title: Leptospirosis as the most frequent infectious disease impairing productivity in small ruminants in Rio de Janeiro, Brazil.
abstract: Despite the importance of small ruminants breeding in developing countries, milk/meat productivity remains unsatisfactory. Infectious diseases, such as leptospirosis, brucellosis, and small ruminant lentiviruses (SRLVs), contribute to this scenario. The objective of the present study was to determine the role of each of these diseases in the productivity of small ruminants breeding in Rio de Janeiro, Brazil. In goats, 343 samples were tested for leptospirosis, 560 for Brucella abortus, and 506 for caprine arthritis-encephalitis (CAE), whereas in sheep, 308 samples were tested for leptospirosis, 319 for B. abortus, 374 for Brucella ovis, and 278 for Maedi-Visna (MV). Regarding leptospirosis, 25.9% of goats and 47.4% sheep were seroreactive, with serovar Hardjo the most prevalent in both species. Anti-B. abortus agglutinins were found in 0.7% of all samples, exclusively in goats. In relation to SRLVs, 8.6% of goats and 3.2% of sheep samples were positive for CAE and MV, respectively. Leptospirosis was the major infectious problem in the small ruminants sampled and may contribute to impaired productivity of these animals.
authors: Veterinary Bacteriology Laboratory, Universidade Federal Fluminense, Niterói, RJ 24210-130, Brazil.
authors: Gabriel
authors: G
authors: Martins
authors: Bruno
authors: B
authors: Penna
authors: Camila
authors: C
authors: Hamond
authors: Rachel Cosendey-Kezen
authors: RC
authors: Leite
authors: Andressa
authors: A
authors: Silva
authors: Ana
authors: A
authors: Ferreira
authors: Felipe
authors: F
authors: Brandão
authors: Francisco
authors: F
authors: Oliveira
authors: Walter
authors: W
authors: Lilenbaum
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000914:Antibodies, Viral / Q000097:blood; D016088:Arthritis-Encephalitis Virus, Caprine / Q000302:isolation & purification; D001938:Brazil / Q000453:epidemiology; D002003:Brucella abortus / Q000302:isolation & purification; D042061:Brucella ovis / Q000302:isolation & purification; D002006:Brucellosis / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D015511:Goat Diseases / Q000097:blood / Q000453:epidemiology* / Q000382:microbiology; D006041:Goats; D016180:Lentivirus Infections / Q000453:epidemiology / Q000662:veterinary*; D007919:Leptospira / Q000302:isolation & purification; D007922:Leptospirosis / Q000453:epidemiology / Q000662:veterinary*; D015995:Prevalence; D011446:Prospective Studies; D012756:Sheep; D012757:Sheep Diseases / Q000097:blood / Q000453:epidemiology* / Q000382:microbiology; D014790:Visna-maedi virus / Q000302:isolation & purification
chemical_list: D000907:Antibodies, Bacterial; D000914:Antibodies, Viral