Three experiments were conducted, from January until September 2001, to estimate the optimized age to apply feed restriction to control mortality from ascites, with no negative effects on production and carcass characteristics of broilers. For each experiment, 1,200 1-d-old mixed Ross x Peterson chicks were reared in floor pens (50 chicks in each) and fed commercial feed. Feed restriction was applied for 8 h/d for 14 d at 21 or 28 d of age in experiment 1, 14 or 21 d in experiment 2, and 7 or 14 d in experiment 3. In experiments 2 and 3, a microelement supplement (without or with) was tested; the control groups received feed ad libitum and no supplement. Body weight gain, feed conversion, total mortality, and mortality from ascites, leg problems, and carcass characteristics were considered at the end of each experiment. The data were analyzed as a completely randomized design, or as a 2 x 2 factorial to estimate main and interaction effects (experiments 2 and 3). Additional analyses, including the control, were done; means comparisons were by orthogonal contrasts. The production and carcass characteristics of the restricted groups were lower than the control but were not statistically different in experiments 2 and 3, although the optimized age for feed restriction was at 7 d. Total mortality and mortality from ascites decreased by restriction, but leg problems increased without supplement. The results indicated that quantitative feed restriction and microelement supplementation at 7 d of age reduced mortality from ascites and leg problems and permitted compensatory growth sufficient to equal the production characteristics of the control group at 49 d of age. However, it is necessary to determine the specific microelements to be supplemented and to estimate the effects of season and genetic line.

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The use of nitazoxanide has previously yielded successful results in vitro against the coronavirus. The aim of the present study was to examine the efficacy of the use of nitazoxanide at an early stage among healthcare workers exhibiting symptoms of COVID-19. This was a prospective study carried out in 2020. Healthcare personnel who presented with COVID-19 symptoms, in different 3 hospitals were invited to take Paramix (nitazoxanide), 500 mg orally, every 6 h for 2 days and then 500 mg twice a day for 4 days. To compare the hospitalization percentage, a group of healthcare workers with a respiratory viral infection without COVID-19 criteria were also followed-up. Over a period of 3 months, 150 healthcare workers (111 women and 39 men) presented respiratory symptoms with COVID-19 criteria (mean age, 36±10.6 years; range, 18-68 years). Only one female medical doctor, one nurse and one male from the auxiliary services had to be hospitalized and one death was registered It was thus concluded that nitazoxanide yielded successful results in vitro against previous coronavirus and may prove to be useful against SARS-CoV-2 as an early intervention to avoid complications, decreasing the expected number of hospitalizations among infected healthcare workers.

SummaryThe Klippel-Trenaunay syndrome is a rare congenital disorder that affects one or more limbs. It is characterised by cutaneous vascular nevi, venous malformations and hypertrophy of soft tissues and bone. There are very few cases reported in pregnant women, so the level of uncertainty is high when it appears during gestation. It is a disease that increases obstetric risk and can exacerbate complications, mainly thromboembolic and haemorrhagic. We report below the case of a pregnant woman diagnosed with this syndrome and the multidisciplinary management held in our centre. BACKGROUND