In this programme on the control of mastitis, dairy farmers were advised on correct milking procedure and good hygiene a t milking time. All milking cows were individually tested by means of the California Mastitis Test (CMT) and the animals were arranged in the correct milking order. All the sub-clinical and clinical cases of mastitis were treated during the first two rounds of testing. All clinical cases were treated throughout the programme. A teat dip was used. All milking cows going dry,

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... re infused with a Dry Cow antibiotic infusion. The Status of mastitis in ten small daiiies supplying milk to National Milk Board, Narahenpita selected at random, was 30.7% cows positive and 14.1% quarters positive. The control programme was carried out for a period of one and half years period reducing the status t o 13.Wo cows positive and 5.2% quarters positive. By the end of the programme. the status of mastitis was reduced by 57.3% in cows and 63.1% in quarters from the original status at the beginning of the programme. The cost of the programme for a Farm Unit for a year was reasonable and the estimated benefit was over double the cost of the programme, for a year. Therefore the programme is recommended.