Behavior of Japanese quail in different air velocities and air temperatures

Santos, Tatiany Carvalho dos; Gates, Richard S.; Tinôco, Ilda de Fátima Ferreira; Zolnier, Sérgio; Baêta, Fernando da Costa

doi:10.1590/s0100-204x2017000500008

Cited by 22 publications

(18 citation statements)

References 21 publications

(23 reference statements)

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“…The optimal mixture of temperature and relative humidity gives birth to temperature-humidity-index (THI). It is the thermal comfort that enhances health of occupants in any conditioned space [32][33][34]. DEC, IEC, and MEC systems are performing better as compared to vapor compression systems in terms of saving primary energy and providing desired environmental conditions.…”

Section: Heat Stress and Poultry Air-conditioningmentioning

confidence: 99%

Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan)

et al. 2021

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Poultry are one of the most vulnerable species of its kind once the temperature-humidity nexus is explored. This is so because the broilers lack sweat glands as compared to humans and undergo panting process to mitigate their latent heat (moisture produced in the body) in the air. As a result, moisture production inside poultry house needs to be maintained to avoid any serious health and welfare complications. Several strategies such as compressor-based air-conditioning systems have been implemented worldwide to attenuate the heat stress in poultry, but these are not economical. Therefore, this study focuses on the development of low-cost and environmentally friendly improved evaporative cooling systems (DEC, IEC, MEC) from the viewpoint of heat stress in poultry houses. Thermodynamic analysis of these systems was carried out for the climatic conditions of Multan, Pakistan. The results appreciably controlled the environmental conditions which showed that for the months of April, May, and June, the decrease in temperature by direct evaporative cooling (DEC), indirect evaporative cooling (IEC), and Maisotsenko-Cycle evaporative cooling (MEC) systems is 7–10 °C, 5–6.5 °C, and 9.5–12 °C, respectively. In case of July, August, and September, the decrease in temperature by DEC, IEC, and MEC systems is 5.5–7 °C, 3.5–4.5 °C, and 7–7.5 °C, respectively. In addition, drop in temperature-humidity index (THI) values by DEC, IEC, and MEC is 3.5–9 °C, 3–7 °C, and 5.5–10 °C, respectively for all months. Optimum temperature and relative humidity conditions are determined for poultry birds and thereby, systems’ performance is thermodynamically evaluated for poultry farms from the viewpoint of THI, temperature-humidity-velocity index (THVI), and thermal exposure time (ET). From the analysis, it is concluded that MEC system performed relatively better than others due to its ability of dew-point cooling and achieved THI threshold limit with reasonable temperature and humidity indexes.

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Section: Heat Stress and Poultry Air-conditioningmentioning

confidence: 99%

Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan)

et al. 2021

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“…Quails raised under heat stress conditions modify their ingestive behaviour and trigger heat loss mechanisms, which can increase respiratory and heart rate, as well as cloacal and body surface temperature (Souza et al, 2013;Ribeiro et al, 2016;Rodrigues, Furtado, Costa, Nascimento, & Cardoso, 2016), affecting animal welfare (T. C. Santos, Gates, Tinôco, Zolnier, & Baêta, 2017) by compromising feed intake, assimilation, and metabolism, and causing a decrease in egg production, weight, and quality (Silva et al, 2017;Akdemir et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Physiological variables and egg quality from quails (Coturnix coturnix japonica) that received water with increasing levels of NaCl and under different temperatures

Rodrigues

Furtado

Rodrigues

et al. 2021

Semina: Ciênc. Agrár.

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The objective of this study was to evaluate the influence of water salinity and ambient temperature on the physiological variables and the quality of Japanese quail eggs (Coturnix coturnix japonica) in the laying phase. The quails received water with increasing levels of salinity (1.5, 3.0, 4.5 and 6.0 dS m-1) and were kept in climatic chambers under two different temperatures (24ºC and 32ºC). The design used was completely randomised, with a 2 x 4 factorial arrangement (temperatures and salinity levels), with six replicates of eight birds each. Data were submitted for analysis of variance and the means were compared by the Tukey test at 5%. There was no influence (P > 0.05) of water salinity levels on the physiological variables nor on the quality of the birds’ eggs. At 32oC there was an increase (P < 0.05) in respiratory rate, cloacal and body surface temperature of the birds, and a slight reduction (P < 0.05) in the weight of eggs, shells, and percentage of shell. For laying quails, water with salinity levels of up to 6.0 dSm-1 can be used and the birds can be raised in an environment with temperatures up to 32ºC.

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“…In this situation, physiological and behavioral changes occur in quails, which severely affect feed intake and cause structural changes in the intestinal epithelium, decreasing digestibility and absorption of nutrients, which interferes with weight gain and growth rate. Also, changes in blood pH, electrolyte balance, and immunosuppression due to high circulating cortisol levels are observed, raising the mortality rate (El-Kholy et al, 2017;Santos et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Incubation variables, performance, and morphometry of the duodenal mucosa of Japanese quails (Coturnixcoturnix japonica) submitted to different incubation temperatures and thermally challenged after hatching

Porto

Teófilo

Cavalcanti

et al. 2021

Arq. Bras. Med. Vet. Zootec.

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This study aimed to evaluate the effects of different temperatures on incubation variables, performance, and morphometry of the duodenal mucosa of Japanese quails (Coturnix coturnix japonica) submitted to chronic heat stress after hatching. We distributed 540 eggs in three incubators with a temperature of 37.8°C and 60% of humidity. From the 6th day of incubation until hatching, the temperatures were adjusted to (37.8°C, 38.5°C and 39.5°C). After hatching, quails were evaluated for the quality score, weighed, and distributed in a completely randomized design with three incubation temperatures (37.8, 38.5, and 39.5°C) and two ambient temperatures (stress and thermoneutral). At 10, 20, 30, and 40 days they were weighed to determine the live weight (g) and weight gain(g). To collect the duodenum and determine morphometric parameters, we euthanized four quails of each treatment. The data were analyzed, and the differences between the means determined by the Tukey test at 5%. The incubation temperature of 39.5°C provided lower hatching rate and the live weight at birth; however, from the 10th day of age, increased live weight, weight gain, and positively influenced the morphological parameters of the duodenal mucosa in situations of chronic stress.

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Behavior of Japanese quail in different air velocities and air temperatures

Cited by 22 publications

References 21 publications

Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan)

Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan)

Physiological variables and egg quality from quails (Coturnix coturnix japonica) that received water with increasing levels of NaCl and under different temperatures

Incubation variables, performance, and morphometry of the duodenal mucosa of Japanese quails (Coturnixcoturnix japonica) submitted to different incubation temperatures and thermally challenged after hatching

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