RÉSUMÉ
Between April 1985 and August 1986, 89 Jamaican dairy herds with 10 or more cows were visited, 1,645 lactating cows were examined using the CMT test and 254 composite milk samples collected for bacteriological examination. Widespread management faults were noted, especially of milking machine usage and maintenance and the abuse of antibiotics. Fifty-six per cent of all quarters were found to have CMT scores of one or higher, 0.8% showed clinical mastitis and 3.2% were blind. The most common bacterial pathogen Staphylococcus aureus, was recovered from 31% of sampled cows. The resultant milk loss from clinical and subclinical mastitis was estimated to be 20% of the potential national production.
Sujet(s)
Mammite bovine/épidémiologie , Animaux , Bovins , Industrie laitière/méthodes , Industrie laitière/normes , Femelle , Jamaïque/épidémiologie , Infections à Klebsiella/épidémiologie , Infections à Klebsiella/médecine vétérinaire , Numération des leucocytes , Lait/cytologie , Infections à staphylocoques/épidémiologie , Infections à staphylocoques/médecine vétérinaire , Infections à streptocoques/épidémiologie , Infections à streptocoques/médecine vétérinaireRÉSUMÉ
A serological survey of goats in St Elizabeth Parish, Jamaica, comprising the breeding herd at the Agricultural Development Corporation (ADC) facility at Hounslow, five commercial herds and 21 family herds was carried out in 1985-1986. The Leptospira microscopic agglutination test indicated that one or more serovars in the Canicola serogroup were the most prevalent. Repeated samplings of goats at ADC, Hounslow demonstrated an increase in portlandvere and canicola seropositive animals following the onset of warmer weather and of icterohaemorrhagiae seropositive animals following the autumn rains and cooler weather. Apart from a cluster of family goats seropositive to pomona there was no geographical separation of reactors to the other serovars tested in the parish.