Consumo voluntário e Ingestão de nutrientes em dietas contendo ração e diferentes sementes para Nymphicus hollandicus (Calopsita)

Na natureza a calopsita possui uma alimentação composta por uma enorme variedade de alimentos, sendo que em cativeiro, sua alimentação geralmente é deficiente, pois a oferta de mistura de sementes como único alimento, pode acarretar falta de nutrientes e a longo prazo o desencadeamento de doenças. O objetivo desse estudo foi mensurar o consumo voluntário e estimar a ingestão de nutrientes em Nymphicus hollandicus. Para tanto, foram utilizadas 21 aves da espécie, distribuídas em delineamento inteiramente casualizado, em três tratamentos com sete repetições cada. Os tratamentos experimentais foram 1- Ração comercial extrusada para psitacídeos, semente de girassol, alpiste e painço;2- Ração comercial extrusada para psitacídeos, alpiste e painço e 3- Ração. O consumo de alimento, sobras e desperdício foram mensurados durante sete dias consecutivos. A ingestão de nutrientes foi estimada baseada na ingestão de matéria seca e na composição nutricional dos itens alimentares ofertados. As aves do T1 ingeriram 1,6 e 1,75x mais energia em relação às do T2 e T3 e ingeriram maior quantidade total de matéria seca e proteína bruta (g/ave/dia). Foi possível verificar que a relação Ca:P foi mantida somente no T3, estando T1 e T2 abaixo da relação recomendada.  Conclui-se que a disponibilidade de mais de um item alimentar resulta em aumento significativo na ingestão de MS, demonstrando a preferência dessa espécie por alimentos com maior palatabilidade

Consumo voluntário e Ingestão de nutrientes em dietas contendo ração e diferentes sementes para Psittacula krameri (Ring Neck)

O objetivo desse trabalho foi mensurar o consumo voluntário e estimar a ingestão de nutrientes em Psitaculla Krameri mantidas sob cuidados humanos. Para tanto, foram utilizadas 21 aves da espécie, distribuídas em delineamento inteiramente casualizado, em três tratamentos com sete repetições cada. Os tratamentos experimentais foram 1- Ração comercial extrusada para psitacídeos, semente de girassol, alpiste e painço;2- Ração comercial extrusada para psitacídeos, alpiste e painço e 3- Ração. O consumo de alimento, sobras e desperdício foram mensurados durante sete dias consecutivos. A ingestão de nutrientes foi estimada baseada na ingestão de matéria seca e na composição nutricional dos itens alimentares ofertados. As aves do T1 ingeriram 2,6x mais energia em relação às do T2 e T3 e ingeriram maior quantidade total de matéria seca, proteína bruta, extrato etéreo e cálcio (g/ave/dia). Foi possível verificar que a relação Ca:P foi mantida somente no T3, estando T1 e T2 abaixo da relação recomendada. Conclui-se que a disponibilidade de mais de um item alimentar resulta em aumento significativo na ingestão de MS, demonstrando a preferência dessa espécie por alimentos com maior concentração de gordura e consequentemente com maior palatabilidade

Consumo voluntário e ingestão de nutrientes em Psephotus haematonotus (Red Rumped) alimentados com ração comercial e sementes

Avaliou-se consumo voluntário e estimou-se ingestão de nutrientes por Psephotus haematonotus frente à oferta de diferentes alimentos. Foram distribuídas 21 aves em três tratamentos e sete repetições sendo T1: Ração extrusada (RE), girassol (G), alpiste (A) e painço (P); T2: RE+A+P; T3: RE. Foram determinados os teores de matéria seca (MS), proteína bruta (PB), extrato etéreo (EE), matéria mineral (MM), cálcio (Ca), fósforo (P) e energia bruta (EB) para cada alimento, bem como foi estimada a ingestão total (IT) de MS, nutrientes (g/dia) e EB (kcal/dia/kg) feita pelas aves.  Verificou-se diferença (pT1 (6,10; 4,73; 2,74g MS/ave/dia, respectivamente). A ITEE diferiu entre os tratamentos (p T2 (0,467; 0,638; 0,155g EE/MS/dia). Houve diferença para ITEB (p=0,004), onde T3>T2>T1 (26,8; 19,99; 15,35g kcal/kg/dia), e ITPB (pT2 e T1 (0,81; 0,58; 0,40g PB/MS/dia). Para ITCa (p=0,001) e ITP (p T1 e T2 (0,007; 0,021g Ca/MS/dia e 0,01; 0,013g P/MS/dia respectivamente). A oferta de diferentes alimentos resultou em maior consumo de MS proveniente de sementes em relação ao vindo de RE, demonstrando que, possivelmente, frente a livre oferta de sementes, as aves consomem alimentos mais palatáveis, sendo incapazes de balancear sua dieta pela ingestão de nutrientes

Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

Correction to: Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

The original version of this article unfortunately contained a mistake

Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

VOLUNTARY INTAKE OF CAPTIVE PSITTACINES FED MIXED DIETS OF SEEDS AND EXTRUDED FEED

Psittacines are popular pet birds throughout the world. In the wild these birds consume a varied diet composed of seeds, nuts, flowers and invertebrates, according to seasonal availability. It is rare for captive birds to have a similar lifestyle and such a diverse diet. In captivity, mixed feeds (seeds and extruded feed) are available on the petfood market. However, these mixed diets allow birds to actively eat seeds resulting in non-balanced diets. The aim of this study was to determine selective voluntary intake of different diets based on different types of seeds and extruded feed in three different small/medium psittacine species commonly maintained as pets. Rose-ringed parakeets (P. krameri) preferentially consumed sunflower seeds, while lovebirds (Agapornis spp.), in the absence of sunflower seed, selected smaller seeds (canary grass and millet seeds). Cockatiels (N. hollandicus) consumed balanced amounts of seed and extruded feed. When sunflower seed was not provided, all three species selected canary grass and millet seeds over extruded feed. Extruded feed was only consistently consumed when offered as the only food source. This selective feeding resulted in excess intake of fat, protein and gross energy and generally a low calcium and imbalanced calcium and phosphorus ratio in diets in which extruded feed was not consistently consumed. Finally, metabolizable energy intake was above the recommended maintenance energy requirement when experimental diets containing sunflower seeds and exclusively extruded feed were offered. Voluntary intake of mixed diets can predispose captive psittacines to nutrient deficiencies, specially especially in the long term.

Nonlinear dynamic analysis of D-alpha signals for type I edge localized modes characterization on JET with a carbon wall

In this paper, the dynamic characteristics of type-I ELM time-series from the JET tokamak, the world's largest magnetic confinement plasma physics experiment, have been investigated. The dynamic analysis has been focused on the detection of nonlinear structure in D a radiation time series. Firstly, the method of surrogate data has been applied to evaluate the statistical significance of the null hypothesis of static nonlinear distortion of an underlying Gaussian linear process. Several nonlinear statistics have been evaluated, such us the time delayed mutual information, the correlation dimension and the maximal Lyapunov exponent. The obtained results allow us to reject the null hypothesis, giving evidence of underlying nonlinear dynamics. Moreover, no evidence of low-dimensional chaos has been found; indeed, the analysed time series are better characterized by the power law sensitivity to initial conditions which can suggest a motion at the 'edge of chaos', at the border between chaotic and regular non-chaotic dynamics. This uncertainty makes it necessary to further investigate about the nature of the nonlinear dynamics. For this purpose, a second surrogate test to distinguish chaotic orbits from pseudoperiodic orbits has been applied. In this case, we cannot reject the null hypothesis which means that the ELM time series is possibly pseudo-periodic. In order to reproduce pseudo-periodic dynamical properties, a periodic state-of-the-art model, proposed to reproduce the ELM cycle, has been corrupted by a dynamical noise, obtaining time series qualitatively in agreement with experimental time series