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Effects of commercial enzyme preparations on egg and eggshell quality in laying hens.
Br Poult Sci. 2006 Aug; 47(4):501-10.BP

Abstract

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+Show Affiliations

Animal Science, School of Rural Science and Agriculture, University of New England, Armidale, NSW, Australia. jrobert2@une.edu.auNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16905477

Citation

Roberts, J R., and M Choct. "Effects of Commercial Enzyme Preparations On Egg and Eggshell Quality in Laying Hens." British Poultry Science, vol. 47, no. 4, 2006, pp. 501-10.
Roberts JR, Choct M. Effects of commercial enzyme preparations on egg and eggshell quality in laying hens. Br Poult Sci. 2006;47(4):501-10.
Roberts, J. R., & Choct, M. (2006). Effects of commercial enzyme preparations on egg and eggshell quality in laying hens. British Poultry Science, 47(4), 501-10.
Roberts JR, Choct M. Effects of Commercial Enzyme Preparations On Egg and Eggshell Quality in Laying Hens. Br Poult Sci. 2006;47(4):501-10. PubMed PMID: 16905477.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of commercial enzyme preparations on egg and eggshell quality in laying hens. AU - Roberts,J R, AU - Choct,M, PY - 2006/8/15/pubmed PY - 2006/10/14/medline PY - 2006/8/15/entrez SP - 501 EP - 10 JF - British poultry science JO - Br. Poult. Sci. VL - 47 IS - 4 N2 - 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. SN - 0007-1668 UR - https://www.unboundmedicine.com/medline/citation/16905477/Effects_of_commercial_enzyme_preparations_on_egg_and_eggshell_quality_in_laying_hens_ L2 - http://www.tandfonline.com/doi/full/10.1080/00071660600834175 DB - PRIME DP - Unbound Medicine ER -