1Department of Livestock Production and Management, College of Veterinary Science and Animal Husbandry Orissa University of Agriculture and Technology, Bhubaneswar-751 003, India
2Department of Animal Nutrition, College of Veterinary Science and Animal Husbandry Orissa University of Agriculture and Technology, Bhubaneswar-751 003, India
3Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry Orissa University of Agriculture and Technology, Bhubaneswar-751 003, India
4Department of Veterinary Biochemistry, College of Veterinary Science and Animal Husbandry Orissa University of Agriculture and Technology, Bhubaneswar-751 003, India
*Corresponding author: sujitdas.vet@gmail.com
Online published on 17 February, 2017.
One hundred cows having reproductive disorders were randomly distributed in 5 treatment groups. The five treatment groups were: group I: control group, group II: group I+ area specific mineral mixture (ASMM) @ 50 g/day/animal, group III: group I+ by-pass fats supplementation @ 100 g/day/animal, group IV: group I + treatment with prostaglandins (PGF2#) and GnRH (Doublesync), Group V: Group I+ treatment with prostaglandins (PGF2#), GnRH and Estradiol benzoate (Estra-Doublesync). During survey, feed and fodder samples were collected for assessing nutrient composition. Also nutrient availability to the cows was assessed from the feeding practices followed by the farmers. Blood biochemical and mineral status of the animals were determined at 0 day and 60th day of experimental period. The conception rate of the animals was determined at the end of the experiment. The survey on nutrient availability revealed that 35–60% animals were getting lower TDN than requirement. In comparison to TDN, the percentages of animal observed to be deficient in DCP was lower (30–45%). The serum mineral status revealed no significant (P>0.05) difference between the treated groups at 0 day of experiment. Similarly, at 60 day of experiment, except phosphorus (P), no significant (P>0.05) difference was observed in serum mineral levels between the treated groups. The serum P level of group II was found to be significantly (P<0.05) higher than that of all other treated groups. No significant (P>0.05) difference was observed in serum biochemical levels between the treated groups at 0 day and 60th day of experimental period. Highest pregnancy percentage of the experimental cows was recorded in group V (60%) followed by group IV (45%). The pregnancy percentages of group I, II and III were 10, 35 and 20, respectively. From this experiment, it may be concluded that nutritional supplementation (ASMM or bypass fat) improved the conception rate of crossbred cow by 20–35% over unsupplemented cows while the hormonal protocol (either double synch or estra double synch) improved the conception rate of crossbred cows by 45–60%.
Area specific mineral mixture, Bypass fat, Crossbred cows, Hormone, Pregnancy
