Publications by authors named "N Rooney"
Free-living wildlife across Africa is found across expansive rangelands, frequently interacting with pastoral communities, their livestock, and domestic dogs (Canis familiaris). African wildlife populations are threatened by development, poaching and disease. Infectious diseases have caused significant declines, sabotaging conservation efforts.
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- This study explores the effects of using insect meals instead of traditional fishmeal and fish oil in the diets of rainbow trout on their gut microbiota.
- Over a 12-week feeding trial, different amounts of black soldier fly, cricket, and superworm meals were tested, revealing that cricket meal decreased microbial diversity while black soldier fly raised levels of certain bacteria.
- Overall, the research indicates that insect-based diets can significantly change the gut microbiota composition in rainbow trout, highlighting the potential of black soldier fly meal as a beneficial ingredient.
Historically, humans have managed food systems to maximize productivity. This pursuit has drastically modified terrestrial and aquatic ecosystems globally by reducing species diversity and body size while creating very productive, yet homogenized, environments. Such changes alter the structure and function of ecosystems in ways that ultimately erode their stability.
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- Dogs can differentiate between human stress and relaxation scents, but the impact on their cognitive behavior was previously unexplored.
- A cognitive bias task showed that when exposed to human stress odors, dogs were less likely to approach food bowls placed in ambiguous locations, indicating they may exhibit risk-reduction behaviors.
- The study suggests that olfactory cues of human stress can influence dogs' learning and cognition, highlighting potential implications for dog welfare and their working abilities.