MANAGEMENT OF POSTPARTUM ANOESTRUS USING HEATSYNCH PROTOCOL WITH NUTRITIONAL SUPPLEMENTATION IN CROSSBRED COWS
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Date
2017-07
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College of Veterinary Science Assam Agricultural University Khanapara, Guwahati-781022
Abstract
The present study was conducted to find out the efficacy of Heatsynch protocol with nutritional supplementation on postpartum anoestrous crossbred cows. Forty postpartum anoestrous crossbred cows were selected based on the history and rectal palpation in Kamrup district of Assam. The animals were divided into four groups (n=10) viz., A, B and C and treated with Heatsynch + mineral mixture, Heatsynch + mineral mixture + bypass fat and Heatsynch respectively and AI was done at induced oestrus. Ten postpartum anoestrous crossbred cows were kept as untreated control (group D). Blood samples were collected from cows on day 0, 7, 8 and 9 of Heatsynch protocol for estimation of serum estrogen, progesterone, cortisol, cholesterol, total protein, calcium, phosphorus and zinc profile. The use of Heatsynch + mineral mixture, Heatsynch + mineral mixture + bypass fat and Heatsynch protocol resulted in 100.00, 100.00 and 90.00 per cent oestrus induction with mean interval of 34.65 ±1.56, 32.60 ± 1.54 and 45.65 ± 1.91 hours and conception rate at induced oestrus was 50.00, 60.00 and 44.44 per cent, respectively. The mean serum progesterone concentration on day 0, 7, 8 and 9 revealed that the values on 7 day (2.75 ± 0.01, 2.69 ± 0.01, 2.81 ± 0.02 ng/ml) were significantly higher (P<0.01) than the values obtained on day 0, 8 and 9 with the lowest concentration on day 9 (0.43 ± 0.01, 0.39 ± 0.01, 0.46 ± 0.02 ng/ml) in group A, B and C, respectively. Serum oestrogen concentration was significantly higher (P<0.01) on day 9 in all the three treatment groups than the values obtained on day 0, 7 and 8 of treatment. Serum cortisol level showed non-significant (P>0.05) difference between the treatment groups, however, varied significantly from the control group. The highest cortisol level was observed on day 9 of treatment (6.81 ± 0.02, 6.78 ± 0.07 and 6.84 ±0.06 ng/ml in group A, B and C, respectively). Serum cholesterol and total protein concentrations were the highest in group B and varied significantly (P<0.01) from the other groups. Serum calcium, phosphorus and zinc concentrations revealed that the values obtained in group A and B were significantly higher (P<0.01) than that in group C and D. It could be concluded that Heatsynch with nutritional supplementation resulted in effective induction of oestrus with satisfactory conception rate in postpartum anoestrous crossbred cows.
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