The Pathology and Aetiology of Turkey Syndrome ’65 (T.S.65)

Wise, D.R.; Boldero, Muriel K.; Thornton, G.A.

doi:10.1016/s0034-5288(18)33912-2

Cited by 26 publications

(4 citation statements)

References 12 publications

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“…The mechanism by which mycoplasma caused the chondrodystrophy within the present study is unclear. Similarities between the chondrodystrophies of dietary deficiencies and mycoplasmal infections (Wise et al, 1973), and the bilateral nature of the growth plate pathology in the present study, indicate that some mycoplasmal infections may systemically influence nutrient availability for endochondral bone growth.…”

Section: Discussionsupporting

confidence: 72%

The development of lameness and bone deformity in the broiler following experimental infection withMycoplasma gallisepticumorMycoplasma synoviae

et al. 1997

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Groups of eight 7-day-old Mycoplasma-free broiler chicks were inoculated with one of two strains of M. gallisepticum (MG/S6, MG/B31/85) or one of two strains of M. synoviae (MS/B31/88 and MS/B94/91) into the left hock joint. Controls were similarly inoculated with sterile mycoplasma broth. The birds were assessed at 2, 3, 4 and 5 weeks of age (1, 2, 3 and 4 weeks post-injection) for lameness and joint and limb lesions. At 5 weeks of age they were killed and examined for gross skeletal abnormalities and microscopic lesions of both hock joints. The in-contact controls showed no joint swelling or lameness. The mycoplasma did not apparently spread to cause gross pathology in the joints of in-contact control birds, or to other joints in a bird injected with mycoplasma. Each mycoplasma strain caused specific pathologies manifest as varying degrees of lameness, left hock joint swelling, bone deformity and differences in the severity of articular cartilage and chondrodystrophic growth plate pathology. Shortening and bowing of the right tibiotarsus in the birds injected with mycoplasma indicated unilateral increased limb loading contributing to bone deformity. Chondrodystrophy seen with three mycoplasmal strains may have contributed to bone deformity in these birds. Lameness appeared to be a consequence of either joint swelling and/or bone deformity resulting in mechanical dysfunction. The role of joint pain in the lameness was not determined.

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Section: Discussionsupporting

confidence: 72%

The development of lameness and bone deformity in the broiler following experimental infection withMycoplasma gallisepticumorMycoplasma synoviae

et al. 1997

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“…The causal agent was eventually shown to be M . meleagridis following the independent observations of Yamamoto (1978) in America, Wise et al (1973) at Cambridge and Bigland and Jordan (1974) working in the USA and at Liverpool. Recently Dr Janet Bradbury at Liverpool has shown that a similar condition may be caused, experimentally, by M. iowae in turkey poults (Bradbury and Ideris, 1982).…”

Section: Route Of Infectionmentioning

confidence: 90%

Gordon Memorial Lecture: People, Poultry and Pathogenic Mycoplasmas

Jordan

1985

World's Poultry Science Journal

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“…Most of problems are seen in young birds: 10–25% of young turkeys under 15–16 weeks can show M. meleagridis ‐associated air sacculitis; 5–10% may show M. meleagridis ‐associated skeletal abnormalities such as wry necks, twisting and shortening of the tarso‐metatarsal bones (Wise et al., ; Chin, ). Reduction of growth rate is not always observed in M. meleagridis ‐infected flocks compared to M. meleagridis ‐free flocks (Wise et al., ; Carpenter et al., ).…”

Section: Assessmentmentioning

confidence: 99%

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): avian mycoplasmosis (Mycoplasma gallisepticum, M. meleagridis)

More¹,

Bøtner²,

Butterworth

et al. 2017

EFS2

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Avian mycoplasmosis (Mycoplasma gallisepticum, Mycoplasma meleagridis) has been assessed according to the criteria of the Animal Health Law (AHL), in particular criteria of Article 7 on disease profile and impacts, Article 5 on the eligibility of avian mycoplasmosis to be listed, Article 9 for the categorisation of avian mycoplasmosis according to disease prevention and control rules as in Annex IV and Article 8 on the list of animal species related to avian mycoplasmosis. The assessment has been performed following a methodology composed of information collection and compilation, expert judgement on each criterion at individual and, if no consensus was reached before, also at collective level. The output is composed of the categorical answer, and for the questions where no consensus was reached, the different supporting views are reported. Details on the methodology used for this assessment are explained in a separate opinion. According to the assessment performed, avian mycoplasmosis can be considered eligible to be listed for Union intervention as laid down in Article 5 (3) of the AHL. The disease would comply with the criteria as in Sections 4 and 5 of Annex IV of the AHL, for the application of the disease prevention and control rules referred to in points (d) and (e) of Article 9(1). The assessment here performed on compliance with the criteria as in Section 3 of Annex IV referred to in point (c) of Article 9(1) is inconclusive. The animal species to be listed for avian mycoplasmosis according to Article 8(3) criteria are mainly domestic and wild birds of the order Galliformes, and also Passeriformes for M. gallisepticum.

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The Pathology and Aetiology of Turkey Syndrome ’65 (T.S.65)

Cited by 26 publications

References 12 publications

The development of lameness and bone deformity in the broiler following experimental infection withMycoplasma gallisepticumorMycoplasma synoviae

The development of lameness and bone deformity in the broiler following experimental infection withMycoplasma gallisepticumorMycoplasma synoviae

Gordon Memorial Lecture: People, Poultry and Pathogenic Mycoplasmas

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): avian mycoplasmosis (Mycoplasma gallisepticum, M. meleagridis)

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