Nutritional secondary hyperparathyroidism and osteodystrophia fibrosa in a Hodgson's hawk-eagle (<i>Spizaetus nipalensis</i>)

Toyoda, Takeshi; Ochiai, Kenji; Komatsu, Makoto; Kimura, Tatsuo; Umemura, Takashi

doi:10.1080/03079450310001636237

Cited by 15 publications

(2 citation statements)

References 7 publications

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“…In this case, impaired intestinal Ca absorption causes serum hypocalcemia, which in turn stimulates parathyroid glands to produce parathyroid hormone (Uhl, 2018). Secondary nutritional hyperparathyroidism continually increases bone resorption (Toyoda et al, 2004). In response, there is a replacement of the reabsorbed bone tissue with connective tissue, which characterizes generalized fibrous osteodystrophy (Olson et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Performance and bone health of broilers reared under artificial lighting and supplemented with different levels of vitamin D3

Lopes,

Vasconcelos,

Costa

et al. 2024

Revista Brasileira De Zootecnia

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This study aimed to investigate the effects of different levels of vitamin D 3 in broiler diets on performance and bone health. A total of 360 one-day old male Cobb500 ® broiler chicks were subjected to five treatments of different levels of vitamin D 3 in diets during two rearing phases: 0 IU/kg in both phases; 625 IU/kg in starter and 500 IU/kg in grower phase (25% of commercial inclusion); 1,250 IU/kg in starter and 1,000 IU/kg in grower phase (50% of commercial inclusion); 1,875 IU/kg in starter and 1,500 IU/kg in grower phase (75% of commercial inclusion); and 2,500 IU/kg in starter and 2,000 IU/kg in grower phase (100% of commercial inclusion). The traits studied weekly were feed intake, body weight, feed conversion, and viability. At 21 and 35 days of age, tibiae and femurs were removed, dissected, and evaluated for dry matter (DM), ash (%MM), calcium (%Ca), phosphorus (%P) and breaking strength. At 35 days of age, the bones were subjected to histopathological analysis for macroand microscopic morphological evaluation. Data were subjected to regression analysis, using α = 0.05. The variables of percentage %MM, %Ca, %P, and breaking strength experienced a positive linear effect up to the supplementation levels of approximately 25% of inclusion. The histopathological analysis found that the group that received the diet with 100% inclusion of vitamin D 3 presented lesions compatible with osteopetrosis and tibial dyschondroplasia. The observed results showed that for isonutritive diets, reduced levels of vitamin D 3 guaranteed performance during the evaluated period while the use of 100% of vitamin D 3 , as commonly used, can cause bone diseases and harm the welfare of broilers.

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Section: Discussionmentioning

confidence: 99%

Performance and bone health of broilers reared under artificial lighting and supplemented with different levels of vitamin D3

Lopes,

Vasconcelos,

Costa

et al. 2024

Revista Brasileira De Zootecnia

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“…These cells have been described in several cases of hyperparathyroidism in animals (ROTH; CAPEN, 1974), but the diagnosis of fibrous osteodystrophy can also be concluded without the presence of these cells. Therefore, factors such as the age of the bird, type of nutrient and duration of the deficiency are related to the proliferation of oxyphilic cells in avian hyperparathyroidism (TOYODA et al, 2004), since these cells are not normally found in birds, as they are in cattle, horses and humans (BANKS, 1992). …”

Section: Discussionmentioning

confidence: 99%

Metabolic bone diseases in a wild crab-eating hawk and a caboclo hawk in Paraiba

Guerra

Dias²,

Nascimento³

et al. 2018

AVB

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Article historyThe amount of research on metabolic bone diseases in commercial birds is considerable, however, there is a large gap in the knowledge of these diseases in wild birds. Aspects related to diet are the main factors that cause these diseases, such as: vitamin D deficiency, insufficient calcium intake, or imbalance of calcium and phosphorus in the diet, and problems in the absorption and metabolism of these compounds. This study reports two cases of bone diseases in birds of the order Accipitriformes, which are wild in the state of Paraíba, a crab-eating hawk with rickets, and a caboclo hawk with fibrous osteodystrophy. The diagnosis in both cases was based on macroscopic and microscopic findings. These reports are subsidies for the bird clinic of the order Accipitriformes and for the maintenance of these birds in nurseries and zoos. This study demonstrates the need for further studies to assess whether such cases can be used as indicators of environmental imbalance.

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Raptors

Jones¹,

Chitty²

2020

Exotic Animal Laboratory Diagnosis

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Nutritional secondary hyperparathyroidism and osteodystrophia fibrosa in a Hodgson's hawk-eagle (Spizaetus nipalensis)

Cited by 15 publications

References 7 publications

Performance and bone health of broilers reared under artificial lighting and supplemented with different levels of vitamin D3

Performance and bone health of broilers reared under artificial lighting and supplemented with different levels of vitamin D3

Metabolic bone diseases in a wild crab-eating hawk and a caboclo hawk in Paraiba

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