@article{Islam_Debi_Haque_Moury_2021, title={Effect of using Spirulina platensis in place of vitamin mineral premix in feed on the performance of broiler}, volume={50}, url={https://banglajol.info/index.php/BJAS/article/view/55570}, DOI={10.3329/bjas.v50i1.55570}, abstractNote={<p>Feed of commercial broiler fortified by the external sources of vitamin and minerals which is expensive and increase the cost of feed. Blue green algae (<em>Spirulinaplatensis</em>) would be an alternative to those synthetic micronutrients after production in laboratory scale was studied in broiler.<em>Spirulinaplatensis</em>was cultured in inorganic media contained macronutrients NaHCO<sub>3</sub>, K<sub>2</sub>HPO<sub>4</sub>, NaNO<sub>3</sub>, K<sub>2</sub>SO<sub>4</sub>, NaCl, MgSO<sub>4</sub>.7H<sub>2</sub>O, CaCl<sub>2</sub>, and FeSO<sub>4</sub>.2H<sub>2</sub>O and micronutrient solution containing H<sub>3</sub>BO<sub>4</sub>, MnCl<sub>2</sub>.4H<sub>2</sub>O, ZnSO<sub>4</sub>.7H<sub>2</sub>O, CuSO<sub>4</sub>.5H<sub>2</sub>O, MoO<sub>3</sub>, CoCl<sub>2</sub>.6H<sub>2</sub>O. Media was autoclaved and <em>Spirulina</em>was cultured for 12 hours lighting with continuous aeration for 15 days to use in poultry feed. Day old broiler chick (180) was reared offering starter mash diet for 7 days. Birds were divided into 6 groups having 30 birds in each (10 per cage). Birds were offered 1. Control diet, 2. 75% premix+25% <em>Spirulina</em>, 3. 50% premix+50% <em>Spirulina</em>, 4. 25% premix+75% <em>Spirulina</em>, 5. 0% premix+100% <em>Spirulina</em> and 6. 0% premix+0% <em>Spirulina</em> (negative control). <em>Spirulina</em>was calculated on DM basis added minerals in the media. After 21 days (28 day old) final body weight was 1039, 1070, 1044, 1065, 1117 and 893 g/bird in group 1, 2, 3, 4, 5 and 6 where higher (P<0.5) weight observed in <em>Spirulina</em>group (5). Feed intake was observed more or less similar in all groups (1483±24g). Feed conversion ratio was 1.72, 1.65, 1.69, 1.62, 1.61 and 1.99 in group 1, 2, 3, 4, 5 and 6 respectively (P<0.5) where higher in negative control group (6) and control group (1), but was lowest in 75% <em>Spirulina</em>group (4) and highest (100%) <em>Spirulina</em> group (5). Ash% is also highest in 100% <em>Spirulina</em> group 5 (55.07) than any other group. Considering growth performance of broiler, complete replacement of vitamin-mineral premix could be possible by cultured <em>Spirulina</em>along with media in broiler diet.</p> <p>Bang. J. Anim. Sci. 2021. 50 (1):64-72</p>}, number={1}, journal={Bangladesh Journal of Animal Science}, author={Islam, KMS and Debi, MR and Haque, R and Moury, SN}, year={2021}, month={Sep.}, pages={64–72} }