Document Detail


Effects of commercial enzyme preparations on egg and eggshell quality in laying hens.
MedLine Citation:
PMID:  16905477     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
1. Four different commercial enzyme products were added to standard commercial layer diets, based on barley, wheat or triticale. 2. Diets were fed to 4 different strains of commercial laying hen: ISA Brown, Hy-Line CB, Tegel SB2 and Tegel HiSex. 3. Diets were given for 5 weeks prior to measurements of egg and eggshell quality. 4. The inclusion of commercial enzyme products in the diets had no effect on egg weight. 5. Positive effects of the enzymes were: improved eggshell breaking strength, shell weight, percentage shell and shell thickness for the barley-based diet and increased eggshell breaking strength for two of the enzymes with the wheat-based diets. 6. Negative effects of the enzyme products were slightly lighter coloured eggshells and reduced albumen quality for the barley-based diet and for two enzymes with the wheat-based diet. 7. The addition of commercial enzyme preparations had no main effect on egg and eggshell quality for the triticale-based diet, except for effects on yolk colour. 8. Yolk colour was lower than control for enzyme 3 in all diets and for enzyme 4 with the barley- and wheat-based diets. 9. Further investigation is required to elucidate the specific enzyme components that influence egg quality.
Authors:
J R Roberts; M Choct
Related Documents :
25338347 - The influence of different fats on postprandial triglyceridemia in normal weight, overw...
18977567 - An exposure study with polybrominated diphenyl ethers (pbdes) in female european starli...
8921357 - Changes in pituitary somatotroph and lactotroph distribution in laying and incubating t...
3444977 - Role of glucosinolates in the causation of liver haemorrhages in laying hens fed water-...
16054367 - Guilty until proven innocent: the case of npc1 and cholesterol.
21669067 - Naturally colonized beef cattle populations fed combinations of yeast culture and an io...
Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  47     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-08-14     Completed Date:  2006-10-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  501-10     Citation Subset:  IM    
Affiliation:
Animal Science, School of Rural Science and Agriculture, University of New England, Armidale, NSW, Australia. jrobert2@une.edu.au
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animal Feed / analysis
Animal Nutritional Physiological Phenomena
Animals
Cereals
Chickens / genetics,  metabolism*
Diet / veterinary*
Dietary Supplements*
Egg Shell / drug effects*,  physiology*
Eggs / standards*
Enzymes / pharmacology*
Female
Hordeum
Oviposition / drug effects
Triticum
Chemical
Reg. No./Substance:
0/Enzymes

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Prediction of ingredient quality and the effect of a combination of xylanase, amylase, protease and ...
Next Document:  Effect of higher levels of dietary selenium on production performance and immune responses in growin...