Use of perches and nestboxes by laying hens in relation to social status, based on examination of consistency of ranking orders and frequency of interaction [PDF]
, 2001 Four groups of 15-19 adult ISA Brown hens were studied in pens to assess the relationship between social status and use of perches and nestboxes.
Savory, C. J. +5 more
core +1 more source
Utilization of vermitechnology and laying hen litter in supporting responsible consumption and production goals [PDF]
E3S Web of ConferencesThis study was conducted to examine vermitechnology and laying hen litter in support of the Sustainable Development Goals (SDGs): clean water and sanitation, circular economy, reducing waste generation, agriculture, and ecosystem restoration. In addition,
Nasution Nabila N.A. +6 more
doaj +1 more source
IMPACT OF FEED RESTRICTED SYSTEM AND ZINC FORMS ON SOME PRODUCTIVE PERFORMANCE TRAITS, EGG QUALITY PARAMETERS AND ECONOMIC EFFICIENCY OF MANDARAH LAYING HENS. [PDF]
Journal of Productivity and Development, 2021 This study was conducted to determine the effect of feeding different level of restricted feed with different forms of zinc(Zn) on productive performance, egg quality traits and economic efficiency of Mandarah (Egyptian local developed strain) laying ...
Ahmed Bealish +4 more
doaj +1 more source
Threonine requirements of laying hens
Poultry Science, 1998 In order to determine the Thr requirement of laying hens, two experiments were conducted using laying performance and plasma Thr concentration as parameters. At 29 and 39 wk of age, 100 and 600 laying hens in Experiments 1 and 2, respectively, with average BW and high egg production rate, were randomized, housed in individual cages, and given free ...
T, Ishibashi +5 more
openaire +2 more sources
Oxytocin in the Neurohypophysis of the Laying Hen [PDF]
Nature, 1960 ALTHOUGH it has been well known that the administration of posterior lobe hormones induces premature oviposit ion in the hen, Gallus domesticus 1,2, as in other fowls3, it remains undetermined whether the hormone(s) plays an essential part in normal oviposition.
K, TANAKA, S, NAKAJO
openaire +2 more sources
Characterization of miR-200 family members as blood biomarkers for human and laying hen ovarian cancer [PDF]
, 2020 MicroRNA-200 (miR-200) family is highly expressed in ovarian cancer. We evaluated the levels of family members relative to the internal control miR-103a in ovarian cancer and control blood specimens collected from American and Hong Kong Chinese ...
Norwitz, Errol R +14 more
core +1 more source
Effect of housing system on the calcium requirement of laying hens and on eggshell quality
Czech Journal of Animal Science, 2008 The effects of housing systems on the calcium requirement for eggshell production, eggshell quality and on the breaking strength of the hen's tibia were evaluated.
M. Lichovníková, L. Zeman
doaj +1 more source
Veterinary Medicine International, 2021 Colibacillosis in Indonesia until now still appears frequently, so the case of colibacillosis laying hens cannot reach the peak of egg production; the egg production period is delayed and easily infected with other diseases.
Sunaryo Hadi Warsito +9 more
doaj +1 more source
Performance of commercial laying hen genotypes on free range and organic farms in Switzerland, France and The Netherlands [PDF]
, 2012 1. A total of 257 farmers with free ranging laying hens (organic and conventional) in Switzerland, France and The Netherlands with 273 flocks were interviewed to determine the relationships between the genotype of the hens, management conditions and ...
van Niekerk, T.G.C.M. +17 more
core +1 more source
Microbiome applications for laying hen performance and egg production
Poultry Science, 2022 : Management of laying hens has undergone considerable changes in the commercial egg industry. Shifting commercial production from cage-based systems to cage-free has impacted the housing environment and created issues not previously encountered. Sources
Steven C. Ricke +2 more
doaj +1 more source