Revisiting the scaling of the specific heat of the three-dimensional random-field Ising model

We revisit the scaling behavior of the specific heat of the three-dimensional random-field Ising model with a Gaussian distribution of the disorder. Exact ground states of the model are obtained using graph-theoretical algorithms for different strengths = 268 3 spins. By numerically differentiating the bond energy with respect to h, a specific-heat-like quantity is obtained whose maximum is found to converge to a constant in the thermodynamic limit. Compared to a previous study following the same approach, we have studied here much larger system sizes with an increased statistical accuracy. We discuss the relevance of our results under the prism of a modified Rushbrooke inequality for the case of a saturating specific heat. Finally, as a byproduct of our analysis, we provide high-accuracy estimates of the critical field hc = 2.279(7) and the critical exponent of the correlation exponent ν = 1.37(1), in excellent agreement to the most recent computations in the literature

Not Available

Not AvailableThe power of the draught animals is transmitted to the implements through a rigid yoke or flexible straps/ropes. The rigid yoke is tied to the horn or the animal head and placed on the neck withers. Yoke is an important component of animal implement system and plays a vital role in transfer of power generated through muscles of draught animals. All these observations were recorded for quite a long time and consistent efforts made to reduce such detrimental effects on animals by continuously working to improve the yoke. The resulted in design of an improved yoke named as Allahabad yoke.Not Availabl

Efeito de diferentes níveis de proteína e energia sobre o rendimento de carcaça de codornas européias Effect of protein and energy levels on carcass yield of European quails

Avaliou-se o rendimento de carcaça de codornas européias de corte (Coturnix coturnix coturnix) no 42º dia de idade, alimentadas com dietas contendo quatro níveis de proteína e dois níveis de energia. O delineamento experimental foi inteiramente ao acaso, com seis repetições e oito codornas por unidade experimental. Os tratamentos constituíram de um fatorial 2×4, ou seja, dois níveis de energia (2900 e 3100kcal EM/kg) e quatro níveis de proteína (22, 24, 26 e 28% proteína bruta na dieta). As variáveis estudadas foram: peso vivo, peso de carcaça, rendimento de carcaça, peso de coxa, rendimento de coxa, peso de peito, rendimento de peito, peso de gordura abdominal, rendimento de gordura abdominal, peso de vísceras comestíveis e rendimento de vísceras comestíveis. Não houve efeito significativo dos níveis de energia e nem dos níveis de proteína sobre nenhuma das características de carcaça analisada.<br>The effect of protein and energy levels on 42nd day carcass yield of European quails (Coturnix coturnix coturnix) was evaluated. A completely randomized design with five replicates and eight quails per experimental unit was used. The treatment consist on diets with two energy metabolic levels (2900 and 3100kcal EM/kg) and four protein levels (22, 24, 26 and 28% of crude protein). The traits analyzed were body weight and weight and yield of carcass, tight, breast, fat and edible viscera. No significant effects of crude protein and metabolic energy levels on carcass traits were found

On the use of commercial quails as study organisms: lessons about food intake from individual variation in body mass

We analysed inter-individual body mass variation of Japanese quail (Coturnix coturnix japonica) in an examination of the effectiveness of regulations governing daily food requirements. We measured the daily food intake of 26 adult female quail during a feeding trial over four consecutive days. Non-ingested food was weighed every morning and 70 g of food was provided to each bird for every day of the trial. This represented more than three times the theoretical recommended daily amount of food required by Japanese quail, as described in the literature. We then calculated a female-specific mean daily food requirement and found highly significant variation among individuals. Daily food intake was significantly repeatable within-female over the trial and mean food intake was highly correlated with female body mass. We suggest that using daily requirements for individuals based upon 'population' means, whilst ignoring differences in body mass among individuals might have severe consequences for the welfare of birds. Furthermore, these results have significant implications for studies where the aim is to perform identical experimental manipulations (as some studies intend and suggest), resulting in the drawing of unsubstantiated conclusions