Vol. 7, Issue 5 (2018)

Author(s):
Deepak Suvarn, C Singh and Md. Moin Ansari

Abstract:
A present field study in and around the rural area of Danapur situated on western proximity of Patna and only those buffaloes were selected which did not show sign of estrus for one year after parturition and were maintained in small unorganized herd. The investigation was conducted in hot summer months (viz. March to June) season. The enumerated buffaloes were examined per rectally and a total of 38 apparently healthy buffaloes were selected with normal genitalia without having palpable corpus luteum on ovaries and pathological lesion. Selected animals were subjected to deworming prior to this study with broad-spectrum anthelmintic Fenbendazole (3 gms) once. The animals were first treated with PGF2α at the dose rate of (25 mg) intramuscularly on day ‘0’. The animals, which showed signs of estrus, were discarded from the experiment. The rest of the animals were supplied with mineral mixture in their ration at the rate of 30 gms per animal per day from day ‘8’ today ‘38’. The buffaloes, which resumed cyclicity during mineral mixture treatment, were also discarded from further investigation. Finally total of 24 buffaloes were selected randomly and divided into four groups (six animals in each group) to observe the effect of Duraprogen at different dosages on resumption of cyclicity. Animals of group C (Control) were treated with normal saline (2 ml) on day 39, 43, 47 and 51 while those under Group T1, T2 and T3 were treated with Duraprogen (Progesterone, 250 mg) intramuscular on day 39. The animals of group T1 were further treated with Duraprogen (250 mg) on day 41, 43, 45, 47 and 49 (i.e. on alternate day). The animal of group T2 were further treated with Duraprogen (250 mg) on day 43, 47 and 51 (i.e. three day interval) while the animals of group T3 were further treated on day 46 (i.e. six day interval). The effect of Duraprogen had significant effect on resumption of cyclicity. The resumption of cyclicity was highly significant in group T1 in which repeated dosages of Duraprogen (250 mg) i.e. on alternate days were administered. The effect of Duraprogen on cyclicity decreases with decrease in frequency of dose i.e. on three day interval and on six day interval. On the basis of investigation, following conclusion were observed that: single dose of prostaglandin (PGF2α) at the dose rate of 25 mg intramascular had no effect on resuming estrus cyclicity in post-partum anestrus buffaloes, mineral mixture feeding at the dose rate of 30 gms per animal per day up to one month had non-significant effect on maintaining reproductive rhythm during summer season.