Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress
The objective of this study was to assess the effects of auto-lysed yeast and yeast extract on performance and immune responses of cows in hot climate in the early lactation period. Twenty five lactating dairy cows randomly assigned to 5 groups and 5 replicates. Cows received basal diet with or with...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Editora da Universidade Estadual de Maringá (Eduem)
2020-04-01
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| Series: | Acta Scientiarum: Animal Sciences |
| Subjects: | |
| Online Access: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425 |
| _version_ | 1818269131051368448 |
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| author | Sogol Adili Ali Asghar Sadeghi Mohamad Chamani Parvin Shawrang Farhad Forodi |
| author_facet | Sogol Adili Ali Asghar Sadeghi Mohamad Chamani Parvin Shawrang Farhad Forodi |
| author_sort | Sogol Adili |
| collection | DOAJ |
| description | The objective of this study was to assess the effects of auto-lysed yeast and yeast extract on performance and immune responses of cows in hot climate in the early lactation period. Twenty five lactating dairy cows randomly assigned to 5 groups and 5 replicates. Cows received basal diet with or without auto-lysed yeast (20 or 40 g/d/head) or yeast extract (20 or 40 g/d/head) as on top-dressed. There were no differences for daily dry matter intake, milk production milk fat and the counts of red blood cells and white blood cells among treatments (p > 0.05). There were significant differences among treatments for immunoglobulin G (IgG) level, lymphocyte and neutrophil percentages. Yeast extract had no effect on IgG level, but auto-lysed yeast increased IgG level and neutrophil percentage and decreased lymphocyte percentage (p < 0.05). The highest relative interleukin-2 gene expression was for cows received auto-lysed yeast at the level of 40 g/d/head. Yeast extract had no significant effect on interleukin-2 gene expression as compared to the control group. It was concluded that auto-lysed yeast at the level of 40 g/d/head had no effect on performance, but it could positively influence on immune response of lactating dairy cows in hot climate during early period of lactation. |
| first_indexed | 2024-12-12T20:49:30Z |
| format | Article |
| id | doaj.art-f1729d762a7643349cad30f84004adca |
| institution | Directory Open Access Journal |
| issn | 1806-2636 1807-8672 |
| language | English |
| last_indexed | 2024-12-12T20:49:30Z |
| publishDate | 2020-04-01 |
| publisher | Editora da Universidade Estadual de Maringá (Eduem) |
| record_format | Article |
| series | Acta Scientiarum: Animal Sciences |
| spelling | doaj.art-f1729d762a7643349cad30f84004adca2022-12-22T00:12:29ZengEditora da Universidade Estadual de Maringá (Eduem)Acta Scientiarum: Animal Sciences1806-26361807-86722020-04-0142e48425e4842510.4025/actascianimsci.v42i1.4842548425Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stressSogol Adili0Ali Asghar Sadeghi1Mohamad Chamani2Parvin Shawrang3Farhad Forodi4Islamic Azad UniversityIslamic Azad UniversityIslamic Azad UniversityAtomic Energy Organization of IranIslamic Azad UniversityThe objective of this study was to assess the effects of auto-lysed yeast and yeast extract on performance and immune responses of cows in hot climate in the early lactation period. Twenty five lactating dairy cows randomly assigned to 5 groups and 5 replicates. Cows received basal diet with or without auto-lysed yeast (20 or 40 g/d/head) or yeast extract (20 or 40 g/d/head) as on top-dressed. There were no differences for daily dry matter intake, milk production milk fat and the counts of red blood cells and white blood cells among treatments (p > 0.05). There were significant differences among treatments for immunoglobulin G (IgG) level, lymphocyte and neutrophil percentages. Yeast extract had no effect on IgG level, but auto-lysed yeast increased IgG level and neutrophil percentage and decreased lymphocyte percentage (p < 0.05). The highest relative interleukin-2 gene expression was for cows received auto-lysed yeast at the level of 40 g/d/head. Yeast extract had no significant effect on interleukin-2 gene expression as compared to the control group. It was concluded that auto-lysed yeast at the level of 40 g/d/head had no effect on performance, but it could positively influence on immune response of lactating dairy cows in hot climate during early period of lactation.http://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425immunoglobulin g; immune response; interleukin-2; lymphocyte; neutrophil |
| spellingShingle | Sogol Adili Ali Asghar Sadeghi Mohamad Chamani Parvin Shawrang Farhad Forodi Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress Acta Scientiarum: Animal Sciences immunoglobulin g; immune response; interleukin-2; lymphocyte; neutrophil |
| title | Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress |
| title_full | Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress |
| title_fullStr | Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress |
| title_full_unstemmed | Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress |
| title_short | Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress |
| title_sort | auto lysed yeast and yeast extract effects on dry matter intake blood cells counts igg titer and gene expression of il 2 in lactating dairy cows under heat stress |
| topic | immunoglobulin g; immune response; interleukin-2; lymphocyte; neutrophil |
| url | http://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425 |
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