Results 81 to 90 of about 189,173 (351)

The history and importance of private lands for North American waterfowl conservation

open access: yesWildlife Society Bulletin, 2019
Waterfowl conservation in North America provides an example of an abundant wildlife resource that was driven to alarmingly low levels as a result of unregulated exploitation of its populations and habitats, but which has since recovered because of ...
Michael G. Brasher   +10 more
doaj   +1 more source

Isolation and identification of Riemerella anatipestifer from ducks in Malaysia [PDF]

open access: yes, 2011
Riemerella anatipestifer is the primary etiological agent of contagious septicemic diseases among ducks. The study is the first atempt to isolate and identify R. anatipestifer from ducks in Malaysia. In this study, ten diseases Khaki-Campbell ducks and
Bejo, Siti Khairani   +2 more
core  

Ducks on the torus: existence and uniqueness

open access: yes, 2009
We show that there exist generic slow-fast systems with only one (time-scaling) parameter on the two-torus, which have canard cycles for arbitrary small values of this parameter.
A Denjoy   +8 more
core   +1 more source

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

open access: yesAnimal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke   +9 more
wiley   +1 more source

Interspecific variations in external and internal egg quality among various captive avian species from Punjab, Pakistan

open access: yesBrazilian Journal of Biology, 2021
Present study was planned to determine variations in external and internal quality egg parameters of different avian species including ostrich Struthio camelus, ducks Anas platyrhynchos, chicken Gallus gallus, turkeys Meleagris gallopavo and grey ...
T. Sadaf   +11 more
doaj   +1 more source

Comparative Meta‐Analysis of Antimicrobial Peptides in Aquatic and Terrestrial Livestock Species

open access: yesAnimal Research and One Health, EarlyView.
A global meta‐analysis of 58 studies (926 effect sizes and 29 species across five taxa) revealed that dietary antimicrobial peptides generally improve growth performance, blood metabolites, and immune responses. The greatest benefits were observed in omnivorous livestock, such as pigs and chickens. Dose‐duration effects were evident. An optimal outcome
Lily Liu   +4 more
wiley   +1 more source

DUCK [PDF]

open access: yesProceedings of the 27th Conference on l'Interaction Homme-Machine, 2015
Touch screens rapidly and significantly replace physical keyboards on mobile devices. Hence, text entry is now dependent on software (or virtual) keyboards that are widely used by sighted people, but raise accessibility issues for visually impaired users. These users rely on tactile exploration with vocal feedback of the whole screen for entering text,
Philippe Roussille   +2 more
openaire   +1 more source

Developmental Characteristics of the Embryonic Liver Tissue and Long‐Term Culture of Primary Hepatocytes in Duck

open access: yesAnimal Research and One Health, EarlyView.
Liver development was investigated at different embryonic ages (EAs). Furthermore, numerous hepatocyte media were formulated and evaluated. These results could elaborate the developmental characteristics of duck liver tissue and determine the most suitable medium for the proliferation and characteristic maintenance of hepatocytes in vitro, which would ...
Jie Wei   +7 more
wiley   +1 more source

Comparison of Carcass Percentage Among Four Duck Breeds under Traditional Rearing Conditions

open access: yesIndonesian Journal of Agricultural Research
The research aims to determine the extent of differences in the carcass composition of four types of ducks using semi-intensive cultivation. A total of 16 ducks aged 3 months were used as experimental units.
Harapin Hafid
doaj   +1 more source

Distribution of contaminants in the environment and wildlife habitat use: a case study with lead and waterfowl on the Upper Texas Coast [PDF]

open access: yes, 2019
The magnitude and distribution of lead contamination remain unknown in wetland systems. Anthropogenic deposition of lead may be contributing to negative population-level effects in waterfowl and other organisms that depend on dynamic wetland habitats ...
Conway, Warren C.   +5 more
core   +1 more source

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