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Logo of bmcvetresBioMed Centralsearchsubmit a manuscriptregisterthis articleBMC Veterinary Research
 
BMC Vet Res. 2012; 8: 134.
Published online Aug 15, 2012. doi:  10.1186/1746-6148-8-134
PMCID: PMC3477040
Sub-clinical mastitis and associated risk factors on lactating cows in the Savannah Region of Nigeria
Aminu Shittu,corresponding author1,2 Jamilu Abdullahi,2 Aliyu Jibril,2 Aminu A Mohammed,3 and Folorunso O Fasina4
1LUCINDA Research Group, Department of Epidemiology and Population Health, Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Chester High Road, Neston, Cheshire, CH64 7TE, United Kingdom
2Department of Theriogenology and Animal Production, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, P.M.B 2254, Sokoto, Nigeria
3Department of Parasitology and Entomology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, P.M.B 2254, Sokoto, Nigeria
4Department of Production Animal Studies, University of Pretoria, Onderstepoort, 0110, South Africa
corresponding authorCorresponding author.
Aminu Shittu: aminu.shittu/at/liverpool.ac.uk; Jamilu Abdullahi: jamiluabdullahi40/at/yahoo.com; Aliyu Jibril: aliyujibril2002/at/yahoo.com; Aminu A Mohammed: draminu76/at/yahoo.co.uk; Folorunso O Fasina: daydupe2003/at/yahoo.co.uk
Received January 11, 2012; Accepted July 18, 2012.
Abstract
Background
Sub-clinical mastitis limits milk production and represents an important barrier to profitable livestock economics worldwide. Milk production from cows in Nigeria is not at optimum levels in view of many factors including sub-clinical mastitis.
Results
The overall herd-level prevalence rate for SCM was 85.33% (256/300 heads of cows) while the quarter-level prevalence rate of SCM was 43.25% (519/1,200 quarters). The prevalence of SCM was 50.67%, 43.67%, 39.67% and 39.13% for the left fore-quarter, right hind-quarter, left hind-quarter and right fore-quarter, respectively. The Rahaji breed had the highest prevalence of SCM with 65.91% (29/44), while the White Fulani breed had the least with 32.39% (57/176). A total of 32.33% (97/300) had only one mammary quarter affected, 30.33% (91/300) had two quarters affected, 16.00% (48/300) had three quarters affected while 6.67% (20/300) had all the four quarters affected. A total of 53.00% had SCM in multiple quarters (159/300). The risk of SCM decreased significantly among young lactating cows compared to older animals (OR = 0.283; P < 0.001; 95%CI = 0.155; 0.516). The Rahaji breed had significantly higher risk compared with the White Fulani breed (OR = 8.205; P = 0.013; 95% CI = 1.557; 43.226). Improved sanitation (washing hands before milking) will decrease the risk of SCM (OR = 0.173; P = 0.003; 95% CI = 0.054; 0.554).
Conclusion
SCM is prevalent among lactating cows in the Nigerian Savannah; and this is associated with both animal characteristics (age, breed and individual milk quarters) and milking practices (hand washing).Good knowledge of the environment and careful management of the identified risk factors with improved sanitation should assist farm managers and veterinarians in implementing preventative programmes to reduce the incidence of SCM.
Keywords: Risk factors, Sub-clinical mastitis, Cattle, Nigeria
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