This study indicated that
compared with the control the haemolymph nitrogen monoxide
content significantly increased in the treated groups supplemented
with 0.1%, 0.2% and 0.4% anthraquinone extract at 6 h after the
stress; in the treated group supplemented with 0.2% anthraquinone
extract 12 h after 35 C stress. These results indicated that
the supplement of 0.1e0.2% anthraquinone extract could offset
somewhat the decrease of haemolymph ALP, lysozyme and
nitrogen monoxide contents caused by 35 C high temperature
stress, and counteract the impact of the stress.