Precisão da técnica de absorciometria de raios-x de dupla energia na determinação da composição corporal em gatos

Borges, Naída Cristina; Vasconcellos, Ricardo Souza; Canola, Júlio Carlos; Paula, Francisco José Albuquerque de; Carciofí, Aulus Cavalieri; Pereira, Gener Tadeu

doi:10.1590/s0102-09352008000100037

Cited by 3 publications

(4 citation statements)

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“…Bedford, MA, USA). The precision of this method was determined [ 23 ] before this study and the coefficient of variation ranged from 3.2% to 4.3% for LM and from 7.7% to 10.9% for FM.…”

Section: Methodsmentioning

confidence: 99%

DXA, bioelectrical impedance, ultrasonography and biometry for the estimation of fat and lean mass in cats during weight loss

et al. 2012

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BackgroundFew equations have been developed in veterinary medicine compared to human medicine to predict body composition. The present study was done to evaluate the influence of weight loss on biometry (BIO), bioimpedance analysis (BIA) and ultrasonography (US) in cats, proposing equations to estimate fat (FM) and lean (LM) body mass, as compared to dual energy x-ray absorptiometry (DXA) as the referenced method. For this were used 16 gonadectomized obese cats (8 males and 8 females) in a weight loss program. DXA, BIO, BIA and US were performed in the obese state (T0; obese animals), after 10% of weight loss (T1) and after 20% of weight loss (T2). Stepwise regression was used to analyze the relationship between the dependent variables (FM, LM) determined by DXA and the independent variables obtained by BIO, BIA and US. The better models chosen were evaluated by a simple regression analysis and means predicted vs. determined by DXA were compared to verify the accuracy of the equations.ResultsThe independent variables determined by BIO, BIA and US that best correlated (p < 0.005) with the dependent variables (FM and LM) were BW (body weight), TC (thoracic circumference), PC (pelvic circumference), R (resistance) and SFLT (subcutaneous fat layer thickness). Using Mallows’Cp statistics, p value and r2, 19 equations were selected (12 for FM, 7 for LM); however, only 7 equations accurately predicted FM and one LM of cats.ConclusionsThe equations with two variables are better to use because they are effective and will be an alternative method to estimate body composition in the clinical routine. For estimated lean mass the equations using body weight associated with biometrics measures can be proposed. For estimated fat mass the equations using body weight associated with bioimpedance analysis can be proposed.

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“…Bedford, MA, USA). The precision of this method was determined [ 23 ] before this study and the coefficient of variation ranged from 3.2% to 4.3% for LM and from 7.7% to 10.9% for FM.…”

Section: Methodsmentioning

confidence: 99%

DXA, bioelectrical impedance, ultrasonography and biometry for the estimation of fat and lean mass in cats during weight loss

et al. 2012

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“…Por conta dos níveis de obesidade, técnicas de avaliação da composição corporal, sejam elas direta ou indireta são de extrema necessidade (Munday, 1994). Dentre as técnicas para medição, a mais utilizada é o IMCC (Índice de Massa Corporal Canina), pois reduziu a subjetividade da técnica, deixando o diagnóstico mais preciso (Muller & Maicon, 2008), enquanto o mais preciso para felinos é a técnica de absorciometria de raios-x de dupla energia (DEXA) (Borges et al, 2008;Buelund et al, 2011). Embora a DEXA seja o diagnóstico mais preciso, o seu alto custo e dificuldade na sua execução acabam tornando-o inviável, e por conta disto, utilizam-se métodos mais simples e baratos, mas não menos eficazes, como os métodos de Escore de Condição Corporal (ECC) e Índice Massa Corporal (IMC) (Butterwick, 2000;Kimberly et al, 2010).…”

Section: Descrição Da Doençaunclassified

Manejo nutricional para perros y gatos obesos

Silva

Júnior

Pereira

et al. 2019

Pubvet

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A obesidade é uma das desordens nutricionais mais frequentes em cães e gatos. A doença é caracterizada pelo acúmulo excessivo de gordura corporal de forma sistêmica, acarretando prejuízos secundários para a saúde do animal. Entre as causas da obesidade estão fatores como raça, espécie, pré-disposição genética, nutrição, castração, utilização de alguns medicamentos, mas também se deve à mudança no hábito de vida dessas espécies que ao passar do tempo foram tornando-se cada vez mais sedentárias. Por se tratar de um distúrbio nutricional, a adoção de um manejo nutricional é essencial no tratamento da doença, pois o balanceamento adequado de nutrientes como proteínas, lipídeos, carboidratos, fibras e a umidade do alimento, funcionará de forma reguladora no organismo do animal. Associado a um manejo nutricional adequado, a instituição de um programa de atividades físicas para reduzir o sedentarismo dos animais é de suma importância para auxiliar a perda de peso de maneira saudável e sem riscos à saúde do animal. Deste modo, pode-se afirmar que quando se fornece uma alimentação saudável e equilibrada a estes animais é a principal forma de controle da obesidade, portanto, é importante conhecer o papel de cada nutriente no tratamento, bem como a viabilidade da utilização de alimentos prontos disponíveis no mercado.Palavras-chave: animal de estimação, doença, nutrição, tratamento Nutritional management for obese dogs and catsAbstract. Obesity is one of the most frequent nutritional disorders in dogs and cats. The disease is characterized by excessive accumulation of body fat in a systemic way, leading to secondary damage to the animal's health. Among the causes of obesity are factors such as race, species, genetic predisposition, nutrition, castration, use of some medications, but it is also due to the change in the habit of life of these species that over time were becoming more and more sedentary. Because it is a nutritional disorder, the adoption of nutritional management is essential in the treatment of the disease, because the proper balance of nutrients such as proteins, lipids, carbohydrates, fibers and food moisture, will function in a regulatory way in the animal's organism. Associated with an adequate nutritional management, the institution of a program of physical activities to reduce the sedentarism of the animals is of paramount importance to help the weight loss in a healthy way and without risks to the health of the animal. Thus, it can be said that providing a healthy and balanced diet to these animals is the main way to control obesity, so it is important to know the role of each nutrient in the treatment, as well as the feasibility of using ready-made foods available in the Marketplace.

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“…Currently, new methods are used, such as computed tomography. However, dual-energy X-ray absorptiometry (DXA) is a noninvasive, fast, accurate technique that is widely used in humans and small and large domestic mammals alike, such as cats, rabbits, dogs, pigs, sheep, horses, ferrets, iguanas, and primates (Grier et al 1996;Turner 2001;Borges et al 2008).…”

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confidence: 99%

“…Ideally, precision and accuracy of a method should be tested before the actual experiment, so as to evaluate error for individual species (Rozenberg et al 1995;Borges et al 2008). The precision of the method, which is the capacity to obtain the same result in several repeated measurements, is assessed based on the coefficient of variation.…”

mentioning

confidence: 99%

Thoracic limb bone development inSotalia guianensis(Van Beneden 1864) along the coastline of Espírito Santo, Brazil

Azevedo¹,

Lima²,

Azevedo³

et al. 2015

JMAMMAL

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The skeleton is often the only remaining structure of the Guiana dolphin, Sotalia guianensis, after decomposition of carcasses. This study investigates the bone development of Guiana dolphins beached on the coastline of the state of Espírito Santo, Brazil. External measurements of 43 thoracic limbs were obtained. Internal structures (radius, ulna, and humerus) were also measured. Dual-energy X-ray absorptiometry (DXA) was used to evaluate bone mass. The variables concerning the thoracic limb were tested using the Akaike information criterion to scale the best growth model when correlated with age and by the allometric model when they were correlated with total body length. The efficacy of DXA was also tested. The Brody growth model (best fit) showed that the thoracic limb stopped growing around the age of 2, while total body length ceased to grow at the age of 5.5. The thoracic limb presented early growth (negative allometry) compared with total body length. The methodology used to measure bone mass was efficient when considering ash weight. No difference in bone density was observed between the right and the left forelimb (P > 0.05), male and female (P > 0.05), or between dolphins found in the 3 sites we monitored. The deposition of bone mass was high in the early stages of life, and stabilization occurred at around the age of 13. O esqueleto muitas vezes é a estrutura que resta da espécie Sotalia guianensis, boto-cinza, devido ao processo de decomposição em que as carcaças são encontradas. O objetivo do presente estudo é entender o desenvolvimento ósseo dos animais encontrados encalhados no litoral do Espírito Santo. Para isso, 43 pares de nadadeiras peitorais foram submetidos às mensurações externas e de estruturas ósseas internas (rádio, ulna e úmero) e à técnica de absorciometria de raio-x de dupla energia (DEXA) para massa óssea. As variáveis das nadadeiras foram testadas pelo critério de Akaike para escalonamento do melhor modelo de crescimento quando correlacionadas com a idade, e para o modelo alométrico quando correlacionadas com o comprimento total (CT). Foi testada a eficácia da DEXA. através do modelo de crescimento de Brody (melhor ajuste) e pode-se observar que as nadadeiras param de crescer por volta dos 2 anos de idade e o comprimento total do corpo aos 5.5 anos, apresentando essas estruturas crescimento precoce (alometria negativa) em relação ao CT. A metodologia aplicada para mensuração da massa óssea mostrou-se eficaz quando correlacionada com peso das cinzas. Não houve diferença de densidade óssea entre nadadeira direita e esquerda (P > 0.05), macho e fêmea (P > 0.05) e nem entre os animais dos três diferentes locais de ocorrência, pois todos estavam dentro do mesmo intervalo de confiança. A deposição da massa óssea é acentuada no início da vida com posterior estabilização por volta dos13 anos de idade.

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Precisão da técnica de absorciometria de raios-x de dupla energia na determinação da composição corporal em gatos

Cited by 3 publications

References 2 publications

DXA, bioelectrical impedance, ultrasonography and biometry for the estimation of fat and lean mass in cats during weight loss

DXA, bioelectrical impedance, ultrasonography and biometry for the estimation of fat and lean mass in cats during weight loss

Manejo nutricional para perros y gatos obesos

Thoracic limb bone development inSotalia guianensis(Van Beneden 1864) along the coastline of Espírito Santo, Brazil

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