Treatment of Inactive Ovaries in Cows and Buffalos Heifers using a variety of Hormones

[摘要] 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 AlAbiadh 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%).

[学科分类] 土木及结构工程学