Ảnh hưởng của việc bổ sung chế phẩm Lactozym đến sinh trưởng, năng suất và chất lượng thịt ở gà
This study aimed to evaluate the effects of Lactozym on growth performance, productivity, quality of chicken meat and feed conversion ratio. We carried out study from August, 2019 to February, 2020 at the households in Hoang An commune, Hiep Hoa district, Bac Giang province. 900 chickens were seperated into two groups (chickens in the experimental group were supplemented Lactozym in case of the control group not supplemented; 450 chicks per group). The results showed that, an increase in average body weight gain of the chickens from 4 to 16 week-age; the average body weight gains of the chickens in the experimetal group (supplemented Lactozym) and the control group were 1156.82 and 1059.22g/chick, respectively. The absolute growth and relative growth rate in chickens supplemented with probiotic showed different from 4-5 to 11-12 week- age significantly (P < 0.05). The feed conversion ratio of chickens in the experimental group reduced 2.94kg, where as 3.12kg in control group. The product still increased the carcass ratio, thing meat ratio, breast eat ratio and reduced the belly fat ratio. Chicken meats supplemented probiotic showed higher pH and bright light rate of meat, the dehyration rate of meat was lower, meat was softer as compare with control group. These results can be considered as a fundament for application of Lactozym to improve the productivity in poultry production.
