 ISSN 1392-0200 |
2002 m. Nr. 2 The influence of phytase on broiler productivity and nutrient digestibility
The effect of the RONOZYME P enzyme preparation on broiler chickens’ productivity, feed conversion ratio, tibia bone mineralisation, also on nutrient digestion was studied, using variously processed rape cake. The feeding experiment showed that a too significant phosphorus and calcium reduction increased the feed conversion and slowed the growth of chickens. However, the mentioned enzyme supplement improved feed nutrient digestibility. During the feed nutrient digestibility experiment, addition of non-shelled rape cake showed that the digestibilty of rude proteins, total phosphorus and calcium improved by 3.0%, 2.8% and 3.0% (p > 0.05) respectively, and using shelled rape cake with the mentioned enzyme supplement, in comparison to the control group, the digestibility of crude protein, total phosphorus and total calcium improved by 1.1%, 18.3% and 9.6% (p > 0.05), respectively. Phytase supplement in feed, together with smaller amounts of phosphorus in nonshelled rape cake, increased phosphorus levels in the tibia by 0.8% (p > 0.05) and with shelled rape cake by 1.1%. Keywords: phytase enzyme preparation, shelled and non-shelled rape cake, broiler chickens, productivity |
Numeriai:
2012 - T.19 Nr.1 2011 - T.18 Nr.1, Nr.2, Nr.3, Nr.4 2010 - T.17 Nr.1-2, Nr.3-4 2009 - T.16 Nr.1-2, Nr.3-4 2008 - T.15 Nr.1, Nr.2, Nr.3, Nr.4 2007 - T.14 Nr.1, Nr.2, Nr.3, Nr.4, Nr.Priedas 2006 Nr.1, Nr.1.Priedas, Nr.2, Nr.3, Nr.4 2005 Nr.1, Nr.2, Nr.3, Nr.4 2004 Nr.1, Nr.2, Nr.3, Nr.4 2003 Nr.1, Nr.2, Nr.3, Nr.4 2002 Nr.1, Nr.2, Nr.3, Nr.4 2001 Nr.1, Nr.2, Nr.3, Nr.4 |