221 research outputs found

    Levels of Concentrate for Grazing Nelore Crossbred Steers in the Dry Period of the Year in Brazil

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    In Brazil, the fattening of supplemented grazing steers accounts for many finished animals in the dry season. This work had the objective of evaluating the effect of levels of concentrate on the fattening of crossbred Nelore steers grazing Brachiaria brizantha pasture in the dry period of the year

    Nutritional, Bioactive and Physicochemical Characteristics of Different Beetroot Formulations

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    Beetroot possesses high nutritional value and is considered one of the main dietary sources of nitrate. Nitrate has increasingly attracted the interest of the scientific community regarding new physiological, nutritional and therapeutic approaches with beneficial effects on the cardiovascular system. These effects can be explained by the possible effect of dietary nitrate in stimulating nitric oxide synthesis. Dietary nitrate can be reduced to nitrite in the oral cavity, which is then decomposed to nitric oxide and other bioactive nitrogen oxides in the stomach. Beetroot administration can be conducted by several types of formulations, in order to provide a convenient and alternative source of dietary beetroot, such as beetroot juice or beetroot chips and powder. The challenge in providing a product which, in addition to being rich in nitrate, is attractive and easy to administer, while also being microbiologically safe, is increased by the limited scientific information available concerning the nutritional aspects of beetroot formulations. In this chapter, a brief review on the efficiency of different beetroot formulations on health indicators is conducted, emphasizing the effects following the intake of nitrate-enriched beetroot gel. The metabolic and hemodynamic effects of beetroot formulations in healthy and non-healthy volunteers are also discussed

    Anemia and associated factors among school-age children in Cape Verde, West Africa

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    Anemia is a problem affecting a large group of school children in sub-Saharan Africa, contributing to morbidity in this region. In Cape Verde the magnitude of anemia in school-age children is unknown. The study aimed to assess the prevalence of anemia and associated factors among children in Cape Verde. The data are from a probabilistic sample of 1106 children between five and nine years of age included in the National Survey on the Prevalence of Anemia and Associated Factors among Children aged less than ten years which was organized by the Government of Cape Verde in 2009. Anemia was assessed by measuring blood hemoglobin (Hb) concentration using a portable hemoglobinometer. Children with Hb lower than 11.5 g/dL were considered anemic. Information on the families’ socioeconomic conditions and the children’s health variables were obtained through interviews with parents or guardians. Weight status and height deficits were defined by sex and age specific body mass index (BMI = weight/height2) and height for age cutoffs, respectively. Associations between anemia and socio-environmental, anthropometric and children´s health variables were investigated by means of logistic regression, using hierarchical multivariate analysis. Odds ratios (OR) and the respective 95% confidence intervals (95% CI) were estimated. The prevalence of anemia was 23.8% (95% CI: 20.2% - 27.8%); 8.8% of children presented height-for-age deficit, 9.8% had thinness and 5.3% were obese. The factors associated with anemia were unfavorable socio-environmental conditions (OR = 1.92; 95% CI: 1.10-3.36) and age five to six, compared with seven to nine years (OR = 1.55; 95% CI: 1.13-2.13). Anemia among school-age children is a moderate public health problem in Cape Verde that mainly affects those between five and six years of age, belonging to families with low socio-environmental condition. Prevention and control programs for this disease should be implemented in conjunction with actions to improve the conditions of Cape Verdean families.Key words: Anemia, socio-environmental conditions, school children

    Design of a new test chamber for evaluation of the toxicity of rubber infill

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    A test chamber was projected and built (according to ISO 16000-9 Standard) to simulate atmospheric conditions experienced by rubber infill (when applied in synthetic turf pitches) and measure accurately the airborne emissions of pollutants such as dusts and volatile organic compounds (VOC), as well as pollutants present in leachates. It should be pointed out that standard ISO 16000-9 is only concerned with the determination of the emission of VOC from building products and furnishing (not specific of synthetic turf materials), whereas other standards are concerned with the emission of leachates only. This procedure is to be considered as a technical option to the lysimeter "global turf system evaluation" when the rubber infill alone is to be evaluated. The advantage of the proposed option considering this "test chamber" is its simplicity and economy. This test chamber is actually installed and being used for tests in LAIST

    Child's oxytocin response to mother-child interaction: the contribution of child genetics and maternal behavior

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    The oxytocinergic system is a primary biological system involved in regulating a child’s needs for bonding and for protection from threats. It is responsive to social experiences in close relationships, though evidence across studies is not entirely consistent. Guided by previous literature, we investigated individual and environmental factors predicting and presumably affecting children’s oxytocin (OT) response during mother-child interaction. by focusing on children’s OXTR genotype, and maternal behavior, respectively. This was achieved by assessing salivary OT levels of 88 Portuguese preschoolers prior to and following a mother-child interaction task, and by genotyping children’s OXTR SNP rs53576. Maternal interactive behavior was assessed using Ainsworth scales. Results indicated that child genotype and mother’s sensitive responsiveness interacted in predicting change in child OT concentrations from before to after the interaction. Specifically, Genotypic differences emerged under conditions of low maternal sensitive responsiveness: OT levels increased over time for children with the GG genotype when maternal sensitive responsiveness was low, but no such genotypic differences were evident when mothers were highly sensitive responsive. Findings provide preliminary support for the notion that increased understanding of children’s OT and close relationships requires consideration of both individual and environmental factors.info:eu-repo/semantics/acceptedVersio

    Valor nutritivo de grãos de sorgo com diferentes textura do endosperma para frangos de corte.

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    Utilizaram-se 250 frangos machos, com 22 dias de idade, em ensaio biológico baseado em coleta total de excretas para a determinação da matéria seca metabolizável aparente (MSMA) e dos valores de energia metabolizável (EM) aparente e corrigida de grãos de sorgo com diferentes texturas do endosperma. Os genótipos avaliados foram o BR 007B (textura macia), BR 304 (textura intermediária) e se 283 (textura dura). As dietas-teste foram compostas por 60% de dieta-referência (composta a base de milho e fareIo de soja) e por 40% de grãos de sorgo. O experimento foi montado em esquema inteiramente ao acaso, com quatro tratamentos e cinco repetições. Os valores de MSMA foram semelhantes entre os grãos de sorgo (P>O,05), sendo 77,09%, 81,73% e 79,69% para os grãos de textura dura. intermediária e macia, respectivamente. Os valores de energia metabolizável aparente e verdadeira (EMA, EMV) e EMA e EMV corrigidas para a retenção do nitrogênio (EMAn e EMV J dos grãos de sorgo de textura dura. intermediária e macia foram, respectivamente, 3.022, 3.127, 2.947 e 2.934; 3.335,3.442,3.369 e 3.419; 3.339,3.450,3.303 e 3.355 kcal/kg. Os grãos de textura dura (Se 283) apresentaram menores valores de EM (P<0,05) que os de textura intermediária (BR 304) e macia (BR 007B). As correções dos valores de EM para o balanço de nitrogênio resultou apenas em discretas reduções da EM

    Comparative analysis between synthetic vitamin E and natural antioxidant sources from tomato, carrot and coriander in diets for market-sized dicentrarchus labrax

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    Synthetic vitamin E is commonly used in aquafeeds to prevent oxidative stress in fish and delay feed and flesh oxidation during storage, but consumers’ preferences tend towards natural antioxidant sources. The potential of vegetable antioxidants-rich coproducts, dried tomato (TO), carrot (CA) and coriander (CO) was compared to that of synthetic vitamin E included in diets at either a regular (CTRL; 100 mg kg−1) or reinforced dose (VITE; 500 mg kg−1). Natural antioxidants were added at 2% to the CTRL. Mixes were then extruded and dried, generating five experimental diets that were fed to European sea bass juveniles (114 g) over 12 weeks. Vitamin E and carotenoid content of extruded diets showed signs of degradation. The experimental diets had very limited effects on fish growth or body composition, immunomodulatory response, muscle and liver antioxidant potential, organoleptic properties or consumer acceptance. Altogether, experimental findings suggest that neither a heightened inclusion dose of 500 mg kg−1 of vitamin E, nor a 2% inclusion of natural antioxidants provided additional antioxidant protection, compared to fish fed diets including the regular dose of 100 mg kg−1 of vitamin E.info:eu-repo/semantics/publishedVersio

    The factor structure of the Forms of Self-Criticising/Attacking & Self-Reassuring Scale in thirteen distinct populations

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    There is considerable evidence that self-criticism plays a major role in the vulnerability to and recovery from psychopathology. Methods to measure this process, and its change over time, are therefore important for research in psychopathology and well-being. This study examined the factor structure of a widely used measure, the Forms of Self-Criticising/Attacking & Self-Reassuring Scale in thirteen nonclinical samples (N = 7510) from twelve different countries: Australia (N = 319), Canada (N = 383), Switzerland (N = 230), Israel (N = 476), Italy (N = 389), Japan (N = 264), the Netherlands (N = 360), Portugal (N = 764), Slovakia (N = 1326), Taiwan (N = 417), the United Kingdom 1 (N = 1570), the United Kingdom 2 (N = 883), and USA (N = 331). This study used more advanced analyses than prior reports: a bifactor item-response theory model, a two-tier item-response theory model, and a non-parametric item-response theory (Mokken) scale analysis. Although the original three-factor solution for the FSCRS (distinguishing between Inadequate-Self, Hated-Self, and Reassured-Self) had an acceptable fit, two-tier models, with two general factors (Self-criticism and Self-reassurance) demonstrated the best fit across all samples. This study provides preliminary evidence suggesting that this two-factor structure can be used in a range of nonclinical contexts across countries and cultures. Inadequate-Self and Hated-Self might not by distinct factors in nonclinical samples. Future work may benefit from distinguishing between self-correction versus shame-based self-criticism.Peer reviewe
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