Early age cold conditioning in broiler chickens (Gallus domesticus): thermotolerance and growth responses

Shinder, D.; Luger, Dror; Rusal, M.; Rzepakovsky, V.; Bresler, Valentina; Yahav, S.

doi:10.1016/s0306-4565(02)00025-6

Cited by 49 publications

(47 citation statements)

References 34 publications

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“…The optimal temperature range for efficient production for broiler chickens over 4 weeks of age is 18 -21˚C (Aengwanich and Simaraks 2004). Shinder et al (2002) reported that short-term cold conditioning of chickens at an early age could induce an improvement either in thermotolerance during cold challenge or in performance of chickens exposed to an optimal environmental temperature.…”

Section: Poultry Ambient Temperature Stress Biochemical and Haematmentioning

confidence: 99%

Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus)

Blahová¹,

Dobšíková²,

Straková

et al. 2007

Acta Vet. Brno

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Blahová J., R. Dobšíková, E. Straková, P. Suchý: Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus). Acta Vet. Brno 2007, 76: S17-S23.The aim of this study was to assess the effect of low environmental temperature on growth, feed conversion, performance and selected biochemical and haematological indicators in broiler chickens. The decrease in air temperature since the 22 nd day of growth influenced significantly (p < 0.05) the level of total proteins, uric acid, phosphorus (in female broiler chickens), glucose (in male broiler chickens), haemoglobin (in female broiler chickens) and liver weight (in male broiler chickens). The temperature influenced significantly (p < 0.01) the level of triiodothyronine, haemoglobin (in male broiler chickens), haematocrit, abdominal fat content (in male broiler chickens), and heart weight too. The results have clearly confirmed that during growth, the decrease in environmental temperature (cold stress) negatively influenced some indices of performance and blood system in broiler chickens. Poultry, ambient temperature, stress, biochemical and haematological indicators, carcass efficiencyThe changes in environmental temperature below and above the thermal comfort zone have a negative effect on bird performance. Broiler chicken is a homeotherm that can live comfortably only in a relatively narrow zone of thermoneutrality. Both low and high temperatures act in a negative way. Low environmental temperature increases feed intake and decreases body weight gain and feed efficiency, thus negatively influencing the performance of broiler chickens. As Manning and Wyatt (1990) proved, broiler chickens adapted more easily to lower than to higher temperature. The optimal temperature range for efficient production for broiler chickens over 4 weeks of age is 18 -21˚C (Aengwanich and Simaraks 2004).Shinder et al. (2002) reported that short-term cold conditioning of chickens at an early age could induce an improvement either in thermotolerance during cold challenge or in performance of chickens exposed to an optimal environmental temperature.The increase in energy requirement as a result of exposure to low environmental temperature implies neccessary changes in the cardiovascular system to accommodate the energy needs. Thus, increases in haematocrit, haemoglobin concentration, blood volume, liver and heart muscle weight have been observed in broiler chickens and turkeys exposed to low environmental temperature (Yahav et al. 1996;Yahav 2002). Yahav et al. (1997) reported linear relationship between haematocrit and heart weight under constant temperature. The observed relationship indicates an adaptation of heart mass to the changes in work load associated with the changes in blood flow resistance. Cahaner and Leenstra (1992) documented that abdominal fat content was affected by environmental temperature. In cooler environment, more energy was dissipated as heat and thus fat accumulation was decreased.Plasma triiodothyronine (T 3 ...

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Section: Poultry Ambient Temperature Stress Biochemical and Haematmentioning

confidence: 99%

Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus)

Blahová¹,

Dobšíková²,

Straková

et al. 2007

Acta Vet. Brno

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“…However, due to the slower development of these organs relative to body growth rate, the capacity to balance body energy is compromised, particularly under extreme environment conditions, such as cold stress (Shahir et al, 2012;Shinder, 2002).…”

Section: Introductionmentioning

confidence: 99%

Cold-Induced Ascites in Broilers: Effects of Vitamin C and Coenzyme Q10

Nemati

Shahir

Harakinezhad

et al. 2017

Rev. Bras. Cienc. Avic.

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“…When a significant change occurred, often indicate the body weak ability to cope with cold stimuli, which is always varied within and between breeds (Shinder et al, 2002;Venditti et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Differential effects of two indigenous broilers exposed to cold stress and characters of follicle density and diameter

Chen¹,

Jiang²,

Geng³

2011

Italian Journal of Animal Science

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Indigenous chickens from various part of China, due to different feather characters, always performed differently when countered with cold stress. In this study, the effects of long term hypothermia on serum hormones (triiodothyronine, thyroxine and insulin) and activity of plasma enzymes (Alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltransferase, creatine kinase and lactic dehydrogenase) were studied in two indigenous broiler breeds, Huainan partridge (H) and Wenchang (W) chickens. Chickens in 20°C±2°C were compared with those subjected to moderate (15°C±2°C) and severe low temperature (10°C±2°C) for one week. Long-term hypothermia elevated plasma insulin and reduced T4 in W, decelerated insulin and increased T4 in H, while T3 did not change in the two breeds. Plasma enzymes AST, LDH and CK decreased in the two breeds and ALT only decreased in W exposed to cold stress. A significantly decreased body weight gain of H and no variations in W at low temperature were observed. However, a trend of decreased weight gain in W was observed when bred under low temperature condition. Follicle density and diameter were compared in the two breeds with back density in H significantly higher than W and diameter from back of H significantly smaller than W, while much larger than the latter at latero-abdominal part. We investigated the pattern of serum biological change, follicle diameter and density under cold stress condition in two indigenous broiler breeds from different areas of China to provide informative guidance for broiler production and indications in breeding of cold resistant breed.

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Early age cold conditioning in broiler chickens (Gallus domesticus): thermotolerance and growth responses

Cited by 49 publications

References 34 publications

Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus)

Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus)

Cold-Induced Ascites in Broilers: Effects of Vitamin C and Coenzyme Q10

Differential effects of two indigenous broilers exposed to cold stress and characters of follicle density and diameter

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