Bioclimatic zoning for quails in the dry period in the state of Paraíba, Brazil

Silva, Valquiria Cordeiro da; Nascimento, Robson de Sousa; Neto, José Pinheiro Lopes; Miranda, Jaciara Ribeiro; Lopes, Felipe V.; Furtado, Dermeval A.

doi:10.1590/0034-737x202269020001

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Quail farming is a growing activity in arid and semi-arid regions, birds that are adapted to these regions, with small size, early sexual maturity and high productivity, where small spaces and little labour are used for their production (Khalilipour, Maheri;Shaddel, 2019;Rodrigues et al, 2021;Furtado et al, 2022). Quails reared in Brazil's semi-arid region during the hottest times of the day can become heat-stressed, requiring corrective measures in management and facilities to maintain their production (Silva et al, 2022;Silva et al, 2023) sendo esta região caracterizada por um balanço hídrico negativo resultante de uma precipitação média anual inferior a 800 mm, uma insolação de 2800 h/ano, uma temperatura média anual entre 23 e 28 °C, uma evaporação de 2000 mm/ano e uma humidade relativa do ar de cerca de 60% (Gois et al, 2017;Hussein, Abd El-Ati, & Saleem, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Infrared thermography technology is a non-invasive method used to indicate thermal biometric changes in animal metabolism, resulting from increased body temperature, surface temperature and changes in blood flow in response to environmental or physiological conditions, and is capable of detecting minimal variations in surface temperature and its gradientes (Souza Junior et al, 2013a;Vieira et al, 2022). When an animal becomes stressed, the hypothalamic-pituitary-adrenocortical axis is activated and heat is produced as a result of increased concentrations of catecholamines and cortisol, as well as blood puff responses, producing changes in the animal's heat production and loss (Silva et al, 2022). As the temperature rises, the birds' surface temperature increases, which can compromise their productive performance (Rodrigues et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Thermographic evaluation and sensible heat emission of quails (Coturnix coturnix japonica) kept at different temperatures

Moura,

Furtado,

Lopes Neto

et al. 2024

Rev. DELOS

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The aim of this research was to evaluate the surface temperature and sensible heat emission of Japanese quails kept in a climate chamber at different temperatures: 24.0, 27.0, 30.0 and 33.0°C. The surface temperature was obtained using thermographic images collected in five regions (head, wings, back, legs and crest), calculating the average surface temperature (ST), the gradient between ST and air temperature (AT) and heat emissions by convection and radiation. The experimental design used was entirely randomised, with four treatments and six replications. Surface temperature in all regions of the birds' bodies and ST rose as air temperature rose, and the gradient between ST and AT decreased as AT rose, a fact which can make it difficult for the animals to exchange sensible heat with the environment. The crest and feet had the highest and lowest ST values, respectively. The heat emitted by the birds through convection and radiation decreases as the ambient temperature rises, and of the total heat emitted, there was a predominance of convection.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermographic evaluation and sensible heat emission of quails (Coturnix coturnix japonica) kept at different temperatures

Moura,

Furtado,

Lopes Neto

et al. 2024

Rev. DELOS

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Phytase super-dosing modulates bone parameters and the concentration of the calcium epithelial carrier calbindin-D28k in quails (Coturnix coturnix japonica) under thermal stress

Ribeiro,

Silva,

Costa

et al. 2024

Anim. Prod. Sci.

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Context Thermal stress causes significant changes in the bioavailability of minerals, especially calcium, in laying birds, resulting in reduced egg production, and compromising egg quality. Therefore, it is necessary to use additives that provide better nutrient availability and minimise the negative effects caused by high temperatures. Aims This study aimed to evaluate the effects of super-dosing the diet of laying quails submitted to different temperatures with phytase on their bone parameters and on the epithelial calcium transporter calbindin-D28K positivity. Methods Seven hundred and twenty (720) Japanese quails in the production phase were distributed in a completely randomised design, in a 5 × 3 factorial design, with five supplementation levels of phytase (0, 500, 1000, 1500, and 3000 FTU/kg), and three temperatures (24°C, 30°C and 36°C), totalling 15 treatments, and six replications of eight birds each. The study began at the 8th week of age and continued for two cycles of 21 days, totalling 42 days of experiment. Bone parameters of the tibias and calbindin-D28K positivity were measured by immunohistochemistry. The data were submitted to variance, Tukey, and regression analyses. Key results At 24°C, birds had higher averages for proximal, medial, and distal diaphyses than did birds at 30°C and 36°C, and a greater breaking strength of the tibias than did those at 36°C. There was an increasing linear effect on the medial diaphysis and Seedor index in the tibias with an increasing phytase supplementation level. Calcium (Ca) in the tibias was higher in birds kept at 30°C at a supplementation level of up to 1000 FTU of phytase, than in the birds at 24°C and 36°C, equalling at 1500 FTU, and lower at 3000 FTU. There was a quadratic effect for phosphorus (P) and the Ca:P ratio in the tibias of quails submitted to increasing concentrations of phytase. Quails kept at 30°C showed greater anti-calbindin-D28K positivity in the duodenum and jejunum, when compared to animals subjected to temperatures of 24°C and 36°C. Phytase doses of 500 and 1000 FTU increased calbindin-D28K positivity in the duodenum of quails kept at 30°C. At a supplementation level of 1500 FTU, phytase provided greater eggshell thickness and greater calbindin-D28K positivity in the uterus of quails kept at 36°C. Conclusions Therefore, it is recommended to use 1500 FTU of phytase for Japanese quail exposed to high temperatures. Implications These findings suggest that dietary phytase super-dosing can help alleviate thermal stress in Japanese quail.

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Bioclimatic zoning for quails in the dry period in the state of Paraíba, Brazil

Cited by 2 publications

References 13 publications

Thermographic evaluation and sensible heat emission of quails (Coturnix coturnix japonica) kept at different temperatures

Thermographic evaluation and sensible heat emission of quails (Coturnix coturnix japonica) kept at different temperatures

Phytase super-dosing modulates bone parameters and the concentration of the calcium epithelial carrier calbindin-D28k in quails (Coturnix coturnix japonica) under thermal stress

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