Shoup Sarah Lynn, Muntifering Russell Brian, Mullenix Mary Kimberly, Silva Liliane Severino, Dillard Sandra Leanne
Department of Animal Sciences, Auburn University, Auburn, AL 36849, USA.
Department of Animal and Veterinary Sciences, Clemson University, Blackville, SC 29817, USA.
Animals (Basel). 2022 Oct 25;12(21):2929. doi: 10.3390/ani12212929.
In southeastern USA, the use of baleage has increased as an alternative technology to hay production, thereby allowing for a timelier harvest of the conserved forage. A series of studies were conducted to determine the nutritive value, fermentation parameters, and in situ disappearance of the cool-season annual forage mixtures that were ensiled with or without silage inoculant for up to 120 d. The forage mixtures were wheat (Triticum aestivum L.) + brassica hybrid (Brassica rapa L. × napus L.) (WB), wheat + crimson clover (Trifolium incarnatum L.) (WC), and annual ryegrass (Lolium multiflorum Lam.) + oat (Avena sativa L.) + crimson clover (ROC). The inoculant strategy affected the CP concentration (p < 0.05), with it increasing in WB and decreasing in ROC. Among the mixtures, the DM concentration decreased by up to 5%, and the NDF and ADF concentrations decreased by up to 10% during the ensiling period. The pH averaged 5.0, 5.0, and 5.5 for the WC, WB, and ROC mixtures, respectively. Based on our results, the baleage of the cool-season annual forage mixtures may provide a viable high-quality option to sustain animal growth and performance.
在美国东南部，作为干草生产的替代技术，裹包青贮饲料的使用有所增加，从而能更及时地收获青贮饲料。开展了一系列研究，以确定在添加或不添加青贮接种剂的情况下，冷季一年生牧草混合物青贮长达120天的营养价值、发酵参数和原位消失率。牧草混合物包括小麦（普通小麦）+甘蓝型杂交油菜（白菜型油菜×甘蓝型油菜）（WB）、小麦+绛车轴草（绛三叶）（WC）以及一年生黑麦草（多花黑麦草）+燕麦（燕麦）+绛车轴草（ROC）。接种策略对粗蛋白浓度有影响（p<0.05），WB中的粗蛋白浓度增加，而ROC中的粗蛋白浓度降低。在青贮期间，混合物中的干物质浓度下降了5%，中性洗涤纤维和酸性洗涤纤维浓度下降了10%。WC、WB和ROC混合物的pH值平均分别为5.0、5.0和5.5。根据我们的研究结果，冷季一年生牧草混合物的裹包青贮饲料可能是维持动物生长和生产性能的可行的高质量选择。
