The present investigation was to evaluate the genetic variation in semen characters in relation to fertility from 71 bulls used for Artificial Insemination (AI) programme. The bulls were classified as bull factors viz. breed, age, body weight, body condition, scrotal circumference and libido. Environmental and managemental factors were considered as season, ambient temperature and relative humidity during semen collection and AI stations. Friesian breed (100%) showed better phenotypic characteristics and 8-10 yrs of age groups gave superior performances. The largest volume obtained in...

The present investigation explored the important production and fertility parameters of cows in the private "mini-dairy farms" recently established in the district of Natore, Bangladesh. In total, 313 cows were studied for fertility-related parameters viz.interval between calving, onset of postpartum oestrus, open days, days wasted and service/ conception with regard to the ventilation and floor pattern of animals sheds, breed, body weight, age, parity, health condition, feeding and reproductive disorders. Proper ventilation, Concrete floor, Holstein-Friesian and Jersey crossbred, Middle...

The aim of the study was to evaluate the growth stimulating drugs (GSD) on growth performance, haematology, feed conversion ratio (FCR), dressing % and meat quality of cattle. The GSD had significant effect on daily body weight gain of cattle. The daily average live weight gain by vitamin, Tonic powder, steroids, tonic drugs-parenteral, iodine+UMS and no drugs were 566, 775, 541, 525, 675 and 683 gm/day, respectively. Total erythrocyte count in all treated groups increased significantly. After treatment the Haemoglobin % increases significantly. FCR was lowest (4.90) in tonic powder-oral and...