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Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES   OCTOBER-NOVEMBER 2007 , Volume 14 , Number 4; Page(s) 162 To 170.
 
Paper: 

EFFECT OF DIFFERENT LEVELS OF BACTERIAL PROBIOTIC ON BROILERS PERFORMANCE AND SOME OF BLOOD FACTORS

 
 
Author(s):  ZARE SHAHNEH A.R.*, ABD ELAHI M.R., KAMYAB A.A.R., NIKKHAH A.
 
* DEPT. OF ANIMAL SCIENCE UNIVERSITY OF TEHRAN, IRAN
 
Abstract: 

This experiment was conducted in a randomized complete block design and included 600 Ross broiler chicks (male and female) which were divided into four groups with five replicates. This experiment was conducted in two periods starter 0-21, and grower 22-42, days. All of the diets were  isocaloric and isonitrogenous. The birds were received 0, 800, 1000 and 1200 gr probiotic (bacillus subtilis and bacillus licheniformis)/ ton diets in the starter period, and 0, 320, 400 and 480 g probiotic/ton diets in the grower period, which were termed groups 1 to 4, respectively. Body weight gain at starter period was significantly affected by dietary treatments (P<0.05), but body weight gain at grower period was not affected by using probiotic supplement (P>0.05). At the end of trial, the group 4 had maximum weight gain. The feed intake and mortality were not affected by experimental diets (P>0.05). There was no significant difference between treatments for feed efficiency (P>0.05), but there was significant difference between mean of treatments that were derived from Duncan,s multiple range test (P<0.05).There were no significant difference between groups in dressing, breast meat and thigh percent, at the end of experiment (P>0.05). The first treatment had the highest abdominal fat (3.04 percent) and fourth treatment group  had the lowest abdominal fat (2.43 percent), but among them, there was no significant difference (P>0.05). There was no significant difference between treatments for plasma cholesterol (P>0.05), but significant difference between mean of treatments were derived from Duncan,s multiple range test (P<0.05).The blood hemoglobin content was not affected by experimental diets (P>0.05). The number of white blood cells were significantly affected by dietary treatments (P<0.05), the group4 had maximum number of white blood cells, and group1 had minimum number of white blood cells.

 
Keyword(s): BROILERS, PROBIOTIC, BACILLUS SUBTILIS, BACILLUS LICHENIFORMIS
 
References: 
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