Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

1 st WorkshopXIII International Feed Technology Symposiumnutritional value requirements in nutrition of goats. If some household uses silage asa goat feed, it is very important to additionally include a certain quantity of hey.Silage usually has diminished nutritional value because of a certain loss of it whichappears during preparation and storage so it has to be combined with other nutrients.Usage of grass- leguminous silage in nutrition of goats which contains enoughprotein requires additional nutrients which provide energy, such as wheat. On theother hand, corn silage requires adding of a certain nutrient rich in protein (sunfloweror soy additives) or leguminous hey, primarily containing alfalfa. (8, 9, 13)Experiences are different with corn and grass prepared silage usage (13). Grass silagedoesn’t cause any significant trouble while corn silage can in some cases causecertain disturbance in digestive organs. Besides that, it can cause loss of appetite, lossof milk production and fattening of goats, especially in the last weeks of the gravidperiod. Reduction of intake occurs as a result of goats refusing to eat. Having that inmind, it is recommended to use it in nutrition in the first half of lactation period, andto combine it with 0, 4-0, 5 kg of hey per meal, like it’s done with other silage.Because of that it is recommended to use it carefully in the nutrition of goats. It isvery important not to use poorly prepared silage, moldy or defective silage or verysour silage in the nutrition. Silage should be gradually included into the nutrition, insmaller portions 2-3 times a day. Goats can be fed with silage and portion in a dailymeal should be about 2-4 kg while the gravid head should be given smaller portions,1-2 kg. Kessler (19) states that maximum corn silage intake should be 4, 5 kg perday. Well prepared grass silage can be fed to goats during the lactation period andduring the entire gravid period. (3)Table 3. Grass silage utilise in winter period for dairy goats (19)Feedsmiddling hay- aftergrassgrass silage good qualityBarleyConcentrate5. months ofpregnancy0,51,70,32. months oflactation,production of milk5 kgFresh supstance of feed, kg/day0,53,10,30,83. months oflactation,production ofmilk 3 kg0,53,40,5If beer trope silage is used in the nutrition of goats, Kessler (18) recommends a dailyportion of 0, 9 kg, attending to its quality and gradual inclusion into the meal. Whenit comes to sugar beet root and leaves silage, it is recommended to use daily portionsof 0, 5 kg when primary meal is hey. This silage contains small quantity of overallprotein and cellulose.Lower quality silage can cause a decrease of milk production by 5 to 15 %. Poorlyprepared silage can also cause a disease in goats called listeriosis.157