Effect of ascorbic acid in heat-stressed poultry

Khan, Rifat Ullah; Naz, Shabana; Nikousefat, Zahra; Selvaggi, Maria; Laudadio, Vito; Tufarelli, Vincenzo

doi:10.1017/s004393391200058x

Cited by 160 publications

(170 citation statements)

References 59 publications

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“…This because high environmental temperatures decrease the concentrations of vitamins and minerals in the blood serum, and increase their excretion (Khan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

<b>Heat stress and vitamin E in diets for broilers as a mitigating measure

Dalólio

Albino

Lima

et al. 2015

Acta Sci. Anim. Sci.

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ABSTRACT. This review aimed to identify the importance of vitamin E dietary supplementation to broilers subjected to heat stress in relation to metabolism, growth performance and quality of animal products and its effects on immune system. Vitamin E is the concentration of tocopherol and tocotrienol, which can be found in natural or synthetic form. This vitamin is essential for the integrity of reproductive, muscular, circulatory, nervous and immune systems of the animals. In order to reduce the harmful effects of high temperatures in poultry production, vitamin E supplementation is a viable alternative for the sector. Some studies indicate its potential antioxidant effect able to modulate inflammatory responses and physiological adjustments to mitigate the undesirable effects of exposure of broilers to high temperatures. Moreover, it has been found increased viability of animals due to the greater activation of the immune system, and improved quality of animal products given to the deposition in tissues with consequent nutritional enrichment of meat products.Keywords: antioxidant, performance, immunity, meat quality, supplementation.Estresse térmico por calor e vitamina E em rações para frangos de corte como medida atenuante RESUMO. Objetivou-se, com esta revisão, identificar a importância da suplementação de vitamina E às rações de frangos de corte submetidos a estresse por calor, em relação ao metabolismo, ao desempenho produtivo e à qualidade dos produtos de origem animal, bem como seus efeitos no sistema imune das aves. A vitamina E corresponde à concentração de tocoferol e de tocotrienol, podendo ser encontrada na forma natural ou sintética. É sabido que, essa vitamina, é essencial para a integridade reprodutiva, muscular, circulatória, nervosa e imunológica dos animais. Para reduzir os efeitos prejudiciais das altas temperaturas na produção avícola, a suplementação de vitamina E apresenta-se como alternativa viável para o setor. Alguns estudos indicam seu potencial efeito antioxidante capaz de modular respostas inflamatórias e ajustes fisiológicos para atenuar os efeitos indesejáveis da exposição das aves a elevadas temperaturas. Além disso, tem sido verificado aumento da viabilidade dos animais, pela maior ativação do sistema imune, e melhora na qualidade dos produtos de origem animal, devido à sua capacidade de deposição nos tecidos, com consequente enriquecimento nutricional dos produtos cárneos.Palavras chave: antioxidante, desempenho, imunidade, qualidade da carne, suplementação.

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“…This because high environmental temperatures decrease the concentrations of vitamins and minerals in the blood serum, and increase their excretion (Khan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

<b>Heat stress and vitamin E in diets for broilers as a mitigating measure

Dalólio

Albino

Lima

et al. 2015

Acta Sci. Anim. Sci.

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“…Although birds synthesise vitamin C in their body, however, its supplementation in the poultry diet has been recommended during stressful conditions (Khan et al 2012a). Vitamin E is also a very important antioxidant which protects the body against the oxidative stress.…”

Section: Introductionmentioning

confidence: 99%

Supplementation of vitamins, probiotics and proteins on oxidative stress, enzymes and hormones in post-moult male broiler breeders

et al. 2013

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This study was planned to investigate the comparative effect of vitamin E and C, probiotics, protein level and the combination of these treatments on body weight, serum total antioxidant capacity (TAC), total oxidant status (TOS), oxidative stress index (OSI), aspartate aminotransferase (AST), alanine aminotransferase (ALT), triiodothyronine (T 3 ), thyroxine (T 4 ), cortisol and some minerals in Zn-induced male broiler breeders. A total of 180 Hubbard male broiler breeders (65 weeks of age) were induced to moult. After moulting, the birds were randomly distributed into six groups. One group was fed vitamin E (100 IU/kg feed), second group was fed vitamin C (500 IU/kg feed), third group was fed probiotics (50 mg/L), fourth group was fed lower protein level (14 % crude protein) and the fifth group was fed the combination of the mentioned treatments. The sixth group served as control. The results revealed that serum TAC significantly increased (P<0.05) while TOS and OSI decreased (P<0.05) in the vitamin E fed group compared to the other treated groups. The analyses of the samples indicated that AST and ALT decreased significantly in the vitamin E supplemented group while T 3 and T 4 increased significantly as a result of this treatment. Cortisol concentration decreased significantly in the vitamin E fed group. Serum Mg increased significantly in the vitamin E supplemented group. The results indicated that the physiological biochemistry disrupted in male breeders as a consequence of moulting could be compensated by feeding vitamin E.

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“…According to Mujahid & Furuse (2009), cold stress adversely affects the FI of chicks because of its impact on the digestive system and body development. In a commercial broiler facility where lower t db may exist in parts of the house, BWG differences will cause increased nonuniformity of the flock and, consequently, financial losses (Khan et al, 2011(Khan et al, , 2012.…”

Section: Resultsmentioning

confidence: 99%

Performance of chicks subjected to thermal challenge

Ferraz

Yanagi

Lima

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of thermal challenge at different intensities and durations on the production responses of 3 to 21-day-old broiler chickens. Two hundred and ten Cobb chicks were subjected to dry-bulb temperatures (t db ) of 27, 30, 33, or 36°C for the duration of 0, 1, 2, 3, or 4 days from the second day of life onwards. The experiment was carried out in four identical environmentallycontrolled wind tunnels. Data on body mass (BM), feed intake (FI), and water intake (WI), all in grams, were monitored daily; and body weight gain (BWG), in grams, and feed conversion (FC) were also calculated. The effect of duration was not statistically significant. Empirical models were adjusted to relate BM, FI, and WI with t db and bird age. The performance of chicks at 21 days of age was analyzed using the BM, FI, WI, BWG, and FC values. Overall, the development of chicks at 33 and 36°C was better than that of those subjected to the lower t db of 30 and 27°C. The exposure of chicks to cold thermal challenge in early life can have a carry-over negative effect on their production performance up to 21 days of age.Index terms: air temperature, broiler, carry-over effect, production responses, thermal stress. Desempenho de pintinhos submetidos a estresse térmicoResumo -O objetivo deste trabalho foi avaliar o efeito do estresse térmico em diferentes intensidades e durações sobre as respostas produtivas de frangos de corte de 3 a 21 dias de idade. Duzentos e dez pintinhos Cobb foram submetidos às temperaturas do bulbo seco (t bs ) de 27, 30, 33 ou 36°C durante 0, 1, 2, 3 ou 4 dias, a partir do segundo dia de vida. O experimento foi conduzido em quatro túneis de vento climatizados idênticos. Dados de massa corporal (MC), consumo de ração (CR) e consumo de água (CAg), todos em gramas, foram coletados diariamente; e ganho de massa corporal (GMC), em gramas, e conversão alimentar (CA) também foram calculados. O efeito da duração não foi estatisticamente significativo. Modelos empíricos foram ajustados para estimar MC, CR e CAg em função da t bs e da idade das aves. O desempenho dos pintinhos aos 21 dias de idade foi analisado a partir dos valores de MC, CR, CAg, GMC e CA. Em geral, o desenvolvimento de pintinhos a 33 e 36°C foi melhor que o dos submetidos às menores t bs , de 30 e 27°C. A exposição de pintos de corte ao frio nos primeiros dias de vida pode causar efeito residual em suas respostas produtivas até 21 dias de idade.Termos para indexação: temperatura do ar, frango, efeito residual, respostas produtivas, estresse térmico.

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Effect of ascorbic acid in heat-stressed poultry

Cited by 160 publications

References 59 publications

<b>Heat stress and vitamin E in diets for broilers as a mitigating measure

<b>Heat stress and vitamin E in diets for broilers as a mitigating measure

Supplementation of vitamins, probiotics and proteins on oxidative stress, enzymes and hormones in post-moult male broiler breeders

Performance of chicks subjected to thermal challenge

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