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| Colet,S; Garcia,RG; Almeida Paz,ICL; Caldara,FR; Borille,R; Royer,AFB; Nääs,IA; Sgavioli,S. |
| ABSTRACTVitamin D is added to broiler diets to supply its physiological requirement for bone formation. The fast growth rate of modern broilers is often associated with poor bone formation. Increasing vitamin D supplementation levels and the use of more available sources have applied to try to prevent leg problems, to increase carcass yield, and to improve the performance of broilers. The present study evaluated three vitamin D supplementation levels (1) 3,500 IU (control); (2) control + 1,954 IU of 25-hydroxycholecalciferol; and (3) control + 3,500 IU of vitamin D in broiler diets supplied up to 21 days of age. The objective was to investigate if the vitamin D levels above the recommendations could reduce leg problems in broilers. In this experiment, a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gait score; Tibial dyschondroplasia; Valgus; Varus; Pododermatitis.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300325 |
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| Almeida Paz,ICL; Mendes,AA; Takita,TS; Vulcano,LC; Guerra,PC; Wechsler,FS; Garcia,RG; Takahashi,SE; Moreira,J; Pelícia,K; Komiyama,CM; Quinteiro,RR. |
| This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, SP, Brazil, with the objective of evaluating the efficacy of four techniques in the assessment of tibial dyschondroplasia lesions in broiler chickens. Four hundred Cobb male chicks were reared from 1 to 39 days of age. At 39 days, forty birds were selected and tibial dyschondroplasia status was assessed by four different techniques: evaluation using the lixiscope, macroscopic examination, histological examination and bone mineral density assessment using optical radiographic densitometry. The efficacy of each technique to assess dyschondroplasia lesions in the tibial growth plate was determined in comparison to histology, which was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Histology; Lixiscope; Macroscopic lesions; Optical radiographic densitometry; Tibial dyschondroplasia. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100005 |
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| Mendes,AS; Paixão,SJ; Sikorski,RR; Bonamigo,DV; Morello,MG; Ponzoni,RAR. |
| ABSTRACT Locomotion problems in broiler chickens can cause economic losses of up to 40% of the total revenues due to carcass condemnation and downgrading at processing. Leg disorders, such as femoral lesions, tibial dyschondroplasia, and spondylolisthesis, substantially impact the welfare of chickens as these disorders can prevent birds from reaching the feeders and drinkers, thus reducing feed and water intake. The most important issues related to broiler welfare reported in the last two decades are their growing sensitivity to metabolic and locomotion problems due to the fast growth rates and inactivity. Traditional methods for the determination of gait score include the manual scoring of animal behavior in the broiler house. Recorded video images can... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry production; Animal welfare; Femoral degeneration; Tibial dyschondroplasia. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400573 |
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| Kapakin,KAT; Kapakin,S; Imik,H; Gumus,R; Eser,G. |
| ABSTRACT Tibial dyschondroplasia (TD) is a skeletal disorder that occurs in the proximal metaphyses of tibiotarsus and sometimes tarsometatarsus, resulting in the development of avascularized and non-mineralized abnormal cartilage and causing significant economic loss. In this study, we aimed to show the histopathological changes and the relationship between the release of Heat-Shock Protein 27 (HSP-27) and oxidative DNA damage in broiler chickens with tibial dyschondroplasia, using histopathologic and immunohistochemical methods. Our study material consisted of totally 20 animals out of 42 days old 205 Ross 308 broiler chickens, 10 with TD lesions and 10 healthy control subjects. Tissue samples taken from animals performed necropsy was exposed to routine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HSP-27; Oxidative DNA damage; Tibial dyschondroplasia. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300328 |
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| Almeida,Paz ICL; Mendes,AA; Takita,TS; Vulcano,LC; Guerra,PC; Wescheler,FS; Garcia,RG. |
| This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, UNESP, Botucatu-SP, Brazil. The aim was to establish the normal values of bone mineral density (BMD) expressed in millimeters of aluminum in the tibia of broiler chickens using optical densitometry of radiographs. Four hundred Cobb male chicks were reared from 1 to 40 days of age, when 40 of them were selected and the right femur-tibia articulation was radiographed. Radiographs were taken with the X-ray equipment calibrated for 45 kvp and 3.2 mAs and a focus-to-film distance of 90 cm. An aluminum phantom ASTM-6063 consisting of 20 ladder steps with graduate density was placed parallel to the area to be radiographed and used as a densitometry reference standard. Radiograph images... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone; Bone mineral density; Optical radiographic densitometry; Tibial dyschondroplasia. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400003 |
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| Fernandes,Barbara Cristina da Silva; Martins,Márcia Regina Fernandes Boaro; Mendes,Ariel Antonio; Paz,Ibiara Correia de Lima Almeida; Komiyama,Claudia Marie; Milbradt,Elisane Lenita; Martins,Bruna Boaro. |
| The objective of this study was to evaluate the correlation between the ability to walk (gait score), incidence of femoral degeneration, tibial dyschondroplasia, valgus and varus deformity and leg symmetry of broiler chickens. Male chickens of the Cobb strain from a commercial poultry farm were utilized in this experiment. Fifty 35 and 42-day-old birds were evaluated according to the gait score and valgus or varus incidence. To assess the bilateral symmetry and the lesion score for femoral degeneration and tibial dyschondroplasia, broilers were weighed and euthanized for the removal of the femur and tibia of both legs. The lesion scores for femoral degeneration and tibial dyschondroplasia, varus or valgus deformity, bone symmetry and gait scores of the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Animal welfare; Bone symmetry; Femoral degeneration; Tibial dyschondroplasia. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800021 |
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