تأثير إضافة بعض المعززات الحيوية Probiotics في العليقة على أداء أسماك الكارب الشائع Cyprinus carpio L. في الأحواض الزجاجية : أ-معايير النمو و الاستفادة من الغذاء

الملخص EN

Study was planed to compare different types of probiotics in two level used in Cyprinus carpio L.

fish ratios for studying it's effect on growth and food utilization criteria.

A same ration was fed for 84 days to nine groups (15 fish/each) with initial weight 22.44 ± 2 gm/fish and the intact ration was fed to the 1st fish group as a control.

The biomin imbo probiotic was added 1and 2 gm/1kg ration for the 2nd and 3rd fish group.

0.5 and 1 gm of the poultry star®me per 1kg ration the 4th and 5th fish group.

The ration of the 6th and the 7th fish group included 6 gm and 8 gm of the Iraqi probiotics.

3 and 5 gm of the commericial dry yeast was added to the 8th and 9th fish group ration respectively.

All the probiotic supported ration fish groups gave special poultry star®me on level added 0.5 gm/1kgsignificanthigher (p<0.05) body weight gain, growth rate, relative growth rate, specific growth rate, feed conversion ratio, feed efficiency ratio, protein efficiency ratio and protein productive value than the control fish group.