Locomotion problems of broiler chickens and its relationship with the gait score

Fernandes, Barbara Cristina da Silva; Martins, M. R. F. B.; Mendes, Ariel Antônio; Paz, Ibiara Correia de Lima Almeida; Komiyama, Cláudia Marie; Milbradt, Elisane Lenita; Martins, Bruna Boaro

doi:10.1590/s1516-35982012000800021

Cited by 21 publications

(23 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A total of 19.5% of broilers had VAL, and 7.6% presented VAR. The total percentage of angular deformities was lower than those found in the current literature (Fernandes et al, 2012). Almeida Paz et al (2010) indicated that nearly 32% of commercial broilers had angular leg deformities; however, no difference was found between sex and genetic strains.…”

Section: Resultscontrasting

confidence: 52%

“…Although visually there is a high percentage of broilers commonly walking on commercial farms, this might not mean that there are only sound birds in the flock (Fernandes et al, 2012). The difference found between the commercial strains and the indigenous chicken might be assigned to various factors, the most critical of which are the weight distribution and the way broilers gain weight during the grow-out period.…”

Section: Resultsmentioning

confidence: 99%

“…Fernandes et al (2012) indicated that 72% of broilers in commercial flocks had sound femur. The results of these authors are similar to the outcome of the present study including the commercial strains A and B. Almeida Paz et al (2010) found a lower frequency of occurrence varying from 15 to 19% of broilers with FD in the commercial flock.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Locomotion of commercial broilers and indigenous chickens

et al. 2016

Self Cite

View full text Add to dashboard Cite

-This study aimed to evaluate the relationship between the steadiness of broilers during the stance phase of locomotion, and the primary disorders of the locomotor system and gait. The experimental design was completely randomized, in a factorial arrangement (2 × 2 + 32), indicating two sexes and two genetic commercial strains, with five replications of 53 broilers each, and 32 (16 males and 16 females) indigenous chickens. Gait score and valgus and varus condition were assessed. Pictures of the birds were taken and evaluated. The broiler body was considered a spherical shape, and the centroid was calculated. From the geometric center of the body, a line was drawn perpendicularly to the sphere radius that formed an angle (ANG) with the other vertical line drawn from the centroid to the ground. The angle projected onto the ground was analyzed, and the body steadiness (EC) was estimated. At the 42nd day of growth, broilers were weighed to assess the body weight, the breast weight after slaughter, and the percentage of the breast (PB). Femoral degeneration, tibial dyschondroplasia, spondylolisthesis, and footpad dermatitis were evaluated. Fast-growing broilers presented a high prevalence of locomotor issues. The PB was not affected by sex or genetic strain. Males showed better ANG than the females, regardless of the genetic strain. More balanced EC was found in commercial broilers when compared with the indigenous chicken that stood slightly towards the back during the stance phase. A medium (in males) to high (in females) association between EC and ANG was found amongst broilers from the commercial strains in both males and females. The broilers from commercial strains presented more locomotor issues than the indigenous chicken. Commercial broiler strains show less locomotor soundness than indigenous chickens.

show abstract

Section: Resultscontrasting

confidence: 52%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Locomotion of commercial broilers and indigenous chickens

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Perhaps the limited mobility of the chickens is more related to problems of joint deviations (FERNANDES et al, 2010). The same authors found a significant difference for articulation deviations between right and left legs and the different degrees of gait score with the largest deviation of articulation related to gait score 2 (a bird having walking trouble), indicating that this deformity can be related to gait score and age.…”

Section: Resultsmentioning

confidence: 93%

Using data mining to identify factors that influence the degree of leg injuries in broilers

Cordeiro¹,

Baracho

Nääs

et al. 2012

Eng. Agríc.

View full text Add to dashboard Cite

Locomotor problems prevent the bird to move freely, jeopardizing the welfare and productivity, besides generating injuries on the legs of chickens. The objective of this study was to evaluate the influence of age, use of vitamin D, the asymmetry of limbs and gait score, the degree of leg injuries in broilers, using data mining. The analysis was performed on a data set obtained from a field experiment in which it was used two groups of birds with 30 birds each, a control group and one treated with vitamin D. It was evaluated the gait score, the asymmetry between the right and left toes, and the degree of leg injuries. The Weka ® software was used in data mining. In particular, C4.5 algorithm (also known as J48 in Weka environment) was used for the generation of a decision tree. The results showed that age is the factor that most influences the degree of leg injuries and that the data from assessments of gait score were not reliable to estimate leg weakness in broilers.KEYWORDS: decision tree, poultry, gait score. USO DE MINERAÇÃO DE DADOS PARA IDENTIFICAÇÃO DE FATORES QUE INFLUENCIAM O GRAU DE LESÕES DE PERNA EM FRANGOS DE CORTERESUMO: Problemas locomotores impedem a ave de se movimentar livremente, prejudicando o bem-estar e a produtividade, além de gerarem lesões nas pernas dos frangos. O objetivo deste trabalho foi avaliar a influência da idade, do uso de vitamina D, da assimetria de membros e do gait score, no grau de lesões de perna em frangos de corte, utilizando mineração de dados. A análise foi realizada em um conjunto de dados obtidos de um experimento de campo, em que foram utilizados dois grupos de aves com 30 aves cada, sendo um grupo-controle e outro tratado com vitamina D. Foram avaliados o gait score, a assimetria entre os dedos dos pés direito e esquerdo, e o grau de lesões de perna. O software Weka ® foi utilizado na mineração de dados. Em particular, o algoritmo C4.5 (também conhecido como J48 no ambiente Weka) foi utilizado para a geração de uma árvore de decisão. Os resultados mostraram que a idade é o fator que mais influencia o grau de lesões de perna e que os dados provenientes das avaliações de gait score não se mostraram confiáveis para estimar problemas locomotores em frangos de corte.

show abstract

“…When varus is present in one leg (negative angle), the bird tries to compensate this deviation by placing most of the body weight on the other leg, overloading the limb. Fernandes et al (2012) analyzed the correlation between gait score and valgus deformity and found that the displacement of the hock joint on its axis was a source of valgus deformity of both right and left legs. Therefore, leg disorders are not always related to femoral degeneration or tibial dyschondroplasia.…”

Section: Resultsmentioning

confidence: 99%

Bone Characteristics of Broilers Supplemented With Vitamin D

Colet

Garcia

Paz

et al. 2015

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

Vitamin 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 total of 1,296 oneday-old male and female Cobb® 500 broilers were used. A 2 x 3 factorial arrangement was applied, consisting of two sexes and three vitamin D levels. No difference was found between the levels of vitamin D (p > 0.05), the performance of males or females, the gait score, the valgus and varus incidence, the tibial dyschondroplasia incidence, the occurance of femoral degeneration, the bone colorimetric, and the carcass yield. Parts yield differences were found (p > 0.05), except for liver and intestine yields. We concluded that the lowest tested vitamin D level (3,500 IU per kilogram of feed) added to the diet was the best choice in terms of cost/ benefit to help minimizing leg problems in broilers.

show abstract

Locomotion problems of broiler chickens and its relationship with the gait score

Cited by 21 publications

References 9 publications

Locomotion of commercial broilers and indigenous chickens

Locomotion of commercial broilers and indigenous chickens

Using data mining to identify factors that influence the degree of leg injuries in broilers

Bone Characteristics of Broilers Supplemented With Vitamin D

Contact Info

Product

Resources

About