Effect of Green Tea and Biotite on Performance, Meat Quality and Organ Development in Ross Broiler

A study was conducted with green tea (GT) and biotite to evaluate their effect on broiler growth, meat quality, and the development of internal organs. A total of 210 Ross day old chicks (DOC) were distributed to 6 dietary feed additive groups having 5 treatments with 7 chicks in each group. The groups were control (basal), antibiotic (basal + 30 ppm oxytetracycline), GT (0.5 and 1.0% with basal) and biotite (0.5 and 1.0% with basal). The birds were reared in wire cages following a completely randomized design for a period of 5 weeks under recommended starter and finisher diets. The results can be summarized as below: 1. The final weight, weight gain, and feed intake of broiler were statistically lower in 1% green tea than the others (P<0.05). 2. Green tea and biotite addition as feed additives showed a potential in livability like the antibiotic fed broilers compared to control group. 3. The crude protein content of meat was significantly higher in biotite fed broiler than other groups (P<0.05) and 1% biotite reduced crude fat content in meat like the antibiotic. Addition of biotite in feed significantly increased crude ash in broiler meat compared to other groups. 4. The TBA value of broiler meat in 1.0% biotite was significantly lower on the 1st week after preservation (P<0.05). 5. The weight of small intestine was significantly smaller in the 0.5% green tea than other groups (P<0.05). In 1.0% biotite fed broiler had the shortest length of the small intestine (P<0.05) compared to antibiotic. 6. There was no adverse effect observed in addition of lower level of green tea M.S.K. Sarker, et al. 78 (0.05%) and upto 1% biotite as feed additives in respect of growth performance, meat quality and internal organ development In conclusion, addition of 0.5% green tea and upto 1.0% biotite may have the potential in replacing oxytetracycline for broiler production.