Verma, H.K.Sharma, Manoj Kumar2018-08-142018-08-142015http://krishikosh.egranth.ac.in/handle/1/5810064457Increased awareness of the dairy farmers about correct managemental practices is the most limiting factor determining the productivity and profitability of an enterprise. Effective communication between extension workers and dairy farmers is required to tackle the constraints at its initial level. The communication devices which can overcome the literacy barrier and engage multiple senses of the user, are best suited for maximum results. Audio visual aids are the best choice to achieve this target attributing to their multiple advantages. Present study entitled Designing a CD ROM for awareness about abortion in dairy animals was conducted to develop a video based instructional device for farmers. This was evaluated for knowledge gain by the dairy farmers before and after exposure to it. The multimedia elements of the developed CD-ROM were found appropriate in conveying the required message by the subject matter experts. There was 81.18 % knowledge gain about general terminology and causes while a gain of 63.44 % was recorded in knowledge of respondents about management, control and prevention measures of abortion in dairy animals. Overall, there was 71.77 % knowledge gain among the respondents about all aspects of abortion in dairy animals. The CD-ROM was assigned a final rating score of to be 3.87 out of 4 by the experts, finding it as an effective mean to deliver the message to the viewers. Therefore, the developed CD-ROM credibly performed its function of increasing the awareness of the farmers about abortion in dairy animals and will enhance their production efficiency and profitability positivelyEnglishThesis