The experiment was conducted to study the effects of different dietary selenium levels on growth performance, antioxidant indices and meat quality of 2~3 months old growing meat rabbits. One hundred 2-month-old New Zealand rabbits with not significantly different initial body weight were randomly assigned to 5 groups with 20 replicates per group and fed basal diet supplemented with 0 (control group), 0.15, 0.30, 0.45 and 0.60 mg/kg selenium, respectively. The trial lasted for 7 d for adaptation, and 23 d for test. The results showed that different dietary selenium levels significantly affected average daily gain (ADG) (P=0.019 4) and the ADG in 0.15 and 0.30 mg/kg added groups were significantly higher than those in control group (P<0.05) with not significantly different initial body weight. The feed/gain (F/G) was significantly affected by different dietary selenium levels (P=0.040 1) and the F/G in 0.15 and 0.30 mg/kg added groups were lower than that in contorl group. Different dietary selenium levels had significant influence on glutathione peroxidase (GSH-Px) activity of liver, serum and muscle (P<0.05 or P<0.01), superoxide dismutase (SOD) activity of liver and serum (P<0.05) and catalase (CAT) activity of liver (P=0.043 4). The malonaldehyde (MDA) content of liver and muscle (P<0.05) and the total antioxidant capacity (T-AOC) (P=0.037 6) were significantly affected by different dietary selenium levels. Different dietary selenium levels had significant influence on muscle water loss ratio (P=0.032 5) and drip loss (P=0.004 2) and the muscle water loss ratio in 0.15 mg/kg added group was lower than that in control and 0.60 mg/kg added groups (P<0.05).The shear value of muscle was significantly affected by different dietary selenium levels (P=0.028 5) and the value in selenium supplemented groups were lower than that in control group. With the increase of dietary selenium levels, the selenium concentration of the muscle increased. In conclusion, the appropriate supplementation levels of selenium in diet of 2~3 months old growing meat rabbits was 0.15 mg/kg.[Chinese Journal of Animal Nutrition, 2010,22(1):82-87]
ZHANG Yanyan,LI Fuchang*
. Effects of Different Dietary Selenium Levels on Growth Performance, Antioxidant Indices and Meat Quality of Meat Rabbits from 2 to 3 Months of Age[J]. Chinese Journal of Animal Nutrition, 2010
, 22(01)
: 82
-87
.
DOI: 10.3969/j.issn.1006-267x.2010.01.013