Treatment of ovarian inactivity in post partum buffalo-cows with special reference to its economic evaluation [with 5 tables]

ABSTRACT

The objective of this study was to evaluate the effects of different trials for treatment of post partum [p.p.] ovarian inactivity in buffaloes and their economic values. 75 buffalo-cows not observed in estrus 3 months followed parturition, were used in this study. Clinical examinations and progesterone assay revealed ovarian inactivity. The animals were randomly allocated to 5 treatment groups. Group I [GI] was kept as control [injected by 5 ml saline]. Group II [GII] was injected by 0.02 mg buserelin [5 ml Receptal, GnRH analogue]. Group III [GIII] was injected by 40mg progesterone for successive 8 days and 0.02 mg buserelin at 8[th] day. Group IV [GIV] was injected by 40mg progesterone for successive 8 days and 2mg and 1mg estradiol benzoate at 1[st] and 8[th] day respectively. Group V [GV] was injected by 10 ml tonophosphane daily for 2 days and received 200 gm disodium phosphate and 250 gm mineral mixture divided into 5 days with bran mash. All buffalo-cows were observed for estrus detection three times daily [at dawn, afternoon and evening]. Animals came in estrus were naturally mated using fertile buffalo-bulls and their plasma were tested for progesterone level 8 days after mating. While animals did not came in estrus were weekly examined. Pregnancy diagnosis was done using rectal palpation 42 days after mating. The results indicated that, buffalo-cows came in estrus were 40%, 73.3%, 80%, 60% and 53.3% in GI, GII, GIII, GIV and GV respectively. GIII showed the shortest treatment-estrus interval [TEI], treatment conception interval [TCI] and days open [DO] [8.1 +/- 1.7, 20.9 +/- 4.7 and 116.4 +/- 6.1 days, respectively], followed by GIV [18.3 +/- 5.7, 31.9 +/- 5.7 and 127.7 +/- 6.1 days, respectively]. While, the longest TEI, TCI and DO [52.6 +/- 4.6, 66.5 +/- 6.2 and 161.6 +/- 6.9 days, respectively] was obtained in GI. The lowest service per conception [S/C] [1.60 +/- 0.2] was obtained in GIII while, the highest was obtained in GV [1.86 +/- 0.3]. The highest 1[st] service conception rate was obtained in GIII [60%] while, it was equal in other groups [46.7%]. Plasma progesterone assay revealed highly significant increase in progesterone levels at day 8 post service [> 1ng /ml] indicating functioning corpora lutea. The obtained net profit, profit/cost ratio, net profit/return and net profit/cost in GIII were the highest followed by that of GIV. Hormonal treatment of buffalo-cows proved useful in reducing the calving interval and to increase fertility