Ulcerative dermatitis dm broiler chickens: The effects of wet litter

Martland, MF

doi:10.1080/03079458508436237

Cited by 184 publications

(162 citation statements)

References 8 publications

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“…FPD develops rapidly in commercial flocks, where fully developed lesions occur by 3 weeks of age and from 6 weeks lesions simply increase in size (Mayne et al, 2006(Mayne et al, , 2007a. FPD is associated with redness, swelling and tissue necrosis, and may also be accompanied by pain (Martland, 1984(Martland, , 1985Mayne, 2005;Mayne et al, 2007b). Histopathologically, FPD is associated with massive increases in heterophils and macrophages and the loss of surface keratin (Mayne et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Foot pad dermatitis in growing turkeys is associated with cytokine and cellular changes indicative of an inflammatory immune response

et al. 2007

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Cell and cytokine responses during the development of foot pad dermatitis (FPD) in growing turkeys were studied in a model system. The objective was to evaluate the hypothesis that FPD is an allergic response to the environmental materials. Hybrid female turkeys at 28 days of age were exposed to wet litter for 48 h in a randomized block experiment. Expression levels of pro-inflammatory (interleukin (IL)-1b, IL-6, and CXCLi2) and signature Th1 (interferon-g), Th2 (IL-13) and Treg (IL-10) cytokines were measured in the foot pad tissues using real-time quantitative reverse transcriptase-polymerase chain reaction. Sections of foot pad tissue were stained for CD4' and CD8 ' T lymphocytes, B lymphocytes and macrophages using antibodies that specifically recognize the relevant cell types in the turkey. In the footpads of birds suffering from FPD, there were large fold increases in mRNA expression levels for the pro-inflammatory cytokines IL-1b ('635), IL-6 ('65), and CXCLi2 ('1924), and interferon-g ('32), whereas there was only a small increase in IL-13 mRNA ('2) and no change in IL-10 mRNA expression levels. CD4' and CD8 'T lymphocytes were present in the footpads of more than 90% of birds housed on wet litter compared with 25% or less on dry litter. Macrophages were observed in the footpads of approximately 85% of birds housed on wet litter compared with none in birds housed on dry litter. B lymphocytes were not detected in tissue from any of the birds. The data suggest that FPD is associated with a rapidly occurring inflammatory response, rather than a Th2-mediated allergic reaction.

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Section: Introductionmentioning

confidence: 99%

Foot pad dermatitis in growing turkeys is associated with cytokine and cellular changes indicative of an inflammatory immune response

et al. 2007

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“…These authors noted that the lesions were commonly referred to as "burns" by poultry workers and were associated with the presence of poor litter conditions during production. Similar lesions have been induced on the breast, hock and feet of turkeys (Martland, 1984) and broilers (Martland, 1985) when kept on wet litter.…”

Section: Introductionmentioning

confidence: 63%

“…It is clear from the analysis of the 1986/1987 database that there is a strong association between the occurrence of lesions and litter conditions in commercial flocks, as previously reported by Mcllroy et al (1987). It is accepted that wet, sticky litter can adhere to the breast and hock areas of birds resulting in the occurrence of contact dermatitis lesions (Mcllroy et al, 1987;Martland, 1985). This is not only observed when acute outbreaks of litter deterioration occur, but also in flocks where litter conditions deteriorate over the production period, this latter situation playing the biggest part in 1986/1987.…”

Section: Weathermentioning

confidence: 99%

Epidemiology of a contact dermatitis of broilers

Bruce¹,

McIlroy²,

Goodall³

1990

Avian Pathology

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SUMMARYA computerised information retrieval system of broiler production data has been used to study the epidemiology of contact dermatitis. The results of the analyses of broiler production data for the period 1984/85 were compared and contrasted with those for the period 1986/1987. The prevalence of breast lesions recorded in the latter period was 33% less than in the former. The prevalence of hock lesions was similar in both periods, but the degree of variation in the prevalence of lesions recorded by individual flocks was substantially reduced in 1986/87. Stocking density, average age of removal and the sex of birds all had an effect on the prevalence of the condition in broiler flocks in both time periods. The condition was more frequently recorded in flocks during the winter and a strong correlation with ambient relative humidity, obtained.

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“…Lesions of the hock and chest indicate bad conditions of keeping and movement of chickens. Poultry with difficult foot pads damages has a reduced growth because reduced food intake, which is due to pain that occurs during moving (Martland, 1984(Martland, , 1985. Different lighting programs lead to changes in the behavior and physical activity of broilers, and thus affect the welfare of the individuals (Škrbić et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of Lighting Period and Diets Density of Broiles on the Appearance of Lesions on the Foot Pads

Veljic¹,

Radonjić²,

Djokic³

2017

AgricultForest

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SUMMARYThe experiment involved 320 chickens of the line Cobb 500, both sexes, a cycle lasted 42 days. The floor area was covered with 10 cm of sawdust.The factors in this experiment were: 1) lighting program (constant light -CL, declining light -DL and then growing light -GL; and 2) density of diets at a constant energy-protein ratio (mixture of lower energy and protein -LEP and mixtures with a higher content of energy and protein -HEP).The chickens were divided into four groups in the form of two-factorial trial randomized block design (2x2) -four repetitions with 20 birds per repetition.Chickens in control group "LE'' were fed with standard starter and grower mixtures. Chickens in ,,HEP'' were fed with standard mixtures with addition of oil and soybean meal.Assessment of damage and the presence of lesions in all experiments were carried out on 21st, 28th, 35th and 42nd day of the cycle. Condition of foot pads of all chickens was assessed by three-step method for assessing dermatitis (Tomas et al. 2004). The applied lighting programs and diets density had no effect on the appearance of lesions on the foot pads.

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Ulcerative dermatitis dm broiler chickens: The effects of wet litter

Cited by 184 publications

References 8 publications

Foot pad dermatitis in growing turkeys is associated with cytokine and cellular changes indicative of an inflammatory immune response

Foot pad dermatitis in growing turkeys is associated with cytokine and cellular changes indicative of an inflammatory immune response

Epidemiology of a contact dermatitis of broilers

Effect of Lighting Period and Diets Density of Broiles on the Appearance of Lesions on the Foot Pads

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