Antimicrobial Effects Caused by <i>Aloe barbadensis</i> Miller on Bacteria Associated with Mastitis in Dairy Cattle

Forno-Bell, Natalia; Bucarey, Sergio A.; García, D.; Iragüen, D.; Chacón, Óscar; Martín, Betty San

doi:10.1177/1934578x19896670

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…Aloe spp. is also known for its antimicrobial properties (Forno‐Bell et al, 2019; Maan et al, 2018), and it has been used as an intramammary remedy to treat mastitis in organic systems (Pol & Ruegg, 2007). In the present study, we did not observe any effect of Aloe on SCC and mastitis incidence.…”

Section: Discussionmentioning

confidence: 99%

Drying‐off dairy cows without antibiotic therapy and orally supplemented with lyophilized Aloe arborescens: effects on rumen activity, immunometabolic profile, and milk yield

Cattaneo

Piccioli-Cappelli

Minuti

et al. 2022

Animal Physiology Nutrition

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The drying‐off is a stressful stage of the lactation cycle of dairy cows that deeply affects cows' metabolism, inflammatory status, and immune system. The promising effects observed during the transition period resulting from supplementation with Aloe arborescens Mill. suggest its potential utility during this phase. A group of 23 Holstein dairy cows with somatic cell count (SCC) less than 200 × 103 cells/ml and without intramammary infections were enroled in the study. Cows were divided into two groups: one orally receiving 10 g/day of A. arborescens Mill. lyophilized powder (AL; 11 cows) between −7 and 7 days from dry‐off (DFD), and a control group (CTR; 12 cows). From −14 to 7 DFD and 7 and 28 days from calving, the body condition score and rectal temperature were determined, and rumen fluid, feces, milk, and blood samples were collected. Daily rumination times and milk yield were recorded. Data were analyzed through repeated measures mixed models. Compared to the CTR group, AL cows tended to show reduced production of volatile fatty acids in the rumen with acetate proportion that tended to be higher and valerate proportion that was lower. Moreover, Aloe supplementation caused a reduction in fecal dry matter. At the end of drying‐off, AL cows presented better liver function, as suggested by higher paraoxonase plasma concentrations at 7 DFD, higher glucose, and lower urea, but showed increased reactive oxygen metabolites. Aloe supplementation at dry‐off ameliorated inflammatory status after calving (lower haptoglobin and ceruloplasmin levels), and improved milk yield in the first weeks of subsequent lactation, without influencing milk composition, SCC, and incidence of intramammary infections. These results confirmed the positive effects of Aloe administration on liver function in dairy cows but indicate the need for further studies investigating the effects of Aloe on rumen fermentation profile and oxidative status.

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Section: Discussionmentioning

confidence: 99%

Drying‐off dairy cows without antibiotic therapy and orally supplemented with lyophilized Aloe arborescens: effects on rumen activity, immunometabolic profile, and milk yield

Cattaneo

Piccioli-Cappelli

Minuti

et al. 2022

Animal Physiology Nutrition

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“…Previous studies are mostly focused on the antimicrobial effect of A. barbadensis [22][23][24], while the study for antimicrobial effect of A. arborescens is significantly less detectable in the literature. Most studies cover the antimicrobial activity of aloe extracts [17,23,[25][26][27][28][29], not fresh aloe samples. For this reason, the purpose of our comparative study was to examine the antimicrobial efficacy of fresh juice and gel of both A. barbadensis and A. arborescens and compare it with the antimicrobial efficacy of some aloe commercial products.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Efficiency of Aloe arborescens and Aloe barbadensis Natural and Commercial Products

Kupnik

Primožič

Knez

et al. 2021

Plants

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Nowadays, there are many commercial products from natural resources on the market, but they still have many additives to increase their biological activities. On the other hand, there is particular interest in natural sources that would have antimicrobial properties themselves and would inhibit the growth and the reproduction of opportunistic microorganisms. Therefore, a comparative antimicrobial study of natural samples of aloe and its commercial products was performed. Qualitative and quantitative determination of antimicrobial efficiency of Aloe arborescens and Aloe barbadensis and its commercial products on fungi, Gram-negative, and Gram-positive bacteria was performed. Samples exhibited antimicrobial activity and slowed down the growth of all tested microorganisms. Research has shown that natural juices and gels of A. arborescens and A. barbadensis are at higher added concentrations comparable to commercial aloe products, especially against microbial cultures of Bacillus cereus, Candida albicans, and Pseudomonas aeruginosa, whose growths were completely inhibited at a microbial concentration of 600 μg/mL. Of particular importance are the findings of the good antimicrobial efficacy of fresh juice and gel of A. arborescens on tested microorganisms, which is less known and less researched. These results show great potential of A. arborescens for further use in medicine, cosmetics, food, and pharmaceutical industries.

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“…Furthermore, several studies have investigated the scavenging effects of plant extracts on common pathogenic bacteria responsible for mastitis [ 91 ]. For instance, aloe vera gel extract disrupted the cell membranes of 75% of S. aureus , 88% of Escherichia coli , and 88% of MRSA strains, resulting in cell lysis [ 92 ]. Most available antibiotics are inefficient at eradicating chronic mastitis.…”

Section: Promising Strategies Against S Aureus Inf...mentioning

confidence: 99%

Staphylococcus aureus and biofilms: transmission, threats, and promising strategies in animal husbandry

Song,

Tang,

Ding

et al. 2024

J Animal Sci Biotechnol

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Staphylococcus aureus (S. aureus) is a common pathogenic bacterium in animal husbandry that can cause diseases such as mastitis, skin infections, arthritis, and other ailments. The formation of biofilms threatens and exacerbates S. aureus infection by allowing the bacteria to adhere to pathological areas and livestock product surfaces, thus triggering animal health crises and safety issues with livestock products. To solve this problem, in this review, we provide a brief overview of the harm caused by S. aureus and its biofilms on livestock and animal byproducts (meat and dairy products). We also describe the ways in which S. aureus spreads in animals and the threats it poses to the livestock industry. The processes and molecular mechanisms involved in biofilm formation are then explained. Finally, we discuss strategies for the removal and eradication of S. aureus and biofilms in animal husbandry, including the use of antimicrobial peptides, plant extracts, nanoparticles, phages, and antibodies. These strategies to reduce the spread of S. aureus in animal husbandry help maintain livestock health and improve productivity to ensure the ecologically sustainable development of animal husbandry and the safety of livestock products.

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Antimicrobial Effects Caused by Aloe barbadensis Miller on Bacteria Associated with Mastitis in Dairy Cattle

Cited by 10 publications

References 20 publications

Drying‐off dairy cows without antibiotic therapy and orally supplemented with lyophilized Aloe arborescens: effects on rumen activity, immunometabolic profile, and milk yield

Drying‐off dairy cows without antibiotic therapy and orally supplemented with lyophilized Aloe arborescens: effects on rumen activity, immunometabolic profile, and milk yield

Antimicrobial Efficiency of Aloe arborescens and Aloe barbadensis Natural and Commercial Products

Staphylococcus aureus and biofilms: transmission, threats, and promising strategies in animal husbandry

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