scholarly journals Signature selection analysis reveals candidate genes associated with production traits in Iranian sheep breeds

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Leila Mohamadipoor Saadatabadi ◽  
Mohammadreza Mohammadabadi ◽  
Zeinab Amiri Ghanatsaman ◽  
Olena Babenko ◽  
Ruslana Stavetska ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Water Status ◽  
Fixation Index ◽  
Human Consumption ◽  
Arid Environments ◽  
Production Traits ◽  
Wool Production ◽  
Sheep Breeds ◽  
The World ◽  
Hair Follicle Development

Abstract Background Sheep were among the first animals to be domesticated. They are raised all over the world and produce a major scale of animal-based protein for human consumption and play an important role in agricultural economy. Iran is one of the important locations for sheep genetic resources in the world. Here, we compared the Illumina Ovine SNP50 BeadChip data of three Iranian local breeds (Moghani, Afshari and Gezel), as a population that does not undergone artificial breeding programs as yet, and five other sheep breeds namely East Friesian white, East Friesian brown, Lacaune, DorsetHorn and Texel to detect genetic mechanisms underlying economical traits and daptation to harsh environments in sheep. Results To identify genomic regions that have been targeted by positive selection, we used fixation index (Fst) and nucleotide diversity (Pi) statistics. Further analysis indicated candidate genes involved in different important traits such as; wool production included crimp of wool (PTPN3, NBEA and KRTAP20–2 genes), fiber diameter (PIK3R4 gene), hair follicle development (LHX2 gene), the growth and development of fiber (COL17A1 gene)), adaptation to hot arid environments (CORIN gene), adaptive in deficit water status (CPQ gene), heat stress (PLCB4, FAM107B, NBEA, PIK3C2B and USP43 genes) in sheep. Conclusions We detected several candidate genes related to wool production traits and adaptation to hot arid environments in sheep that can be applicable for inbreeding goals. Our findings not only include the results of previous researches, but also identify a number of novel candidate genes related to studied traits. However, more works will be essential to acknowledge phenotype- genotype relationships of the identified genes in our study.

scholarly journals A história da lã: da domesticação à atualidade

2019 ◽  
Vol 20 ◽  
pp. 65-76
Author(s):  
Virgínia Santos ◽  
Ângela Martins ◽  
Mário Silvestre ◽  
Severiano Silva ◽  
Jorge Azevedo
Keyword(s):  
Ethnic Group ◽  
Ethnic Groups ◽  
Genetic Factors ◽  
Morphological Characteristics ◽  
Poor Quality ◽  
Wool Production ◽  
Sheep Breeds ◽  
The World ◽  
Different Types ◽  
Sheep Production

ResumoA produção de lã foi durante muitos anos, em Portugal e em várias regiões do mundo, uma das principais razões da exploração ovina. Esta situação foi alterada com o aparecimento das fibras sintéticas. A produção de carne ou de leite tornaram-se então as principais aptidões económicas destes animais. De qualquer forma, sendo absolutamente necessário tosquiar anualmente os ovinos, a lã pode proporcionar um rendimento extra, principalmente nos ovinos com velo de qualidade superior. Portugal apresenta 16 raças autóctones de ovinos que se enquadram em três grandes grupos étnicos, Merino, Bordaleiro e Churro, de acordo com as suas características morfológicas externas e aptidões. Cada um destes grupos étnicos apresenta tipos de velos com características têxteis diferentes. É assumido que as raças de etnia churra proporcionam lã considerada de má qualidade, caracterizada por ser lisa e de toque áspero. Em contrapartida as raças do grupo étnico Merino são consideradas como produtoras de lã de qualidade, caracterizada por ser macia ao tato e apresentar fibras muito onduladas. As características corporais e têxteis que os ovinos apresentam relacionam-se não só com fatores genéticos, mas também com as condições do meio ambiente onde vivem. Pretende-se com este trabalho contribuir para o conhecimento da origem da lã e perceber a diferenciação das raças ovinas autóctones nos três grupos étnicos existentes em Portugal. Palavras-chave: lã, velo, merino Abstract Wool production has been for many years, in Portugal and in several regions of the world, one of the main reasons for sheep production. This situation changed with the appearance of synthetic fibres. The production of meat or milk has thus become the primary economic aptitude of these animals. In any case, since it is necessary to shear the sheep annually, wool can provide extra yield, especially in sheep with a fleece of superior quality. Portugal presents 16 autochthonous sheep breeds that fall into three large ethnic groups, Merino, Bordaleiro and Churro, according to their external morphological characteristics and aptitudes. Each of these ethnic groups has different types of veils with different textile characteristics. It is assumed that breeds of Churra ethnic group provide wool considered of poor quality, characterised by being smooth and rough touch. In contrast, the breeds of the Merino ethnic group are considered to be producers of quality wool, characterised by being soft to the touch and presenting very undulating fibres. The physical and textile characteristics that sheep present relate not only to genetic factors but also to the conditions of the environment in which they live. This work intends to contribute to the knowledge of the origin of wool and to understand the differentiation of native sheep breeds in the three ethnic groups that exist in Portugal. Keywords: wool, fleece, merino

scholarly journals Sunlight-assisted degradation of textile pollutants and phytotoxicity evaluation using mesoporous ZnO/g-C3N4 catalyst

RSC Advances ◽  
2021 ◽  
Vol 11 (43) ◽  
pp. 26800-26812
Author(s):  
H. Leelavathi ◽  
N. Abirami ◽  
R. Muralidharan ◽  
Helen P. Kavitha ◽  
S. Tamizharasan ◽  
...  
Keyword(s):  
Fresh Water ◽  
Human Consumption ◽  
The World ◽  
Mesoporous Zno

Accessibility of adequate safe and fresh water for human consumption is one of the most significant issues throughout the world and extensive research is being undertaken to resolve it.

Genetic evaluation of production traits between and within flocks of Merino sheep. I. Hogget fleece weights, body weight and wool quality

1989 ◽  
Vol 40 (2) ◽  
pp. 433 ◽  
Author(s):  
SI Mortimer ◽  
KD Atkins
Keyword(s):  
Body Weight ◽  
Environmental Effects ◽  
Genetic Variance ◽  
Research Centre ◽  
Production Traits ◽  
Merino Sheep ◽  
Wool Production ◽  
Phenotypic Correlations ◽  
Genetic And Phenotypic Correlations ◽  
Fleece Weight

Wool production traits were measured on Merino hogget ewes in an unselected multiple-bloodline flock over a 7-year period at Trangie Agricultural Research Centre, N.S.W. The traits measured were greasy fleece weight (GFW), skirted fleece weight (SKFW), yield (Y), clean fleece weight (CFW), fibre diameter (FD), body weight (BWT) and staple length (SL). These measurements were used to examine genetic differences between and within flocks of Merino sheep, and to estimate heritability of and genetic and phenotypic correlations among these traits. Significant strain, flock within strain and flock effects were present for all traits. Interactions between these effects and year were non-significant. Within-flock genetic variance was always larger than between-flock within strain genetic variance for each trait. The influence of environmental effects on these traits was also examined. The environmental effects of birth-rearing type, age at observation and age of dam together accounted for about 7-10% of the total within-flock variation in fleece weights and body weight.After adjusting for significant environmental effects, paternal half-sib heritability estimates were 0.29 �. 0.06 for GFW, 0.22 � 0.05 for SKFW, 0.35 � 0.05 for Y, 0.30 �0.06 for CFW, 0.48 �0.07 for FD, 0.34 �. 0.06 for BWT and 0.44 �0.07 for SL. Estimates for genetic and phenotypic correlations were in agreement with published estimates except for the genetic correlation between CFW and FD (0.40 �. 0.11), and the genetic correlations involving BWT, which were essentially zero. The implications of the results of this study for the genetic improvement of Merino sheep for wool production are discussed.

International Wool Study Group

1950 ◽  
Vol 4 (3) ◽  
pp. 545-546
Keyword(s):  
World Trade ◽  
Study Group ◽  
Wool Production ◽  
The World ◽  
Intergovernmental Collaboration ◽  
First Time

The International Wool Study Group met at London from November 7 to 9, 1949. The meeting noted that world wool production had increased slightly since the war to a point where it was equal to prewar production. The group for the first time decided to release for publication its report on the world wool situation and reports on the wool situation in member countries, unless requested otherwise; On the basis of review it was decided that no immediate problems called for intergovernmental collaboration in world trade of wool; although it was recognized that the problem of surplus stocks which had led to the establishment of the group in 1946 had largely disappeared, it was felt that the group would prove a useful means for the improvement of wool statistics and a useful body to which world wool problems could be referred.

149 Integration of Selection Signatures Analyses and Weighted Single-step GWAS to Prioritize Candidate Genes for Body Conformation Traits in Pigs

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 76-77
Author(s):  
Seyed Milad Vahedi ◽  
Siavash Salek Ardestani ◽  
Duy Ngoc Do ◽  
Karim Karimi ◽  
Younes Miar
Keyword(s):  
Candidate Genes ◽  
Complex Traits ◽  
Body Height ◽  
Single Step ◽  
Fixation Index ◽  
Nucleotide Polymorphisms ◽  
Selection Signatures ◽  
Body Conformation ◽  
Yorkshire Pigs ◽  
Estimated Breeding Values

Abstract Body conformation traits such as body height (BH) and body length (BL) have been included in the swine industry’s selection criteria. The objective of this study was to identify the quantitative trait loci (QTLs) and candidate genes for pig conformation traits using an integration of selection signatures analyses and weighted single-step GWAS (WssGWAS). Body measurement records of 5,593 Yorkshire pigs of which 598 animals were genotyped with Illumina 50K panel were used. Estimated breeding values (EBVs) for BH and BL were computed using univariate animal models. Genotyped animals were grouped into top 5% and bottom 5% based on their EBVs, and selection signatures analyses were performed using fixation index (Fst), FLK, hapFLK, and Rsb statistics, which were then combined as a Mahalanobis distance (Md) framework. The WssGWAS was conducted to detect the single nucleotide polymorphisms (SNPs) associated with the studied traits. The top 1% SNPs (n=530) from Md distribution that overlapped with the top 1% SNPs from WssGWAS (n = 530) were used to detect the candidate genes. A total of 31 and six overlapped SNPs were found to be associated with BH and BL, respectively. Several candidate genes were identified for BH (PARVA, DCDC1, SYT1, CASTOR2, RGSL1, RGS8, RBMS3, TGFBR2, and HS6ST1) and BL (SNTB1, AK7, PAPOLA, KSR1, CHODL, and BMP2), explaining 2.58% and 0.42% of the trait’s genetic variation, respectively. Our results indicated that integrating data from the signatures of selection tests with WssGWAS could help elucidate genomic regions underlying complex traits.

scholarly journals Candidate genes for production traits in Nelore beef cattle

2012 ◽  
Vol 11 (4) ◽  
pp. 4138-4144 ◽  
Author(s):  
P.C. Tizioto ◽  
S.L. Meirelles ◽  
R.R. Tulio ◽  
A.N. Rosa ◽  
M.M. Alencar ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Candidate Genes ◽  
Production Traits

scholarly journals Chapter 8 Swelling and shrinking soils

2020 ◽  
Vol 29 (1) ◽  
pp. 223-242 ◽  
Author(s):  
Lee Jones ◽  
Vanessa Banks ◽  
Ian Jefferson
Keyword(s):  
Arid Environments ◽  
Local Site ◽  
Geotechnical Characterization ◽  
Significant Damage ◽  
The World ◽  
The Uk ◽  
The Cost ◽  
Structural Engineers ◽  
Semi Arid ◽  
Swelling And Shrinking

AbstractSwelling and shrinking soils are soils that can experience large changes in volume due to changes in water content. This may be due to seasonal changes in moisture content, local site changes such as leakage from water supply pipes or drains, changes to surface drainage and landscaping, or following the planting, removal or severe pruning of trees or hedges. These soils represent a significant hazard to structural engineers across the world due to their shrink–swell behaviour, with the cost of mitigation alone running into several billion pounds annually. These soils usually contain some form of clay mineral, such as smectite or vermiculite, and can be found in humid and arid/semi-arid environments where their expansive nature can cause significant damage to properties and infrastructure. This chapter discusses the properties and costs associated with shrink–swell soils, their formation and distribution throughout the UK and the rest of the world, and their geological and geotechnical characterization. It also considers the mechanisms of shrink-swell soils and their behaviour, reviewing strategies for managing them in an engineering context, before finally outlining the problem of trees and shrink–swell soils.

scholarly journals Lamb Meat Quality and Carcass Evaluation of Five Autochthonous Sheep Breeds: Towards Biodiversity Protection

Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3222
Author(s):  
Maria Giovanna Ciliberti ◽  
Antonella Santillo ◽  
Rosaria Marino ◽  
Elena Ciani ◽  
Mariangela Caroprese ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Meat Quality ◽  
Fatty Acid Content ◽  
Principal Component ◽  
Human Consumption ◽  
Sheep Breeds ◽  
Fatty Acids Profile ◽  
Lamb Meat

In the present study, the evaluation of the carcasses and meat quality, in terms of chemical composition and fatty acid profile, of lambs from five autochthonous sheep breeds (Altamurana, Bagnolese, Gentile di Puglia, Laticauda, and Leccese) reared in continental Southern Italy, were studied. All the carcasses were evaluated according to the EU Mediterranean classification system for carcasses weighing less than 13 kg. Meat chemical composition and fatty acids profile were assessed on both loin and leg commercial cuts. Fatty acid composition of loin resulted in differences among breeds, displaying lower values of saturated fatty acid in Altamurana, Bagnolese, and Leccese breeds and the highest content of polyunsaturated fatty acid in the Altamurana breed. Principal component analysis grouped lamb according to fatty acid content and to conjugated linoleic acid (CLA), omega n-3 and n-6 fatty acids; thus, Altamurana, Bagnolese, and Leccese breeds are characterized by the highest values of CLA content. Our data demonstrated that lamb meat from autochthonous breed has good carcass quality and the content of CLA, n-3, and n-6 was valuable for human consumption; therefore, the valorisation of local meat quality can help to avoid the extinction of the autochthonous breed offering to the market and consumer’s high nutritive products.

scholarly journals Diseases of Gastropoda

2022 ◽  
Vol 12 ◽  
Author(s):  
Michelle F. O’Brien ◽  
Sarah Pellett
Keyword(s):  
Fresh Water ◽  
Food Source ◽  
Negative Impact ◽  
Animal Health ◽  
Etiological Agent ◽  
Human Consumption ◽  
Intermediate Hosts ◽  
The World ◽  
Herpesvirus 1 ◽  
World Organisation

Gastropods (class Gastropoda) form the largest of the classes in the phylum Mollusca and inhabit terrestrial, fresh water and marine environments. A large number of these species are of major conservation importance and are an essential component of ecosystems. Gastropods may be deemed as pests, having a negative impact in horticulture and agriculture, whereas others may be used as a food source for human consumption and therefore are beneficial. Gastropods are susceptible to primary diseases and also act as intermediate hosts for diseases which affect other animals, including humans. The diseases described include two that are notifiable to the World Organisation for Animal Health (OIE): Xenohaliotis californiensis and Abalone viral ganglioneuritis caused by Haliotid herpesvirus-1 (HaHV-1). Research into the diseases of gastropods has often focused on those species that act as intermediate disease hosts, those that are used in research or those cultured for food. In this paper we review the viral, bacterial, fungal, parasitic and miscellaneous conditions that have been reported in gastropods and mention some of the factors that appear to predispose them to disease. The pathogenicity of a number of these conditions has not been fully ascertained and more research is needed into specifying both the etiological agent and significance in some of the diseases reported.

scholarly journals The status of the Hungarian Merino sheep breed compared to the other merino breeds

2016 ◽  
pp. 151-156
Author(s):  
Mária Szabó ◽  
Szilvia Kusza ◽  
István Csízi ◽  
István Monori
Keyword(s):  
Gene Pool ◽  
Genetic Resource ◽  
Sheep Breed ◽  
The Other ◽  
Drastic Reduction ◽  
Merino Sheep ◽  
Sheep Breeds ◽  
The World ◽  
The Status ◽  
Over Time

Merino and Merino-derived sheep breeds have been widely known and distributed across the world, both as purebred and admixed populations. They represent a diverse genetic resource which over time has been used as the basis for the development of new breeds. In spite of this, their gene-pool potential is still unexplored. The Merino sheep represent the most important sheep resource of the Hungarian husbandry. It has the largest amount of individuals between both of the stock and commercial flocks. But in Europe the Merino stocks went through a drastic reduction in number. Thus these breeds became endangered in several countries as well as in Hungary. In this study we would like to present the recent status of different Merino breeds of the world to ground our further phylogenetic research with the Hungarian Merino breed.

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