The results showed that with increasing rearing density, the specific growth rate (SGR) and daily weight gain (DWG) of juvenile A.
结果表明，养殖密度对史氏鲟的生长、摄食率和消化率具有显著影响。
The simple filter apparatus couldeffectivelly purfty water quality, and raise rearing density and survival rate of the parentshrimp in the overwintering pond.
简易过滤装置可有效地净化亲虾池水质，提高亲虾养殖密度与成活率。
As the density of larvae was reduced, the volume of water in the rearing chamber was decreased by lifting it up, keeping the water line above the bottom of the rearing chamber.
当幼虫的密度是不断减少，在繁育间内的水通过提起圆筒而减少，保持水线在繁育间底部上。
As the density of larvae was reduced, the volume of water in the rearing chamber was decreased by lifting it up, keeping the water line above the bottom of the rearing chamber.
当幼虫的密度是不断减少，在繁育间内的水通过提起圆筒而减少，保持水线在繁育间底部上。
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