Results 101 to 110 of about 13,650 (237)

Managing the Threat of Subsidized Predators for a Threatened Shorebird

open access: yesAnimal Conservation, EarlyView.
Subsidized predators—native predators that have become more common due to human activities—challenge the persistence of many at‐risk prey species and require creative solutions beyond lethal predator control. In an 8‐year study, we placed small wire cages over western snowy plover nests that allow passage of plovers, but not their predators, and ...
R. R. Swaisgood   +4 more
wiley   +1 more source

Relations of environmental contaminants, algal toxins, and diet with the reproductive success of American alligators on Florida Lakes [PDF]

open access: yes, 2001
(113 page ...
Arnold, Beverly S.   +3 more
core  

Respiration and energetics of embryonic development in a large altricial bird, the Australian pelican (Pelecanus conspicillatus) [PDF]

open access: yes, 2002
We examined whether the previously reported low cost of embryonic development in pelicans could be attributed to a more efficient conversion of egg energy to hatchling tissues as a result of high initial egg water content, low embryonic metabolic rate ...
Baudinette, R.   +3 more
core   +1 more source

Optimization of Eggshell Calcium Use for Improving the Physical Quality of Whey Protein Isolate-based Edible Films [PDF]

open access: yesBIO Web of Conferences
Edible films based on biopolymers are increasingly popular as environmentally friendly and functional food packaging alternatives. One approach to improving the physical properties of edible films is by incorporating calcium derived from eggshell waste ...
Evanuarini Herly   +2 more
doaj   +1 more source

Perspectives on the Effect of Incubation Temperature on Pine Snake Hatchlings

open access: yesEthology, EarlyView.
Effect of timing of egg‐laying and incubation temperature on the possible phenology of events for early egg‐laying females (laying June 15, the earliest laying date), the mid‐laying date (July 4), and late egg‐laying females (July 17, the latest egg‐laying date). Based on data from many papers.
Joanna Burger
wiley   +1 more source

Comparison of regional eggshell porosity between the brood parasitic Brown-headed Cowbird (Molothrus ater) and its hosts: the Dickcissel (Spiza americana), and two non-parasitic relatives, the Red-winged Blackbird (Agelaius phoeniceus) and the Common Grackle (Quiscalus quiscula). [PDF]

open access: yes, 2012
The Brown-headed Cowbird (Molothrus ater) is a generalist brood parasite that lays eggs in the nests of many host species, including the Dickcissel (Spiza americana) and two non-parasitic relatives: the Red-winged Blackbird (Agelaius phoeniceus) and the ...
Childs, Brittany
core   +1 more source

Eggshell Quality Traits and Transcriptome Gene Screening Between Yunnong and Jingfen Chicken Breeds

open access: yesBiology
The eggshell quality traits in avian species, including Yunnong chickens (YN), are crucial for commercial and breeding purposes. The use of advanced biotechnologies, such as gene sequencing, has become increasingly common for identifying genetic markers ...
Zijian Li   +13 more
doaj   +1 more source

The Effect of Eggshell Quality on Hatchability of Pure Chicken Breeds

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
Hatchability is affected by a variety of factors. Eggshell quality plays very important role among these factors. In this work we analysed eggshell quality, hatchability and embryonic mortality of pure chicken breeds New Hampshire, Oravka, Plymouth Rock,
Cyril Hrnčár   +2 more
doaj  

Development of the abdominal musculature in the chicken embryo

open access: yesJournal of Anatomy, EarlyView.
In this study, we investigate anatomy, morphogenesis, segmental origin, and fiber formation of the abdominal musculature in the chicken embryo. We show that abdominal muscles arise from somites 24 to 28, and that the segmental identity of individual fibers in the abdominal muscle sheets is maintained.
Margarethe Draga   +6 more
wiley   +1 more source

EGGSHELL AND EGG CONTENT TRAITS IN PEKING DUCK EGGS FROM THE P44 RESERVE FLOCK RAISED IN POLAND [PDF]

open access: yes, 2007
The egg quality of Peking ducks was evaluated on three different dates (the beginning, peak, end) of the first egg laying period. During the laying period the following increases were noted: in egg weight (from 71.7 to 86.7 g), in length (from 61.9 to 65.
DARIUSZ KOKOSZYŃSKI   +2 more
core  

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