MOULI KRISHNA, K(MAJOR)SRINIVAS, MRAMANA, J.VPADMANABHAM, G2017-09-042017-09-042015-02http://krishikosh.egranth.ac.in/handle/1/5810030364THESESABSTRACT: The objective of the work was to find out performance of RFM affected crossbred cows managed with and without manual removal under field conditions. Broadly the programme had two components, in the first fertility of RFM affected crossbred cows under rural field situations was experimented, while in the second the data gathered through a questionnaire was analysed. In both components crossbred cows were placed in Group I, Group II and Group III duly assigning to normal control, manual separation of RFM and non-manual separation of RFM, respectively. In this study 130 and 99 in group I; 41 and 50 in group II; and 57 and 62 crossbred cows in Group III were utilized under first and second component, respectively. Cows that failed to expel fetal membranes within 12 hours after expulsion of fetus were considered RFM affected. The data for morbidity, loss of peak milk yield and reproductive parameters for either component of this study were collected and appropriately analyzed. There was a striking difference in the proportion of cows with pyrexia, dullness, mastitis and peak milk yield loss between RFM affected and controls in either first or second component. Cows in Group III performed apparently better than of Group II in either component. The mean interval for first postpartum observed estrus in first component did not differ between groups at either postpartum interval. Of course, in second component Group III differed significantly with Group I and II. There was no striking difference in the number of inseminations per conception between RFM affected and control cows under the first component of this study. While in second component interestingly it was noticed that at all periods of this study the cows in Group III required less number of inseminations compared to Group II. The conception rates between groups at either postpartum period were by and large similar in the two components of this study. Apparently the RFM groups of both components had registered more number of days open than of control at either interval of the study. The percent of RBS did not differ between groups at either postpartum period in both components of the present study. It was the lowest in Group III at either period in both components. Average cost of treatment was Rs 18.52, Rs 721.73 and Rs 102.91 per case in Group I, II and III, respectively. Based on the findings of the present study, it was felt that there was no striking difference between RFM groups. In fact, apparently RFM cows in Group III performed better than of Group II and for some parameters the performance of it was almost on par with control. It implied that the non-manual approach might not affect recovery and performance of cows.ennullThesis