Effects Of Different Season Forage On Rumen Environment And Blood Physiological And Biochemical Indexes Of The Grazing Sheep In The Dongsuqi

The aim of this experiment is to research the influence of the dongsuqi of different seasons on physiological and biochemical indexes of blood and rumen environment of grazing sheep.In summer(2016.6),autumn(2016.8)and winter(2016.11),the mixed forage in 9 different areas have been chosen for testing.The sheep of 6 typical herding households in those areas have been chosen for the collection of rumen fluid and blood.The indexes related to nutrient physiology of the grazing sheep have been tested and also gone through the correlation analysis.The experiment consists of three smaller experiments.The conclusions are as follows.1.The nutrients in the forage have changed dynamically with the season.In winter,the content of CP,Ca and P remains at the lowest level,which means that the forage has the lowest nutrient value.The mineral content in the forage remains in the normal range.The sheep’s intake of Cu and Zn is below the normal level.In winter when the forage enters the withering period,the nutrient intake can not satisfy the nutrient needs of the sheep.2.The content of BCP,NH3-N and VFA in the rumen fluid of grazing sheep remain at the lowest level in winter.The content of BUN,ALP,TP and GLO,which are the indexes about the blood,remains at the lowest level in winter.The blood sugar has not changed obviously.In winter,the nutrient physiology of grazing sheep reaches the lowest level.3.According to the correlation gained from the first and second experiment,the protein intake is related to NH3-N and BCP in the rumen as well as TP,ALB,GLU and BUN in the blood.