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English :
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Effect of lactic acid bacteria and yeast on broiler performance and some blood constituents
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Arabic :
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اثر استخدام بكتريا حمض الاكتيك و الخميرة الجافة على الاداء الانتاجى لكتاكيت اللحم و بعض مقاييس الدم
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| Abstract |
This study was carried out to assessment the effect of some natural growth enhancers such as lactic acid bacteria (Micro-Bac, MB) and dried yeast (DY) on the performance, some blood parameters, nutrients digestibility and microorganisms count in the intestinal contents of broiler chickens.
. A total of 240 unsexed Hubbard broiler chicks were randomly distributed into 4 experimental groups. Birds were fed both the starter diet (for the first 3 weeks of age) and the finisher diet (for the second 3 weeks of age). The control group was fed the basal diet while the other 3 experimental groups were fed the basal diet supplemented with 500g/ton ofMBlkg, 1.5g of DYlkg or both of them.
Feeding of MB and DY treatments resulted in a significant increase in both body weight and weight gain and birds fed MB+DYsupplemented diet showed the highest increase in body weight and weight gain. Birds fed MB or MB + DY- diets significantly consumed lower feed while the DY-fed group significantly consumed higher feed.
Feed conversion ratio was significantly improved when chicks fed MB + DY diet (1.86) followed by those fed MB diets (1.91) then DY diets (2.02) alone. Nutrients digestibility had the same trend like feed conversion ratio but the differences between the experimental groups were only significant in crude protein, crude fiber and nitrogen free extract.
Birds fed DY and DY+MB diets showed a significant increase in total protein, albumin and globulin. Feeding of both MB and MB+DY diets resulted in a decrease in serum cholesterol level. Chicks fed-DY diet had lower bacterial and fungal counts than that of MB-fed birds while MB+DY -fed group had the lowest Salmonella count and this could be the reason of the lowest mortality rate of this group.
These results suggested that feeding of MB and DY alone or in combination can positively improve the productive performance of broiler chickens.
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| Publication year |
2005
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| Availability location |
معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| serial title |
Egyptian Journal of Applied Science
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| ISSN |
1110-1571
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Blood composition.
Broiler chickens.
Digestibility.
Lactic acid bacteria.
Performance testing.
Yeasts.
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| Proposed Agrovoc |
microorganisms count;
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| Publication Type |
Journal
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