Effect of dietary supplementation of crushed soybean and flaxseed on ovarian response in postpartum crossbred dairy cows

The effect of dietary supplementation of crushed soybean and flaxseed on ovarian function in postpartum crossbred dairy cows was studied. Total 20 postpartum normally calved cows from 2nd to 4th lactation were randomly divided into two equal groups. In addition to routine feed, cows from group T1 were fed with dietary supplementation of crushed soybean @ 10% of DM requirement from the day of calving to day 50 postpartum and thereafter continuation with curshed Flaxseed @ 15% of DM requirement of animal from day 51 to day 85 postpartum respectively, whereas cows from Group T2 was considered as control and supplemented with routine feed. All the animals from both groups were synchronized on day 60 postpartum with Ovsynch protocol. The Follicular dynamic study with the help of USG was undertaken at every 24 hrs interval before the first injection of GnRH of Ovsynch protocol and during Ovsynch protocol (Day 0 to Day 9) of synchronization. It was observed that mean number of class II follicles and total number of follicles were significantly increased in T1 group as compared to T2 group, whereas the mean number of class I and class III follicles did not differ significantly in T1 and T2 groups on day 0. During the synchronization period the mean number of class I, class II, total numbers of follicles and preovulatory follicles size were significantly larger in T1 as compared to T2 groups. The present research findings concluded that the dietary supplementation of crushed soybean and flaxseed showed significant increase in class I, class II, total number of follicles and size of preovulatory follicle in crossbred cows as compare to control group.