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Wpływ chlorku sodu w paszy na wzrost amurów

Hu Yu, Li Shaoming, Fan Junde, Hu Yujing, Ren Jiamin, Zhang Yu, Tang Jianzhou

Przemysł Chemiczny

2023

T. 102, nr 12

1302--1307

Do paszy dla amurów dodano NaCl (7,5, 15, 22,5 i 30 g/kg) w celu zbadania wpływu na przyrost masy ryb. Dodatek NaCl nie poprawił wyników wzrostu ryb w porównaniu z grupą kontrolną bez dodatku NaCl.

NaCl was added (7.5, 15, 22.5 and 30 g/kg) to grass carp feed to study the effect on fish mass gain rate. The NaCl addn. did not improved the fish growth performance when compared with control group with no addn. of NaCl.

Effects of grass carp introduction on macrophyte communities in a shallow lake

Krupska J., Pełechaty M., Pukacz A., Ossowski P.

Oceanological and Hydrobiological Studies

2012

Vol. 41, No. 1

35-40

In 2002, 2005 and 2007 vegetation and physicochemical properties of pelagial water were investigated in a shallow mid-forest lake. In 2002, the highest phytocoenotic diversity was recorded; charophytes and vascular submerged macrophytes formed their own extensive communities. After stocking with grass carp (Ctenopharyngodon idella Val.) in 2002, reduction of water transparency, as well as changes in qualitative and quantitative composition of macrophyte communities were observed. Submerged vegetation declined during subsequent growing seasons. Charophyte meadows vanished first. The introduction of grass carp appeared to be a potential trigger for the rapid changes observed in the vegetation.