Thermal profile of broilers infected by Eimeria tenella

Knı́žková, I.; Kunc, P.; Langrová, Iva; Vadlejch, Jaroslav; Jankovská, Ivana

doi:10.21611/qirt.2018.p3

Cited by 3 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No significant changes were recorded in the ocular and body surface during the experiment. The findings confirm that areas such as the bill and legs are favorable for measuring temperature variations in birds, and the fact that, since coccidiosis is an infection associated with the alteration of thermal homeostasis in birds, IRT is a reliable method when diagnosing this disease [ 139 ].…”

Section: Importance Of Irt In the Detection Of Sick Farm Animalsmentioning

confidence: 54%

“…infection is a decrease in temperature until hypothermia. A considerable decrease in temperature has been reported in birds infected with this protozoan before death [ 139 ]. It has been mentioned in numerous studies that body temperature is an influential variable to assess the state of health, and that the diagnosis of hypothermia can indicate instability in the body due to the course of some diseases.…”

Section: Importance Of Irt In the Detection Of Sick Farm Animalsmentioning

confidence: 99%

“…Because the body surface temperature in poultry infected with Eimeria spp. had not been well investigated, Knížková et al [ 139 ] assessed the changes in the thermal profile of a total of 42 broilers, free of coccidia and raised under controlled conditions. The authors divided the animals into three groups of 14 chickens each: the first two groups were inoculated with different amounts of pure strains of Eimeria tenella .…”

Section: Importance Of Irt In the Detection Of Sick Farm Animalsmentioning

confidence: 99%

See 2 more Smart Citations

Pathophysiology of Fever and Application of Infrared Thermography (IRT) in the Detection of Sick Domestic Animals: Recent Advances

Mota-Rojas

Wang

Titto

et al. 2021

Animals

View full text Add to dashboard Cite

Body-temperature elevations are multifactorial in origin and classified as hyperthermia as a rise in temperature due to alterations in the thermoregulation mechanism; the body loses the ability to control or regulate body temperature. In contrast, fever is a controlled state, since the body adjusts its stable temperature range to increase body temperature without losing the thermoregulation capacity. Fever refers to an acute phase response that confers a survival benefit on the body, raising core body temperature during infection or systemic inflammation processes to reduce the survival and proliferation of infectious pathogens by altering temperature, restriction of essential nutrients, and the activation of an immune reaction. However, once the infection resolves, the febrile response must be tightly regulated to avoid excessive tissue damage. During fever, neurological, endocrine, immunological, and metabolic changes occur that cause an increase in the stable temperature range, which allows the core body temperature to be considerably increased to stop the invasion of the offending agent and restrict the damage to the organism. There are different metabolic mechanisms of thermoregulation in the febrile response at the central and peripheral levels and cellular events. In response to cold or heat, the brain triggers thermoregulatory responses to coping with changes in body temperature, including autonomic effectors, such as thermogenesis, vasodilation, sweating, and behavioral mechanisms, that trigger flexible, goal-oriented actions, such as seeking heat or cold, nest building, and postural extension. Infrared thermography (IRT) has proven to be a reliable method for the early detection of pathologies affecting animal health and welfare that represent economic losses for farmers. However, the standardization of protocols for IRT use is still needed. Together with the complete understanding of the physiological and behavioral responses involved in the febrile process, it is possible to have timely solutions to serious problem situations. For this reason, the present review aims to analyze the new findings in pathophysiological mechanisms of the febrile process, the heat-loss mechanisms in an animal with fever, thermoregulation, the adverse effects of fever, and recent scientific findings related to different pathologies in farm animals through the use of IRT.

show abstract

Section: Importance Of Irt In the Detection Of Sick Farm Animalsmentioning

confidence: 54%

Section: Importance Of Irt In the Detection Of Sick Farm Animalsmentioning

confidence: 99%

Section: Importance Of Irt In the Detection Of Sick Farm Animalsmentioning

confidence: 99%

See 1 more Smart Citation

Pathophysiology of Fever and Application of Infrared Thermography (IRT) in the Detection of Sick Domestic Animals: Recent Advances

Mota-Rojas

Wang

Titto

et al. 2021

Animals

View full text Add to dashboard Cite

show abstract

“…At this time, the ChickenBoy ® does not have such capability. With suitable training, such an IR camera-enabled machine vision system might also detect outbreaks of some diseases that change the body (hence, surface) temperature, e.g., coccidiosis [27].…”

Section: Bird Surface Temperaturesmentioning

confidence: 99%

Low Airspeed Impacts on Tom Turkey Response to Moderate Heat Stress

Uemura,

Regmi,

Grimes

et al. 2023

AgriEngineering

View full text Add to dashboard Cite

Heat stress is a concern for turkeys in naturally ventilated houses. Chamber and room studies were used to assess heat stress at moderate temperatures (<25 °C) and low airspeeds on grown tom turkeys. In the chamber study, four ventilation rates × two temperatures (thermal comfort and thermal stress, 11 °C above thermal comfort) were applied to 13- to 19-week birds. Very small differences in airspeeds among the four treatments masked subcutaneous, cloacal, and infrared (IR) temperature differences at both temperatures. In the room study, four ventilation rates (0.07 m3·min−1·kg−1 or 100%, 75%, 50%, and 30% or Control) were applied to 21-week toms housed at <23 °C. The Control treatment had significantly higher whole-body and head temperatures vs. the other treatments. Only 100% had higher weight gain vs. 50%; hematology was unaffected by treatment. Higher ventilation rates reduced heat stress due to lower room temperatures, not airspeed differences, which were very low. The low-cost IR camera detected a heat stress difference ≥ 0.8 °C, corresponding to wind chill of 0.8 °C due to an airspeed of 0.8 m·s−1 vs. still air on the USDA broiler wind chill curve. Machine vision combined with IR thermography could alleviate real-time poultry heat stress.

show abstract