Data/hora: 11/06/2024 11:59:20

Provedor de dados: | 89
País: | Brazil
Título: | Arthrospira (Spirulina) Platensis Can Be Considered as a Probiotic Alternative to Reduce Heat Stress in Laying Japanese Quails
Autores: | Hajati,H; Zaghari,M; Oliveira,HC.
Data: | 2020-01-01
Ano: | 2020
Palavras-chave: | Egg production; Heat stress; HSP70 gene; Japanese quails; Spirulina platensis.
Resumo: | ABSTRACT This study was conducted to investigate the effects of Arthrospira platensis (Spirulina platensis, SP) on feed intake, feed conversion ratio, egg weight, hen day egg production, intestinal microflora, heat stress biomarkers, and HSP70 gene expression in laying Japanese quails (Coturnix coturnix japonica) suffering heat stress condition. A total of 250 female quails were allocated to 5 treatments, 5 replicates and 10 birds in each replicate in a completely randomized design. Experimental treatments included: 1) basal diet, 2) basal diet+ 0.03 % probiotic, 3) basal diet+ 0.1 % SP, 4) basal diet+ 0.3 % SP, 5) basal diet+ 0.5 % SP. During the last 6 days of the experiment, the quails were exposed to 8h of 34±1°C. The birds had free access to feed and water during the experiment. The results showed that using probiotic and different levels of Spirulina had no significant effect on laying performance of Japanese quails (p&gt;0.05). Probiotic supplement increased Lactobacil bacteria population in laying quails’ ileum under heat stress (p&lt;0.05). Different levels of SP decreased Escherichia coli population in laying quails’ ileum suffering heat stress (p&lt;0.05).SP at the level of 0.5% caused the lowest blood Malondialdehyde level, heterophil, and H/L ratio (p&lt;0.05).However, HSP70 gene expression in the heart or the liver of laying quails was not different (p&gt;0.05). In conclusion, the results of the present study revealed that SP at the level of 0.5 % has the potential to be considered as a probiotic alternative in the diet of laying quails suffering heat stress condition.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100307
Editor: | Fundação APINCO de Ciência e Tecnologia Avícolas
Relação: | 10.1590/1806-9061-2018-0977
Formato: | text/html
Fonte: | Brazilian Journal of Poultry Science  v.22 n.1 2020
Fonte: | info:eu-repo/semantics/openAccess