Results 11 to 20 of about 887,796 (336)

A meta-analysis on the relationship between goose age and egg weight

open access: yesJournal of Applied Poultry Research, 2021
SUMMARY: Although many studies have attempted to determine the effect of goose age on egg weight, the relationship remains unclear. We conducted a meta-analysis of the relevant literature in an attempt to provide clarity on this question.
G. Liu, X. Zhao, Z. Chen, Z. Guo
doaj   +1 more source

G protein-coupled receptor kinase-2 (GRK-2) regulates serotonin metabolism through the monoamine oxidase AMX-2 in Caenorhabditis elegans. [PDF]

open access: yes, 2017
G protein-coupled receptors (GPCRs) regulate many animal behaviors. GPCR signaling is mediated by agonist-promoted interactions of GPCRs with heterotrimeric G proteins, GPCR kinases (GRKs), and arrestins.
Aryal, Dipendra K.   +5 more
core   +2 more sources

Effect of inoculation route on the production of antibodies and histological characteristics of the spleen in laying hens

open access: yesBrazilian Journal of Poultry Science, 2012
Recent studies have reported the use of IgY antibody in the prevention or treatment of diseases in animals. IgY can be obtained in large amounts from the yolk of chicken eggs through a low-cost process. This study evaluated the effect of different routes
SF Eto   +5 more
doaj   +1 more source

Genome-wide association studies for small intestine length in an F2 population of chickens

open access: yesItalian Journal of Animal Science, 2018
Small intestine length is an important physiological index that is effected by nutrient intake and thus plays roles in growth and egg-laying in chickens.
Shangmin Li   +8 more
doaj   +1 more source

Egg-laying [PDF]

open access: yesWormBook, 2005
C. elegans hermaphrodites are self-fertile, and their rate and temporal pattern of egg-laying are modulated by diverse environmental cues. Egg-laying behavior has served as an important phenotypic assay for the genetic dissection of neuronal signal transduction mechanisms. This chapter reviews our current understanding of the neuronal and neurochemical
openaire   +2 more sources

Melatonin Improves Laying Performance by Enhancing Intestinal Amino Acids Transport in Hens

open access: yesFrontiers in Endocrinology, 2018
The high concentration of melatonin (MEL) in the intestinal mucosa suggests that it has a special physiological function in intestine. In hens, previous studies have shown that MEL treatment promoted egg-laying performance.
Lijuan Liu   +9 more
doaj   +1 more source

Estimation of calcitonin and calcitonin gene-related peptide-α in bone calcification in quail during laying period [PDF]

open access: yesIraqi Journal of Veterinary Sciences
Maintaining the balance of calcium, phosphorus, and their regulating hormones is essential in laying hens to preserve the quality of the eggs and the framework. However, the physiological regulation of these systems is quite specific.
Hadeel M. Hameed, Soulaf J. Kakel
doaj   +1 more source

Effects of dietary iron on reproductive performance of Chinese Yellow broiler breeder hens during the egg-laying period

open access: yesPoultry Science, 2020
: The objective of this study was to investigate the effects of dietary iron (Fe) on reproductive performance of Chinese Yellow broiler breeder hens during the egg-laying period.
Zhongyong Gou   +8 more
doaj   +1 more source

The Effect of Hard Pecking Enrichment during Rear on Feather Cover, Feather Pecking Behaviour and Beak Length in Beak-Trimmed and Intact-Beak Laying Hen Pullets

open access: yesAnimals, 2022
Injurious pecking, commonly controlled by beak trimming (BT), is a widespread issue in laying hens associated with thwarted foraging. This controlled study compared the effect in intact and beak-trimmed pullets of providing pecking pans to eight ...
Paula Elizabeth Baker   +2 more
doaj   +1 more source

Effect of Feed Additive on Base of L-carnitine in Drinking Water on Internal and External Egg Quality

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The objective of present study was to investigate the effect of feed additive on base of L-carnitine (30%) on some parameters of egg quality. Totally 40 White Leghorn laying hens were divided in two groups: control group (n=20) received drinking water ...
Cyril Hrnčár   +6 more
doaj  

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