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Method of Shing and Magur fish Culture

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Introduction  There is slight resemblance of body characteristic between shing and magur fish. Their body is long, ventral side cylindrical, dorsal side flattened and scales less, upper and lower side of head is flattened. Four pair�s antenna in head and one pair spines are present in both sides of head. But shing fish is smaller than magur fish in size and head is comparatively thin. Spines of both sides are toxic in shing fish and that�s why if stung by spine of shing fish, much pain is felt in affected area. The color of shing fish is brownish red in younger stage and grayish black in adult stage. On the other hand, the color of magur fish is dark brown in younger stage and grayish brown in adult stage. A special characteristic of shing and magur is that they have an extra respiratory system except gill and by which they can receive oxygen directly from air. So, they can survive long time in water with less oxygen and even in without water. That�s why shing and magur fish are ca...

Method of Ompok (pabda) and Gulsha Fish Culture

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Pabda and gulsha fishes are available in beel, haor, river, pond and lake. These fishes are very tasty. That�s why; demand and market price of the fishes are comparatively high. Pabda fish is 15-30 cm long, flattened body and back side gradually thinner than front side. Mouth is very wide and curved. Lower jaw is wider than upper jaw and two pair long barbs are present in the front side of mouth. Dorsal fin is small, anal fin is very long and tail is divided into two parts. Color of upper level (dorsal) is grayish silver whereas belly side (ventral) is white. Black spots are found in the back of the operculum nearer to the neck. A yellowish stripe may be found on the lining of backbone. Pabda fish breeds from May to August. Maximum breeding can be carried out at June-July. Gulsha fish is 15-23 cm long and body flattened from side. Dorsal side is curved, mouth is small, upper jaw is slightly enlarged. 4 pair barbs are present in mouth. Dorsal and operculum fin are with long spine. Coat ...

Methods of Milk Preservation

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Preservation of Milk: Milk preservation may be defined as the process of keeping milk safe as drinking food for a definite period of time free from spoilage. Milk has to be screened and chilled immediately after milking. Milk preservation system is not so easy. Because, the chemical structure of milk is easily changed. Generally, raw milk is sold everywhere in Bangladesh. If milk is kept for long time in raw condition, milk quality is deteriorated. In normal temperature (room temperature), various microorganisms in milk cause sour taste by producing lactic acid. Streptococci, a microorganism, mainly produce acid in milk. In normal temperature, microorganisms cause deterioration of milk by their multiplication.  Method of Milk Preservation A) Old method for milk preservation: Milk preservation by boiling: This method is most easy in household level. If boiling once, it will keep milk fresh up to 4 hours. So, if boiling milk for 20 minutes in every 4 hours, all kinds of disease caus...

What is the Importance of Co-operative Organization?

If considering the above discussion on agricultural co-operative, we can understand easily that agricultural co-operative is an integrated activity. This noble activity is just started by the decision of being united of the persons who are interested about this matter before they are to be active in agricultural production by co-operative. Second, very important step is adding land and money to co-operative and before this, it is required for main condition of co-operative i.e. rules which are finalized after discussion. In this case, helps can be taken from the office nearer to national cooperative department. Suggestion can be taken from Upazilla Agricultural, Livestock and Fisheries Officer. Co-operative organization is to be established following the constitution of agricultural co-operative executed by department of co-operative. Such kind of co-operative cannot be forwarded more by only making same opinion for doing agriculture altogether unless building up the co-operative organ...

Characteristics of Coastal Afforestation

Concept of Coastal Afforestation The natural forest conservation and afforestation in the coastal regions of Bangladesh has been reached at danger due to salinity and repeated natural calamities. The environmental balance of these coastal regions influences environmental balance of the entire country. For this reason, making coastal green prevaricate by cultivating salinity tolerant crops and planting trees tolerant to salinity, tidal surge and cyclone in the coastal areas is essential. If it is possible to execute this plan, besides escaping human, livestock and natural resources from natural calamities the coastal inhabitants can also be economically benefitted. Characteristics of Trees Used for Coastal Afforestation  The coastal forest areas are also called saline soil areas. Saline soil regions include the coastal areas of Bagerhat, Khulna, Satkhira, Patuakhali, Barguna, Bhola, Barisal and surroundings char regions. The main tree species of these regions are- coconut, hogplum, ...

What are the Rules for Tree Falling?

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Tree is our very valuable national resource. Though it is necessary to plant tree for economic need, for the same reason tree felling may be necessary. Generally tree felling is performed after the completion of plant�s life cycle. But there is an exception for those plants which are used for beautification and environmental conservation. Tree felling and wood collection are very important aspect. For this purpose, it is necessary to know various methodologies. After cutting plant, if it is not used as pillar, it should be sawn and should be assembled wood of necessary amount. Thereafter seasoning is necessary to increase the longevity of wood. Proper processing is also necessary to increase the longevity of bamboo. In this condition, by seasoning wood or bamboo, their quality and longevity can be increased. Time of Tree Felling or Time of Rotation The duration from seedling plantation to maximum growth of the tree when it attains maturity and becomes usable is called time tree felling...

Factors to be Consider in Establishing Family Dairy Farm

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Dairy cow farming is a profitable business. One should drink 90 liter of milk per year. But, people of this country can take in an average 10 liter of milk per year. So, there is a mark difference between milk production and requirement. The deficit can partially be met up by importing powder milk from abroad. Due to this deficit, people are being interested much to establish dairy farm from last two decades. Now, many people have been rearing cow as household farming in village, town and environs. More emphasis should be given on housing and feeding for rearing cow scientifically. Cow rearing increases employment opportunity, income of landless farmers in remote area, household nutrition and creates extra income. So, we can manage smooth earn and meet up our milk requirement by establishing family farm with 2-5 cows in our homestead area.   Planning should be taken for establishing a cow farm with improved breeds. Small types of farm with 2-5 cows can be set up in household level....