Genome-wide analyses reveal intricate genetic mechanisms underlying egg production efficiency in chickens [PDF]
Journal of Animal Science and BiotechnologyBackground Compared to many other vertebrates, chickens have a high reproductive efficiency in terms of egg production. The classic traits for evaluating egg-laying performance include age at first egg, egg number, clutch size, laying rate, etc.
Lizhi Tan +11 more
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Increasing Productivity of Egg Production through Individual Selection on Tegal Ducks (Anas javanicus) [PDF]
Animal Production: Indonesian Journal of Animal Production, 2009 The purpose of this research was to study the effect of egg production selection characteristic on productivity of Tegal duck. Materials used were 112 of six month old Tegal ducks consisted of 16 males and 96 females.
Ismoyowati +3 more
doaj +1 more source
Efficiency of Sales of Edible Eggs by Weight and Categories. Pricing Methodology [PDF]
E3S Web of Conferences, 2021 The yields of eggs of various categories from modern highly productive crosses of chickens (SP-789, Lohmann LSL Classic, Lohmann Brown Lite) were studied.
Kavtarashvili Alexey
doaj +1 more source
Color Temperature of Led Light-Emitting Diodes Lighting Devices and Productivity of Laying Hens [PDF]
E3S Web of Conferences, 2021 The article is devoted to the study of the influence of different modes of LED lamps color temperature in high-speed lighting conditions 2C:5T:3C:2T:3C:9T on productivity and viability, quality of the cross "Shaver" hens’ eggs.
Gladin Dmitry, Kavtarashvili Alexey
doaj +1 more source
Light Ripples and their Effects per Person and per Bird [PDF]
E3S Web of Conferences, 2021 The article discusses the influence of light pulsation on the physiological state of humans and birds, some aspects of its occurrence, the main characteristics and the alleged role in the deterioration of chickens’ zootechnical indicators under the ...
Gladin Dmitry, Kavtarashvili Alexey
doaj +1 more source
Effect of smooth switching the light on/off under intermittent LED lighting on the productivity of laying hens [PDF]
BIO Web of Conferences, 2022 The influence of smooth switching the light on/off on the productivity and viability of laying hens of the SP-789 cross was studied. In the experiments, three identical groups of 120-day-old birds were formed. In the first preliminary experiment, poultry
Gladin Dmitry, Kavtarashvili Alexey
doaj +1 more source
Vitality and productivity of laying hens under different light flickering frequency of led lamps [PDF]
BIO Web of Conferences, 2022 The vast majority of modern LED lighting systems for poultry use pulse-width modulation to control illumination in the poultry house. This work studied the vitality and productivity of laying hens under different frequencies of light flickering of LED ...
Kavtarashvili Alexey, Gladin Dmitry
doaj +1 more source
The reasons for the deterioration of chicken eggshell quality at high temperatures: a review [PDF]
E3S Web of Conferences, 2021 In hot-climate regions high ambient temperature is one of the main problems of poultry farming. It is a reason for large financial losses caused by a significant decrease in the livability and productivity of poultry and the quality of products.
Kavtarashvili Alexey, Buyarov Viktor
doaj +1 more source
Journal of Applied Poultry Research, 2023 SUMMARY: Free-range poultry has become more popular due to consumer demands for improvements in animal welfare. The current study was conducted to determine the impact of paddock area stocking density on the egg and environmental microbiology of free ...
J.S. Garcia +4 more
doaj +1 more source
Mathematical Modeling of Egg Production Curve in Khazak Indigenous Hens [PDF]
Poultry Science Journal, 2023 The number of eggs produced in a given period (egg production rate) is an important trait in layers that change over time and can be presented as a curve.
Hadi Faraji-Arough +2 more
doaj +1 more source