Effects of dietary supplementation of keratinase on growth performance, nitrogen retention and intestinal morphology of broiler chickens fed diets with soybean and cottonseed meals

Animal Feed Science and Technology

Volumn 140, Issue 3-4, 2008, Pages 376-384

  Wang, Haiying ^a   Guo, Yuming ^a   Shih, Jason C H ^b  

^a CHINA AGRICULTURAL UNIVERSITY   (China)

^b NORTH CAROLINA STATE UNIVERSITY   (United States)

Author keywords

Broiler performance; Intestinal morphology; Keratinase; Nitrogen retention

Indexed keywords

GALLUS GALLUS; GLYCINE MAX; MICROPUS;

EID: 37649010371     PISSN: 03778401     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.anifeedsci.2007.04.003     Document Type: Article

References (20)

1. AOAC. Official Methods of Analysis. 16th ed. (1999), Association of Official Analytical Chemists, Washington, DC, USA
2. AOCS. Free and Total Gossypol Methods, Official and Tentative Methods of the AOCS (1997), AOCS, Champaign, IL, USA
3. Augspurger N.R., and Baker D.H. High dietary phytase levels maximize phytate-phosphorus utilization but do not effect protein utilization in chickens fed phosphorus- or amino acid-deficient diets. J. Anim. Sci. 82 (2004) 1100-1107
4. Bedford M.R., and Classen H. Reduction of intestinal viscosity through manipulation of dietary rye and pentosanase concentration is effected through changes in the carbohydrate composition of the intestinal aqueous phase and results in improved growth rate and feed conversion efficiency of broiler chicks. J. Nutr. 122 (1992) 560-569
5. Campbell G.L., and Bedford M.R. Enzyme applications for monogastric feeds, a review. Can. J. Anim. Sci. 72 (1992) 449-466
6. Gracia M.I., Araníbar M.J., Lázaro R., Medel P., and Mateos G.G. α-Amylase supplementation of broiler diets based on corn. Poult. Sci. 82 (2003) 436-442
7. Lin X., Casale E.S., Lee C.G., and Shih J.C.H. Purification and characterization of a keratinase from a feather-degrading Bacillus licheniformis. Appl. Environ. Microbiol. 58 (1992) 3271-3275
8. Lin X., Wong S.L., Miller E.S., and Shih J.C.H. Expression of the Bacillus licheniformis PWD-1 keratinase gene in B. subtilis. J. Ind. Microbiol. Biotech. 19 (1997) 134-138
9. Odetallah N.H., Wang J.J., Garlich J.D., and Shih J.C.H. Keratinase in starter diets improves growth of broiler chicks. Poult. Sci. 82 (2003) 664-670
10. Odetallah N.H., Wang J.J., Garlich J.D., and Shih J.C.H. Versazyme supplementation of broiler diets improves market growth performance. Poult. Sci. 84 (2005) 858-864
11. Ritz C.W., Hulet R.M., Self B.B., and Denbow D.M. Growth and intestinal morphology of male turkeys as influenced by dietary supplementation of amylase and xylanase. Poult. Sci. 74 (1995) 1329-1334
12. Rutherfurd S.M., Chung T.K., Morel P.C.H., and Moughan P.J. Effect of microbial phytase on ileal digestibility of phytate phosphorus, total phosphorus, and amino acid in a low-phosphorus diets for broilers. Poult. Sci. 83 (2004) 61-68
13. Shih J.C.H., and Wang J.J. Keratinase technology: from feather degradation and feed additive to prion destruction. CAB Rev.: Perspect. Agr. Vet. Sci. Nutri. Natur. Resour. 1 (2006) 1-6
14. SPSS, 1995. SPSS Version 10.0 for Windows. SPSS Inc., USA.
15. Wang J.J., Garlich J.D., and Shih J.C.H. Baneficial effects of Versazyme™, a keratinase feed additive, on body weight, feed conversion, and breast yield of broiler chickens. J. Appl. Poult. Res. 15 (2006) 544-550
16. Wang J.J., and Shih J.C.H. Fermentation production of keratinase from Bacillus licheniformis PWD-1 and recombinant B. subtilis FDB-29. J. Ind. Microbiol. Biotech. 22 (1999) 608-616
17. Williams C.M., Richter C.S., MacKenzie, and Shih J.C.H. Isolation, identification and characterization of a feather-degrading bacterium. Appl. Environ. Microbiol. 56 (1990) 1509-1515
18. Wu Y.B., Ravindran V., Thomas D.G., Birtles M.J., and Hendriks W.H. Influence of method of whole wheat inclusion and xylanase supplementation on the performance, apparent metabolisable energy, digestive tract measurements and gut morphology of broilers. Br. Poult. Sci. 45 (2004) 385-394
19. Xiong Y.Q., Bartle S.J., and Preston R.L. Improved enzymatic method to measure procession effects and starch availability in sorghum grain. J. Anim. Sci. 68 (1990) 3861-3870
20. Xu Z.R., Hu C.H., Xia M.S., Zhan X.A., and Wang M.Q. Effects of dietary fructooligosaccharide of digestive enzyme activities, intestinal microflora and morphology of male broilers. Poult. Sci. 82 (2003) 1030-1036