public function getTkw()
    {
        if (!$this->tkw && $this->getSpecies()) {
            return $this->getSpecies()->getTkw();
        }

        return $this->tkw;
    }
public function getTkw()
    {
        if (!$this->tkw && $this->getSpecies()) {
            return $this->getSpecies()->getTkw();
        }

        return $this->tkw;
    }
public function getTkw ( ) { if ( ! $ this -> tkw && $ this -> getSpecies ( ) ) { return $ this -> getSpecies ( ) -> getTkw ( ) ; } return $ this -> tkw ; }
Get tkw.

@return float
Get tkw .