Heat stress in poultry and the beneficial effects of ascorbic acid (vitamin C) supplementation during periods of heat stress

Abidin, Zain Ul; Khatoon, Aisha

doi:10.1017/s0043933913000123

Cited by 86 publications

(56 citation statements)

References 98 publications

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“…Temperature, relative humidity and wind speed are the major environmental factors affecting animal thermal comfort, providing limits for adequate production (NASCIMENTO et al, 2011;AMARAL et al, 2011). The high temperature might cause mortality in birds according to their exposure to high temperatures reaching hyperthermia, a high body temperature condition leading to respiratory alkalosis and increasing blood pH due to excessive panting, causing the death of the birds (JULIAN, 2005;TOYOMIZU et al, 2005;ABIDIN & KHATOON, 2013). The climate change and heat waves events are responsible for severe production losses in broiler facilities NÄÄS et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of a simulated heat wave in thermal and aerial environment broiler-rearing environment

et al. 2016

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Global warming increases the occurrence of events such as extreme heat waves. Research on thermal and air conditions affecting broiler-rearing environment are important to evaluate the animal welfare under extreme heat aiming mitiga tion measures. This study aimed at evaluating the effect of a simulated heat wave, in a climatic chamber, on the thermal and air environment of 42-day-old broilers. One hundred and sixty broilers were housed and reared for 42 days in a climatic chamber; the animals were divided into eight pens. Heat wave simulation was performed on the 42 nd day, the period of great impact and data sampling. The analyzed variables were room and litter temperatures, relative humidity, concentrations of oxygen, carbon monoxide and ammonia at each pen. These variables were assessed each two hours, starting at 8 am, simulating a day heating up to 4 pm, when it is reached the maximum temperature. By the results, we concluded that increasing room temperatures promoted a proportional raise in litter temperatures, contributing to ammonia volatilization. In addition, oxygen concentrations decreased with increasing temperatures; and the carbon monoxide was only observed at temperatures above 27.0 °C, relative humidity higher than 88.4% and litter temperatures superior to 30.3 °C.KEYWORDS: ammonia, gas production, animal welfare, oxygen, litter temperature ONDA DE CALOR SIMULADA E SEU IMPACTO NO AMBIENTE TÉRMICO E AÉREO DE FRANGOS DE CORTE RESUMO:O aquecimento global aumenta a ocorrência de eventos extremos como as ondas de calor. Pesquisas sobre como as condições térmicas e aéreas afetam o ambiente de produção de frangos de corte são importantes para se avaliar o bem-estar animal sob condições extremas de calor, objetivando medidas mitigadoras. Este estudo pretende avaliar o efeito da simulação de ondas de calor em câmara climática, sobre o ambiente térmico e aéreo de frangos de corte com 42 dias de idade. 160 frangos foram alojados e criados, de 1 a 42 dias de idade, em câmara climática que foi dividida em oito baias. A simulação de onda de calor foi realizada no 42º dia de criação das aves, memento de maior impacto e da coleta dos dados. As variáveis foram coletadas em intervalos de duas horas a partir das 8 horas da manhã, simulando o aquecimento do dia até às 16 horas, horário de máxima, sendo coletados temperatura ambiente, temperatura da cama, umidade relativa do ar, concentrações de oxigênio, monóxido de carbono e amônia em cada baia, nos intervalos de duas em duas horas. Com os resultados obtidos na câmara climática, foi possível concluir que o aumento da temperatura ambiente ocasionou aumento na temperatura da cama, o que, consequentemente, contribuiu para o aumento da volatilização da amônia. A concentração de oxigênio foi reduzida enquanto a temperatura foi aumentada. A presença de monóxido de carbono foi observada quando a temperatura ambiente estava acima de 27,0 ºC, a umidade relativa superior a 88,4% e a temperatura da cama estava superior a 30,3 ºC. PALAVRAS-CHAVE:amônia, bem-estar an...

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Section: Introductionmentioning

confidence: 99%

Effect of a simulated heat wave in thermal and aerial environment broiler-rearing environment

et al. 2016

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“…High temperatures have detrimental effects on chicken feed intake and reproductive performance, causing major economic damage to the food industry (Meehl and Tebaldi, 2004;Abidin and Khatoon, 2013;Al-Aqil et al, 2013). Heat shock factor (HSF) protein expression is induced during the signaling response to heat shock.…”

Section: Introductionmentioning

confidence: 99%

Alteration of HSF3 and HSP70 mRNA expression in the tissues of two chicken breeds during acute heat stress

Zhang¹,

Kong²,

Zhang³

et al. 2014

Genet. Mol. Res.

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ABSTRACT. This study aimed to estimate changes in HSF3 and HSP70 mRNA expression in stress-sensitive tissues of 2 chicken breeds during acute heat stress. Lingshan chickens (LSC) and White Recessive Rock (WRR) (24 chickens of each breed) were randomly divided into 4 groups (0, 2, 3, and 6 h of heat treatment). With increasing heat treatment time, both HSF3 and HSP70 expression first declined and then showed a significant increase in both breeds. However, HSP70 expression decreased in the heart following 6 h of heat treatment, whereas HSF3 expression continued to increase. After 2 h of heat treatment, HSF3 expression was significantly higher in the brain and leg muscle of LSC compared to WRR (P < 0.05, P < 0.01). In comparison, HSP70 expression was significantly higher in the liver and leg muscle of WRR compared to LSC (P < 0.01, P < 0.05). After 3 h of heat treatment, HSF3 expression was significantly higher in the brain and leg muscle of LSC compared to WRR (P < 0.01). In comparison, HSP70 expression was significantly higher in the liver and heart of LSC compared to WRR (P < 0.01). These results indicate that the expression of HSF3 and HSP70 mRNA in LSC and WRR exhibit species-specific and tissue-specific differences during heat treatment.

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“…Heat stress results in behavioral, physiological, and immunological changes in poultry, which has a negative impact on its health, feed consumption, productivity, and quality of products [1,2]. This inevitably results in significant financial losses.…”

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confidence: 99%

“…Under the high temperature conditions, feed intake is reduced [2], the acid-base balance in the body changes [4,5], the secretion and activity of endogenous enzymes decreases [6], the intestine absorbing capacity is broken [7], the passage of feed through the gastrointestinal tract is accelerated due to the 3-5 times increased water intake [8,9]. As a result, a deficiency of nutrients, vitamins (especially C and E), and some macro-and trace elements arises in the bird's body [10,11].…”

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confidence: 99%

HEAT STRESS IN POULTRY. II. METHODS AND TECHNIQUES FOR PREVENTION AND ALLEVIATION (review)

Фисинин¹,

Kavtarashvili²

2015

S-h. biol.

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A b s t r a c tAn adverse effect of heat stress in poultry depends on both the external factors such as diet, water supply, rearing technology, birds' population density, air humidity and flow rate, etc., and the internal factors, particularly, poultry species and breed specificity, physiological conditions, etc. Herein, the approaches to prevention and alleviation of heat stress in poultry are summarized and discussed. Different strategies were proposed for lowering of body heat production and for better heat dissipation, thus maintaining productivity and product quality and minimizing losses for poultry farms. These strategies include the increase in energetic level of a diet in accordance with decrease in feed consumption due to stress (N.J. Daghir, 2009) and inclusion of higher (up to 4-5 %) levels of fat (B.L. Red, 1981; N. Usayran et al., 2001; A.A. Ghazalah et al., 2008); decrease by 2-4 % of dietary crude protein (Q.U. Zaman et al., 2008) and carbohydrate levels (metabolization of fat produces less heat than protein and carbohydrates) (N

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Heat stress in poultry and the beneficial effects of ascorbic acid (vitamin C) supplementation during periods of heat stress

Cited by 86 publications

References 98 publications

Effect of a simulated heat wave in thermal and aerial environment broiler-rearing environment

Effect of a simulated heat wave in thermal and aerial environment broiler-rearing environment

Alteration of HSF3 and HSP70 mRNA expression in the tissues of two chicken breeds during acute heat stress

HEAT STRESS IN POULTRY. II. METHODS AND TECHNIQUES FOR PREVENTION AND ALLEVIATION (review)

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