Under the dual influence of antibiotic restriction policies in animal husbandry, marine-derived Enterococcus durans YQ-6 has been considered a promising alternative feed additive. A total of 180 one-day-old male Leizhou black ducks were randomly allocated into five groups: a blank control, three YQ-6 dose groups (1 × 107, 1 × 108, 1 × 109 CFU/kg), and a Lactobacillus acidophilus control group, with six replicates per group. The trial lasted 42 days. The results showed that YQ-6 could significantly increase the body weight and average daily gain of Leizhou black ducks (P 9 CFU/kg, can effectively promote the growth, improve meat quality and enhance intestinal health of Leizhou black ducks.
Gou et al. (Mon,) studied this question.