Efficacy of vaccination and nisin Z treatments to eliminate intramammary Staphylococcus aureus infection in lactating cows

Guan, Ran; Wu, Junqiang; Xu, Wei; Su, Xiaoyan; Hu, Songhua

doi:10.1631/jzus.b1500222

Cited by 11 publications

(11 citation statements)

References 18 publications

(18 reference statements)

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“…SCM mainly occurs in the early and middle stages of lactation (Abebe et al., ; Iraguha et al., ; Mureithi & Njuguna, ; Zenebe et al., ). Early cure has obvious benefit with respect to milk yield and quality and cow health (Guan et al., ). However, early therapy should depend on the use of early and accurate diagnostic methods with high sensitivity.…”

Section: Discussionmentioning

confidence: 99%

“…The SCC is the far more used parameter for identification of cows with SCM in most countries around the world. In general, SCC > 200,000 cells/ml indicates SCM with very high sensitivity and specificity (Dohoo & Leslie, ; Guan et al., ; Sun et al., ). Measurement of the electrical conductivity (EC) of milk during milking has been extensively studied in cattle as a low‐cost mastitis detection method that can be easily automated, and in some cases it has reached 92% sensitivity and 93% specificity (Cavero, Tolle, Buxade, & Krieter, ).…”

Section: Discussionmentioning

confidence: 99%

“…cow, diagnosis, S100A12, subclinical mastitis 50,000 to 200,000 cells/ml of milk (Hiitiö et al, 2017). However, the cell counts of milk from cows with SCM can reach a few million cells per millilitre and usually range from 200,000 to 500,000 cells/ml (Guan, Wu, Xu, Su, & Hu, 2017;Smith, 1996;Sun et al, 2017). Milk from cows with clinical mastitis (CM) generally contains >500,000 cells/ml (Guan et al, 2017;Smith, 1996;Sun et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…However, the cell counts of milk from cows with SCM can reach a few million cells per millilitre and usually range from 200,000 to 500,000 cells/ml (Guan, Wu, Xu, Su, & Hu, 2017;Smith, 1996;Sun et al, 2017). Milk from cows with clinical mastitis (CM) generally contains >500,000 cells/ml (Guan et al, 2017;Smith, 1996;Sun et al, 2017). N-acetyl-β-D-glucosaminidase is used to measure cell damage, which is closely correlated with SCC and can be used to diagnose mammary gland infection (Guan et al, 2017;Hovinen et al, 2016;Williams, Marschke, Nottingham, & Kitchen, 1991).…”

Section: Introductionmentioning

confidence: 99%

“…Milk from cows with clinical mastitis (CM) generally contains >500,000 cells/ml (Guan et al, 2017;Smith, 1996;Sun et al, 2017). N-acetyl-β-D-glucosaminidase is used to measure cell damage, which is closely correlated with SCC and can be used to diagnose mammary gland infection (Guan et al, 2017;Hovinen et al, 2016;Williams, Marschke, Nottingham, & Kitchen, 1991). However, no single indicator can reflect all aspects of mastitis adequately.…”

Section: Introductionmentioning

confidence: 99%

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S100 calcium‐binding protein A12 as a diagnostic index for subclinical mastitis in cows

Zhong

Zhang

Zha

et al. 2018

Reprod Domestic Animals

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Diagnosis of subclinical mastitis is very important in management of the dairy industry and improvement of dairy cow productivity. S100A12, that is found in related tissues of mammals, is considered as an index for diagnosing inflammatory reaction. To evaluate whether S100A12 is involved in subclinical mastitis, milk somatic cell mRNA from 276 dairy cows was used to detect the transcriptional level of S100A12 by real-time quantitative polymerase chain reaction. A predictive analysis for mastitis was performed, and the correlation between S100A12 and other subclinical mastitis indicators was also assessed. The transcriptional levels of S100A12 in the milk of cows with mastitis were significantly higher than those in the milk of healthy cows (p < 0.05). The correlation analysis showed that S100A12 was positively associated with the somatic cell count and the sodium and chloride concentrations of milk. In contrast, a negative correlation was found between S100A12 and the potassium concentration and pH of milk. However, no significant correlation was detected between S100A12 and the other parameters, such as protein, lactose, ash, fat, density, Ca and SNF. These results suggested that the S100A12 level in milk may serve as a diagnostic tool for subclinical mastitis in cows without obvious clinical signs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

S100 calcium‐binding protein A12 as a diagnostic index for subclinical mastitis in cows

Zhong

Zhang

Zha

et al. 2018

Reprod Domestic Animals

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Enzymes as Enhancers for the Biodegradation of Synthetic Polymers in Wastewater

et al. 2018

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Synthetic polyesters are today the second-largest class of ingredients in household products and are entering wastewater treatment plants (WWTPs) after product utilization. One approach to improve polymer biodegradation in wastewater would be to complement current processes with polyester-hydrolyzing enzymes and their microbial producers. In this study, the hydrolysis of poly(oxyethylene terephthalate) polymer by hydrolases from wastewater microorganisms was investigated in vitro and under realistic WWTP conditions. An esterase and a cutinase from Pseudomonas pseudoalcaligenes and a lipase from Pseudomonas pelagia were heterologously expressed in Escherichia coli BL21-Gold(DE3) and were purified by a C-terminal His tag. The hydrolases were proven to hydrolyze the polymer effectively, which is a prerequisite for further biodegradation. The hydrolases maintained high activity up to 50 % upon lowering the temperature from 28 to 15 °C to mimic WWTP conditions. The hydrolases were also not inhibited by the wastewater matrix. Polyester-hydrolyzing enzymes active under WWTP conditions and their microbial producers thus have the potential to improve biological treatment of wastewater rich in synthetic polymers.

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Nutraceuticals in Mastitis

Coppock¹

2019

Nutraceuticals in Veterinary Medicine

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Efficacy of vaccination and nisin Z treatments to eliminate intramammary Staphylococcus aureus infection in lactating cows

Cited by 11 publications

References 18 publications

S100 calcium‐binding protein A12 as a diagnostic index for subclinical mastitis in cows

S100 calcium‐binding protein A12 as a diagnostic index for subclinical mastitis in cows

Enzymes as Enhancers for the Biodegradation of Synthetic Polymers in Wastewater

Nutraceuticals in Mastitis

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