| Registro completo |
| Provedor de dados: |
Animal Sciences
|
| País: |
Brazil
|
| Título: |
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
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
|
| Autores: |
Adili, Sogol
Sadeghi, Ali Asghar
Chamani, Mohamad
Shawrang, Parvin
Forodi, Farhad
|
| Data: |
2020-04-01
|
| Ano: |
2020
|
| Palavras-chave: |
Immunoglobulin G
Immune response
Interleukin-2
Lymphocyte
Neutrophil immunoglobulin G
Immune response
Interleukin-2
Lymphocyte
Neutrophil
|
| Resumo: |
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.
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.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425
10.4025/actascianimsci.v42i1.48425
|
| Editor: |
Editora da Universidade Estadual de Maringá
|
| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425/751375149795
|
| Formato: |
application/pdf
|
| Fonte: |
Acta Scientiarum. Animal Sciences; Vol 42 (2020): Publicação contínua; e48425
Acta Scientiarum. Animal Sciences; v. 42 (2020): Publicação contínua; e48425
1807-8672
1806-2636
|
| Direitos: |
Copyright (c) 2020 Acta Scientiarum. Animal Sciences
https://creativecommons.org/licenses/by/4.0
|
