Publications by authors named "Adam Abied"
Article Synopsis
- The study investigates how applying animal manure affects soil microbial ecology in farmlands, utilizing a meta-analysis of 2303 studies and additional soil sample sequencing.
- Findings indicate that manure application boosts bacterial diversity while reducing fungal diversity, with notable shifts in specific microbial populations.
- The research highlights potential risks associated with altering microbial communities in cultivated soils, emphasizing the need for further exploration of manure recovery processes in farm sewage treatment.
With climate change bound to affect food and feed production, emphasis will shift to resilient and adapted indigenous livestock to sustain animal production. However, indigenous livestock comprise several varieties, strains and ecotypes whose genomes are poorly characterized. Here, we investigated genomic variation in an African thin-tailed Desert Sheep sampled in Sudan, using 600K genotype data generated from 92 individuals representing five ecotypes.
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- - The study investigates the genetic diversity and selection signatures of Tibetan sheep, which are well-adapted to high altitudes and important for local agriculture, identifying over 30 million SNPs and 5 million indels compared to the ovine genome.
- - By utilizing various analytical approaches, the research uncovers key candidate genes associated with hypoxia response, meat quality, disease resistance, and coat color, indicating genetic factors linked to adaptation and production traits.
- - Physiological tests show that Tibetan sheep have enhanced oxygen-carrying capabilities, suggesting they are better suited for their high-altitude environment compared to other sheep breeds, enhancing our understanding of traits important for livestock breeding.
Article Synopsis
- Researchers studied the autozygosity of five local Chinese sheep breeds by analyzing high-density SNP Chip data to identify runs of homozygosity (ROH), revealing how inbreeding has shaped their genomes.
- Out of 96 sheep samples, they identified 3046 ROHs, mostly in segments longer than 1-5 Mb, with an overall average genome coverage of about 12%.
- The study also found specific genomic regions associated with traits such as disease resistance and growth, suggesting the need for tailored breeding and conservation strategies for these indigenous breeds.
Article Synopsis
- * A genome-wide association study identified two significant SNPs in the MC1R gene linked to coat colour in 75 Chinese Tan sheep, with one SNP causing an amino acid change associated with white coat colour.
- * Genotype analysis showed white sheep were homozygous (GG) while black-head sheep were mostly heterozygous (GA), suggesting that the identified mutation impacts coat colour variation in these sheep breeds.
Objectives: Genome-wide association studies (GWAS) represent a powerful approach to detecting candidate genes for economically important traits in livestock. Our aim was to identify promising candidate muscle development genes that affect net meat weight (NMW) and validate these candidate genes in cattle.
Materials And Methods: Using a next-generation sequencing (NGS) dataset, we applied ~ 12 million imputed single nucleotide polymorphisms (SNPs) from 1,252 Simmental cattle to detect genes influencing net meat yield by way of a linear mixed model method.
Background: Litter size is the most important reproductive trait which plays a crucial role in goat production. Therefore, improvement of litter size trait has been of increasing interest in goat industry as small improvement in litter size may lead to large profit. The recent Cashmere goat breeding program produced a high-reproductive genetic line of Arbas Cashmere goat.
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- Domestic sheep have adapted to various environments through natural and artificial selection, resulting in diverse traits and genetic characteristics.
- A study assessing genomic diversity in five Chinese native sheep breeds revealed a high percentage of informative SNPs and low to moderate population differentiation, suggesting geographical and phenotypic clustering patterns.
- The research identified key genomic regions linked to environmental adaptation and important traits, providing valuable insights for the sustainable use and conservation of sheep genetic resources.
Article Synopsis
- - The study analyzes six Chinese goat populations to understand how selection affects genomic diversity, focusing on characteristics like runs of homozygosity (ROHs) and genetic differentiation, using SNP 50K Illumina beads.
- - Results indicate that longer ROH lengths and higher inbreeding levels correlate with intense selection pressures, particularly in Guangfeng goats, while revealing relationships between certain genes and reproduction.
- - The investigation identifies multiple candidate genes linked to goat fecundity, with significant selection signatures showing differentiation between high and low reproduction groups, thus enhancing breeding strategies for genetic resource conservation.
Adaptation Mechanisms of Small Ruminants to Environmental Heat Stress.
Animals (Basel)
February 2019
Small ruminants are the critical source of livelihood for rural people to the development of sustainable and environmentally sound production systems. They provided a source of meat, milk, skin, and fiber. The several contributions of small ruminants to the economy of millions of rural people are however being challenged by extreme heat stress difficulties.
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