Results 61 to 70 of about 10,925 (255)

Effects of the inclusion of sunflower hulls in the diet on growth performance and digestive tract traits of broilers and pullets fed a broiler diet from zero to 21 d of age. A comparative study [PDF]

open access: yes, 2016
The effects of including 3% sunflower hulls (SFH) in the diet on growth performance, nutrient retention (TTAR), and gastrointestinal tract (GIT) traits were studied in chicks from zero to 21 d of age. Four treatments that resulted from the combination of
Camara Garcia, Lourdes   +4 more
core   +2 more sources

Temporal Variation in Early‐Life Conditions Impacts on Later‐Life Levels of Infection in Sex Specific Ways

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
Parasitism is a fundamental component of wild populations, but the factors that drive variation in the level of infection remain less clear. Here, we utilise a long‐term study population of seabirds to reveal how early life and current breeding conditions act differently between the sexes to impact natural variation in parasite burden. We find parasite
Hannah M. Ravenswater   +10 more
wiley   +1 more source

Graded requirement for the zygotic terminal gene, tailless, in the brain and tail region of the Drosophila embryo [PDF]

open access: yes, 1988
We have used hypomorphic and null tailless (tll) alleles to carry out a detailed analysis of the effects of the lack of tll gene activity on anterior and posterior regions of the embryo.
Lengyel, Judith A.   +2 more
core  

Dokaz virusa newcastleske bolesti molekularnim postupkom FTA-PCR [PDF]

open access: yes, 2010
The feasibility of using Flinders Technology Associates (FTA) filter papers to store the Newcastle disease virus (NDV), infected allantoic fluid (AF) and tissue samples, for the molecular detection of NDV by reverse transcriptase - polymerase chain ...
Kathaperumal Kumanan   +3 more
core   +1 more source

Omnivorous Diets of Sympatric Duck Species in a Subtropical East Asia Wetland Unveiled by Multi‐Marker DNA Metabarcoding

open access: yesEnvironmental DNA, Volume 7, Issue 5, September–October 2025.
The East Asian–Australasian Flyway (EAAF) is experiencing significant declines in migratory waterbird populations. Understanding the foraging ecology of waterbird species, particularly ducks, is crucial for monitoring and protecting their food sources and wetland habitats.
Pei‐Yu Huang   +6 more
wiley   +1 more source

STRUCTURE AND POSTNATAL DEVELOPMENT OF THE PROVENTRICULUS IN JAPANESE QUAIL [PDF]

open access: yesJournal of Veterinary and Animal Sciences, 1999
The structure and postnatal development of proventriculus in Japanese quail were studied using 72 quails aged from day-old to 60 days. The proventriculus was spindle-shaped and had a mucosa studded with nodules.
S. Maya, Lucy Pally
doaj  

ALIMENTARY CANAL ANATOMY AND HISTOLOGY OF THE WORKER TERMITE NEOTERMES BOSEI

open access: yesBiotropia: The Southeast Asian Journal of Tropical Biology, 2011
As social insects, termites live in a colony that consist of reproductive (drone and queen), and non-reproductive (soldiers and workers) castes. Workers obtain their food directly from wood, humus, and other substances that contain cellulose.
RIKA RAFFIUDIN   +2 more
doaj   +1 more source

Gut microbiome–diet interactions in wild birds

open access: yesJournal of Avian Biology, Volume 2025, Issue 5, September 2025.
Birds show global declines, and understanding the relationship between avian diet and fitness can both answer basic questions in physiological ecology and inform conservation efforts. Diet‐induced changes to the gut microbiome, the collection of microorganisms and their functional genes and metabolites inside the gut, may be of particular importance to
Jennifer J. Uehling, Jennifer L. Houtz
wiley   +1 more source

Effect of season and farming system on the quantity and nutritional quality of scavengeable feed resources and performance of village poultry in central Tanzania [PDF]

open access: yes, 2008
2 x 2 factorial study was conducted to assess the effect of season and farming system on the quantity and nutritional quality of scavengeable feed resources and the performance of village poultry in central Tanzania.
Goromela, E.H.   +3 more
core   +1 more source

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