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

Vista sencilla de ítem
dc.creatorSogol Adili
dc.creatorAli Asghar Sadeghi
dc.creatorMohamad Chamani
dc.creatorParvin Shawrang
dc.creatorFarhad Forodi
dc.date2020
dc.date.accessioned2026-07-07T03:59:06Z
dc.descriptionThe 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.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303162575042
dc.identifierhttps://www.redalyc.org/journal/3031/303162575042/
dc.identifierhttps://www.redalyc.org/journal/3031/303162575042/html/
dc.identifierhttps://www.redalyc.org/journal/3031/303162575042/303162575042.epub
dc.identifierhttps://www.redalyc.org/journal/3031/303162575042/movil
dc.identifier10.4025/actascianimsci.v42i1.48425
dc.identifier.urihttp://hdl.handle.net/123456789/449557
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Vol.42
dc.subjectAgrociencias
dc.titleAuto-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
dc.typeartículo científico

Archivos

Colecciones

Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá