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Use of vitamin D to reduce lameness in broilers reared in harsh environments Rev. Bras. Ciênc. Avic.
Nääs,I de A; Baracho,M dos S; Bueno,LGF; Moura,DJ de; Vercelino,R do A; Salgado,DD.
In tropical poultry-producing countries, poultry houses usually have little environmental control. This study investigated the effect of dietary vitamin D on the incidence of leg abnormalities of a fast-growing broiler strain reared under harsh conditions. In this study, 300 one-day-old male broilers were distributed in two treatments with three replicates of 50 birds each. One group was fed a placebo and the other group was fed 25-hydroxycholecalciferol (25-OH-D3) in a soluble form. The environmental variables were weekly recorded during until birds were 49 days old. Birds were weekly gait scored, and their walking speed and vertical force while walking were assessed. Post-mortem examination was performed and skeletal lesions were assessed. Control birds...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feet force measurement; Leg abnormalities; Vitamin D supplement.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300002
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Assessing locomotion deficiency in broiler chicken Scientia Agricola
Nääs,Irenilza de Alencar; Paz,Ibiara Correia de Lima Almeida; Baracho,Marta dos Santos; Menezes,Adriana Gomes de; Lima,Karla Andrea Oliveira de; Bueno,Leda Gobbo de Freitas; Mollo Neto,Mario; Carvalho,Victor Ciaco de; Almeida,Ianê Correia de Lima; Souza,Anderson Luiz de.
Locomotion deficiencies in broiler production cause poor welfare and lead to change in drinking and feeding behavior with consequent loss in weight gain. This research aimed to assess locomotion deficiencies in broiler chicken by analyzing the vertical peak force on both feet during walk. A chamber was built with an inlet ramp, a horizontal walkway in the middle and an outlet ramp. In the walkway a thin mat with piezoelectric crystal sensors was placed to record the step vertical peak force of the feet while walking on the force platform. The measurement system consisted of a mat with electronic sensors and software that allowed real time recording of the forces and the processing and analysis of data. Footage was taken from two digital video cameras and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Poultry production; Gait scoring; Feet force measurement; Welfare.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200001
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