Analysis of Yield and Nutrient Content of Different Varieties of Italian Ryegrass in Maguan County
The purpose of this study was to compare the yield and nutrient composition of different varieties of Italian ryegrass planted in the beef cattle breeding base in Ma Guan County,and to select the best varieties to meet the demand for pasture grasses in the local beef cattle breeding base.Four varieties of Italian ryegrass,namely Dalaoban,Adena,Zuanshi T and Tegao,were selected for planting trials.The pasture was mowed to measure the yield when it grew to the point that most of the leaves were green after irrigation and before summer sowing.Samples were taken for nutrient composition analysis.The results showed that dry yield of Dalaoban was significantly higher than Adena(P＜0.05);crude protein yield and net energy of gain(NEg)of Tegao were significantly higher than those of Adena and Dalaoban(P＜0.05);dry matter(DM)content was significantly(P＜0.05)different among varieties;crude fat(EE)content of Zuanshi T was significantly higher than that of Dalaoban(P＜0.05);crude ash(Ash)of Tegao content was significantly higher(P＜0.05)than Dalaoban,Zuanshi T and Adena;Tegao crude protein(CP),phosphorus(P)and neutral detergent insoluble protein(NDICP)contents were significantly higher than the other varieties(P＜0.05);calcium(Ca),neutral detergent fibre(NDF),acid detergent fibre(ADF),acid detergent insoluble protein(ADICP),lignin(ADL),and acid insoluble ash(AIA)contents were significantly higher in Dalaoban,Adena,and Zuanshi T than in Tegao(P＜0.05).The digestive energy(DE)of the four varieties of Italian ryegrass in this experiment ranged from 2.69 to 3.08 Mcal/kg,metabolisable energy(ME)from 2.26 to 2.67 Mcal/kg,net energy for maintenance(NEm)from 1.40 to 1.75 Mcal/kg,and net energy for weight gain(NEg)from 0.81 to 1.13 Mcal/kg.It was found that the Italian ryegrass variety suitable for cultivation in Maguan County was Tegao,followed by Zuanshi T in terms of mu yield,nutrient content and energy as a comprehensive evaluation index.
Italian ryegrassYieldNutritional compositionEnergy
万方数据
维普
