Principais alterações no leite por agentes causadores de mastite no rebanho caprino dos estados de Minas Gerais e Rio de Janeiro

Almeida, Juliana Ferreira de; Aquino, Maria Helena Cosendey de; Magalhaes, Humberto B.; Nascimento, Elmiro Rosendo do; Pereira, Vla; Ferreira, Tiago Osório; Barreto, Maria Lúcia

doi:10.1590/s1808-16572013000100003

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…infection on the composition of goat milk was considered. However, it is known that goat milk composition can be influenced by multiple factors, such as: feeding, race, lactation period, milk production, season of the year, age of the animal (ALMEIDA et al, 2013), in addition to the presence of other microorganisms.…”

Section: Resultsmentioning

confidence: 99%

Mycoplasma agalactiae and the Mycoplasma mycoides cluster in goat herds in the states of Pernambuco and Paraíba, Brazil

Lopes

Silva

Moraes

et al. 2019

SCA

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The objective of this study was to detect Mycoplasma agalactiae (Ma) and the Mycoplasma mycoides cluster (Mmcluster) in 373 goat milk samples of different breeds from herds located in Pernambuco and Paraíba states, as well as to evaluate somatic cell count (SCC) and milk composition from positive animals. For this, DNA extraction from milk samples was carried out, followed by generic and species-specific amplification by Polymerase Chain Reaction (PCR). Milk constituents were determined by medium infrared spectrometry and SCC by flow cytometry. Analyses of variance and tests of comparison of means verified the effects of positivity on the evaluated characteristics. The frequencies for Ma and Mmcluster were 43.21 and 5.70%, respectively. In all genetic groups, Ma was detected in all positive samples, whereas Mmcluster was only observed in samples from Moxotó, Parda Sertaneja, and that without a defined racial pattern. Statistical difference was observed (p < 0.05) between mean values of protein, casein and SCC in positive and negative Ma samples. In terms of Mmcluster there was only a statistically significant difference in the SCC parameter. The detection of Mycoplasma in samples of goat milk suggests an introduction of infected animals into the evaluated herds, as well as possible contact with the etiological agents at fairs and exhibitions.

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Section: Resultsmentioning

confidence: 99%

Mycoplasma agalactiae and the Mycoplasma mycoides cluster in goat herds in the states of Pernambuco and Paraíba, Brazil

Lopes

Silva

Moraes

et al. 2019

SCA

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“…Mastitis, the inflammatory process of the mammary gland, is considered to be one of the major diseases affecting herds of dairy goats. This disease is associated with losses in production and economic losses to the farmer and industry (Almeida et al 2013). Bacteria of the genus Staphylococcus spp.…”

Section: Introductionmentioning

confidence: 99%

Proteomics characterization of Staphylococcus spp. from goat mastitis and phenogeno-typical assessment of resistance to beta-lactamics

et al. 2021

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Mastitis occupies a prominent place among the diseases that affect dairy herds due to economic problems and public health. Staphylococcus spp. are infectious agents more involved in the etiology of caprine mastites, especially coagulase-negative Staphylococcus. Nineteen isolates of Staphylococcus spp. were obtained from subclinical caprine mastitis. All isolates were characterized by MALDI-TOF MS, being 47.36% (9/19) identified for S. epidermidis, 15.78% (3/19) for S. warneri, 10.52% (2/19) for S. aureus and S. caprae and 5.26% (1/19) for S. lugdunensis, S. simulans, and S. cohnii. All isolates characterized by MALDI-TOF were subjected a to polymerase chain reaction (PCR) for the 16S rRNA gene of Staphylococcus spp. to confirm the gender. After determining the species, tests for phenotypic detection of resistance to beta-lactams were carried out simple disk diffusion oxacillin, cefoxitin, penicillin G and amoxicillin + clavulanic acid, agar “screen” oxacillin and microdilution (MIC) cefoxitin. The disk diffusion test showed a strength of 58% (11/19) for penicillin G, 26.31% (5/19) for cefoxitin and 26.31% (5/19) for oxacillin. All strains were susceptible to amoxicillin + clavulanic acid and agar “screen” oxacillin. In the MIC, 63.15% (12/19) of the samples were cefoxitin resistant (MIC >4.0μg/ml). Then isolates were subjected to detection of the mecA resistance genes and regulators (mecl and mecRI), mecC and blaZ. Two samples of Staphylococcus epidermidis had the mecA gene. All isolates were negative for the mecA gene variant, mecl, mecRI, mecC and blaZ. These findings reinforce the importance of this group of microorganisms in the etiology of subclinical mastitis in goats and open perspectives for future research to investigate the epidemiology of the disease.

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“…A mastite em caprinos é predominantemente subclínica e os patógenos comumente relacionados com infecções intramamárias são Staphylococcus e Streptococcus, considerados os principais microorganismos contagiosos, além de agentes ambientais como enterobactérias e Mycoplasma spp. (ALMEIDA et al, 2013).…”

Section: Introductionunclassified

Diagnóstico e etiologia de mastite subclínica em caprinos leiteiros

Barros

Alves²,

Silva³

et al. 2018

Rev. Cien. Agr.

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A caprinocultura é uma atividade com relevante importância socioeconômica para a região Nordeste brasileira, sendo praticada, principalmente, por pequenos produtores e em propriedades características de agricultura familiar. A quantidade e qualidade do leite é influenciada por parâmetros zootécnicos, especialmente por meio da sanidade dos animais. Assim, aspectos microbiológicos são importantes para com a prevenção e controle de enfermidades como a mastite subclínica. Diante disso, objetivou-se por meio desse trabalho o diagnóstico da etiologia de mastite subclínica em caprinos leiteiros no Estado de Alagoas. Foram colhidas de forma aleatória, 200 amostras de leite procedentes de 100 cabras em diferentes estágios de lactação oriundas de uma propriedade leiteira do município de Coité do Nóia no estado de Alagoas, Brasil. Os animais eram da raça Saanen, Toggenburg, Parda Alpina e mestiços, em diferentes graus de sangue criados de forma intensiva. Para o diagnóstico da mastite subclínica foi aplicado o California Mastitis Test (CMT). Para o exame microbiológico foram coletados individualmente dos antímeros mamários um volume de 10 ml em frascos com tampa rosqueável, esterilizados e previamente identificados com o número do animal. O isolamento bacteriano foi realizado através de plaqueamento em Ágar base acrescido de sangue ovino a 5%. Por meio das análises foi observado que Staphylococcusspp. foi o micro-organismo predominante como agente etiológico de mastite subclínica.

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Principais alterações no leite por agentes causadores de mastite no rebanho caprino dos estados de Minas Gerais e Rio de Janeiro

Cited by 4 publications

References 15 publications

Mycoplasma agalactiae and the Mycoplasma mycoides cluster in goat herds in the states of Pernambuco and Paraíba, Brazil

Mycoplasma agalactiae and the Mycoplasma mycoides cluster in goat herds in the states of Pernambuco and Paraíba, Brazil

Proteomics characterization of Staphylococcus spp. from goat mastitis and phenogeno-typical assessment of resistance to beta-lactamics

Diagnóstico e etiologia de mastite subclínica em caprinos leiteiros

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