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草地学报  2014 

不同粗饲料日粮对泌乳牛产奶性能及经济效益的影响

DOI: 10.11733/j.issn.1007-0435.2014.06.036, PP. 1375-1380

Keywords: 粗饲料,奶牛,生产性能,经济效益

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Abstract:

为研究不同粗饲料日粮对奶牛产奶量、乳成分和经济效益的影响,选取体重、年龄、胎次、泌乳日龄相近的荷斯坦奶牛25头,分别饲喂玉米(Zeamays)秸秆(100%)、玉米秸秆(70%)+苜蓿(Medicagosativa)干草(30%)、羊草(Leymuschinensis)(70%)+苜蓿干草(30%)、全株玉米青贮(70%)+苜蓿干草(30%)和全株玉米青贮(50%)+羊草(30%)+苜蓿干草(20%),精粗比5050.结果表明与粗饲料单纯饲喂玉米秸秆相比,全株玉米青贮+苜蓿干草组可提高产奶量26.52%,提高乳脂率6.03%,增收3.87元·头-1·d-1;其次为全株玉米青贮+羊草+苜蓿干草组,可提高产奶量21.20%,提高乳脂率4.6%,增收2.83元·头-1·d-1;再次为玉米秸秆+苜蓿干草组可提高产奶量10.05%,提高乳脂率2.59%,增收2.46元·头-1·d-1;羊草+苜蓿干草组可提高产奶量11.85%,提高乳脂率2.01%,增收不明显.表明全株玉米青贮+苜蓿干草组饲喂效果最好.

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