مجتبی یاری

ABSTRACT Introduction: Raisin waste (sugar) is a waste from raisin factories, which mainly contains raisin skin and tail, and can be studied as a new source for animal feed. Ruminant feeding systems based on wastes available in the area are a useful method due to the consumption of these wastes by rumen microbes. These wastes contain a large amount of structural carbohydrates that meet the nutrient needs to maintain growth and reproduction and milk production. . Materials: 12 growing Ghezel male lambs with an initial weight of 26 2 2 kg in a 3 3 3 Latin square design to investigate three levels of 0, 9 and 18% (dry matter) sugar substitution with barley in ration-based diets Wheat straw was used in three 21-day experimental periods consisting of 14 days for livestock adaptation to the diet and 7 days for sampling and data recording. Lambs were kept in double groups in a place with dimensions of 2 جایگاه 1 m. To prepare the diet, nutritional tables and feed analysis of NRC (2007) of small ruminants were used. Three diets were selected from wheat straw and concentrate for average weights of 25, 30 and 35 kg. The used straw was prepared in a completely crushed form, the concentrate was milled by Bitalk hammer mill with 2 ml pores and the raisin wastes were ground in order to prepare a completely uniform diet. Lambs were divided into three experimental groups receiving control diet, diet containing 9% and diet containing 18% of raisin waste. Results: Functional traits such as dry matter intake, daily weight gain of livestock, feed conversion ratio and nutrient digestibility were not affected by barley replacement with sugar (P> 0.05). The highest amount of blood triglyceride belonged to the 9% group of sugar and barley replacement and the lowest amount belonged to the control group and the blood triglyceride of 18% of lambs was moderate (P <0.05). The highest amount of whole blood protein belonged to the 9% group and the lowest to the control group. With increasing the