Results 121 to 130 of about 787,178 (288)

Control methods for Dermanyssus gallinae in systems for laying hens: results of an international seminar [PDF]

, 2009
This paper reports the results of a seminar on poultry red mite (PRM), Dermanyssus gallinae. Eighteen researchers from eight European countries discussed life cycle issues of the mite, effects of mites on hens and egg production, and monitoring and ...
A.-G. Gjevre, B. Bell, B. Thind, C. Chauve, D. Moore, EMOUS R.A. VAN, J. Chirico, J. Zoons, M. Mul, MAURER V., O. Kilpinen, O. Sparagano, STEENBERG T., T. Van Niekerk, V. Maurer, ZOONS J.   +15 more
core   +3 more sources

The Effect of Housing Systems on the Growth, Egg production, Overall Egg Weight and Egg Quality Traits of a New Turkish Laying Hen Hybrid, Akbay [PDF]

Brazilian Journal of Poultry Science
This study was conducted to determine the effects of housing systems (free-range and conventional cage) during the egg-laying phase on the growth, egg production, overall egg weight, and egg quality traits of a new Turkish laying hen hybrid, Akbay.
M Baylan, K Kursun, N Abdallah, LB Celik, F Yenilmez, H Kutay   +5 more
doaj   +1 more source

Robustness in laying hens

The aim of the project ‘The genetics of robustness in laying hens’ was to investigate nature and regulation of robustness in laying hens under sub-optimal conditions and the possibility to increase robustness by using animal breeding without loss of production.
openaire   +1 more source

Concentrates Made from Legume Seeds (Lupinus Angustifolius, Lupinus Luteus and Pisum Sativum) and Rapeseed Meal as Protein Sources in Laying Hen Diets

, 2015
The aim of the study was to determine the usefulness of two protein concentrates composed of rapeseed meal and new cultivars of narrow-leaved and yellow lupine, peas in laying hen diets and their influence on birds’ performance and egg characteristics ...
A. Rutkowski, S. Kaczmarek, M. Hejdysz, S. Nowaczewski, D. Jamróz   +4 more
semanticscholar   +1 more source

Ongoing increase in autochthonous Salmonella Enteritidis infections, the Netherlands, June 2023 to June 2025

Eurosurveillance
Salmonella Enteritidis (SE) cases in humans have increased in the Netherlands, from an annual average of 281 (2017–2019) to 427 in 2023, 401 in 2024 and 209 in 2025 (January–June).
Eelco Franz
doaj   +1 more source

Dietary Sodium for Laying Hens

Poultry Science, 1977
Dietary sodium requirements of laying hens in open type and evaporatively cooled housing were determined to be 0.126 and 0.145% of the diet, respectively. The lowest level of 0.04% sodium supported average rates of production of 49.1 and 60.3% in the two houses for the 28 weeks of the study.
openaire   +3 more sources

How to motivate laying hens to use the hen run? [PDF]

, 2004
In organic agriculture, hens are kept in free range systems. A free range is an enrichment for the hens and brings several advantages for them. Laying hens may show behavioural elements that are not possible in a poultry house.
Hauser, J., Hirt, Helen, Zeltner, Esther
core  

Low-fiber alfalfa (Medicago sativa L.) meal in the laying hen diet: effects on productive traits and egg quality.

Poultry Science, 2014
This study was designed to determine the effects on laying performance and egg quality resulting from partial substitution of soybean meal (SBM) with low-fiber alfalfa (LFA; Medicago sativa L.) meal in the diet of early-phase laying hens.
V. Laudadio, E. Ceci, N. M. B. Lastella, M. Introna, V. Tufarelli   +4 more
semanticscholar   +1 more source

Thermal Environment, Ammonia Concentrations, and Ammonia Emissions of Aviary Houses with White Laying Hens [PDF]

, 2013
Maintaining comfortable thermal environments and good indoor air quality is essential to ensuring optimal production performance, welfare, and health of animals.
Hayes, Morgan, Li, Hong, Shepherd, Timothy, Stinn, John, Xin, Hongwei, Xin, Hongwei, Zhao, Yang   +6 more
core   +2 more sources

Ammonia Emissions of Laying-Hen Manure as Affected by Accumulation Time

The Journal of Poultry Science, 2011
A study was conducted to investigate how ammonia (NH3) emission of laying hen manure is affected by manure accumulation time (MAT). Three trials were conducted.
Justin H. Chepete, Hongwei Xin, Hong Li
doaj   +1 more source