Results 71 to 80 of about 149,961 (158)
Effect of Perch Height and Position on the Usage in Enriched Colony Housing Systems for Laying Hens [PDF]
, 2016 In order to determine the utility of different perches in enriched colony housing systems for laying hens, the use of perches and an effect of the type and location in the system was examined in this behavioral study.
Rauch, Elke +4 more
core +1 more source
Jurnal Agripet, 2011 Increasing of antibody titre against avian influenza in serum of vaccinated laying hens with commercial vaccine ABSTRACT. The advantages of vaccination are that it reduces the risk of infection, and concurrently reduces morbidity, mortality and shedding
Ummu Balqis +4 more
doaj +1 more source
Siliao yanjiu, 2022 The experiment was to investigate the effect of Astragalus polysaccharide (APS) on production performance, egg quality and intestinal microflora structure of Hyline brown laying hens.
ZHANG Yao +3 more
doaj
Visual discrimination and object/picture recognition in hens [PDF]
, 2011 Eight experiments were conducted to examine different aspects of hen’s visual behaviour, and to assess whether hens responded to photographs in the same way they do to the real objects that were depicted in the photographs. In Experiment 1, six hens were
Railton, Renee Caron Richards
core
Siliao yanjiu, 2022 The experiment was conducted to investigate the effect of different levels of Erzhi pills on production performance, intestinal morphology and inflammatory factors of laying hens in late laying period.
DENG Cong-cong +7 more
doaj
Keel bone fractures affect egg laying performance but not egg quality in laying hens housed in a commercial aviary system [PDF]
, 2019 The aim of this study was to investigate the effect of keel bone fracture (KBF) severity and healing activity on individual productivity of laying hens. Focal hens (75 Lohmann Selected Leghorn (LSL), 75 Lohmann Brown (LB)) were housed alongside non-focal
Baur, Sarah Dorothea +7 more
core +1 more source
Research progress of vitamin E application in laying hens diet
Siliao yanjiu, 2023 At present, the large-scale development of laying hens breeding is being carried out in a positive and intensive manner. However, the large-scale breeding will lead to the aggravation of stress and frequent disease occurrence of laying hens.
HU Mei +3 more
doaj
, 1956 Photograph of Howard Rutledge and Clyde Brown reviewing and examining a flock of laying hens. The photograph does not indicate the left to right order of Howard Rutledge and Clyde Brown.
McConnell, John
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Effect of nutrient dilution and Nonstarch Polysaccharide concentration in rearing and laying diets on eating behavior and feather damage of rearing and laying hens [PDF]
, 2008 Verstrekking van verdunde opfokvoeders verhoogde de voeropname van de kuikens vanaf de eerste levensweek. Het lijkt erop dat de kuikens het pikgedrag meer op het voer richten als het verdunningsniveau van het opfokvoer toeneemt. Dit kan leiden tot minder
Peet-Schwering, C.M.C., van der +4 more
core
Siliao yanjiu, 2023 The purpose of the experiment was to investigate the effect of GSE on the production performance, egg quality and serum biochemical indexes of laying hens in the late peak egg laying period. A total of five hundred and forty 53-week-old Jingfen No.
ZHANG Wen-hui +7 more
doaj