Results 31 to 40 of about 316 (195)

Economic Feasibility in Commercial Egg Production in a Conventional and Cage-Free Systems with Different Stocking Densities [PDF]

Brazilian Journal of Poultry Science, 2022
Adapting existing laying facilities to meet animal welfare certifications is not a simple task. It causes higher expenses to producers, who are often hesitant to accept the need for changes.
LSN Oliveira, RG Garcia, MFC Burbarelli, FM Dutra, E Binotto, RM Noriller, DCK Basaia, MV Machado, CM Komiyama, FR Caldara   +9 more
doaj   +1 more source

Influence of forage substrates on environmental and egg microbiology in cage-free aviary housing

Journal of Applied Poultry Research, 2022
SUMMARY: Within aviary systems, open litter areas are provided to allow hens to express a more robust behavioral repertoire. However, data is limited on the influence forage substrates have on environmental and egg microbiology. The objective of this study was to examine the impact of forage substrates on environmental and egg microbiology in aviary ...
J.S. Garcia, D.R. Jones, R.K. Gast, C.I. Robison, P. Regmi, D.M. Karcher   +5 more
openaire   +2 more sources

Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research

Animals, 2023
Many countries have gradually shifted to animal welfare-friendly housing systems for egg layers. However, there is still no consensus among researchers on whether the housing system affects egg quality traits. Therefore, this study aimed to determine the
Nonoka Kawamura, Masahiro Takaya, Hideaki Hayashi, Tatsuhiko Goto   +3 more
doaj   +1 more source

Identification of reliable reference genes for expression studies in the magnum of laying hens housed in cage and cage‐free systems [PDF]

Veterinary Medicine and Science, 2021
Abstract Stress factors during poultry production can evoke changes in gene transcription and protein synthesis in the hen oviduct and could affect the internal and external egg quality. Studies of relative gene expression require the identification of the most stable reference genes for the quantitative ...
Roy Rodríguez‐Hernández, Edgar O. Oviedo‐Rondón, Iang S. Rondón‐Barragán   +2 more
openaire   +3 more sources

EFFICIENCY OF TABLE EGG PRODUCTION IN DIFFERENT HOUSING SYSTEMS AND FARM SIZES: A CASE STUDY BASED ON THREE HUNGARIAN FARMS [PDF]

Annals of the Polish Association of Agricultural and Agribusiness Economists, 2019
In the European Union, alternative housing systems (aviary, barn, free-range, organic) are increasingly used in laying hen populations (49.6%). Hungary is one of the member states where modified cage housing technology is prevalent, but this may change ...
Adél Dorottya Erdős, Szilvia Molnar, László Szőllősi   +2 more
doaj   +1 more source

Comparison of intestinal permeability, morphology, and ileal microbial communities of commercial hens housed in conventional cages and cage-free housing systems

Poultry Science, 2021
The gastrointestinal health of poultry can be impacted by a variety of factors including their environment. As egg production moves from conventional cage housing (CC) toward cage-free housing (CF), it is important to understand this impact on intestinal health.
Wiersema, Maddison, Koester, Lucas, Schmitz-Esser, Stephan, Koltes, Dawn   +3 more
openaire   +4 more sources

Egg production in nests and nesting behaviour: genetic correlations with egg quality and BW for laying hens on the floor

Animal, 2023
In laying hen production, cage-free housing is growing rapidly to provide living conditions that meet hens’ needs. Unlike cages, this housing requires nests for automatic collection of eggs, as eggs laid outside nests must be collected by hand. Selecting
L. Bécot, N. Bédère, A. Ferry, T. Burlot, P. Le Roy   +4 more
doaj   +1 more source

Effect of housing arrangement on fecal-oral transmission of avian hepatitis E virus in chicken flocks

BMC Veterinary Research, 2017
Background Avian hepatitis E virus (HEV) infection is common in chicken flocks in China, as currently no measures exist to prevent the spread of the disease.
Baoyuan Liu, Yani Sun, Yiyang Chen, Taofeng Du, Yuchen Nan, Xinjie Wang, Huixia Li, Baicheng Huang, Gaiping Zhang, En-Min Zhou, Qin Zhao   +10 more
doaj   +1 more source

Seasonal variations in egg quality traits in Belgrade supermarkets [PDF]

Biotechnology in Animal Husbandry
The aim of this study was to determine the quality of eggs available in Belgrade supermarkets during different seasons (winter, spring, summer), for various housing systems (cage, floor, and free-range), and to assess the representation of eggs from cage
Tolimir Nataša, Maslovarić Marijana, Urbancl Stefana, Nedeljković-Trailović Jelena, Pezo Lato, Lukić Miloš, Čanak Stevan, Škrbić Zdenka   +7 more
doaj   +1 more source

Thermal Response of Three Strains of Hens Housed in a Cage-Free Aviary at the Amazon Rainforest

Brazilian Journal of Poultry Science, 2021
ABSTRACT This study aimed to evaluate the thermal response of three strains of hens housed in a cage-free system at the Amazon rainforest in order to evaluate how feather coverage influences thermal exchange with the environment. The experimental method was completely randomized and treatments comprised three strains of hens (Rhode Island Red (red ...
JPF Rufino, LG Martorano, FGG Cruz, RJM Brasil, RD Melo, JC Feijó, LD Melo   +6 more
openaire   +4 more sources