Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage
Regions such as southern Brazil live with drastic weather changes between winter and summer, resulting in direct disorders in the pasture, avoiding gradual change between grasses, creating periods of forage empty, a fact that diminishes the supply of forage, as well as its nutritional value. In thes...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2014-02-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/13916 |
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| author | Heloisa Godoi Bertagnon Elisangela Barboza da Silva Mariana Marcantonio Conneglian Mikael Neumann Greyson Vitor Zanatta Esper Guilherme Pepino Bastos Juliana ramos Pereira |
| author_facet | Heloisa Godoi Bertagnon Elisangela Barboza da Silva Mariana Marcantonio Conneglian Mikael Neumann Greyson Vitor Zanatta Esper Guilherme Pepino Bastos Juliana ramos Pereira |
| author_sort | Heloisa Godoi Bertagnon |
| collection | DOAJ |
| description | Regions such as southern Brazil live with drastic weather changes between winter and summer, resulting in direct disorders in the pasture, avoiding gradual change between grasses, creating periods of forage empty, a fact that diminishes the supply of forage, as well as its nutritional value. In these moments it becomes common to supplementation with intensive foods preserved as silage, a process that can reduce up to 50% levels of vitamin E from food, nutrient integrate cellular antioxidant system, responsible for the reduction of oxidative stress and immune function such phagocytosis, chemotaxis and oxidative metabolism in ruminants.Thus, the present study sought to measure the immunomodulatory activity of vitamin E in dairy cows in the middle of the stage of lactation, supplemented with corn silage and maintained on transition pasture not fertilized. We conducted assessments of hemogram, blood neutrophil function and cellularity of mammary glands before and after application of two parenteral doses of alpha tocopherol. It was observed in the treated group a significant increase for the series variable red blood, and to blood leukocytes mainly by an increase in neutrophils. In milk, there was increased cellularity, mainly by mononuclear elevation. As there was an increase of neutrophils positive to NBT test, it is believed that alpha tocopherol reduced cellular oxidative stress, enhancing phagocytosis and respiratory burst of neutrophils and decreased lipoperoxidation of cell membranes increases the halfspan of blood cells and milk. |
| first_indexed | 2024-04-12T23:41:00Z |
| format | Article |
| id | doaj.art-f3630f57fc9b41b49c92edd55ca776f3 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-04-12T23:41:00Z |
| publishDate | 2014-02-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-f3630f57fc9b41b49c92edd55ca776f32022-12-22T03:11:59ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592014-02-0135285786610.5433/1679-0359.2014v35n2p857Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silageHeloisa Godoi Bertagnon 0Elisangela Barboza da Silva 1Mariana Marcantonio Conneglian 2Mikael Neumann 3Greyson Vitor Zanatta Esper 4 Guilherme Pepino Bastos 5Juliana ramos Pereira 6Universidade Estadual do Centro OesteUniversidade Estadual de Santa CruzUniversidade Estadual do Centro OesteUniversidade Estadual do Centro OesteUniversidade de São PauloUniversidade Estadual do Centro OesteUniversidade Estadual do Centro OesteRegions such as southern Brazil live with drastic weather changes between winter and summer, resulting in direct disorders in the pasture, avoiding gradual change between grasses, creating periods of forage empty, a fact that diminishes the supply of forage, as well as its nutritional value. In these moments it becomes common to supplementation with intensive foods preserved as silage, a process that can reduce up to 50% levels of vitamin E from food, nutrient integrate cellular antioxidant system, responsible for the reduction of oxidative stress and immune function such phagocytosis, chemotaxis and oxidative metabolism in ruminants.Thus, the present study sought to measure the immunomodulatory activity of vitamin E in dairy cows in the middle of the stage of lactation, supplemented with corn silage and maintained on transition pasture not fertilized. We conducted assessments of hemogram, blood neutrophil function and cellularity of mammary glands before and after application of two parenteral doses of alpha tocopherol. It was observed in the treated group a significant increase for the series variable red blood, and to blood leukocytes mainly by an increase in neutrophils. In milk, there was increased cellularity, mainly by mononuclear elevation. As there was an increase of neutrophils positive to NBT test, it is believed that alpha tocopherol reduced cellular oxidative stress, enhancing phagocytosis and respiratory burst of neutrophils and decreased lipoperoxidation of cell membranes increases the halfspan of blood cells and milk.http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/13916Alfa tocopherol; Neutrophils; NBT; Milk celullarity |
| spellingShingle | Heloisa Godoi Bertagnon Elisangela Barboza da Silva Mariana Marcantonio Conneglian Mikael Neumann Greyson Vitor Zanatta Esper Guilherme Pepino Bastos Juliana ramos Pereira Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage Semina: Ciências Agrárias Alfa tocopherol; Neutrophils; NBT; Milk celullarity |
| title | Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage |
| title_full | Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage |
| title_fullStr | Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage |
| title_full_unstemmed | Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage |
| title_short | Immunomodulatory action of vitamin E in systemic immunity and mammary gland of dairy cows fed silage |
| title_sort | immunomodulatory action of vitamin e in systemic immunity and mammary gland of dairy cows fed silage |
| topic | Alfa tocopherol; Neutrophils; NBT; Milk celullarity |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/13916 |
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