Productive performance and surface temperatures of Japanese quail exposed to different environment conditions at start of lay

Santos, Tatiany Carvalho dos; Gates, Richard S.; Tinôco, I. F. F.; Zolnier, Sérgio; Rocha, Keller Sullivan Oliveira; Freitas, L. C. S. R.

doi:10.3382/ps/pez068

Cited by 24 publications

(18 citation statements)

References 35 publications

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“…Poultry kept under thermal stress decreased feed intake by 8.42% (2.02g) and this is due to the need to reduce body heat (Tao et al, 1983;El-Tarabany, 2016;Santos et al, 2019). Quails may have difficulty exchanging heat with the environment due to the absence of sweat glands and because their bodies are covered with feathers.…”

Section: Resultsmentioning

confidence: 99%

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Magnesium in the water of Japanese quails kept under comfort zone and under thermal stress

Rodrigues

Furtado

Ribeiro

et al. 2022

Semina: Ciênc. Agrár.

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The objective was to evaluate the increasing levels of magnesium in the water supplied to laying quails (Coturnix coturnix japonica), kept in climatic chambers under thermoneutral temperature and thermal stress, on their performance and morphometry of their organs. The birds were distributed in a completely randomized design, 2x4 factorial arrangement, 2 temperatures (24 and 32 ºC) and 4 levels of magnesium in the water (50, 150, 250 and 350 mg L-1), with six replicates and eight birds per experimental unit. The data were subjected to analysis of variance and the means compared by the Tukey test at 5% probability level. The magnesium levels in the water did not affect (P > 0.05) the production performance and morphometry of the organs, with less water consumption at the magnesium level of 150 mg L-1, and birds kept at 32 °C had a reduction in feed consumption and feed conversion, but without affecting organ morphometry. Japanese quails in the production phase can consume water with magnesium levels up to 350 mg L-1 without having their production performance and morphometry of organs affected and raised in an environment with temperatures of up to 32 °C.

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Section: Resultsmentioning

confidence: 99%

“…Under thermal stress, the birds' demand for water can be high to meet nonevaporative caloric loss (Santos et al, 2019). However, water consumption was not affected by the increase in ambient temperature.…”

Section: Resultsmentioning

confidence: 99%

Magnesium in the water of Japanese quails kept under comfort zone and under thermal stress

Rodrigues

Furtado

Ribeiro

et al. 2022

Semina: Ciênc. Agrár.

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“…(2013) , in pullets by Hester et al. (2015) , in quails by Santos et al. (2019) , and by Mayes et al.…”

Section: Discussionmentioning

confidence: 99%

Effects of heat stress on pullet cloacal and body temperature

et al. 2020

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One measure of the thermal status of poultry is cloacal temperature measured with a cloacal thermometer; however, this method requires handling the bird, is invasive, and can be stressful. Infrared thermography is an alternative means for assessing bird thermal status. The objective of this study was to investigate the body temperature response of pullets subjected to different environmental air temperatures during the growing phase and to evaluate the relationship between the cloacal temperature and the body parts surface temperature. A total of 648 chicks (Lohmann LSL Lite) were used in 2 different phases, phase I (day 1 through 6 wk of age) and phase II (week 7 through 17). During phase I, chicks were reared at 1 of 3 different thermal environments: thermal comfort (35°C–19°C), mild heat stress (38°C–22°C), or mild cold stress (28°C–17°C). In phase II, pullets were randomly redistributed to 1 of 4 daytime temperature treatments: 20°C; 25°C; 30°C; and 35°C, all with night time temperature of 20°C. Cloacal temperature and body surface temperature for 8 parts (head, eye, comb, chest, back, wing, leg, head area, and body area) were obtained weekly from 4 to 2 birds per treatment, respectively, during phase II. There were no effects for the interactions between the 2 experimental phases for cloacal and body parts surface temperature. There was a strong correlation ( P < 0.001) between cloacal temperature and each body part temperature; cloacal temperature followed a quadratic response to environmental air temperature treatments. Pullets subjected to 35°C/20°C and 30°C/20°C had the highest body parts temperatures compared with the other 2 treatments ( P < 0.05). The leg surface temperature was greatest in all treatments, and the chest the lowest. Regression between cloacal and body parts temperature had a 95% predictive accuracy of better than 0.4°C, suggesting a useful alternative to direct cloacal temperature measurement.

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“…The air velocity treatments (0 and 2 m/s) were applied to the front of each pen, with the velocity decreasing from the front to the back of the pen, with each air velocity treatment applied to 4 pens in each environmental chamber. Further details of the air velocity arrangement are provided fully in Santos et al., 2019 . The AT treatments were based on estimated TC temperature for European quails, which varies with age ( Table 2 ).…”

Section: Methodsmentioning

confidence: 99%

“…The effect of air temperature ( AT ) on quail meat quality has not been well established yet. May et al., 2000 , Santos et al., 2017 , and Santos et al. (2019) observed that the effects of air velocity can be beneficial and alleviate heat stress in moderate to hot environments but can be detrimental under cold stress by excess convective cooling.…”

Section: Introductionmentioning

confidence: 99%

Meat quality traits of European quails reared under different conditions of temperature and air velocity

et al. 2020

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This study’s objective was to evaluate the influence of thermal environment and air velocity during the rearing phase on European quail meat quality traits. A total of 1,152 one-day-old European quail chicks were placed inside floor pens within environmental chambers. Each experimental period was approximately 5 wks, with birds slaughtered at 37 d of age. The experimental design consisted of a 2 × 4 factorial arrangement of treatments in completely randomized design with 2 air velocities (0 and 2 m/s) × 4 air temperatures (severe cold [ SC ], moderate cold, thermal comfort, and moderate heat [ MH ]). ANOVA, with air velocity and thermal environment as fixed effects, was performed to evaluate the effect of main factors and their interaction on meat quality traits, using the GLM procedure (SAS 9.4). Least square means of treatments effects were compared using Tukey’s test (α = 0.05). Lightness (L∗), redness (a∗), and yellowness (b∗), of quail meat were affected by thermal environment and air velocity ( P < 0.05). Initial and final L∗ values were greater for MH ( P < 0.05). Meat from birds subjected to 2 m/s air velocity had lower final L∗, but no velocity effect was noted for initial L∗. Quail meat from SC presented higher initial and final a∗ values compared with the other thermal environment groups ( P ≤ 0.001). Final a∗ was affected by air velocity ( P < 0.05). Initial and final b∗ values for meat from MH were greater, 13.8 and 15.2, respectively, differing from the other treatment environments ( P < 0.05). However, air velocity did not influence b∗ values ( P > 0.05). Interactions were not significant for pHu ( P = 0.993). Thawing loss and shear force were affected by treatments ( P < 0.05) but not ultimate pH, drip loss, or sarcomere length. This study demonstrates that thermal environments and air velocity affect quail meat quality traits. Further investigation is recommended to explore effects of air velocity and thermal environment on muscle proteolysis of quail meat quality.

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Productive performance and surface temperatures of Japanese quail exposed to different environment conditions at start of lay

Cited by 24 publications

References 35 publications

Magnesium in the water of Japanese quails kept under comfort zone and under thermal stress

Magnesium in the water of Japanese quails kept under comfort zone and under thermal stress

Effects of heat stress on pullet cloacal and body temperature

Meat quality traits of European quails reared under different conditions of temperature and air velocity

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