Results 41 to 50 of about 26,916 (317)

Bacterial contamination of table eggs and the influence of housing systems [PDF]

, 2008
With the introduction of alternative housing systems for laying hens in the EU, recent research has focussed on the bacterial contamination of table eggs, e.g. eggshell and egg content contamination.
Herman, L., Heyndrickx, M., Messens, W., Reu, K., de, Rodenburg, T.B., Uyttendaele, M.   +5 more
core   +2 more sources

Combined Effect of Genotype, Housing System, and Calcium on Performance and Eggshell Quality of Laying Hens

Animals, 2020
The objective of this study was to evaluate hen performance and eggshell quality response to genotype, housing system, and feed calcium (Ca) level. For this purpose, an experiment was conducted on 360 laying hens of ISA Brown, Bovans Brown (commercial ...
Mohamed Ketta, Eva Tůmová, Michaela Englmaierová, Darina Chodová   +3 more
doaj   +1 more source

On the heritability of blue-green eggshell coloration [PDF]

, 2010
Avian blue-green eggshell coloration has been proposed as a female signal of genetic or phenotypic quality to males. However, little is known about the relative importance of additive genetic and environmental effects as sources of eggshell
Kim, S.Y., Lobato, Elisa, Martínez de la Puente, Josué, Merino, Santiago, Morales, Judith, Moreno Klemming, Juan, Tomás, Gustavo   +6 more
core   +1 more source

Response of three laying hen genotypes to two feed calcium levels

Czech Journal of Animal Science, 2019
The present study aimed to evaluate the effect of two dietary Ca levels (3.00% vs 3.50%) in three hen genotypes (ISA Brown, Bovans Brown and Moravia BSL) on their laying performance and quality of their eggs.
Mohamed Ketta, Eva Tumova, Darina Chodova   +2 more
doaj   +1 more source

Dietary supplementation with sodium bicarbonate or sodium sulfate affects eggshell quality by altering ultrastructure and components in laying hens

Animal, 2021
Dietary sodium (Na) levels were related to the content of the eggshell matrix. We therefore speculated that dietary Na supplementation as sodium bicarbonate (NaHCO3) or sodium sulfate (Na2SO4) may improve eggshell quality. Additionally, dietary NaHCO3 or
Y. Fu, H.J. Zhang, S.G. Wu, J.M. Zhou, G.H. Qi, J. Wang   +5 more
doaj   +1 more source

Higher levels of CO2 during late incubation alter the hatch time of chicken embryos [PDF]

, 2015
status ...
C. Bahr, C. E. B. Romanini, D. Berckmans, Decuypere E., H. Bergoug, I. M. McGonnell, Molenaar R., N. Eterradossi, N. Roulston, P. Garain, Q. Tong, Raff H., T.G.M. Demmers, V. Exadaktylos, Walsberg G.E.   +14 more
core   +1 more source

Errors in Measuring and Calculating Eggshell Quality

Poultry Science, 1994
Abstract Three experiments were conducted to examine potential errors in measuring or calculating eggshell quality. In Experiment 1, specific gravity of eggs was measured in increments of .001 and .0025, and the increments of .0025 were combined for increments of .005.
R.H. HARMS, A.G. ABDALLAH, D.R. SLOAN
openaire   +1 more source

Relationship between hatchling length and weight on later productive performance in broilers [PDF]

, 2008
Hatchling length and weight are used as tools to measure hatchling quality. However, the relationship between these parameters and later performance are not well known.
Brand, H., van den, Meijerhof, R., Molenaar, R., Reijrink, I.A.M.   +3 more
core   +2 more sources

Utilisation of chicken eggshell nanopowder on physicochemical quality, microstructure, and amino acid profile of beef patties

Czech Journal of Food Sciences, 2023
Chicken eggshells are a source of calcium and protein that can be added to restructured meat products, including patties. This study aimed to improve the chemical quality of beef patties with the addition of chicken eggshell nanopowder, including pH ...
Herly Evanuarini, Agus Susilo, Uun Yanuhar, Adelya Desi Kurniawati   +3 more
doaj   +1 more source

Effects of Eggshell Quality and Broiler Breeder Age on Hatchability

Poultry Science, 1994
The effects of eggshell quality and breeder age were assessed on egg weight loss during incubation, fertility, hatchability, and embryonic mortality. The trials involved hatching eggs from three commercial broiler breeder flocks of the same strain but of different ages. The eggs were divided according to specific gravity into two groups, thin-shelled (<
Leticia Vega Roque, M. Chaveiro Soares
openalex   +3 more sources