Título:	Milk production and hematological and antioxidant profiles of dairy cows supplemented with oregano and green tea extracts as feed additives.
Autoria:	KOLLING, G. J. STIVANIN, S. C. B. GABBI, A. M. MACHADO, F. S. FERREIRA, A. L. CAMPOS, M. M. TOMICH, T. R. CUNHA, C. S. KLEIN, C. P. AUGUST, P. M. MATTÉ, C. DILL, S. W. PEREIRA, L. G. R. FISCHER, V.
Afiliação:	GIOVANI JACOB KOLLING, Faculdade Meridional; SHEILA CRISTINA BOSCO STIVANIN, Universidade Federal do Rio Grande do Sul; ALEXANDRE MOSSATE GABBI, Eurotec Nutrition, Research and Innovation; FERNANDA SAMARINI MACHADO, CNPGL; ALEXANDRE LIMA FERREIRA; MARIANA MAGALHAES CAMPOS, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; CAMILA SOARES CUNHA, Universidade Federal do Rio Grande do Sul; CAROLINE PERES KLEIN, Universidade Federal do Rio Grande do Sul; PAULINE MACIEL AUGUST, Universidade Federal do Rio Grande do Sul; CRISTIANE MATTÉ, Universidade Federal do Rio Grande do Sul; SUSANE WERLE DILL, Universidade Federal do Pampa; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; VIVIAN FISCHER, Universidade Federal do Rio Grande do Sul.
Ano de publicação:	2022
Referência:	Revista Brasileira de Zootecnia, v. 51, e20210150, 2022.
Conteúdo:	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.
Thesagro:	Bovino Gado Gir
NAL Thesaurus:	Holstein Gir (cattle breed)
Digital Object Identifier:	https://doi.org/10.37496/rbz5120210150
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPGL)