Treatment of inactive ovaries in cows and buffalos heifers using a variety of hormones

Abstract EN

This study was conducted on twenty nine cows heifers aged between 15-20 months and twenty two buffalos heifers aged between 20-30 months in Abu-Ghrabe and Al-Thahab Al-Abiadh villages at Baghdad suburban.

On palpation all of the animals were suffering from inactive ovaries in addition to a history of an-estrum.

Heifers of cows & buffalos were randomly divided into 4 groups and treated as follows G1 include 9 cows heifers and 7 buffalos heifers injected with 1000 I.U.(eCG) PMSG.

I.M.

(Folligon, InterVet).

G2 include 6 cows heifers and 5 buffalos heifers injected I.M.

with 0.5 mg GnRH analogue (Fertagyl, InterVet).

G3 include 7 cows heifers and 5 buffalos heifers injected I.M.

with 1000 I.U.

PMSG and re-injected with 0.5 mg GnRH after 24 hr.

G4 include 7 cows heifers & 5 buffalos heifers injected I.M.

with 1000 I.U.

PMSG and re-injected with 1500 I.U.

hCG (Corulon, InterVet) after 24 hr.

All the treated animals were left free with sires to ensure mating.Results of cows heifers responded & showed signs of estrus were 8/9 (88.8%), 4/6 (66.6%), 7/7 (100%) and 6/7 (85.7%) in G1, G2, G3 & G4 respectively.

While the durations of response were 6.56±2.16 days, 7.22±3.52 days, 5.60±2.25 days and 6.74±2.18 days in the same sequence of groups.

The number of heifers which subsequently became pregnant were G1 = 7/8 (87.5%), G2 = 2/4 (50%), G3 = 5/7 (71.4%) & G4 = 4/6 (66.6%).While the number of buffalos heifers responded to the same treatments & showed signs of estrus were 5/7 (71.2%), 2/3 (40%), 3/5 (60%) & 3/5 (60%) in G1, G2, G3 and G4 respectively.

The duration of response were 6.14±2.06 days, 7.17±2.55 days, 5.93.±2.12 days and 5.95±2.02 days in the same sequence of groups.

The number of the buffalos heifers which subsequently became pregnant were G1= 3/5 (60%), G2 = ½ (50%), G3 =3/3 (100%) & G4 = 2/3 (66.6%).