Balance of pH of chicks from eggs injected with ascorbic acid and subjected to thermal stress

• Autor(a) principal: Sgavioli, Sarah [UNESP]
• Data de Publicação: 2012
• Outros Autores: De Almeida, Vitor R. [UNESP], De Morita, Viviane S. [UNESP], Zaniratu, Gisele L. [UNESP], De Oliveira, João A. [UNESP], Boleli, Isabel C. [UNESP]
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://elibrary.asabe.org/azdez.asp?JID=1&AID=41596&CID=iles2012&T=2; http://hdl.handle.net/11449/73934
• topic: Blood; In ovo; Incubation; Thermoneutral; Acid-base balance; Application level; General linear models; High temperature; Incubation temperatures; Metabolic rates; Agriculture; Blood pressure; Carbon dioxide; Sodium bicarbonate; Thermal stress; Ascorbic acid

This study aimed to verify that chicks from eggs injected with ascorbic acid and subjected to heat stress would have changes in acid-base balance, compared to chicks incubated at thermoneutral without injection of ascorbic acid. The parameters evaluated were blood pressure of carbon dioxide and oxygen, base excess, total carbon dioxide, concentration of sodium, potassium, ionized calcium, bicarbonate and pH of newly hatched male chicks, hatched from eggs injected with acid ascorbic acid (AA) and subjected to heat stress during incubation. The experimental design was completely randomized in factorial scheme 5 (application levels of ascorbic acid) x 2 (incubation temperatures). The data were subjected to analysis of variance using the General Linear Model procedure (GLM) of SAS ®. For the blood pH was observed significant interaction (p <0.05) between treatments with application in eggs and incubation temperatures. For the other parameters were not significant effects (p< 0.05) of AA level and neither temperature of incubation. Analyzing the unfolding of the interaction to pH was observed that chicks from eggs injected with 6% ascorbic acid and subjected to heat stress during incubation had a higher pH value compared with the thermoneutral temperature incubated (p <0.05). Therefore, it is suggested that the incubation of eggs in high temperature (39°C) can alter the metabolic rate of these embryos.