The identification of somatic growth, through reference curves, can be used to create strategies and public policies to reduce public health problems such as malnutrition and obesity and to identify underweight, overweight and obesity, taking into account the variability of physical and of human development characterized by intra and interpopulation heterogeneity. The purpose of this systematic review was to identify studies providing reference growth curves for weight status (underweight, overweight or obesity) in children and adolescents. A systematic search was conducted in CINAHL; LILACS; PubMed ScienceDirect; Scopus; SPORTDiscus; SciELO; Web of Science. Manual searches were also carried out in gray literature (Google scholar) in order to find possible studies that were not retrieved by the search strategy. Data were extracted by two independent reviewers, and consensus was verified between them. To assess the risk of bias/methodological quality of studies, the National Institutes of Health (NIH) Quality Assessment Tool for Observational Cohort and Cross-sectional Studies (NHLBI) was used. Overall, 86 studies that met the inclusion criteria were included (cross-sectional and longitudinal). Through the values of reference growth curves for the identification of underweight, overweight and obesity, it was possible to verify that there is great variability among percentiles for the identification of underweight, overweight and obesity. The most prevalent percentiles for underweight were P3 and P5; for overweight, the most prevalent was P85 and the most prevalent percentiles for obesity were P95 and P97. The most prevalent anthropometric indicators were Body Mass Index (BMI), Waist Circumference (WC), Body Mass (BM) for age and height for age. Conclusion: The optimal growth must be reached, through the standard growth curves, but that the reference curves demonstrate a cut of the population growth, raising possible variables that can influence the optimal growth, such as an increase in the practice of physical activities and an awareness of proper nutrition.

Methionine (MET) supplementation is a current strategy to achieve shrimp requirement. Notwithstanding, the efficiency of the precisely formulated feeds can be diminished since shrimps are slow eaters and masticate feed externally that results in nutrient leaching. In this regard, a methionine dipeptide (DL-methionyl DL-methionine) benefits the feed industry by reducing MET water solubility while increasing its bioavailability. Therefore, the effects of feeding whiteleg shrimp (Penaeus vannamei) with increasing levels of methionine dipeptide were evaluated on zootechnical performance and methionine-, immune- and antioxidant-related pathways. A 74 d growth trial was conducted by feeding a control diet and four diets supplemented with AQUAVI® Met-Met at 0·08, 0·12, 0·24 and 0·32% of DM. Diet digestibility, body amino acids (AA) composition and nitrogen metabolites, metabolic enzymes, oxidative status and gene expression were evaluated. It can be concluded that graded dietary increase of methionine dipeptide up to 0·24 % for 74 d translated in significant gains on the growth performance, feed efficiency, nutrient and nitrogen gain and shrimp survival. Moreover, it was showed that Met-Met dietary spare leads to an improvement of free-AA pool and nitrogen metabolites concentration and reduces the signs of oxidative stress. Finally, in a closer look to the MET-related pathways passive to be altered by Met-Met spare, a clear modulation of the described antioxidant and cell proliferation routes was detected.

Tail biting is a major problem in modern pig (Sus scrofa) production and results in a reduction of animal welfare and productive performance. Biting behaviour has been shown to be decreased by the use of enrichment objects. In this study, 108 pigs housed in a room with 12 pens were observed and a sequence of seven different enrichment materials was tested. Gilts and barrows were housed together and received a new enrichment object each week starting from three different points in the fattening period, ie 20, 40 or 70 kg bodyweight. Toy-contact and biting-penmate behaviour were observed during one hour at day of introduction and five days later. A continuous sequence of seven enrichment objects reduced biting-penmate behaviour and the number of wounds compared to providing only a single toy (chain). This study also confirmed that not every object was feasible as an enrichment object for growing pigs. Generally, the highest toy contact was observed together with the highest biting-penmate behaviour. Most toy-contact and biting-penmate behaviour was observed between 20 and 40 kg bodyweight and was decreasing over age. Providing a sequence of toys for the first time induced toy-contact behaviour while reducing bitingpenmate behaviour but decreased after applying the same sequence for the second or third time. The presence of a single chain or a sequence of different toys had no effect on growth and feed conversion. The ideal sequence should maintain toy-contact behaviour without competition in order to avoid biting-penmate behaviour and reduced animal welfare.

This article focuses on the role of unionised members of parliament. While unions have a direct effect on the labour market via wage negotiations, they often also take part in political debates. In many countries, significant shares of the members of parliament are also members of a trade union. However, up to now little empirical evidence is available on the extent to which unionised members of parliament try to achieve union-specific goals and thereby influence the macroeconomic conditions of an economy. A recent study for Germany comes to the conclusion that union members in the Bundestag cannot be seen as the parliamentary arm of the trade unions. However, we present contradicting empirical results by showing that, in Germany at least, the degree of unionisation of parliamentary members has a negative impact on economic growth and increases inflation, while unemployment remains unaffected.

Governments’ economic policies need to be based on a coherent view of the role of innovation and productivity in sustaining growth. This article analyses advice on fostering innovation from Australia’s main statutory economics adviser, the Productivity Commission. It argues that the Productivity Commission’s comprehensive 2007 report, Public Support for Science and Innovation, contributed to a policy vacuum hampering government support for innovation for nearly a decade. First, within the Productivity Commission’s understanding of innovation was a contradiction between its required policy targeting criteria and the impossibility of meeting these criteria. Second, the resulting stance on innovation policy was at odds with research and theory on the drivers of innovation and hence growth – particularly innovation systems theories and those based on evolutionary economics. The ensuing innovation policy vacuum suggests that the Productivity Commission placed the abstract ideological ‘purity’ of neoclassical economic theory above empirical exploration of how government can best support Australia’s future economic development. Since late 2015, moves to fill this policy vacuum have included a Senate inquiry, a government department restructure, and the creation of a new Innovation and Science statutory advisory board. Whether these initiatives foster sustained innovation will depend on the extent to which they adopt approaches based on innovation systems or evolutionary economics, and transcend the static neoclassical mindset espoused by the Productivity Commission.

This essay is a review of and tribute to the life and contributions of Nina Shapiro, who passed away this year. Shapiro was an American Post-Keynesian economist, who was a bridge figure in radical economics, connecting Marx to Keynes, Schumpeter to Kaldor, the behavior of the firm to the dynamics of the macroeconomy, and the process of innovation to the organization of production and accumulation. She was seminal to important moments in the history of radical economics in the US, including the formation of the Hegel-inspired journal Social Concept in the 1980s and the Rutgers University’s Post-Keynesian circle in the 1980s and 1990s. Shapiro’s deeply philosophical and dialectical approach to firm behavior, innovation, and business cycles led her to theorize the “revolutionary character” of Post-Keynesian economics and to formulate a critique of the competitive neoclassical firm which, she argued, is at odds with the logic of capitalism in which firms seek to make profit and grow.

Broiler breeder chickens are commonly reared under strict feed-restriction regimes to reduce obesity-induced health and fertility problems during adult life, and are assumed to experience a reduced welfare due to the resulting hunger. In these conditions, feed competition could influence the growth rate, so that the individuals falling behind in growth would experience more stress and hunger. We hypothesised that these chickens are poor competitors due to a reactive coping style and experience a further reduced welfare situation before size-sorting (‘grading’) at four weeks of age. Our results from open field, tonic immobility and home pen activity monitoring show signs of lower fear and higher home-pen activity levels in smaller hens and do not support the idea of reactive coping. H/L ratios of smaller hens were also found to be lower, indicating less stress in these birds. Dissections of smaller and larger four-week breeder hens may offer an explanation in the form of a relatively larger gastrointestinal tract in smaller birds. We argue that this is a form of habituation to restricted feeding, offering these birds a physiological stress coping mechanism, and that low early growth rate may not always be a sign of poorer welfare in broiler breeders.

We are now close to reaching what climate scientists advise is a ‘tipping point’ when the injuries we have visited on the planet will become self-reinforcing and produce an ecosystem that is alien to human life. The mal-distribution of consumption within and between nations is a major reason why there is little agreement on appropriate remedial action. Ensuring planetary survival while reducing inequity is made the more difficult, because the richest one-seventh of the world’s population has already reached consumption levels beyond the capacity of the planetary ecosystem to accommodate it.

The rapid liberalisation of trade policies since the 1990s has brought additional attention to the role of trade as an engine of economic growth. Although an abundant literature addresses the relationship between openness and economic growth, the real effect of trade liberalisation is still ambiguous and undetermined. Most previous studies have ignored the selection effects of strict labour regulations on international trade. The main objective of this study is to measure the role of labour regulations in moderating the contribution of trade to economic growth among 30 Organisation for Economic Co-operation and Development countries for the period 2006–2013. In doing so, we employ a one-step Generalised Method of Moments system estimation method. Our results reveal that openness to trade does not have a robust and significant effect on growth. However, the interaction of openness with strict labour regulations enhances the contributions of trade to growth.

This paper critically examines the key empirical evidence used to support the fiscal consolidation argument, complemented by a brief assessment of the limitations of the analytical foundation of the growth promoting benefits of the fiscal consolidation thesis. It also reviews the evidence on the debt-growth relationship at some length. It finds that the negative relationship between debt and GDP growth is influenced by outliers or exceptionally high debt-GDP ratios. It also points out that the composition of public debt matters. Additionally, the debt-GDP relationship appears to be non-linear—positive first and turning to negative, but there is considerable variation in the estimated turning or ‘tipping’ point, which is not helpful as a policy guide. Historical evidence does not lend support to the concerns that the current situation is likely to cause rapid upward spiraling of public indebtedness. Finally, the argument that fiscal consolidation is possible without adversely affecting growth is not based on robust empirical evidence. This conclusion is reinforced by a succinct overview of some country-specific experiences (Denmark, Ireland and United States).

The current study aims to describe the consumption of ultra-processed foods, from 2 to 4 years old, and evaluate its association with growth outcomes during the same period. It is a prospective cohort study using data from the 2015 Pelotas-Brazil Birth Cohort. Outcomes assessed at the 2- and 4-year-old follow-ups were BMI-for-age Z-score and length/height-for-age Z-score. The exposure was a score of ultra-processed food consumption calculated at each follow-up by summing up the positive answers for the consumption of nine specific items/subgroups of ultra-processed foods: (i) instant noodles; (ii) soft drink; (iii) chocolate powder in milk; (iv) nuggets, hamburger or sausages; (v) packaged salty snacks; (vi) candies, lollipops, chewing gum, chocolate or jelly; (vii) sandwich cookie or sweet biscuit; (viii) juice in can or box or prepared from a powdered mix and (ix) yogurt. Crude and adjusted analyses between the score of ultra-processed foods and the outcomes were run using generalised estimating equations. Prevalence of consumption of ultra-processed foods increased from 2 to 4 years old, for all evaluated items/subgroups, except yogurt. In prospective analyses, higher scores of ultra-processed food consumption were associated with higher BMI-for-age Z-score and lower length/height-for-age Z-score, after adjustment for confounders. Ultra-processed food consumption, measured using a short questionnaire with low research burden, increased from 2 to 4 years old and was related to deleterious growth outcomes in early childhood. These results reinforce the importance of avoiding the consumption of these products in childhood to prevent the double burden of malnutrition and non-communicable chronic diseases throughout the life.

In practice, firms face a number of scarce innovation projects. They choose one towards which to direct their effort, but do not coordinate these choices. This gives rise to coordination frictions. This paper develops an expanding-variety endogenous growth model to study the implications of these frictions for growth and welfare. We find that the coordination failure generates a number of foregone innovations and reduces the economy-wide research intensity. Both effects decrease the growth rate. This creates a general equilibrium effect that endogenously amplifies the fraction of wasteful simultaneous innovation. Furthermore, formalizing the coordination frictions uncovers a novel link between the “stepping on toes” and “standing on shoulders” externalities—their magnitudes are endogenously determined through the ratio of firms to innovation projects. We find that the “stepping on toes” externality is larger for all parameter values.