Indirect diagnostic tests for the detection of subclinical mastitis in dairy goats experimentally infected with Staphylococcus aureus

Peixoto, Rodolfo de Moraes; Araújo, Roberto; Peixoto, Luciana Jatobá e Silva; Reges, Ariel Marques; Alves, Ana Paula Pereira; Júnior, José Wilton Pinheiro; Azevêdo, Sérgio Santos de; Costa, Mateus Matiuzzi da

doi:10.1590/0103-8478cr20150507

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…SCC levels in milk were high during the first few days after infection and then gradual decreased after intramammary treatment. As a result, SCC appear to be useful in predicting the infectious state of the udder (16).…”

Section: Discussionmentioning

confidence: 99%

The effectiveness of biogenic silver nanoparticles in the treatment of caprine mastitis induced by Staphylococcus aureus

Dujaily¹,

Mahmood²

2021

IJVS

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The aim of the present study is to determine the efficiency of silver nanoparticles in mastitis treatment induced by Staphylococcus aureus, 20 lactating goats were infected intramammary inoculated with 1.5×10 8 cfu/ml of virulence Staphylococcus aureus isolated from milk of caprine mastitis and at 48hr post inoculation, the animals were divided randomly into four groups equally, 1 st group left without treatment as control positive, 2 nd group treated intramammary infusion with 5 ml Silver nanoparticle after 2h from infection daily for 3 consecutive days, 3 rd group treated intramammary infusion with 5 ml Silver nanoparticle after 72h from infection daily for 3 consecutive days, 4 th group treated intramammary infusion with 5 ml Silver nanoparticle mixed with gentamycin after 72h from infection daily for 3 consecutive days. The silver nanoparticles used in this study were created using a green method from Bacillus clausii. The Scanning electron microscope was spherical and homogeneous form, with a size range of 25 to 45 nm. Results showed severe clinical signs of the mammary gland with heavy bacterial isolation in 1st control groups at 3, 6-, 9-, 14-and 21-days post infection, while animals that were intramammary treated with Silver nanoparticle alone or combination with gentamycin showed a disappearance in clinical signs of the mammary gland and bacterial isolation, it was concluded that Silver nanoparticle had a strong action against mastitis caused by Staphylococcus aureus.

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Section: Discussionmentioning

confidence: 99%

The effectiveness of biogenic silver nanoparticles in the treatment of caprine mastitis induced by Staphylococcus aureus

Dujaily¹,

Mahmood²

2021

IJVS

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“…In addition, the intra-mammary infections in sheep may also affect due the teats placement and udder conformation where the small udder, horizontally teats and inappropriate udder confirmation (deep and pendulous udder) may increase exposure to injury and contamination and then related to greater risk of mastitis disease [23]. Previously, [24] co-worker also confirmed that the pendulous udder was significantly associated with mastitis, whereas subclinical mastitis is invisible and relies on somatic cell count (SCC) or California Mastitis Test (CMT) as an indicator [25][26][27]. Thus, this situation has raised the concern among farmers or dairy producers since undiagnosed subclinical mastitis can probably be an possible source of infection for other lactating animals.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Subclinical Mastitis Effects on Live Weight, Body Condition Score (Bcs) and External Udder Measurements of Dorper Sheep

2021

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Mastitis is an inflammation of the mammary gland that can be classified as clinical and subclinical mastitis. The clinical mastitis can be diagnosed based on clinical signs, whilst subclinical mastitis mostly through somatic cell count (SCC). This study was carried out to determine the subclinical mastitis effects on live weight, body condition score (BCS) and external udder traits of Dorper sheep. A total 16 Dorper ewes were selected and screened for mastitis using the Californian mastitis test (CMT). The live weight, BCS and external udder traits (i.e. udder length (UL), udder width (UW), rear udder depth (RUD), cistern depth (CD) and teat length (TL) of the ewes were measured. The subclinical mastitis did not affect the live weight and BCS of Dorper ewes. Whilst for external udder measurements; the highest average of udder length, udder width, rear udder depth and cistern depth were indicated in CMT score as strong positive which shows that the measurement values of external ewes’ udder are increased when the strength detection of CMT scores increased and vice versa. However, all of the external udder parameters measured were not statistically (P>0.05) affected by the mastitis infection scores. The present results indicate that live weight, BCS and all external udder parameters did not influence the subclinical mastitis detected in the milk’s samples of the ewes. This study suggests that subclinical mastitis does not directly affected by morphology alteration of external udder traits, live weight or BCS, however it is likely affect the quality of milk produced.

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Indirect diagnostic tests for the detection of subclinical mastitis in dairy goats experimentally infected with Staphylococcus aureus

Abstract: The aim of the present study was to assess two diagnostic techniques (California mastitis test (CMT) and the somatic cell count (SCC)) that can diagnose mastitis in dairy goats

Cited by 2 publications

References 13 publications

The effectiveness of biogenic silver nanoparticles in the treatment of caprine mastitis induced by Staphylococcus aureus

The effectiveness of biogenic silver nanoparticles in the treatment of caprine mastitis induced by Staphylococcus aureus

Assessment of Subclinical Mastitis Effects on Live Weight, Body Condition Score (Bcs) and External Udder Measurements of Dorper Sheep

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