Espondilolistese em frango de corte no Brasil

Ribeiro, B.R.C.; Hoerr, Frederic J.; Santos, Renato L.

doi:10.1590/s0102-09352007000200039

Cited by 7 publications

(10 citation statements)

References 9 publications

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“…No effect was found on the litter, sex or genetic strain. These results differ from those found by Paixão et al (2007) who states that genetic strain may be an influential factor for the prevalence of ES.…”

Section: Resultscontrasting

confidence: 99%

“…It may be unilateral or bilateral, resulting in changes not only in the femoral head, but also in the femoral neck (Kealy, 1987). Results from this experiment are similar to those described in current literature (Paixão et al, 2007;Almeida Paz et al, 2009).…”

Section: Litter Quality and Broilers' Locomotionsupporting

confidence: 91%

“…The back was sawed along the spine in the midline with a handsaw. The birds were classified as having or not the deformity which presents deviation on the column (Paixão et al, 2007). After slaughter, the skin in the pectoral area was removed, and the region was visually analyzed for the identification of calluses and bruising.…”

Section: Assessment Of Femoral Degenerative Joint Lesions Tibial Dysmentioning

confidence: 99%

“…Brazilian regulation requires the assessment of broilers' welfare which involves the evaluation of the gait score and the examinations of other traits carried out on the slaughter line, such as the occurrence of foot-pad lesions, calluses breast, and bone fractures that can lead to disqualification of the flocks for the market. Femoral degenerative joint lesions together with femoral degenerative joint lesions, tibial dyschondroplasia and spondylolisthesis are the main causes of anomalies associated with lameness in broilers (Julian, 2005;Paixão et al, 2007;Nääs et al, 2009). Many symptoms arising from bone abnormalities are not clinically detectable, making difficult the quantification of the carcass damages.…”

Section: Introductionmentioning

confidence: 99%

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Locomotor Problems in Broilers Reared on New and Re-Used Litter

Paz

Garcia

Bernardi

et al. 2013

Italian Journal of Animal Science

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Two field trials were conducted to assess locomotor problems in broilers. Males and females broilers were used from two commercial strains reared on two different litter materials, new and re-used. In the first experiment (E1) rice husks and wood shavings were used as new litter, and in the second experiment (E2) the same litter was re-used. A batch of one-day-old chicks (2968) was reared randomly distributed in experimental pens, in a 2¥2¥2 factorial scheme (two genetic strains, two sexes and two litter materials). The same fodder and water were available to all birds ad libitum. Broilers locomotion problems were evaluated using the characteristics of gait score, incidence of valgus and varus, foot-pad lesions, degeneration, femoral, tibial dyschondroplasia, spondylolisthesis and breast calluses. The number of birds with high gait score was less than 30% in the two experiments. Males presented higher gait score (GS) (28.46% GS 1 and 2 compared to females, 20.98%); greater incidence of angular deformities (26.62% with valgus compared to 14.71% of the female); and femoral degenerative joint lesions (70.83% in average, compared to 55.16% of the female), and the correlation between these traits varied from 0.18 to 0.87 (P<0.05). There was an increase of foot-pad lesions in re-used litter leading to poor welfare. The use of rice husks in deep litter for broiler production might be a viable alternative of wood shavings.

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Section: Resultscontrasting

confidence: 99%

Section: Litter Quality and Broilers' Locomotionsupporting

confidence: 91%

Section: Assessment Of Femoral Degenerative Joint Lesions Tibial Dysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Locomotor Problems in Broilers Reared on New and Re-Used Litter

Paz

Garcia

Bernardi

et al. 2013

Italian Journal of Animal Science

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“…The vertebral column was longitudinally and medially cut, and classified as presenting disorders or not (Paixão et al, 2007).…”

Section: Evaluation Of Spondylolisthesismentioning

confidence: 99%

Selecting appropriate bedding to reduce locomotion problems in broilers

Paz

Garcia

Bernardi

et al. 2010

Rev. Bras. Cienc. Avic.

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Two experiments were carried out at the Poultry Sector of the School of Agrarian Sciences of the Federal University of Grande Dourados to evaluate the incidence of leg problems in broilers reared on two distinct types of bedding material: rice husks or wood shavings, both new and reused. In both trials, a randomized experimental design was applied in factorial arrangement (2 x 2 x 2) using two genetic strains (Cobb ® or Ross ® ); two sexes (male or female), and two litter materials (rice husks or wood shavings). In each trial 1080 one day pullets were reared equally divided in the treatments. The birds were placed in 4.5 m 2 boxes at a density of 10 birds m -2 . All birds were fed diets with equal nutritional density, and water was offered ad libitum. Feeds were divided in three phases: starter diet (1 -21 days), grower diet (22 -35 days), and finisher diet (36 -45 days). On day 45, fifty birds were randomly selected in each experiment to evaluate flock leg problems. The following parameters were analyzed: gait score, incidence of valgus and varus disorder, footpad dermatitis, femoral degeneration, tibial dyschondroplasia, and spondylolisthesis. Ambient temperature during rearing and litter caking and moisture content were recorded in four boxes per treatment. The analytical hierarchy process was used to organize the data into specific criteria. Several criteria, related to the attributes that were determinant according to the statistical analysis, were chosen in order to provide the best input to the process. Results indicated that new wood-shavings bedding was the most appropriate bedding to prevent locomotion problems, followed by new rice husks, reused wood shavings, and reused rice husks. However, when leg problems were associated to sex and genetic strain, male Ross birds strain presented less problems when reared on new rice husks, followed by new wood shavings

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