Comparative analysis of production performance and nutritional quality of different forage sorghum varieties in Hexi Corridor
This study aimed to address the shortage of high-quality and high-yield forage in the livestock industry development of the arid and semi-arid planting areas of the Hexi Corridor.The experiment selected nine different sorghum forage varieties as research subjects.By measuring and analyzing traits such as growth period,production characteristics,forage yield,and nutritional quality,a variety comparison experiment was conducted.A comprehensive evaluation is carried out using fuzzy mathematical membership functions.The results showed that although there were differences in the phenological stages of the varieties,all could complete the entire growth process.The varieties Kewo No.2,Super Sweet King,and Liaotian No.1 had significantly higher fresh and dry forage yields of 125 803.10,118 317.04,102 914.09 kg/hm2,and 43 817.22,45 350.92,30 565.49 kg/hm2,respectively,compared to other varieties(P＜0.05).The variety BJ0906 had the highest content of crude protein(CP)at 12.56％and crude fat(EE)at 2.96％,which was significantly higher than other varieties(P＜0.05).The variety Yajin 4148 had the highest water-soluble carbohydrate(WSC)content at 40.60％,significantly higher than other varieties(P＜0.05).The variety with the lowest content of neutral detergent fiber(NDF)and acid detergent fiber(ADF)was BJ0906,with values of 40.24％and 27.34％,respectively,significantly lower than all other varieties except Super Sweet King(P＜0.05).The relative feed value(RFV)and relative forage quality(RFQ)were highest for BJ0906 and lowest for Hercules.The average membership function values were higher for BJ0906 and Super Sweet King,while the overall production performance was worst for Hercules.The study indicates that BJ0906 and Super Sweet King are suitable for large-scale planting in the arid and semi-arid planting areas of the Hexi Corridor,and appropriate varieties can be selected for different uses in actual production.
forage sorghumyieldnutritional qualityvariety comparisonmembership function
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