30 documents found, page 1 of 3

Seroprevalence of Leptospira spp. infection in sheep from northwest of Rio Gran...

ABSTRACT: Leptospirosis is a zoonosis that is widely distributed in tropical countries. This infection is also associated with reproductive losses in livestock, which has a significant economic impact. The objective of this study is to investigate the seroprevalence and risk factors associated with leptospiral infection in commercial sheep flocks from the northwestern mesoregion of Rio Grande do Sul. Serum samp...

Repetition of estrus is the most frequent reproductive problem after breeding i...

ABSTRACT: Reproductive efficiency is one of the key elements for any milk production system to be successful. In this regard, reproductive management must be planned properly and the identification of the main reproductive disorders that affect the herd is primordial for decision-making. The aim of the present study was to identify the main reproductive problems that affect dairy herds on Rio de Janeiro (RJ), B...

Molecular demonstration of intermittent shedding of Leptospira in cattle and sh...

ABSTRACT: For a long time, it has been stated that urine leptospiral shedding is intermittent, which was observed primarily by culturing. However, culturing presents serious limitations, mainly low sensitivity, and failure on detection of leptospires cannot be neglected. PCR presents several advantages, mainly higher sensitivity. The present study aimed to analyze the occurrence of intermittency on leptospiral ...

Leptospirosis in native mixed-breed sheep slaughtered in a semiarid region of B...

ABSTRACT: Sheep breeding is an economic activity of great value for the Brazilian livestock industry, and infectious diseases can significantly compromise its productivity. The aim of this study was to detect Leptospira spp. in mixed breed sheep from a semiarid region of the State of Paraíba, Northeast Brazil. In total, 49 blood and renal tissue samples, as well as 25 urine samples, were collected from 49 sheep...

False-negative reactions to the comparative intradermal tuberculin test for bov...

ABSTRACT: According to the Brazilian National Program for the Control and Eradication of Animal Brucellosis and Tuberculosis (PNCEBT), the routine tests for the diagnosis of bovine tuberculosis in the country are the simple intradermal tuberculin test (SITT) of the Ministry of Agriculture, Livestock and Food Supply (MAPA), the caudal fold test and the comparative intradermal tuberculin test (CITT). The latter i...

Qualitative and quantitative analysis of bacteria from vaginitis associated wit...

ABSTRACT: This study evaluated the presence of vaginitis and the bacterial load associated with different intravaginal implants in ewes. Twenty-four Dorper and crossbred ewes were allocated into three groups and received intravaginal implant containing 0.3g progesterone (CIDR(r)), 60mg MAP or sponges without progesterone (CONTROL) for six days. Then, CIDR and MAP treated-ewes received 12.5mg dinoprost and 300IU...

Análise de custo-efetividade de protocolos no diagnóstico da tuberculose bovina...

Resumo: Em diversos países, a tuberculose bovina, causada por Mycobacterium bovis, é tanto um problema econômico quanto de saúde pública. Mundialmente, são implementados programas de erradicação da enfermidade com políticas baseadas em testes tuberculínicos e abate dos animais reativos, porém pouco se sabe sobre os custos e a efetividade das políticas de erradicação. O presente estudo avaliou a relação de custo...

First isolation and characterization of Leptospira interrogans serogroup Austra...

The purpose of this study was to report the first recovery and characterization of Leptospira interrogans (serogroup Australis) from urine of swine in Brazil. The isolate was studied by serogrouping, MLVA, PGFE, and partial sequencing of rrs and secY. It was serogrouped as serogroup Australis, probably serovar Bratislava (titre 1,600), and sequenced as Leptospira interrogans. The MLVA and PGFE profiles also sug...

OCORRÊNCIA DE ANTICORPOS CONTRA O HERPESVÍRUS EQUINO E VIRUS DA ARTERITE EQUINA...

Molecular characterization of the first leptospires isolated from goats in Brazil

Two Leptospira sp. isolates were obtained by the first time from goats in Brazil and characterized by sequencing rrs, rpoB and secY genes, PFGE and typing with monoclonal antibodies. Both isolates are identical and belong to Leptospira santarosai. Analysis of the rrs and the rpoB genes sequences revealed 100% identity between the goat isolates and the Bananal reference strain. When secY sequences of the two iso...