Bovine mastitis prevalence and associated risk factors in dairy cows in Nyagatare District, Rwanda.
Sub clinical mastitis is an important disease of dairy cows and buffaloes causing huge economic losses in form of reduced milk production. In the current study, 125 animals (25 buffaloes, 30 crossbred cows, 15 Sahiwal and 55 Achai breed) apparently mastitis free, were selected for the collection of milk samples. These samples were subjected to surf test, NaOH, pH meter and Electronic detector. On the electronic detector 65.2% animals were positive for subclinical mastitis. On Surf and NaOH tests, 56.8% animals were found positive for each test. While On pH meter, 40.8% animals were positive for subclinical mastitis. In case of Sahiwal cattle, prevalence of subclinical mastitis was more in left fore quarter (P<0.05). In buffaloes, it was more prevalent in both hind quarters. In Achai and crossbred cows, no significant difference was found in quarter wise prevalence. The results of the current study indicate that electronic detector is more sensitive than surf test, NaOH and pH detector. It gives the results on spot and can also help to detect quarter wise prevalence. So the farmers can easily use this technique to screen out their dairy animals for subclinical mastitis.