48 research outputs found
Gender-Awareness amongst Brazilian Children Enrolled in Primary Education: Implications for Women’s Rights & Equality
The general objectives of this article were to investigate what are the perceptions of Brazilian children enrolled in primary education over gender-assigned roles and the place of women in society and to analyze what could be the impacts of their answers on the foreseeable future of women’s rights and equality in contemporary Brazil. This research was drawn from a qualitative approach and our research method was composed of data collection and data analysis through the use of surveys. Our main conclusions were that gender dynamics within the family core influences a lot the perception of children over gender hierarchies, which can result in repeating patterns of gender inequality and in reinforcing pre-assigned roles for women in society. Thus, the role of gender education is paramount in the task of helping these children challenge and question this unequal and often unjust power balance that takes place in their households. When asked about what they considered to be the role of women in society, the majority of the children surveyed answered that women should work and be responsible for activities such as taking care of the family or doing housework. This vision imposes a burden upon women to follow certain social roles as well as limits the future visions they have for themselves
Influence of surfactant-humectant adjuvants on physical properties, droplet size, and efficacy of glufosinate formulations
Glufosinate efficacy is inconsistent among weed species and under environmental conditions that favor rapid droplet drying. Surfactant-humectant adjuvants could maximize glufosinate efficacy by increasing wetting and penetration into the leaf surface while decreasing evaporation rate (ER). However, there is a lack of information in the literature about the interaction of surfactant-humectants adjuvants with glufosinate. The objective of this study was to investigate the influence of surfactanthumectant adjuvants on the physical properties, droplet size, and efficacy of two glufosinate formulations. Laboratory, greenhouse, and field studies were conducted at the Pesticide Application Technology Laboratory of the University of Nebraska- Lincoln. Treatment design was a 2 Ă— 5 factorial with two glufosinate formulations combined with five adjuvant treatments plus an untreated control. Density and viscosity of glufosinate solutions mostly increased with the addition of adjuvants. However, the influence of the adjuvants on dynamic surface tension (dST), static contact angle (sCA), and evaporation rate (ER) varied by glufosinate formulation, adjuvant, and relative humidity (RH). Under greenhouse conditions, an improvement in efficacy by adding adjuvants was mainly observed for Interline solutions. The addition of adjuvants to Interline solutions increased biomass reduction up to 19 and 35% for common lambsquarters (Chenopodium album L.) and kochia [Bassia scoparia (L.) A. J. Scott], respectively. Also, some of the adjuvants presented null or antagonistic influence on herbicide efficacy. No increase in control, biomass reduction, and mortality of horseweed (Erigeron canadensis L.) and Palmer amaranth (Amaranthus palmeri S. Watson) was observed with the use of adjuvants under field conditions. Herbicide-adjuvant-plant-environment interaction is complex. Thus, the use of surfactant-humectant adjuvants may not increase herbicide efficacy
Gender-Awareness amongst Brazilian Children Enrolled in Primary Education: Implications for Women’s Rights & Equality
The general objectives of this article were to investigate what are the perceptions of Brazilian children enrolled in primary education over gender-assigned roles and the place of women in society and to analyze what could be the impacts of their answers on the foreseeable future of women’s rights and equality in contemporary Brazil. This research was drawn from a qualitative approach and our research method was composed of data collection and data analysis through the use of surveys. Our main conclusions were that gender dynamics within the family core influences a lot the perception of children over gender hierarchies, which can result in repeating patterns of gender inequality and in reinforcing pre-assigned roles for women in society. Thus, the role of gender education is paramount in the task of helping these children challenge and question this unequal and often unjust power balance that takes place in their households. When asked about what they considered to be the role of women in society, the majority of the children surveyed answered that women should work and be responsible for activities such as taking care of the family or doing housework. This vision imposes a burden upon women to follow certain social roles as well as limits the future visions they have for themselves
Development of a 64 SNV panel for breed authentication in Iberian pigs and their derived meat products
9 Pág.Spanish legislation regulates the labelling of Iberian pig meat and dry-cured products, which are labelled as "IbĂ©rico" or "100% IbĂ©rico" when they come from Duroc x Iberian crossbred or Iberian purebred pigs. Although the analytical authentication of breed origin is not mandatory, a genetic diagnostic tool is demanded by producers and consumers. We have designed a 64 Single Nucleotide Variant genotyping panel displaying extreme allelic frequencies between Duroc and Iberian purebred samples. Average proportions of Iberian alleles of 0.99, 0.01, 0.77 and 0.48 were estimated by admixture clustering analysis of known origin samples, for Iberian and Duroc purebred, 75% Iberian and 50% Iberian classes, respectively. A supervised analysis with 1419 samples showed some overlapping between contiguous classes, but the calculated degrees of separability ranged from 0.800 to 0.996, exceeding the threshold value (0.70) for considering suitable for prediction. Therefore, this panel is a useful genetic tool to infer purebred or crossbred Iberian origin of live animals, meat and dry-cured products.This work was funded by the RZ2012-00006-00-00 grant from the Instituto Nacional de InvestigaciĂłn y TecnologĂa Agraria y Alimentaria (INIA). We want to thanks to breeder association AECERIBER and interprofessional association ASICI for providing samples.Peer reviewe
Whole-genome sequencing of European autochthonous and commercial pig breeds allows the detection of signatures of selection for adaptation of genetic resources to different breeding and production systems
Background
Natural and artificial directional selection in cosmopolitan and autochthonous pig breeds and wild boars have shaped their genomes and resulted in a reservoir of animal genetic diversity. Signatures of selection are the result of these selection events that have contributed to the adaptation of breeds to different environments and production systems. In this study, we analysed the genome variability of 19 European autochthonous pig breeds (Alentejana, BĂsara, Majorcan Black, Basque, Gascon, Apulo-Calabrese, Casertana, Cinta Senese, Mora Romagnola, Nero Siciliano, Sarda, Krškopolje pig, Black Slavonian, Turopolje, Moravka, Swallow-Bellied Mangalitsa, Schwäbisch-Hällisches Schwein, Lithuanian indigenous wattle and Lithuanian White old type) from nine countries, three European commercial breeds (Italian Large White, Italian Landrace and Italian Duroc), and European wild boars, by mining whole-genome sequencing data obtained by using a DNA-pool sequencing approach. Signatures of selection were identified by using a single-breed approach with two statistics [within-breed pooled heterozygosity (HP) and fixation index (FST)] and group-based FST approaches, which compare groups of breeds defined according to external traits and use/specialization/type.
Results
We detected more than 22 million single nucleotide polymorphisms (SNPs) across the 23 compared populations and identified 359 chromosome regions showing signatures of selection. These regions harbour genes that are already known or new genes that are under selection and relevant for the domestication process in this species, and that affect several morphological and physiological traits (e.g. coat colours and patterns, body size, number of vertebrae and teats, ear size and conformation, reproductive traits, growth and fat deposition traits). Wild boar related signatures of selection were detected across all the genome of several autochthonous breeds, which suggests that crossbreeding (accidental or deliberate) occurred with wild boars.
Conclusions
Our findings provide a catalogue of genetic variants of many European pig populations and identify genome regions that can explain, at least in part, the phenotypic diversity of these genetic resources.info:eu-repo/semantics/publishedVersio
Genome-wide detection of copy number variants in European autochthonous and commercial pig breeds by whole-genome sequencing of DNA pools identified breed-characterising copy number states
In this study, we identified copy number variants (CNVs) in 19 European autochthonous pig
breeds and in two commercial breeds (Italian Large White and Italian Duroc) that represent
important genetic resources for this species. The genome of 725 pigs was sequenced using a
breed-specific DNA pooling approach (30–35 animals per pool) obtaining an average depth
per pool of 429. This approach maximised CNV discovery as well as the related copy
number states characterising, on average, the analysed breeds. By mining more than
17.5 billion reads, we identified a total of 9592 CNVs (~683 CNVs per breed) and 3710
CNV regions (CNVRs; 1.15% of the reference pig genome), with an average of 77 CNVRs per
breed that were considered as private. A few CNVRs were analysed in more detail, together
with other information derived from sequencing data. For example, the CNVR encompassing the KIT gene was associated with coat colour phenotypes in the analysed breeds,
confirming the role of the multiple copies in determining breed-specific coat colours. The
CNVR covering the MSRB3 gene was associated with ear size in most breeds. The CNVRs
affecting the ELOVL6 and ZNF622 genes were private features observed in the Lithuanian
Indigenous Wattle and in the Turopolje pig breeds respectively. Overall, the genome
variability unravelled here can explain part of the genetic diversity among breeds and might
contribute to explain their origin, history and adaptation to a variety of production system
Genome-wide detection of copy number variants in European autochthonous and commercial pig breeds by whole-genome sequencing of DNA pools identified breed-characterising copy number states
In this study, we identified copy number variants (CNVs) in 19 European autochthonous pig
breeds and in two commercial breeds (Italian Large White and Italian Duroc) that represent
important genetic resources for this species. The genome of 725 pigs was sequenced using a
breed-specific DNA pooling approach (30–35 animals per pool) obtaining an average depth
per pool of 429. This approach maximised CNV discovery as well as the related copy
number states characterising, on average, the analysed breeds. By mining more than
17.5 billion reads, we identified a total of 9592 CNVs (~683 CNVs per breed) and 3710
CNV regions (CNVRs; 1.15% of the reference pig genome), with an average of 77 CNVRs per
breed that were considered as private. A few CNVRs were analysed in more detail, together
with other information derived from sequencing data. For example, the CNVR encompassing the KIT gene was associated with coat colour phenotypes in the analysed breeds,
confirming the role of the multiple copies in determining breed-specific coat colours. The
CNVR covering the MSRB3 gene was associated with ear size in most breeds. The CNVRs
affecting the ELOVL6 and ZNF622 genes were private features observed in the Lithuanian
Indigenous Wattle and in the Turopolje pig breeds respectively. Overall, the genome
variability unravelled here can explain part of the genetic diversity among breeds and might
contribute to explain their origin, history and adaptation to a variety of production system
Genome-wide detection of copy number variants in European autochthonous and commercial pig breeds by whole-genome sequencing of DNA pools identified breed-characterising copy number states
In this study, we identified copy number variants (CNVs) in 19 European autochthonous pig
breeds and in two commercial breeds (Italian Large White and Italian Duroc) that represent
important genetic resources for this species. The genome of 725 pigs was sequenced using a
breed-specific DNA pooling approach (30–35 animals per pool) obtaining an average depth
per pool of 429. This approach maximised CNV discovery as well as the related copy
number states characterising, on average, the analysed breeds. By mining more than
17.5 billion reads, we identified a total of 9592 CNVs (~683 CNVs per breed) and 3710
CNV regions (CNVRs; 1.15% of the reference pig genome), with an average of 77 CNVRs per
breed that were considered as private. A few CNVRs were analysed in more detail, together
with other information derived from sequencing data. For example, the CNVR encompassing the KIT gene was associated with coat colour phenotypes in the analysed breeds,
confirming the role of the multiple copies in determining breed-specific coat colours. The
CNVR covering the MSRB3 gene was associated with ear size in most breeds. The CNVRs
affecting the ELOVL6 and ZNF622 genes were private features observed in the Lithuanian
Indigenous Wattle and in the Turopolje pig breeds respectively. Overall, the genome
variability unravelled here can explain part of the genetic diversity among breeds and might
contribute to explain their origin, history and adaptation to a variety of production system
Describing variability in pig genes involved in coronavirus infections for a One Health perspective in conservation of animal genetic resources
Coronaviruses silently circulate in human and animal populations, causing mild to severe diseases.
Therefore, livestock are important components of a ?One Health? perspective aimed to control
these viral infections. However, at present there is no example that considers pig genetic resources
in this context. In this study, we investigated the variability of four genes (ACE2, ANPEP and DPP4
encoding for host receptors of the viral spike proteins and TMPRSS2 encoding for a host proteinase)
in 23 European (19 autochthonous and three commercial breeds and one wild boar population) and
two Asian Sus scrofa populations. A total of 2229 variants were identifed in the four candidate genes:
26% of them were not previously described; 29 variants afected the protein sequence and might
potentially interact with the infection mechanisms. The results coming from this work are a frst
step towards a ?One Health? perspective that should consider conservation programs of pig genetic
resources with twofold objectives: (i) genetic resources could be reservoirs of host gene variability
useful to design selection programs to increase resistance to coronaviruses; (ii) the describedFE1B-06B2-126F | Jos? Pedro Pinto de Ara?joN/