eCG I / M ,3rd group (12 cows) injected with 1500 IU (5ml) HCG I / M in one dose and 4th group (9 cows) without treatment (control group).

The response rate was 91.8 %, 83.3 %, 91.6 %, and 66.6 % for the four groups respectively.

While the duration of response (from treatment to estrus appearance) was 7.43 ± 1.56, 10.66 ± 2.37, 8.44 ± 2.41and 67.63 % ± 9.87 in the 1st, 2nd ,3rd, and 4th groups respectively, but the pregnancy rate recorded 90.9 %, 80 %, 81.8 %, 83.3 %.

The statistical analysis showed that the 1st and 3rd group was recorded significant differences higher (p < 0.01) than other groups (2nd and 4th) related with responsive animal and the duration of response also, but the pregnancy rate recorded higher significance in 1st group (p < 0.01) compared with 2nd, 3rd and 4th groups.

The number of services / conception was more than 1.5-2.5 for all groups & not significant, the days open recorded higher significant (p < 0.01) in 1st.

2nd and 3rd compared with 4th group (control group).