RESPONSE OF PERFORMANCE TO COMPENSATORY GROWTH  USAGE PROBIOTIC , ENZYMES MIXTURE , HIGH ENERGE AND PROTEIN IN THE RATION OF MODERN BROILERS STRAINS

	RESPONSE OF PERFORMANCE TO COMPENSATORY GROWTH USAGE PROBIOTIC , ENZYMES MIXTURE , HIGH ENERGE AND PROTEIN IN THE RATION OF MODERN BROILERS STRAINS
AL-TAQANI
Article 1, Volume 23, Issue 2, 2010, Pages 252-265
Abstract
This experiment included three phases age (0 and 2),(3 and 4) and (5and6) weeks . Using broilers of strain ARBOR –ACERS .In the first phase age all chicks divided in two main treatments, and fed ad libitum on starter ration .The first treatment fed diets without probiotic ,but the second treatment added to its diets probiotic (Biomine IMB 52) . In the second phase age (3and4)weeks ,decreasing growth period ,(feed restriction ) ,divided each main treatments into two secondary treatments ,one of them Ad libitum and the other fed restriction . In the third phase age (5and6) weeks ,compensatory growth period ,included ten treatments .the first five treatments (1-5) original birds group from first main treatment without probiotic ,and the second five treatments (6-10) original birds from second main treatment which added to diets probiotic .the results reverted to :- 1-highly body weight rate for treatments fed probiotic since day –old on other treatments. 2- Depression significant in total feed intake for feed restriction treatments compared with control treatment . 3- The best total feed efficiency rate to feed restriction treatments which give probiotic since day –old . 4- Lest mortality rate recorded for feed restriction treatments that fed probiotic since day –old .

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