Báo cáo sinh học: " Impact of the use of bovine somatotropin (BST) on dairy cattle selection" ppt

... J. Dairy Sci. 67, 1567-1580Simianer H. & Wollny C. (1989) Impact of the potential use of Bovine Somatotropin (BST) on the efficiency of a conventional dairy cattle ... None of these 3 conditions is met in a BST situation. The impact of BST isnot a mere reduction of heritability.As might be anticipated, the bull-dam path is the ... the reduction of genetic gain comes from the male paths, as shown by a detailedexamination of the figures. The impact of BST on breeding schemes cannot eitherbe...

Báo cáo sinh học: " Relationship between the loss of neutralizing antibody binding and fusion activity of the F protein of human respiratory syncytial virus" doc

... better understand the mechanism of action of HRSV neutralizing antibodiesand the impact of resistance to these antibodies upon the fusion activity of the F protein. A summary of these resultsis ... formation of mature virionparticles [26,28,29]. It is possible that the RNA sequence of this region contains some critical function, and/or thatmutations in this region of the F protein impact ... of the fusion activity of the panel of mutationsdescribed here revealed that the fusion activity of the Fprotein is tolerant to multiple changes in the site II and IV/V/VI region. These changes...

Báo cáo sinh học: " Re-evaluating the role of natural killer cells in innate resistance to herpes simplex virus type 1" pot

... observed in the progression of viral pathogenesis or the duration of sur-vival of BALB/c scid mice versus NOD scid mice (Fig. 2B).Flow cytometry demonstrated that approximately one-third of the peripheral ... caveat of the NK cell deple-tion experiments was that control IgG or anti-asialo GM1had the unanticipated effect of prolonging the survival of HSV-1 infected scid mice. Neither IgG preparation ... biological functions of IFN-α/β and IFN-γ are depend-ent on the phosphorylation of Stat 1, which results in Stat1 dimerization, nuclear translocation, and transcriptionalactivation of IFN-stimulated...

Báo cáo sinh học: "RNAi and the shape of things to come" ppsx

... lot of the apparent complexity in cellbiology is a product of over-expressionstudies, and loss -of- function data canclarify some of these situations.” “And then we will have to go backto the ... 16% of the genes gave visible phenotypes inat least one of the two cell lines. The group then had to work out aformalized process for dealing with all the information that came out of the screen. ... familiarizing themselveswith the range of phenotypes thatappeared, they developed a system of ‘phenotypic annotation’ to record the effects of silencing each one of hundreds of genes, starting...

Báo cáo sinh học: "Trees in the Web of Life" pot

... For example, because of such highways of gene sharingthese types of analyses group members of the orderThermotogales with the Firmicutes, and the members of the 54.2Journal of Biology2009, ... measure of howrepresentative a particular topology of each tree is to the rest of the trees in the Forest of Life.In reconstructing the central tendency in such a broaddistribution of gene ... supermatrix analyses, the resulting trees at best represent the history of only aminor fraction of the genome, largely consisting of ribo-somal proteins, effectively a ‘tree of one percent’ [9]....

báo cáo khoa học: "Interventions encouraging the use of systematic reviews by health policymakers and managers: A systematic review" ppsx

... frequency and timing of the intervention, duration of the intervention, format of the intervention (e.g., web-based, person-to-personcontact), known effectiveness of the intervention forchanging ... Hospital; Office of ContinuingEducation and Professional Development, Faculty of Medicine, University of Toronto, Toronto, CanadaFull list of author information is available at the end of the articlePerrier ... 63% of respondents reporte d they had used atleast one of the systematic reviews in the past 2 years tomake a decision [15,16]. However, data on the propor-tion of the sample size that responded...

Báo cáo sinh học: "Changes in the expression of genetic characteristics across cohorts in skeletal deformations of farmed salmonids" potx

... management conditionsdecreasing incidence of deformations in salmonids also decreased the amount of genetic variation available for selection. Genetic variation for deformationswas low or non-existent ... to the two production environments. Second, it is possible that after the splitting, the same families were independently subjected to deformations in bothenvironments. On the one hand, the ... one common factor induced the deformations in these genera-tions. In contrast, during the 15 years of running the breeding programme, wewere unable to detect any major ﬂaw in the production system...

Báo cáo sinh học: " Test for positional candidate genes for body composition on pig chromosome 6" pptx

... than the animal model, because it takes into account the information of the markers; but neither of the two models is able to ﬁnd the causal mutations. On the contrary, the QTL regression model, ... model used. The main difference between both models concerns the inclusion of the probabilities of the parental origin of the QTL alleles, whichis ignored in the animal model used. The association ... increasing the levels of other fat depots like backfat. The application of the results found in this previous study requires the ﬁnemapping of the QTL and ideally the identiﬁcation of the causal...

Báo cáo sinh học: "Impact of the use of cryobank samples in a selected cattle breed: a simulation study" potx

... studied the impact of various selection orientations (use of cryopreserved semen, conservation of male lines, etc.) only on the male path, because applying the above conditions on the female ... (similar to the one used in the Netherlands), where the semen of all young bulls is stored in the cryobank. In the simulations performed here, we investigated the impact of a one-time use (i.e. ... of the most useful tools for selection improvement, dissemination of genetic progress and ex situ conservation. In its Global Plan of Action, the FAO [1] recommended the implementation of...

Báo cáo sinh học: " Impact of changes in diet on the availability of land, energy demand and greenhouse gas emissions of agriculture" pot

... Parliament, European Council (2003) Directive 2003/30/EC of the Parliament and of the Council of 8 May 2003 on the promotion of the use of biofuels or other renewable fuels for transport, Brussels ... considerably in the scenarios. Keywords: diet; agriculture; energy. Introduction Agriculture has various impacts on the environment. One of the most obvious impacts is the emission of ... pesticides. The level of energy consumption and greenhouse gas emissions depends on the production system, for example, whether organic or not, and on the product mix, i.e., the mix of crops and...

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