Subclinical mastitis in dairy cows in Swiss organic and conventional production systems

Roesch, M.; Doherr, Marcus G.; Schären, Walter; Schällibaum, M; Blum, Jürg W.

doi:10.1017/s002202990600210x

Cited by 52 publications

(47 citation statements)

References 27 publications

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“…De maneira similar aos achados do presente estudo, a maior prevalência de mastite subclínica, comparativamente a clíni-ca, em rebanhos bovinos com produção de leite orgânico também tem sido assinalada em outros países, causada predominantemente por microrganismos de origem contagiosa (Guinot- Thomas et al 1991, Roesch et al 2007). Este achado pressupõe que devem ser direcionados esforços no controle da mastite nas quatro propriedades estudadas, priorizando medidas voltadas aos microrganismos contagiosos, que possam ser adequadas à sistemática orgânica de produção, incluindo noções de higiene do ordenhador, manejo adequado na ordenha, adoção de pós-dipping e descarte de animais com mastite crônica.…”

Section: Resultsunclassified

“…(4,3%), em cultura pura ou em associação (Quadro 2). Esses achados são condizentes com a literatura visto que estes microrganismos são reconhecidos como os principais agentes causais de mastite em bovinos (Langoni et al 1998a, Costa 2001, Santos & Fonseca 2007, incluindo animais manejados no sistema orgânico (GuinotThomas et al 1991, Roesch et al 2007. A mastite é reconhecida como a principal doença que afeta animais de produção direcionados à exploração leiteira, decorrente das alterações provocadas na composição físico-química e na celularidade do leite, dos prejuízos com a redução na produção determinados pelos agravos no tecido glandular, somados aos reflexos na Saúde Pública (Langoni 2000, Ribeiro 2008).…”

Section: Avaliação De Resíduos De Antimicrobianos No Leiteunclassified

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Microrganismos patogênicos, celularidade e resíduos de antimicrobianos no leite bovino produzido no sistema orgânico

et al. 2009

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RESUMO.-Nos últimos anos cresce a preocupação dos consumidores quanto à qualidade do leite e às condições de produção e bem-estar dos animais. Simultaneamente, aumenta o interesse e o consumo de produtos e subprodutos de origem animal produzidos no sistema orgânico, com destaque para o leite e derivados. O presente estudo investigou a presença de microrganismos patogênicos, a sensibilidade e a multi-resistência dos isolados aos antimicrobianos, a celularidade e a presença de resíduos de drogas no leite de vacas, com e sem mastite, produzido no sistema orgânico. In last years increase the importance of milk quality and conditions of bovine milking. Simultaneously, increase the interest about organic milk and derivates. The aim of present study was investigate the milk pathogens, sensitivity and multiple drug resistance of isolates, somatic cell count and residues of drugs in milk, from cattle with and without mastitis, come from four little organic dairy farms in State of São Paulo, Brazil. Were used 148 cattle on the middle period of lactation. From these, two showed clinical mastitis, 72 subclinical mastitis and 74 without signs of mammary inflammation (controls). Staphylococcus aureus (25.7%), Streptococcus spp. (21.4%), Corynebacterium bovis (12.9%), Streptococcus agalactiae (4.3%) and Staphylococcus spp. (4.3%) were the more-frequent microorganisms isolated from animals with mastitis. Aspergillus spp. was isolated from one animal. Ceftiofur (95.2%), oxacillin (84.2%), gentamicin (76.3%) and cefoperazone (70.3%) were the more effective drugs. High resistance of isolates were found to penicillin (53.5%), ampicillin (41.6%) and neomycin (38.6%). Multiple drug resistance to three or more drugs was observed in 40 (39.6%) isolates. Media of somatic cell count encountered in animals with mastitis and controls were 175,742.67cs/mL and 58,227.6 cs/mL, respectively. Antimicrobials residues in milk were detected in four (2.7%) animals. The present findings showed the low somatic cell count of animals, indicative of good quality of milk. However, pointed the need of control measures for contagious pathogens of bovine mastitis and more attention for prohibition of antimicrobial use in organic dairy farms.

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Section: Resultsunclassified

Section: Avaliação De Resíduos De Antimicrobianos No Leiteunclassified

Microrganismos patogênicos, celularidade e resíduos de antimicrobianos no leite bovino produzido no sistema orgânico

et al. 2009

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“…Other authors reported negative bacteriological findings in 17.7 to 26.5% from cases of clinical mastitis and 28.7 to 38.6% from cases of subclinical mastitis (Roesch et al, 2007).…”

Section: P Aeruginosa β-Laktammentioning

confidence: 99%

“…and Streptococcus spp. was revealed from cases of subclinical mastitis in dairy cows (Roesch et al, 2007;Kalmus et al, 2011). Saini et al (2013) reported higher prevalence of environmental mastitis pathogens and Escherichia coli in dairy herds, predominantly in early lactation.…”

Section: P Aeruginosa β-Laktammentioning

confidence: 99%

Mastitis Pathogens and Their Antimicrobial Susceptibility in Early Lactating Dairy Cows

Trajchev¹,

Nakov²,

Petrovska³

et al. 2017

AgricultForest

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SUMMARYA two years cross-sectional longitudinal survey was carried out for determination of udder pathogens prevalence and their antimicrobial profile in one commercial dairy farm. Dairy cows were selected in relation to date of calving and period of early lactation in order to minimize environmental impact. A udder quarters milk samples were obtained from totally 211 black-white dairy cows. The quarter milk-samples were screening using the California Mastitis Test (CMT) for detection of abnormal milk secretion (AMS) and from quarters with AMS were obtained milk-samples for microbiological examination in order to detect intramammary infections (IMI). The milk-samples were obtained in two periods: period from beginning of lactation until 21 st day in lactation and period from 22 nd to 42 nd day in lactation. The prevalence of IMI in period from beginning of lactation until 21 st day in lactation and period from 22 nd to 42 nd day in lactation was 4.03% and 4.38%, respectively. Based on CMT, there was found totally 162 udder quarters with AMS. From these quarters, the overall proportion of microbiological negative quarters was 56.17% and mastitis pathogens were isolated from 43.83% of udder quarters, from which the dominant mastitis pathogens were: Streptococcus agalactiae (19.14%), Enterococcus spp. (8.02%), Candida non-albicans (6.79%), Staphylococcus aureus (6.17%), Escherichia coli (1.85%), Aspergilus niger (1.23%) and Pseudomonas aeruginosa (0.62%). The results indicated that contagious pathogens were the most common patogens of IMI in early lactation. There was significant difference in the prevalence of intramammary infection (χ 2 =35.136, df=1, p<0.001) when comparing the front and rear udder quarters. The isolated bacteria were examined for determination of susceptibility to 27 most used antimicrobial agents for mastitis treatment. The most resistant strain was Staphylococcus aureus.

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“…One study (Garmo et al, 2010) found a significantly lower somatic cell count on organic farms as compared to conventional farms. On the other hand, five papers (Weller and Cooper, 1996;Vaarst and Bennedsgaard, 2001;Nauta et al, 2006;Roesch et al, 2007;Park et al, 2012) found a higher SCC on organic farms as compared to conventional farms. Two of these four studies (Weller and Cooper, 1996;Vaarst and Bennedsgaard, 2001), however, did not provide a level of significance.…”

Section: Dairy Cattlementioning

confidence: 99%

Sustainability of livestock production systems : a comparing conventional and organic livestock husbandry

Wagenberg¹,

Haas²,

Hogeveen³

et al. 2016

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This study analysed peer-reviewed literature comparing conventional and organic livestock production systems on sustainability indicators within the topics of economy, productivity, environment, animal welfare and public health. For many indicators, insufficient data were found to draw any conclusions on a difference. The strong points of both conventional and organic livestock production systems were used to formulate lessons learned for sustainable livestock production systems. As sustainability indicators often interact with other sustainability indicators in opposing directions, sustainable livestock production should be approached as a multi-criteria problem optimising a balanced combination of sustainability indicators in all topics.Deze studie heeft wetenschappelijke literatuur geanalyseerd, die conventionele en biologische dierlijke productiesystemen kwantitatief vergelijkt op duurzaamheidsindicatoren binnen de onderwerpen economie, productiviteit, milieu, dierenwelzijn en volksgezondheid. Voor veel indicatoren zijn onvoldoende gegevens gevonden om conclusies te trekken over een verschil. Gevonden sterke punten van zowel conventionele als biologische systemen zijn gebruikt om lessen te trekken voor duurzame veehouderij. Aangezien duurzaamheidsindicatoren vaak onderling samenhangen in tegenstrijdige richting moet een duurzame veehouderij gezien worden als een multicriteria beslissingsprobleem, waarin een gebalanceerde combinatie van indicatoren uit alle duurzaamheidsonderwerpen moet worden geoptimaliseerd.

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Subclinical mastitis in dairy cows in Swiss organic and conventional production systems

Cited by 52 publications

References 27 publications

Microrganismos patogênicos, celularidade e resíduos de antimicrobianos no leite bovino produzido no sistema orgânico

Microrganismos patogênicos, celularidade e resíduos de antimicrobianos no leite bovino produzido no sistema orgânico

Mastitis Pathogens and Their Antimicrobial Susceptibility in Early Lactating Dairy Cows

Sustainability of livestock production systems : a comparing conventional and organic livestock husbandry

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