Haematological changes and plasma fluid dynamics in livestock during thermal stress, and response to mitigative measures

Habibu, B.; Dzenda, T.; Ayo, Joseph Olusegun; Yaqub, L.S.; Kawu, M.U.

doi:10.1016/j.livsci.2018.05.023

Cited by 39 publications

(28 citation statements)

References 102 publications

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“…A prevalent method in poultry production is to take advantage of the use of specific dietary supplements to achieve better poultry performance and feed conversion. Organic acids are generally considered as safe and have been approved by most member states of the European Union to be used as the feed additives in animal production (Habibu et al, 2018). Organic acids feeding is believed to have several beneficial effects such as improving feed conversion ratio (FCR), growth performance, enhancing mineral absorption, and speeding recovery from fatigue (Adil 2015;Kim et al, 2015).…”

Section: Effects Of Dietary Supplementation Of Fumaric Acid On Growthmentioning

confidence: 99%

“…He et al (2018) reported that continuous exposure to high ambient temperature overwhelms the homeostatic mechanisms in poultry, which may consequently compromise their growth performance, immunity, meat quality, and so on. High temperature significantly affects the physiology of broiler chicken and the central nervous system (CNS) via the hypothalamus and modulates most of the hematological and biochemical changes (Habibu et al, 2018). Specifically, the CNS modulates hematology…”

Section: Introductionmentioning

confidence: 99%

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Effects of Dietary Supplementation of Fumaric Acid on Growth Performance, Blood Hematological and Biochemical Profile of Broiler Chickens Exposed to Chronic Heat Stress

Ding

Xiong

et al. 2020

Braz. J. Poult. Sci.

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The aim of this study was to investigate the effects of dietary fumaric acid (FA) on the growth performance, hematological parameters and serum biochemistry in broilers under heat stress (HS) condition. A total number of 200 broilers were allocated to five treatments including the thermoneutral group, which was reared at standard ambient temperature and fed basal diet (CONT) and four heat-stressed groups, which were held at 32 ± 1ºC aged from 22 to 42 days and fed the basal diet supplemented with 0, 5, 10 and 15 g/kg FA, respectively. On day 42, body weight and feed intake were measured and feed conversion ratio was calculated. Blood was collected for the estimation of hematological and biochemical parameters. HS impaired the growth performance, but the addition of FA made a higher final body weight, average daily gain and European broiler index in comparison with HS group. The hemoglobin concentration and packed cell volume of HS broilers were significantly lower than those of the CONT birds. Birds administered 5g/kg FA diet had significantly (p<0.05) higher erythrocyte counts and hemoglobin concentration compared with birds in the HS group fed basal diet. Also, the HS group exhibited significant increase in glucose, triglyceride, total cholesterol, low-density lipoprotein cholesterol and creatinine when compared with CONT group. Dietary 5g/kg FA increased the serum total protein, albumin, globulin, total cholesterol, high-density lipoprotein cholesterol in comparison with the HS group. In conclusion, this study demonstrated the importance of using FA as feed additives to improve the growth performance of heatstressed broilers through haematological and biochemical regulation.

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Section: Effects Of Dietary Supplementation Of Fumaric Acid On Growthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Supplementation of Fumaric Acid on Growth Performance, Blood Hematological and Biochemical Profile of Broiler Chickens Exposed to Chronic Heat Stress

Ding

Xiong

et al. 2020

Braz. J. Poult. Sci.

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“…Dessa forma, o índice de temperatura e umidade (ITU) pode descrever mais adequadamente a sensação térmica que incide sobre os animais. Alguns estudos relataram reduções na ingestão diária de MS quando o ITU mínimo excede 57 e continua até atingir 72 (Holter et al, 1996;Ravagnolo et al, 2000). Na maioria dos momentos avaliados no estudo aqui descrito, as temperaturas e os dados de ITU se mantiveram altos, porém não foi possível inferir que esses fatores tenham sido determinantes para alterar o comportamento de ingesta de alimentos.…”

Section: Resultsunclassified

“…A determinação deste fator dentro do sistema produtivo pode ser verificada com base em avaliações dos parâmetros fisiológicos e bioquímicos como frequência cardíaca, frequência respiratória e análises séricas ou comportamentais (Casella et al, 2016;Ricci et al, 2017). Ao longo dos anos, os efeitos do estresse térmico devido a mudanças sazonais estão se tornando mais severos e frequentes (Habibu et al, 2018). Nesse contexto, diversos estudos têm demonstrado que um ambiente estressante pode gerar problemas respiratórios, hormonais, falta de apetite, aumento da incidência de doenças e, ainda diminuição da produção de carne (Sousa Júnior et al, 2008;Freitas et al, 2017;Furtado et al, 2020).…”

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Influência da restrição alimentar e do estresse térmico sobre parâmetros fisiológicos em ovinos

Halfen

Rahal

Barbosa

et al. 2020

Arq. Bras. Med. Vet. Zootec.

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RESUMO Objetivou-se avaliar as alterações fisiológicas de ovinos submetidos à restrição alimentar, expostos à radiação solar e à sombra. Dez borregas mestiças foram divididas igualmente em dois grupos: grupo radiação solar - GRS, animais expostos ao sol durante o dia; e grupo sombra - GS, animais alocados dentro de um galpão à sombra. Nos seis dias iniciais de experimento, os animais foram submetidos à restrição alimentar, com acesso apenas à água, já expostos ao sol ou à sombra. Nos seis dias subsequentes, foi ofertada dieta composta por ração e feno de alfafa (3%PV). Os parâmetros avaliados foram frequência respiratória (FR), temperatura retal (TR), β-hidroxibutirato (BHB), pH urinário, ingestão de matéria seca (IMS) e dados bioclimáticos (temperatura, umidade relativa do ar e índice de temperatura e umidade - ITU). A FR foi o parâmetro em que houve maior diferença significativa entre os grupos (p<0,05). O balanço energético negativo foi constatado em todos os animais (BHB>0,8mmol/L; pH<7,0). Ovelhas que sofrem restrição alimentar durante períodos de alta temperatura e umidade têm menor frequência respiratória e temperatura interna, independentemente de estar na sombra ou pleno sol. Porém, quando normalizado a oferta de alimento as ovelhas em pleno sol têm menor ingestão de matéria seca.

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“…The hematocrit, volume of extracellular fluid, blood and plasma can change between seasons [49,58], which probably affects the thermoregulatory responses of these animals. The decrease in hematocrit is due to the combined effect of the decreased hematopoiesis and hemodilution, as a consequence of the excessive water consumption [22,34].…”

Section: Hemogram Leukogram and Electrolytesmentioning

confidence: 99%

Thermoregulatory Responses of Heat Acclimatized Buffaloes to Simulated Heat Waves

Pereira

Vilela

Titto

et al. 2020

Animals

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Climate change is seen as a significant threat to the sustainability of livestock production systems in many parts of the world, particularly in tropical regions. Extreme meteorological events can result in catastrophic production and death of livestock. Heat waves in particular can push vulnerable animals beyond their survival threshold limits. However, there is little information about buffalo responses to sudden changes in the thermal environment, specifically the heat waves. This study aimed to quantify the thermoregulatory and blood biochemical responses of heat-acclimatized buffaloes to a simulated heat wave. The experiment was designed in a climatic chamber with two periods of 4 days each. Twelve heat acclimated buffalo heifers aged 18 months were used. The climatic chamber environment was set as follows: 4-day period (P1) simulating the same weather conditions of a summer in humid tropical climate used as a baseline, with daily cycle with Ta and RH at 27 ± 1 °C and 76% from 0600 h to 1900 h and 24 ± 1 °C and 80% from 1900 h to 0600 h, and 4-day period (P2), simulating a daily heat wave cycle, from 0600 h to 1900 h with Ta and RH kept at 36 °C and 78% and from 1900 h to 0600 h, 27 °C and 74%. All animals were subject to both treatments and data were analyzed by a repeated measure analysis of variance, with post-hoc pooling comparison performed by Tukey’s test. In P2, there was observed a significant increase in respiratory frequency (p < 0.01), found four times in P1. The sweating rates were quite high in both periods; still, there were significant increases in P2 compared to P1 (p < 0.01) (4931 and 3201 g/m2/h, respectively). A slight but significant increase in rectal temperature was observed during the day (p < 0.01), with a rising until 1900 h. The simulated heat wave in P2 did not affect the values of the erythrogram or leukogram, excluding the significant reduction in K+ (p < 0.05). The low heat storage and the subsequent fast and full recovery of the thermal balance late afternoon appear to be related to the high sweating rate values. The massive sweating rate emphasizes its relevance in the maintenance of buffalo homeothermy. The absence of changes in hematological parameters has revealed the considerable physiological resilience of buffaloes toward simulated heat waves.

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Haematological changes and plasma fluid dynamics in livestock during thermal stress, and response to mitigative measures

Cited by 39 publications

References 102 publications

Effects of Dietary Supplementation of Fumaric Acid on Growth Performance, Blood Hematological and Biochemical Profile of Broiler Chickens Exposed to Chronic Heat Stress

Effects of Dietary Supplementation of Fumaric Acid on Growth Performance, Blood Hematological and Biochemical Profile of Broiler Chickens Exposed to Chronic Heat Stress

Influência da restrição alimentar e do estresse térmico sobre parâmetros fisiológicos em ovinos

Thermoregulatory Responses of Heat Acclimatized Buffaloes to Simulated Heat Waves

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