Effect of cyclic heat stress on thyroidal hormones, thyroid histology, and performance of two broiler strains

Bueno, João Paulo Rodrigues; Gotardo, Luciana Ruggeri Menezes; Santos, Aline Monteiro dos; Litz, Fernanda Heloísa; O, Olivieri; Alves, Rosana; Moraes, Cíntia Amaral; Nascimento, Mara Regina Bueno de Mattos

doi:10.1007/s00484-020-01886-0

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…Reports of Abreu and Abreu [ 3 ] and Bueno et al. [ 4 ] stated that the actual temperature varies from 32°C to 35°C (1st week), 23°C–32°C (2nd and 5th week), and 20°C (6th week) and relative humidity ranging from 60%–70%, which are difficult conditions to keep in the tropics. However, heat stress is one of the most deleterious contentions in tropical and subtropical corridors of the world, which causes substantive economic forfeitures in poultry production [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Poultry birds enjoys to be raised under situations of minor energy requirement for thermoregulation purposes and ultimate net energy available for production goal, otherwise poultry will be under stress [2]. Reports of Abreu and Abreu [3] and Bueno et al [4] stated that the actual temperature varies from 32℃ to 35℃ (1st week), 23℃-32℃ (2nd and 5th week), and 20℃ (6th week) and relative humidity ranging from 60%-70%, which are difficult conditions to keep in the tropics. However, heat stress is one of the most deleterious contentions in tropical and subtropical corridors of the world, which causes substantive economic forfeitures in poultry production [5].…”

Section: Introductionmentioning

confidence: 99%

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Performance, hemato-biochemical indices and oxidative stress markers of broiler chicken fed phytogenic during heat stress condition

Jimoh¹,

Daramola²,

Okin-Aminu³

et al. 2022

J Anim Sci Technol

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Thermal stress is a tremendous health predicament encountered by poultry farmers with adverse effects on the performance, product stature, health condition, survival, and overall welfare of poultry birds, and so requires urgent dietary user-friendly strategy to curb. This study was conducted with 200-day old broilers for the purpose of investigating the potential of phytogenics in refining the negative effects of heat stress on broiler chicken. Moringa, Phyllanthus and mistletoe leaves were processed as phytogenic supplements and incorporated into standard ration for broilers as treatments B1 (control), B2, B3 and B4 diet during the peak of thermal discomfort in humid tropics. Growth and carcass indices were monitored in a 49-day trial and blood samples were harvested at the end of the ordeal period to assess haematology, serum biochemical and oxidative stress markers with the use of standard procedures. The results obtained showed that the prevailing environmental condition in the study site indicated that the birds were exposed to heat stress. Birds fed on moringa and mistletoe supplements had higher performance index than birds without supplementation during heat stress condition, while birds fed on mistletoe supplement had the highest survival rate across the treatments. The liveweight, slaughter weight, dressed weight and eviscerated weight of heat stressed birds fed on moringa, phyllanthus and mistletoe supplements were significantly higher than birds on control treatment. Heterophyl/lymphocyte ratio of heat stressed birds without supplement were higher than birds on phytogenic supplements, with least values recorded in phyllanthus and mistletoe fed birds. Birds on phytogenic supplement tend to have lower cholesterol profile, lipid peroxidation and better antioxidant profile than birds on control treatment during heat stress conditions. Mistletoe supplementation in broiler ration enhances the survival rate, as well as promotes growth indices better among the phytogenic supplements. However, phytogenic supplements did ameliorate the negative effects of thermal discomfort on performance, physiological and oxidative stress in heat-stressed broiler chicken.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance, hemato-biochemical indices and oxidative stress markers of broiler chicken fed phytogenic during heat stress condition

Jimoh¹,

Daramola²,

Okin-Aminu³

et al. 2022

J Anim Sci Technol

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“…Therefore, any disruption of thyroid activity can impair performance [10]. In fact, thyroid hormones are considered to have major roles in metabolic processes (catabolism and anabolism), thereby influencing nutritional efficiency, catabolism, anabolic synthesis, and thermogenesis [13].…”

Section: High Stocking Density and Heat Stressmentioning

confidence: 99%

Deleterious Effects of Heat Stress on Poultry Production: Unveiling the Benefits of Betaine and Polyphenols

Shakeri

2022

Poultry

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Managing and controlling environmental temperature conditions using practical strategies is crucial to avoid the negative impacts of high environmental temperature, improving poultry production and welfare. High environmental temperature is one of the significant factors challenging poultry production during hot seasons or in tropical areas causing heat stress (HS). The detrimental effects of HS on broilers range from reduced growth performance to impaired poultry meat quality. HS impairs physiological responses caused by alteration in blood parameters, which could lead to impaired product quality by reducing moisture content and altering the production of antioxidant enzymes resulting in increased oxidative stress. There has been a focus on the use of nutritional supplements as a cost effective HS amelioration strategy, such as betaine and polyphenols. Supplementing broiler chicken’s diets with polyphenols aims to enhance growth performance via reduced levels of oxidative stress in tissues under HS conditions. Furthermore, using betaine as an osmolyte aims to protect tissues during osmotic stress conditions. The current review reveals that betaine and polyphenols are essential under crucial conditions such as HS to protect tissues from oxidative damage.

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“…"Poultry birds raised under good management and a thermoneutral zone of 18 O C -24 O C [2], requires little energy for thermoregulation and production goal, otherwise poultry will be under stress" [3]. Bueno et al [4] stated that "the actual temperature for broiler production varies from 32°C to 35°C (1st week), 23°C-32°C (2nd and 5th week), and 20°C (6th week) and relative humidity ranging from 60%-70%, which are difficult conditions to keep in the tropics". "Heat stress is one of the most pernicious factors in tropical and subtropical corridors of the world, which causes considerable economic losses in poultry production" [5].…”

Section: Introductionmentioning

confidence: 99%

Performance, Haematology and Serum Biochemical Status of two Strains of Broiler Chicken Fed Ficus thonningii Leaf Powder and Vitamin C Supplemented Diets

Osowe

Adu

Oloruntola

et al. 2023

AJBGMB

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Aims: To evaluate the effect of Ficus thonningii leaf powder (FTLP) and vitamin C supplemented diets on performance and haemato-biochemical status of two strains of broiler chickens. Methodology: Four hundred and eighty-one-day-old of Arbor acre (AB) and Cobb 500 (CO) broiler chicks were randomized to eight dietary treatments; diet 1 and 2 (Control), diets 3 and 4 (200mg/kg vitamin C inclusion), diets 5 and 6 (1% inclusion of FTLP) and (diets 7 and 8 (200mg/kg + 1% FTLP inclusions) for AB and CO strains respectively. Results: Result shows that feed intake, body weight gain and FCR were significant (P<0.05) at the starter phase. Interaction between strains and vitamin C were also significant (P<0.05) for body weight gain, FCR and feed intake. Vitamin C and FTLP supplementation significantly (P<0.05) improved the erythrocytes count while the MCV, MCH, WBC and lymphocytes of birds fed diets 2 and 6 were significantly (P<0.05) higher than the other diets. The dietary supplementation of vitamin C and FTLP shows that strain AB had a significantly (P<0.05) higher erythrocytes count than CO strain while the CO showed significant (P<0.05) improvement for the MCV and MCH. Vitamin C supplementation showed significant difference (P<0.05) for the RBC and the interaction of vitamin C and FTLP significantly (P<0.05) improved PCV, HB, MCV, MCH, WBC and lymphocytes. The interactive effect of vitamin C and FTLP significantly (P<0.05) improved the total protein and albumin. Cholesterol and creatinine levels were significantly (P<0.05) lowered by the inclusion of vitamin C and FTLP. Conclusion: As observed in this study, the inclusion of FTLP and vitamin C as a supplement in the diets of broiler chickens improved the performance, haematological indices and serum biochemical status of the tested birds.

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Effect of cyclic heat stress on thyroidal hormones, thyroid histology, and performance of two broiler strains

Cited by 9 publications

References 25 publications

Performance, hemato-biochemical indices and oxidative stress markers of broiler chicken fed phytogenic during heat stress condition

Performance, hemato-biochemical indices and oxidative stress markers of broiler chicken fed phytogenic during heat stress condition

Deleterious Effects of Heat Stress on Poultry Production: Unveiling the Benefits of Betaine and Polyphenols

Performance, Haematology and Serum Biochemical Status of two Strains of Broiler Chicken Fed Ficus thonningii Leaf Powder and Vitamin C Supplemented Diets

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