Supplementation with green tea and oregano extracts on productive characteristics, blood metabolites, and antioxidant status of Jersey cows during the transition period

Vizzotto, Elissa Forgiarini; Stivanin, Sheila Cristina Bosco; Paris, Micheli de; Passos, L. T.; Werncke, D.; Klein, Caroline; Stone, Vinícius; Zanela, Maira Balbinotti; Fischer, Vívian

doi:10.1016/j.animal.2020.100032

Cited by 10 publications

(8 citation statements)

References 29 publications

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“…Treatments were control (CON) -without plant extracts in the diet; oregano extract (OR) -addition of 10 g per cow or 0.056% of commercial oregano added to the diet (dry matter basis); green tea (GT)addition of 5 g per cow or 0.028% of green tea extract added to the diet; and mixture (MIX) -addition of 10 g per cow or 0.056% g of oregano extract plus 5 g per cow or 0.028% of green tea extract added to the diet. The extracts and doses used in the present study are consistent with the levels recommended by feed additive suppliers; they were also the same used in a previous study, which was conducted with dairy cows in the transition period (Stivanin et al, 2019;Vizzotto et al, 2021).…”

Section: Methodsmentioning

confidence: 65%

“…The lower values of oxidized dichlorofluorescein in the erythrocytes and in plasma of MIX cows show the effectiveness of oregano and green tea extracts in decreasing the levels of oxidants, probably due to the stimulus to the antioxidant capacity. Vizzotto et al (2021) reported lower concentration for oxidized dichlorofluorescein in the erythrocytes and in plasma of dairy cows supplemented with similar dose of oregano extract. However, in the mentioned study, the authors did not supply oregano associated with green tea extract.…”

Section: Discussionmentioning

confidence: 89%

“…Paraskevakis et al (2015) added dried oregano leaves (1 mL of essential oil) to dairy goats' diet and observed an improvement in enzymatic and non-enzymatic antioxidant defenses in blood and milk. Vizzotto et al (2021) observed distinct effects on redox status biomarkers of dairy cows receiving oregano or green tea extracts during the transition period. To the best of our knowledge, no other study investigated the existence of additive effects of green tea and oregano extracts on hematological and antioxidant profiles of dairy cows.…”

Section: Introductionmentioning

confidence: 88%

“…In ruminants, the majority of in vitro and in vivo trials emphasizes the potential of essential oils and polyphenols in modifying rumen fermentation, decreasing methane emissions (Kolling et al, 2018). Based on previous reports, the addition of oregano and green tea extracts is expected to improve the redox state (Paraskevakis et al, 2015) without negatively affecting behavior, feed intake, and milk production (Kolling et al, 2018;Stivanin et al, 2019;Vizzotto et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Milk production and hematological and antioxidant profiles of dairy cows supplemented with oregano and green tea extracts as feed additives

Kolling¹,

Stivanin²,

Gabbi³

et al. 2022

Revista Brasileira De Zootecnia

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We aimed to evaluate the effects of the addition of oregano (Origanum vulgare) or green tea (Camellia sinensis L.) extracts (separately and associated) on feed intake, milk production, and hematological and antioxidant profiles of dairy cows. For that purpose, 16 Holstein and 16 Holstein-Gyr cows with 526.3±10.2 kg and within the first third of lactation were distributed according to a complete block design with measurements repeated in time. Treatments were control (CON), addition of 0.056% of oregano extract (OR), addition of 0.028% of green tea extract (GT), addition of a mixture of OR and GT extract (0.056% each) in the diet (MIX). Hematological and antioxidant profiles were monitored. Data were subjected to ANOVA, with block, treatment, days, and their interactions considered as fixed effects and animal and the residue as random effects. In Holstein cows, GT increased feed intake and milk yield compared with CON; in Holstein-Gyr crossbred cows, OR showed increased intake and GT increased milk yield compared with CON. Compared with CON, GT and OR decreased eosinophils concentration; OR showed the highest neutrophils concentration and neutrophils to leukocyte ratio. Compared with CON, OR presented increased catalase (CAT) activity, while GT increased the reduced glutathione concentration. The MIX treatment reduced CAT activity compared with OR, presented the lowest concentration of oxidized dichlorofluorescein in the erythrocytes (DCFER) and plasma (DCFPLA), and increased eosinophils concentration compared with GT and OR. Extracts differently affected feed intake and milk yield depending on genetic group. Feeding green tea and oregano extracts separately or associated distinctly affects the antioxidant indicators of lactating dairy cows.

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Section: Methodsmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Milk production and hematological and antioxidant profiles of dairy cows supplemented with oregano and green tea extracts as feed additives

Kolling¹,

Stivanin²,

Gabbi³

et al. 2022

Revista Brasileira De Zootecnia

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“…To the best of our knowledge, there is a lack of information about the effects of antioxidant supplementation on the pH of buffalo milk. A recent study [ 47 ] where extracts of oregano or green tea, endowed with antioxidant properties, were used as feed additives in Jersey cows during the transition period, reported that only the extract of oregano showed a tendency (0.05 < p < 0.10) in the reduction of milk pH compared to the control and green tea extract. Those authors explained the tendency of a lower pH with the lower content of SCC observed in the oregano-treated group compared to the other two groups.…”

Section: Discussionmentioning

confidence: 99%

Effect of Antioxidant Supplementation on Milk Yield and Quality in Italian Mediterranean Lactating Buffaloes

Evangelista

Bernabucci

Basiricò

2022

Animals

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Buffaloes are raised mainly to obtain milk that is nutritionally very rich. The technological characteristics of buffalo milk are optimal for processing into cheese, and it is mainly used to produce mozzarella cheese. Under stressful conditions, buffaloes, like other animals, produce milk qualitatively poorly. The stressors that can affect the quality of production are, in addition to other factors, deficiencies in nutrients such as vitamins, antioxidants, and minerals. In this study, we evaluated the effect of antioxidant supplementation on the quality of buffalo milk. Sixty-six buffaloes were enrolled and subdivided into two balanced groups of 33 each. The ZnSe group received 0.2 kg/head/day of Bufalo Plus® containing antioxidants and barley meal, CaCO3 and MgCO3 mix; the control group was supplemented with 0.2 kg/head/day of barley meal, CaCO3 and MgCO3 mix. The two groups were fed ad libitum with a total mixed ration (TMR). The amount of diet distributed was recorded daily, and the residue in the trough manger was recorded three times per week. TMR samples were taken every two weeks for each group. Daily milk yield was recorded twice a week. Milk samples were collected every four weeks and analysed for chemical and technological properties. Furthermore, milk total antioxidant capacity was determined. The results obtained showed that the antioxidant supplement had no effect on feed intake, feeding behaviour, and feed efficiency. The treatment positively influenced milk production while it did not affect the chemical characteristics of the milk. In addition, the supplement of antioxidants improved the milk clotting properties (MCP). The supplement did not affect the antioxidant activity of the milk.

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Behavior of Holstein and Holstein-Gyr lactating cows supplemented with oregano and green tea extracts: Plant extracts for lactating cows

Kolling

Stivanin

Gabbi³

et al. 2022

Journal of Veterinary Behavior

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Supplementation with green tea and oregano extracts on productive characteristics, blood metabolites, and antioxidant status of Jersey cows during the transition period

Cited by 10 publications

References 29 publications

Milk production and hematological and antioxidant profiles of dairy cows supplemented with oregano and green tea extracts as feed additives

Milk production and hematological and antioxidant profiles of dairy cows supplemented with oregano and green tea extracts as feed additives

Effect of Antioxidant Supplementation on Milk Yield and Quality in Italian Mediterranean Lactating Buffaloes

Behavior of Holstein and Holstein-Gyr lactating cows supplemented with oregano and green tea extracts: Plant extracts for lactating cows

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