Factors Affecting Egg Production Patterns in Some Commercial Layer Flocks

Faculty Veterinary Medicine Year: 2002
Type of Publication: Theses Pages: 215
Authors:
BibID 10313333
Keywords : eggs    
Abstract:
The study was carried out using two commercial layer flocks, theBovans Brown and Lohman Brown located on the farms of Sharkiaprovince.The study consisted of the evaluation and analysis of fresh eggproduction and egg quality as well as the effect of exposure to variousstorage periods and temperatures. The purpose was to provide data onwhich breed is more suitable for our local environments and which storageenvironment is more appropriate to keep high quality table egg.The. results indicated that:1- Bovans Brown excelled significantly Lohman Bron for fresh eggweight, percentage of HHEP; but the reverse was true for the percentageof HDEP (61.56 gm, 57.81 % and 61.39% versus 60.18 gm, 56.62% and61.91%, respectively).- Bovans Browns’ had supenor values for albumen height, albumenweight, Haugh units, yolk weight, yolk index, shell weightpercentage and shell thickness was compared to those recorded forBovans Brown (7.69 mm, 37.48 gm, 86.26, 16.75 gm, 0.41, 10.15%and 0.35 mm Vs. 6.99 mm, 37.08 gm, 81.26, 16.19 gm, 0.39, 9.66%and 0.33 mm; respectively). .- Lohman Brown had high values of percentage of albumen weight,egg index and weight loss and percentage compared to that recorded 
   
     
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