Optimum stocking density

Nui Coc Reservoir is an important provider of animal proteins and employment opportunities. However it is noticed that the fish fauna biodiversity in Vietnamese reservoirs is deteriorating both in the number and production of economically signifi cant species.

8p vidanh27 08-12-2018 19 0   Download

Nevertheless, there remains a need for research and development of housing systems that consider bird well-being, particularly with reference to concerns about restricted movement and lack of outlet for natural behaviour. Further basic and applied research is required to provide factual data on space requirements per bird; stocking density; and size, configuration, and construction of cages and other confinement systems.

22p loginnhanh 22-04-2013 51 3   Download