Publications by authors named "J W Hatt"
The Potential of an Artificially Ultraviolet B Irradiated Hay as a Source of Vitamin D.
J Anim Physiol Anim Nutr (Berl)
January 2025
Article Synopsis
- Roughage in herbivore diets can be an important source of vitamin D, with levels varying based on factors like plant species, maturity, and UVB exposure.
- UVB light promotes the conversion of provitamin D to vitamin D, which significantly impacts vitamin D content in forages.
- In a study, ergocalciferol levels in roughage increased significantly with UVB exposure, highlighting the potential of hay as a valuable vitamin D source for herbivores and emphasizing the need to consider UVB's effects in both practical and research contexts.
Rabbits have hypselodont (ever-growing) teeth; dental growth constantly replaces dental tissue lost due to abrasion and attrition. It has been suggested that rabbits must have high mineral requirements, in particular for calcium, to fuel this constant tooth growth. However, this assumption ignores the fact that tooth wear represents finely ground tissue that is not lost to the body but swallowed during food processing.
View Article and Find Full Text PDFRecent genomic analyses have revealed that microbial communities are predominantly composed of persistent, sequence-discrete species and intraspecies units (genomovars), but the mechanisms that create and maintain these units remain unclear. By analyzing closely-related isolate genomes from the same or related samples and identifying recent recombination events using a novel bioinformatics methodology, we show that high ecological cohesiveness coupled to frequent-enough and unbiased (i.e.
View Article and Find Full Text PDFArticle Synopsis
- The study investigated how extreme halophiles in salt-rich environments react to repeated dilution of salinity, showing that their dominance shifts based on the level of stress.
- Under moderate stress (20% salinity), dominant species like Haloquadratum walsbyi and Salinibacter ruber thrived, while under stronger stress (13% salinity), they were replaced by more adaptable species.
- These findings suggest that genus-level diversity is crucial for ecological resilience, with species replacements occurring alongside viral co-evolution, highlighting the dynamic adaptability of brine microbial communities.
Advancements within fecal source tracking (FST) studies are complicated by a lack of knowledge regarding the genetic content and distribution of fecally shed microbial populations. To address this gap, we performed a systematic literature review and curated a large collection of genomes (n = 26,018) representing fecally shed prokaryotic species across broad and narrow source categories commonly implicated in FST studies of recreational waters (i.e.
View Article and Find Full Text PDF