Harvesting WHEN TO HARVEST? It is essential to adopt the right stage of harvest, which will ensure the optimum quantity of nutrients in the plant along.

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Presentation transcript:

Harvesting WHEN TO HARVEST? It is essential to adopt the right stage of harvest, which will ensure the optimum quantity of nutrients in the plant along with the succulency and palatability. Hence, it is better to harvest at 50% flowering stage for the annual fodders. Adopt the right frequency of harvest as per the recommendation for perennial crops.

HOW TO PRESERVE? Silage Conservation of green fodders under anaerobic conditions in the green form is called ensiling and the conserved green fodder is called silage. anaerobic Silage is highly palatable, slightly laxative, easily digestible and loss of carotene during ensiling is very less. Organic wastes, weeds, coarse fodders and thick stemmed forages can be effectively conserved as silage. The surplus green fodder can be preserved as silage for feeding during lean seasons. The device or container used to preserve silage is called silo. Silos can be permanent structures like towers, trenches, or bunkers prepared using bricks, cement, or stainless steel, or they can be pits dug in the ground and plastered with cow dung and clay or cement mortar.

STEPS IN THE PREPARATION OF GOOD SILAGE Cereal crops should be cut at 50% flowering stage for silage making. Sorghum & maize are more suitable for silage making. Crops like Hybrid napier should be harvested days after previous cut. The moisture content in the harvested material should be at % The material thoroughly chaffed into small bits of 1-2 cm size. Additives are added to promote lactic acid fermentation and discourage the activity of other organisms. About 3 – 4 kg of urea can be dissolved in water and the solution sprinkled on one ton of chaffed materials. Or else, add either 30 kg of molasses, or 50 – 60 kg of broken grains of sorghum or maize or any cereal, or add 45 kg of citrus fruit pulp. Any one of the above can be added.fermentation The material is filled into the silos in uniform layers and compacted to eliminate the air. It should be airtight packing. The packing should reach 1 – 2 m above the ground level of the bunker or pit in a dome shape. To make the silo airtight for continued anaerobic conditions, it should be sealed using insulators like mud, plastic sheets, mud and dung mixture, etc. After few days the material gets compressed leaving open space on the top.anaerobic

WHEN IT IS READY FOR LIVSTOCK FEEDING? After a period of one and half to two months, the silage is ready for feeding livestock. During this period fermentation takes place. Due to the activity of enzymes and bacteria, organic acids like lactic acid, acetic acid, butyric acid, etc., and also ethyl alcohol is formed.fermentation The pH is brought down to 4.0. Lactic acid fermentation is important for good quality silage.pHfermentation Aerobic conditions or more proteinaceous material used for silage, lead to butyric acid fermentation which is not desirable.fermentation

QUALITIES OF GOOD SILAGE Good quality silage is golden yellow or greenish yellow in colour, bright and moist in appearance with characteristic pleasant aroma. While using the silage, silo is opened to remove sufficient quantity of silage and immediately made airtight. Once open, the silage should be removed and fed daily till it is finished.

Hay making The moisture content in the forage plants is reduced drastically to 15% or below for long period storage. Fine stemmed grasses and legumes make good hay. This stemmed and more leafy grasses like oats are good for hay making. However, crops like sorghum and maize are also converted into hay. Most grasses form pastures like Cenchrus ciliaris, Dicanthium annulatum, Cynodon dactylon when properly cut and dried make good hay. Cultivated fodders like hybrid napier, para grass, guinea grass, teosinte are not suitable for hay making. Legume hays are more useful because of higher protein content. The legume crops suitable for hay making are lab-lab, cowpea, French beans or guar, horse gram, sunnhemp, pillipesara and lucerne. Leaf shedding will be a great problem during drying and curing process in the legumes. It is because, the moisture is lost more easily from the leaves than from the stems. Leaves constitute nearly half the green materials and 75% of the protein. So, loss of leaf will reduce the feeding value very much. Cowpea, lab-lab and pillipesara are less liable to leaf shedding than other legumes. The perennial legume lucerne is also good for hay making.

HOW TO IMPROVE GRASSLANDS? A grassland is defined as a natural land surface which is covered mainly by members of the grass family of plants and are used for livestock grazing. Improperly managed grasslands not only fail in primary function of feeding livestock but also aggravate soil erosion and deplete the natural soil wealth. In order to improve the existing grasslands and to sustain the yield, it is advisable to adopt proper weed control methods, enclosure of grass lands, reseeding with the right choice of crops, proper soil and water conservation techniques, and also adopting grazing management methods such as rotational grazing and deferred grazing. In fixing the number of animals, the carrying capacity of the grassland should be taken into consideration. To have a well managed grasslands, it should be properly taken care & overgrazing should be strictly avoided. Allow the crop to establish for 2 years until then grazing should not be allowed. Once established, practice rotational grazing or deferred form of grazing so that the deterioration of good palatable species of pasture crops is avoided.