The effect of experimentally induced subclinical mastitis on milk yield of ewes and on the growth of lambs

Fthenakis, G.C.; Jones, J.E.T.

doi:10.1016/0007-1935(90)90075-e

Cited by 108 publications

(60 citation statements)

References 6 publications

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“…Staphylococcus aureus, Streptococcus agalactiae and E. coli were the main aetiological agents of mastitis in ewes of the present study ( Table 3). Similar results had been reported by (Lafi and Hailat, 1998;Fthenakis and Jones, 1990) While in other study the most common organisms isolated from subclinical mastitis cases were coagulase-negative…”

Section: Discussionsupporting

confidence: 91%

“…Mycoplasma spp. and Staphylococcus aureus were the important pathogens, as they were isolated from 45.9 and 38.5 percent respectively of mammary secretions samples, while other microorganism were isolated at a lower rate (Fthenakis and Jones, 1990). The annual incidence of clinical mastitis in small ruminants is generally lower they 5%, but this incidence can increase sporadically (Contreras et al, 2007).…”

Section: Introductionmentioning

confidence: 95%

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Prevalence of Mastitis Pathogens and Their Resistance Against Antimicrobial Agents in Awassi Sheep in Al-Balqa Province of Jordan

Hawari

Obeidat

Awaisheh

et al. 2014

American Journal of Animal and Veterinary Sciences

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The primary objective of this study was to establish data on mastitis in Awassi Sheep in Al-Balqa Province of Jordan. Milk samples were collected from 260 lactating ewes that selected randomly from eight flocks. California Mastitis Test (CMT) gave result with 220 milk samples; 122 samples (55.5%) showed positive CMT. Infection with some bacterial species was associated with positive CMT. About 26% of the ewes revealed clinical signs of mastitis. The highest percentage of bacterial count, which range from 3×10 2 to <3.0 10 3 cfu mL −1 was founded in the milk samples. The most predominant bacteria isolated were Staphylococcus aureus, Streptococcus agalactiae, Streptococcus spp., Escherichia coli, Corynebacterium spp. and Coagulase negative Staphylococci. Sensitivity tests were applied to different isolated strains., Gentamycim, Ampicillin and Tetracycline were the most effective antimicrobial agents against the bacterial isolates.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 95%

Prevalence of Mastitis Pathogens and Their Resistance Against Antimicrobial Agents in Awassi Sheep in Al-Balqa Province of Jordan

Hawari

Obeidat

Awaisheh

et al. 2014

American Journal of Animal and Veterinary Sciences

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“…Isto no entanto, pode ser devido aos diferentes meios diagnósticos utilizados, o que dificulta comparações entre os estudos. Deve-se lembrar também que vários fatores como manejo, raça, clima e nutrição podem influenciar na incidência das infecções mamárias ovinas (Fthenakis & Jones 1990).…”

Section: Discussionunclassified

“…A mastite também está associada com a performance dos cordeiros (Burris & Baugus 1955, Torre-Hernandez & Hohenboken 1979, Fthenakis & Jones 1990) descarte de ovelhas, mortes (Watson & Buswell 1984), custos com tratamentos (Keisler et al 1992), gastos adicionais com mão-de-obra (Larsgrad & Vaabenoe 1993) e alteração na composição do leite (Green 1984, Hueston et al 1986b.…”

Section: Introductionunclassified

Perfil celular e microbiológico do leite de ovelhas Santa Inês no período lactante e pós-desmame

et al. 2008

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O objetivo deste trabalho foi avaliar o perfil microbiológico e celular do leite no período lactante e de involução ativa de ovelhas da raça Santa Inês. Foram avaliadas amostras lácteas de 12 ovelhas durante estes distintos períodos. Realizou-se o exame físico da mama, sendo as amostras lácteas submetidas à contagem de células somáticas (CCS), ao California Mastitis Test (CMT), ao exame microbiológico e aos testes de sensibilidade in vitro dos patógenos encontrados. Foram observados maiores escores do exame físico, CCS, CMT durante o período de involução ativa, além de uma alta persistência da infecção durante estes períodos. O período de involução ativa não se mostrou como um momento de alta susceptilidade. Os estafilococos coagulase negativa representaram o único gênero isolado das glândulas infectadas. Uma alta sensibilidade dos agentes etiológicos envolvidos frente aos diferentes antimicrobianos in vitro foi também observada.

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“…of these bacteria as the main aetiological agent of mastitis in sheep has been documented (Fthenakis and Jones 1990;Poutrel 1984). The primary impact of CNS-mediated subclinical mastitis is an increased number of somatic cells (Gougoulis et al 2008;Leitner et al 2000;Santos et al 2008).…”

mentioning

confidence: 99%

Genotypic Characterization of Coagulase-negative Staphylococci Isolated from Sheep Milk in Slovakia

et al. 2010

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Hitherto very few reports are available presenting identification and molecular characterization of the coagulase negative staphylococci (CNS) from sheep milk in the subclinical stage of mastitis. Furthermore, very scanty data are available on the epidemiological status of CNS in different Slovak provinces. Milk samples from 54 sheep farms located in eastern Slovak region were screened. A total 240 CNS were identified with series of biochemical testes (STAPH-API) and subjected further for genotyping with the help of pulse field gel electrophoresis (PFGE). The most frequently occurring CNS species according the biochemical characterization were: S. epidermidis (36.3 %), S. caprae (21.3 %), S. hominis (6.6 %), S. chromogenes (6.3 %), S. xylosus (5.8 %), S. warneri (5.0 %) and S. capitis (4.6 %). Further PFGE-based characterization of these isolates revealed six pulsotypes of the S. epidermidis, two of S. caprae, three of S. chromogenes, nine of S. hominis, five of S. capitis and seven of S. xylosus. These results contribute to knowledge of the epidemiological situation of the CNS from the subclinical form of mastitis in Slovakia.

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The effect of experimentally induced subclinical mastitis on milk yield of ewes and on the growth of lambs

Cited by 108 publications

References 6 publications

Prevalence of Mastitis Pathogens and Their Resistance Against Antimicrobial Agents in Awassi Sheep in Al-Balqa Province of Jordan

Prevalence of Mastitis Pathogens and Their Resistance Against Antimicrobial Agents in Awassi Sheep in Al-Balqa Province of Jordan

Perfil celular e microbiológico do leite de ovelhas Santa Inês no período lactante e pós-desmame

Genotypic Characterization of Coagulase-negative Staphylococci Isolated from Sheep Milk in Slovakia

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