Results 11 to 20 of about 15,277 (227)
An examination of scenarios to increase waterfowl hunting participation
Since the 1970s, waterfowl hunting participation has declined in the United States, which has resulted in socioeconomic consequences for waterfowl conservation and management.
Matthew P. Hinrichs +5 more
doaj +1 more source
: Photoperiod is an important environmental factor that influence seasonal reproduction behavior in bird and GnIH can play a function in this process through the reproductive axis, and some studies suggest that GnIH may have a direct role at the gonadal ...
Xiaoli Zhou +7 more
doaj +1 more source
Ammonia affects production performance and Toll-like receptor mRNA expression of laying ducks
Summary: The objective of this study was to assess the effects of different concentrations of ammonia on laying performance and Toll-like receptor (TLR) and cytokine mRNA expression in Shanma ducks.
Z. Tao +7 more
doaj +1 more source
Update on Reovirus Infections in Waterfowls. [PDF]
Farkas SL +5 more
europepmc +2 more sources
Evaluation of fall‐seeded cover crops for grassland nesting waterfowl in eastern South Dakota
Cover crops are experiencing a revival among Midwestern farmers, and we assessed their attractiveness and safety for nesting ducks in South Dakota. Nest success was markedly lower in cover crops than in perennial cover during both years of our study, including 2019 which was a best‐case scenario for cover crops, with extremely wet conditions delaying ...
Charles W. Gallman +3 more
wiley +1 more source
: Resveratrol, a natural antioxidant, anti-inflammatory plant extract, was found to have a protective effect in poultry subjected to heat stress. In this study, we strove to characterize resveratrol on intestinal of duck exposed to acute heat stress and ...
Chen Yang +8 more
doaj +1 more source
Understanding source-sink dynamics of game birds is essential to harvest and habitat management but acquiring this information is often logistically and financially challenging using traditional methods of population surveys and banding studies.
Paul Ashley +4 more
doaj +1 more source
In quantitative PCR research, appropriate reference genes are key to determining accurate mRNA expression levels. In order to screen the reference genes suitable for detecting gene expression in tissues of the reproductive axis, a total of 420 (males and
Bei-Bei Zhang +5 more
doaj +1 more source
Both hypothalamic neurotransmitters and serum steroid hormones are impacted by photoperiod and have effects on physiology and seasonal reproductive.
Yanglong Xu +25 more
doaj +1 more source
Wetland permanence, the duration and frequency that surface water is present, affects biological communities and whether wetlands are protected under legislation in some jurisdictions.
James E. Paterson +2 more
doaj +1 more source

