Effects of Feeding High Tryptophan GM-Rice on Growth Performance of Chickens


	International Journal of Poultry Science
	Year: 2007 \| Volume: 6 \| Issue: 7 \| Page No.: 524-526 DOI: 10.3923/ijps.2007.524.526

Effects of Feeding High Tryptophan GM-Rice on Growth Performance of Chickens

Ryozo Takada and Makoto Otsuka

Abstract: Recently, high tryptophan genetically modified (GM)-rice has been newly developed and its tryptophan content was 50% higher than conventional rice. The goal of this experiment was to clarify the nutritive value of high tryptophan GM-rice on chicken growth performance. Experimental treatments were the following, 1) NB (control) group; brown rice (Nihonbare) based low protein diet in which all the deficient essential amino acids except tryptophan were added to meet the nutritional requirement, 2) NB+Trp group; control diet+crystalline tryptophan, 3) HW-1 (GM Trp) group; GM-brown rice (high tryptophan) based low protein diet in which all the deficient essential amino acids except tryptophan were added. Twenty one birds of Boris brown male chickens (7 days of age and 80±2 g of initial body weight) were used. They were assigned to three experimental groups, each of which contained 7 birds. The birds were individually housed in electrically heated battery cages maintained in temperature constant (24 degrees) room. They had free access to experimental diet and water during an experimental period of three weeks. Body weight gain in NB+Trp group and HW-1 group were significantly higher than that in control group. Similarly, higher feed intake in NB+Trp group and HW-1 group compared with control group were observed. Feed efficiency (gain/feed) in HW-1 group was significantly higher than in control group. These results show that the nutritional value of high tryptophan GM-Rice is similar to that of non-GM rice supplemented with crystalline tryptophan.

PDF Citation Report Citation

How to cite this article:

Ryozo Takada and Makoto Otsuka, 2007. Effects of Feeding High Tryptophan GM-Rice on Growth Performance of Chickens. International Journal of Poultry Science, 6: 524-526.

DOI: 10.3923/ijps.2007.524.526

URL: https://scialert.net/abstract/?doi=ijps.2007.524.526

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		AGRICOLA
		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		SCIMAGO

Follow @scialert

Science Alert