Study on quality of annual forage silage in the area around Qinghai Lake
The experiment aimed to analyze the differences in the quality of silage feed from annual pasture grasses in the area around Qinghai Lake,to define the nutritional range of different silage feeds,and to select silage feeds suitable for promotion in the area around Qinghai Lake.In this study,four annual forage treatments in the area around Qinghai Lake were used to harvest silage at the heading stage of oats,each treatment was repeated with five replicates,and the silage was sealed in bags for 60 days,and the pH value,nutritional quality and sensory quality of the silage were measured after opening,and the nutritional value and relative feeding value of each treatment were comprehensively evaluated by the grey correlation method.The results showed that the sensory evaluation grades of Avena sativa'Qingyin No.1'(Q1)and Huayouza 62+Avena sativa'Qingyin No.1'(H62+Q1)treatments were high-quality.The pH value of the seven treatments was between 3.8～4.1.The water content and crude ash content(Ash)of Q1 were significantly lower than those of other treatments(P＜0.05),the concentrations of dry matter(DM)and neutral detergent fiber(NDF)were significantly higher than those of other treatments(P＜0.05),and the relative feeding value(RFV)of the seven treatments was between 108～141.The relative feeding value(RFV)and dry matter intake(DMI)of Vicia faba L.variety'Qinghai 13'+Vicia sativa(Q13+J)silage were significantly higher than those of other treatments(P＜0.05).The results showed that the tested annual forage grass could be successfully silaged in the area around Qinghai Lake,and there was no inferior grade in the sensory evaluation of seven treatments,and Q13+J silage had the highest relative feeding value,the best palatability,and was easier to be eaten by livestock.According to the comprehensive analysis of the grey correlation method,the Q1 silage is more suitable for application and promotion in the area around Qinghai Lake.
area around Qinghai Lakeannual forage grassessilage qualitynutritional qualityrelative feeding valuegray correlation
万方数据
维普
