problem 1)a) describe in detail the significance of dissolved oxygen in aquaculture ponds. describe the methods of maintaining desired level of oxygen and the precautions to avoid oxygen crash.

b) prepare down the main nutrients essential in the aquaculture pond? describe the methods for nutrient enrichment.

problem 2)a) prepare the essay on feeding techniques and feed rationing procedures for a shrimp farm.

b) describe the ideal composition of formulated feeds and add a note on the main ingredients of shrimp feed.

problem 3)a) prepare down the general precautions to be adopted for maintaining a disease free culture farm. prepare a short account on the infectious disease of shrimps.

b) prepare detailed notes on

(i) Nutritional probiotics

(ii) Prophylactic measures

problem 4)a) Describe the role of R & D institutions in the promotion of coastal aquaculture.

b) Describe the significance of the following

(i) NABARD

(ii) Insurance coverage for aquaculture.

problem 5)a) Give an overview of government policies on Indian coastal zone management, with special reference to coastal aquaculture.