TY - JOUR JF - JSTNAR JO - jwss VL - 5 IS - 4 PY - 2002 Y1 - 2002/1/01 TI - Effects of Different Levels of Lysine and Protein on the Performance of Hy-Line Layers TT - اثر سطوح مختلف لیزین و پروتئین جیره بر عملکرد مرغان تخمگذار N2 - An experiment was carried out to determine the effects of different levels of lysine and protein on the performance of 240 Hy-Line W36 layers. Ten experimental diets were tested in a 2×5 factorial arrangement with a completely randomized design. Two basal diets (13 and 14% protein) were tested at different levels (10 and 20% lower than NRC, NRC and 10 and 20% above NRC recommendations). Dietary lysine levels were 0.56, 0.62, 0.69, 0.76 and 0.83%. During the three months of experimental period, egg production, egg weight, egg output, feed intake and conversion and lysine and protein intake were determined. The results indicated that 0.76% lysine and more (10 and 20% above NRC recommendation) with 13% dietary protein led to significantly (P SP - 151 EP - 163 AU - M. Bouyeh, AU - J. Pourreza, AU - A. H. Samie, AD - KW - Lysine KW - Protein KW - Laying hens. UR - http://jstnar.iut.ac.ir/article-1-90-en.html ER -