16 research outputs found
A study of relationships between fat partition and metabolism in Hereford and Friesian steers
SIGLEAvailable from British Library Document Supply Centre-DSC:DX202354 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Detection of haematoporphyrin derivative and haematoporphyrin excited states in cell environments
Carotenoid radical-melanin interactions
The radical cations of five dietary carotenoids have been shown to react with dopamelanin (a model of the black eumelanin) and cysteinyldopamelanin (a model of the red/yellow pheomelanin) in both micellar and homogeneous environments. It is suggested that such repair reactions show previously unidentified protective roles for melanin/carotenoid combinations, especially where the maintenance of the (small) carotenoid concentration is vital to avoid deleterious effects, such as in the retina of the eye
Biodistribution and tumor uptake of [67Ga]chlorogallium-tetraoctadecyloxy phthalocyanine and its sulfonation products in tumor bearing C3H mice
Avaliação do crescimento de tecidos e órgãos de novilhos mestiços Holandês-Gir durante o ganho compensatório. 2. Tecidos e órgãos Evaluation of growth of tissues and organs of crossbreed Holstein-Gyr steers during compensatory growth. 2. Tissues and organs
O objetivo deste trabalho foi analisar os efeitos da restrição alimentar anterior ao confinamento sobre o crescimento e a composição quÃmica de tecidos e órgãos corporais em bovinos. Foram utilizados 24 novilhos mestiços Holandês-Gir com idade de 19,3±5,1 meses e peso vivo de 202,1±49,1 kg, ao inÃcio do experimento. Quinze animais foram confinados após um perÃodo de restrição de pasto (grupo ganho compensatório), enquanto nove deles tiveram livre acesso ao pasto (grupo ganho contÃnuo). Foram abatidos três animais de cada grupo, no inÃcio, aos 28 e 112 dias do confinamento e, aos 56 e 84 dias de confinamento, foram abatidos três animais do grupo de ganho compensatório. Durante o confinamento, os animais do grupo de ganho compensatório e do grupo de ganho contÃnuo receberam alimentação ad libitum, composta por silagem de milho e 26% de concentrado, na matéria seca. As taxas de crescimento relativo foram avaliadas por meio de equações alométricas. As taxas de deposição de proteÃna, gordura e energia na carcaça, em relação ao ganho de peso de corpo vazio (PCVZ), não diferiram entre os tratamentos. A deposição de proteÃna nos órgãos, em relação ao aumento do PCVZ, foi mais elevada nos animais do grupo ganho compensatório do que nos animais de ganho contÃnuo, tendo os valores mais elevados sido observados em todas as partes corporais. O crescimento dos músculos Biceps femoris e Tensor fascia latea, o peso e os teores de proteÃna, cálcio e fósforo do fêmur e da oitava costela não foram afetados pela restrição alimentar anterior ao confinamento.<br>The research aimed to analyze the effects of feed restriction prior to the confinement on growth and chemical composition of the tissues and organs in cattle. Twenty-four Holstein-Gyr crossbred steers, with 19,3 ± 5,1 months of age and 202,1 ± 49,1 kg LW, at beginning of the trial were used. Fifteen of the animals were confined after a 104-day period of forage restriction, in which it was intended to keep body weight unchanged (compensatory gain group), while nine of them had free access to pasture (continuous gain group). At beginning of the experiment and at days 28 and 112 of confinement, three animals of each group were slaughtered, and at days 56 and 84, three animals of compensatory gain group were slaughtered. During confinement, the animals from the compensatory gain group and continuous gain group were fed ad libitum; composed b y corn silage and 26% of concentrate, as dry matter basis. The relative growth rates were evaluated through allometric equations. The rates of protein, fat and energy deposition in the carcass did not differ between treatments, in relation to empty-body weight gain (EBW). The protein deposition in the organs, in relation to EBW gain, was greater in compensatory growth group than in the continuous gain group, being the high values observed in all body parts. The growth rates of the muscles Biceps femoris and Tensor fascia latea were not affected by the feed restriction prior to the confinement, as well as the growth rate and the content of protein, calcium and phosphorus in the femur and 8th rib