Works (4)
Updated: July 5th, 2023 15:58
2013 journal article
Changes in commercial laying stock performance, 1958–2011: thirty-seven flocks of the North Carolina random sample and subsequent layer performance and management tests
World's Poultry Science Journal, 69(3), 489–514.
author keywords: laying hens; genetic selection; moulting programmes; egg production; egg quality; body weight; population
TL;DR:
This review of the first 37 North Carolina layer tests shows continuing improvements in egg production, reduction in body weight and feed consumption, increases in egg weight andFeed conversion, improvements in liveability, and an improvement in egg quality from the commercially available white and brown egg strains.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018
2007 journal article
Effects of genetic selection on behavioral profiles of single comb white Leghorn hens through two production cycles
POULTRY SCIENCE, 86(9), 1814–1820.
author keywords: chicken; laying hen; molt; behavior; fearfulness
MeSH headings : Animal Husbandry / methods; Animals; Behavior, Animal / physiology; Chickens / genetics; Chickens / physiology; Female; Molting / physiology; Selection, Genetic
TL;DR:
Four layer genetic stocks and a commercial laying stock were utilized to evaluate potential changes in behavioral profiles due to the effects of genetic selection through 2 production cycles, indicating that long-term genetic selection by commercial egg-type breeding firms to enhance production parameters has had no impact on laying strain behavior patterns.
(via Semantic Scholar)
open access via academic.oup.com (publisher PDF)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
2007 journal article
Modeling the growth and death kinetics of Salmonella in poultry litter as a function of pH and water activity
POULTRY SCIENCE, 86(1), 191–201.
author keywords: Salmonella; mathematical modeling; litter; pH; water activity
MeSH headings : Animals; Floors and Floorcoverings; Hydrogen-Ion Concentration; Models, Biological; Salmonella / growth & development; Salmonella / isolation & purification; Time Factors; Turkeys / microbiology; Water / analysis; Water / chemistry
TL;DR:
The use of a single equation to predict the growth and decline of Salmonella populations as a function of pH and A(w) has potential application for use in the development of effective pathogen control strategies at the farm level.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: Web Of Science
Added: August 6, 2018
2004 journal article
Effects of bird age, density, and molt on behavioral profiles of two commercial layer strains in cages
POULTRY SCIENCE, 83(1), 15–23.
author keywords: chicken; laying hen; molt; behavior; fearfulness
MeSH headings : Age Factors; Aging / physiology; Animal Husbandry / methods; Animal Welfare; Animals; Behavior, Animal; Chickens / physiology; Feathers / injuries; Female; Housing, Animal; Molting / physiology; Oviposition / physiology; Population Density; Random Allocation
TL;DR:
Behaviors were affected by strain, density, bird age, and molting; however, the patterns and number of aggressive acts did not increase to compromise the welfare status of the hens.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
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