Alitran4250

Although the tambaqui (Colossoma macropomum) is the most cultivated native fish species in Brazil, estimated breeding values for growth traits are rarely used for selection of superior individuals in commercial fingerling production. This study aimed to estimate the (co)variance components of growth traits. Body weight, length and width of 2500 tambaqui were determined at tagging and at 6 and 12 months after tagging in a commercial breeding programme in Brazil. Heritability estimates were low for traits measured at tagging (0.10 to 0.19) and moderate to high for traits measured at 6 and 12 months (0.23 to 0.81). Common full-sib effects were high at tagging (>73%), low at 6 months and negligible at 12 months. Positive genetic correlations were found among growth traits at 12 months (0.84 to 0.99) and between growth traits at 6 and 12 months (0.80 to 0.92). These results show that animal selection can be performed at 6 months after tagging. Expected genetic gains for growth traits ranged from 8% to 31%. A simulation of the sex ratio was performed, as individuals did not reach sexual maturity during the experimental period. Because of the sexual dimorphism, more accurate heritability estimates were obtained when considering the female proportion to be 90% in the high-weight group. The findings indicate that it is possible to obtain considerable genetic gains in growth by selecting for growth traits. The development of a tool to determine the sex of animals at early stages can improve the response to selection in tambaqui.OBJECTIVE Carbonated beverage consumption is associated with various adverse health conditions such as obesity, type 2 diabetes and CVD. Pakistan has a high burden of these health conditions. At the same time, the carbonated beverage industry is rapidly growing in Pakistan. In this context, we analyse the trends and socioeconomic factors associated with carbonated beverage consumption in Pakistan. DESIGN We use six waves of the cross-sectional household surveys from 2005-2006 to 2015-2016 to analyse carbonated beverage consumption. We examine the trends in carbonated beverage consumption-prevalence for different economic groups categorised by per capita household consumption quintiles. We estimate the expenditure elasticity of carbonated beverages for these groups using a two-stage budgeting system framework. We also construct concentration curves of carbonated beverage expenditure share to analyse the burden of expenditure across households of different economic status. SETTING Pakistan. PARTICIPANTS Nationally representative sample of households in respective survey waves. RESULTS We find that the wealthier the household, the higher is the prevalence of carbonated beverage consumption, and the prevalence has increased for all household groups over time. From the expenditure elasticity analysis, we observe that carbonated beverages are becoming an essential part of food consumption particularly for wealthier households. And, lastly, poorer households are bearing a larger share of carbonated beverage expenditure in 2014-2016 than that in 2006-2008. CONCLUSION Carbonated beverages are becoming an increasingly essential part of household food consumption in Pakistan. Concerns about added sugar intake can prompt consideration of public health approaches to reduce dietary causes of the disease burden in Pakistan.This paper is a retrospective analysis of the sole transfer of monopronucleated zygotes (1PN) embryos both in in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) to determine the value of transferring embryos formed from 1PN. Selleck Tubastatin A In fresh cycles, 1PN cleavage-stage embryos (1PN cleavage fresh) were transferred. In frozen-thawed cycles, 1PN blastocyst-stage embryos (1PN blast frozen) were transferred. We used comparison groups for fresh cycles, 2PN cleavage-stage embryos (2PN cleavage fresh) were transferred; and for frozen-thawed cycles, 2PN blastocyst-stage embryos (2PN blast frozen) were transferred. Comparison groups were matched for cycle and patient characteristics to the 1PN group. Finally, for fresh cycles, live birth rates (LBR) in the 1PN cleavage group were significantly lower than those in 2PN cleavage group, both for IVF [LBR = 7.64% vs. pregnancy rate (PR) = 22.12%, P = 0.003, respectively] and ICSI (LBR = 0% vs. LBR = 20.00%, P less then 0.001, respectively). For frozen-thawed IVF cycles, the PR in the 1PN blastocyst group were comparable with those of the 2PN blastocyst group (1PN LBR = 33.14% vs. 2PN LBR = 37.24%, P = 0.289, respectively), while in ICSI, the PR in the 1PN blastocyst group were lower than those in the 2PN blastocyst group (LBR = 15.25% vs. LBR = 40.68%, P = 0.002, respectively). So, for IVF, blastocyst culture was capable of selecting normal 1PN embryos for transfer and achieves satisfying outcomes. However, for ICSI, blastocyst culture was not effective enough to eliminate abnormal embryos and 1PN embryo transfer needed to be treated with caution.Dual inhibition (2i) of Ras-MEK-ERK and GSK3β pathways enables the derivation of embryo stem cells (ESCs) from refractory mouse strains and, for permissive strains, allows ESC derivation with no external protein factor stimuli involvement. In addition, blocking of ERK signalling in 8-cell-stage mouse embryos leads to ablation of GATA4/6 expression in hypoblasts, suggesting fibroblast growth factor (FGF) dependence of hypoblast formation in the mouse. In human, bovine or porcine embryos, the hypoblast remains unaffected or displays slight-to-moderate reduction in cell number. In this study, we demonstrated that segregation of the hypoblast and the epiblast in rabbit embryos is FGF independent and 2i treatment elicits only a limited reinforcement in favour of OCT4-positive epiblast populations against the GATA4-/6-positive hypoblast population. It has been previously shown that TGFβ/Activin A inhibition overcomes the pervasive differentiation and inhomogeneity of rat iPSCs, rat ESCs and human iPSCs while prompting them to acquire naïve properties. However, TGFβ/Activin A inhibition, alone or together with Rho-associated, coiled-coil containing protein kinase (ROCK) inhibition, was not compatible with the viability of rabbit embryos according to the ultrastructural analysis of preimplantation rabbit embryos by electron microscopy. In rabbit models ovulation upon mating allows the precise timing of progression of the pregnancy. It produces several embryos of the desired stage in one pregnancy and a relatively short gestation period, making the rabbit embryo a suitable model to discover the cellular functions and mechanisms of maintenance of pluripotency in embryonic cells and the embryo-derived stem cells of other mammals.