Veterinarski arhiv, Vol. 69 No. 2, 1999.
Izvorni znanstveni članak
Prevalence of bovine mastitis in Maiduguri Borno State, Nigeria.
James Agbo Ameh
; Faculty of Veterinary Medicine, University of Maiduguri, Maiduguri Borno State, Nigeria
Tobias Edgbe-Nwiyi
; Faculty of Veterinary Medicine, University of Maiduguri, Maiduguri Borno State, Nigeria
Lamido Tanko Zaria
; Faculty of Veterinary Medicine, University of Maiduguri, Maiduguri Borno State, Nigeria
Sažetak
Mastitis in cows was investigated by surveying a number of herds located within and around Maiduguri, Nigeria. Five thousand cows (in lactation and dry) were examined. The prevalence of mastitis was assessed by the results of physical examinations of the mammary gland by palpation, and by evaluation of milk secretion. Bacteriological examination also was carried out on all milk samples collected from affected cows, as well as some selected control cows. One hundred and four (2.1%) of the 5,000 cows examined showed evidence of clinical mastitis. There was no significant difference in the number of quarters affected in relation to their anatomical positions (fore- and hindquarters). The survey revealed that the majority of cases occurred in cows between 4 and 7 years of age and that the incidence declined as the animals became older. One hundred and fifty-four apparently normal cow udders (53%) contained bacterial pathogens. On a cultural examination of 104 milk samples from affected cows, the recovery rate was 77%. Staphylococcus aureus (34.6%) occurred most frequently in the mastitic milk, followed by coagulase negative staphylococci (15.4%). Other bacteria isolated from mastitic cows milk were Streptococcus sp. (9.6%); Escherichia coli (6.7%); Actinomyces pyogenes (5.8%); Bacillus spp. (2.9%) and Salmonella sp. (1.9%). The prevalence of bovine mastitis in this area was sufficiently high as to cause substantial economic loss to farmers. It is therefore imperative that measures aimed at prevention and control of the disease (mastitis) be instituted in all the herds.
Ključne riječi
bovine mastitis; disease prevalence; etiology; Nigeria
Hrčak ID:
105191
URI
Datum izdavanja:
18.4.1999.
Posjeta: 1.542 *