CAJ | 학술논문

根据肉牛不同发育阶段的生理特点和补偿代谢机制，采用分阶段低精料日粮设计方案，育肥前期以粗饲料为主，适当补充蛋白饲料，育肥后期以高能量饲料为主，粗饲料作为调节适量饲喂。通过与持续精料日粮方案对比可知，低精料日粮方案育肥牛平均日增重1.57 kg，较持续精料日增重相对提高了15.9%；低精料日粮方案节约精饲料用量、降低育肥成本，饲养成本较持续精料日粮方案降低了22.7%。试验结果表明，分阶段低精料日粮设计方案可减轻持续饲喂精料对育肥牛瘤胃造成的伤害，进而保证了育肥牛的健康生长。
근거육우불동발육계단적생리특점화보상대사궤제，채용분계단저정료일량설계방안，육비전기이조사료위주，괄당보충단백사료，육비후기이고능량사료위주，조사료작위조절괄량사위。통과여지속정료일량방안대비가지，저정료일량방안육비우평균일증중1.57 kg，교지속정료일증중상대제고료15.9%；저정료일량방안절약정사료용량、강저육비성본，사양성본교지속정료일량방안강저료22.7%。시험결과표명，분계단저정료일량설계방안가감경지속사위정료대육비우류위조성적상해，진이보증료육비우적건강생장。
The phased low-concentrated diet scheme was adopted based on cattle physiological characteristics and metabolic compensation mechanisms at different developmental stages. On the former stage of fattening, the cattle were mainly fed with roughage complemented with appropriate amount of protein feed;on the latter stage of fattening, the cattle were mainly fed with high energy feed with appropriate amount of roughage as adjustment. Compared with continuous concentrated diet scheme, the results showed that the cattle ADG of low concentrated diet scheme was 1.57 kg, which was increased by 15.9%relatively;low-concentrate diet scheme saved concentrated feed consumption, and reduced the cost of fattening by 22.7%. Meanwhile, the phased low-concentrated diet scheme could reduce damage of continuous concentrated diet on rumen so as to ensure the healthy growth of fattening cattle.