@article{Islam_Habib_Ferdaus_Mollah_Ali_2021, title={Supplementation of Diet With Microbial And Thermo-Stable 6-Phytase With Recommended And Deficient CA and P Level on Broiler Performance}, volume={19}, url={https://www.banglajol.info/index.php/SJA/article/view/54791}, DOI={10.3329/sja.v19i1.54791}, abstractNote={<p>An experiment was carried out to investigate the performances with 1080 male Cobb-500 broiler chicks using different levels of a microbial phytase in plantbased diet. Six dietary treatments were formulated as follows; the first 3 diets were balanced with Ca and Av. P according to the recommendation of Cobb-500 served as basal diet without phytase enzyme (T1), basal diet with 100g phytase ton-1 feed (T2) and basal diet with 200g phytase ton-1 feed (T3), while the last 3 diets were deficient in Ca and Av. P and containing no phytase enzyme (T4), diet with 100g phytase/ton feed (T5) and diet with 200g phytase ton-1 feed (T6). All 6 treatments were replicated 6 times. Body weight, feed consumption and mortality of broilers were recorded weekly. The highest body weight was found in T3 with 200g phytase ton-1 feed with recommended Ca and Av. P level in the diet, followed by T6 with 200g phytase/ton feed with deficient in Ca and Av. P level in the diet (P<0.05). The lowest weight was found in T1 without phytase with recommended Ca and Av. P level in the diet. The feed consumption, feed conversion ratio and mortality of the birds during 35 days of experimental period did not differ significantly (P<0.05). The meat yield characteristics at 35 days of age were non-significant among different treatments (P>0.05). Significantly lower value of total ash (%), Ca (%) and total P (%) of tibia was found in control group (T1) and T4. The results of this experiment revealed that phytase supplementation at 200g ton-1 of feed improved broiler performances at either recommended or deficient level of Ca and Av. P.</p> <p><em>SAARC J. Agric., 19(1): 211-222 (2021)</em></p>}, number={1}, journal={SAARC Journal of Agriculture}, author={Islam, MT and Habib, M and Ferdaus, AJM and Mollah, MBR and Ali, MS}, year={2021}, month={Jul.}, pages={211–222} }