استفاده از سطوح مختلف سرشاخه نيشكر سيلو شده در جيره غذايي گاوهاي شيرده

The use of different levels of sugarcane tops silage of in feeding of dairy cattle.

In this experiment sugarcane tops first treated with urea(0.5%) and molasses (3%) and then ensiled. The forage portion of the deit was replaced by different amounts of sugarcane silage (25,50 and 75%)in dairy cattle deit and the results compared with control group. To this ascertain a total number of 20 heads dairy cattle were used with a complete randomized design with 4 treatments on 5 replecation. In initial and end of experiment the animals were weighed and daily milk production were recorded. The animals ration contents of forage and concentrate were obtained on the basis of weight and milk production and had been given to the animals daily. There is no significant differences between treatment for milk production (p<0.05). According to these results the average milk production were 11.39,11.21,11.55 and 11.13 liter respectively. There is no significant difference between initial and last weight of animals. Feed conversion efficiency on the basis of dry matter of milk were 1.06,1.02,1.01 and 1.07.The protein conversion efficiency per Kg of milk were 0.192 ,0.194,0.235 and 0.249 respectively and the TDN conversion efficiency for per Kg of milk were 0.87,1.43,1.59 and 1.68 respectively.there was also no significant differences for these treatment (p<0.05). The chemical analysis of milk composition of different treatments there are not significant differences between milk fat, pH, dry matter and protein. At the end we can express that sugarcane top silage which are enriched by urea and molassescane be used in dairy catties nutrition and replaces up to 75% instead of alfalfa has not any negative productivity effects and indicated that there were not any significant decreasing in the products.