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Aim: This study was performed to determine the prevalence of bovine brucellosis in Medea region, Northern Algeria. Materials and Methods: The study was carried out on 495 non-vaccinated cattle, of which 280 (30 males and 250 females) belonged to 57 cattle farms and 215 cows were sampled at abattoirs of Medea. Sera collected from the cattle were tested using the Rose Bengal test and confirmed by histopathological analysis. Results: Serological examination revealed that 7/57 farms (12.28%) were infected, of which 7/280 (2.5%) cattle were seropositive. The prevalence in females and males was 2.4% (6/250) and 3.33% (1/30), respectively. No significant difference has been observed between females and males. Older animals (≥8 years) were infected more. The prevalence of infection was 9.1%. Seroprevalence of Brucella infection in cows that have already had abortion was higher compared with non-aborted cows (4.34% and 2.20%, respectively). In abattoirs, a total of 25 (11.62%) seropositive cows were detected, and the histopathological analysis was positive in all these cows. Conclusion: The study indicates that brucellosis indeed exists in cattle in Medea and shows that the meat of slaughtered cattle tested positive for brucellosis may constitute a real risk of transmission to both butchery personnel and consumers, which requires that the meat of infected animals should be analyzed before being marketed.

Highlights The etiology of neonatal diarrhea is multifactorial and remains one of the biggest problems in ruminant livestock farming. This study represent the first report in Algeria on Cryptosporidium parvum , Escherichia coli K99, rotavirus and coronavirus in the etiology of neonatal diarrhea in lambs. Faecal samples from 559 neonatal lambs aged less than 30 days from 30 sheepfolds were screened with pathogen-specific antigen ELISA for C. parvum , E. coli K99, rotavirus, and coronavirus. The prevalence of C. parvum was the highest compared to other enteric pathogens. In various combinations, mixed infections were detected only with C. parvum .

Background Goats, often associated with sheep, are a vital part of the national economy in many countries around the world, and goat farming contributes significantly to the family economy, sustainable livelihoods and poverty reduction. In order to study the goat farming system in Algeria, this study, which started between September 2012 and June 2015, involved 141 farms in 104 villages and 21 wilayas in Algeria. Results The results showed that 99.29% of the goats producers were male, most of which (74.47%) were not the owners of the animals. Goat farming represents a main activity for only 18.44% of the farmers surveyed. They are generally found in small numbers often associated with a large sheep herd (78.72%). Of the 141 farms visited, 50.35% use a sedentary farming system, 17.71% practice seasonal transhumance during the dry season (May to October), and 31.91% are semi-sedentary. However, it is worth noting that females (85.82%) are often more numerous than males (14.18%) in the herd. The farm that generally constitutes the shelter is reduced in most cases to a simple pen, without a roof, inside which the animals are enclosed and whose space is delimited by a metal or wooden fence. Hygiene is in the majority of cases poor (57.45%). Most of the farms (78.01%) do not contain goats of the same breed, and crossbreeding is generally not controlled (78.72%) and is very rarely done with bucks of the same breed (14.89%). Most breeders (92.20%) largely neglect the health of their goats compared to sheep. Conclusion Finally, the Algerian goat seems to be largely neglected and considered as a secondary species associated with sheep. For this reason, it is mandatory to give more importance to this species. The Algerian government must carry out activities related to the conservation and improvement of breeding systems through the development of breeding programs and ensure the sustainable management of ecosystems used for food production.

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