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

1 st WorkshopXIII International Feed Technology Symposiumand if it’s of good quality, it can satisfy the requirements of goats completely. Thatway the adding of concentrated feed is lowered which diminishes the cost of nutritionof goats. Green feed should be the basic nutrient in nutrition of goats for a period of180 days in a year, at least. However, the yield of green mass from our natural andplanted grassland is dangerously low. For green mass production in plantedgrasslands, various compounds of spear grass and leguminous plants should be used.The most suitable plants for grass compounds are orchard grass, timothy-grass, tallfescue, meadow fescue, ryegrass, hairy brome, smooth meadow-grass, pigweed andleguminous plants such as alfalfa, red clover, birdsfoot trefoil, white clover etc.Grass has many advantages compared to roughage and concentrated feed because it’sa very good source of widely available nutriments. It contains a large percent ofprotein with high biological value, vitamin C and E, carotene, carbohydrates, macroand micro elements, growth factor etc. These nutriments are directly available toanimals unlike with preserved roughage which is transformed by various methods oftreatment and loses nutriments in the process. Compared to mowing, pastureamplifies the productivity of grasslands by more than 30% by gaining a richer yieldfrom the start (3).Table 1. Goat performance on ryegrass pastures (1)Stocking rate (n/xa 1 ) 8,0 10,4 13,6 16,4Total weight/xa (kg.) 430 558 730 881ADG (kg.) 0,31 0,20 0,22 0,18Total gain/xa (kg.) 370 310 446 4401Number of head on 0,4 xaThere are different grass types, leguminous plants of different quality, weed, harmfuland poisonous plants on our grasslands. The botanical structure of the naturalgrasslands is less appropriate compared to planted grasslands. Planted grasslands areusually based on only one type of plant (grass or leguminous plant) or a compound ofgrass and leguminous plants. Grass is rarely harbored as an individual type of plant ingrasslands. It is usually harbored as a compound of types of grass and perennialleguminous plants. On the other hand, leguminous plants are primarily harbored asindividual crops and some of them are harbored in grass- leguminous compounds (5).When planting grassland, compounds of perennial leguminous plants and types ofgrass should be given advantage because they provide more dry matter per surfaceunit, as well as more protein and minerals. Compounds of leguminous plants andtypes of grass have less variation in quantity of the yield compared to individualcrops, and they dry faster when mowed with less mechanical loss during themanipulation.155