Purwin Cezary, Borsuk-Stanulewicz Marta, Nogalski Zenon, Baranowska Maja, Zygmuntowicz Aleksandra, Michalski Jacek P
Department of Animal Nutrition and Feed Science, University of Warmia and Mazury in Olsztyn, Olsztyn, 10-719, Poland.
previously published under the name Marta Borsuk.
Arch Anim Breed. 2022 Feb 22;65(1):89-96. doi: 10.5194/aab-65-89-2022. eCollection 2022.
The aim of the current study is to evaluate Virginia fanpetals silage based on an apparent digestibility and palatability test performed on six adult rams. Alfalfa silage was used as standard forage for comparison. Virginia fanpetals samples were harvested in the bud-formation stage and alfalfa samples were harvested in the late bud stage. Virginia fanpetals silage had a crude protein (CP) content of 176 g kg dry matter (DM), a neutral detergent fiber (NDF) content of 378 g kg DM, and a lignin content of 42.8 g kg DM. Virginia fanpetals silage had higher acidity (pH of 4.30) and was characterized by intense lactic acid fermentation compared with alfalfa silage (80 % vs. 51 % of the total acids). The digestibility coefficient of Virginia fanpetals silage was as follows: for DM it was 0.707, for organic matter (OM) it was 0.724, for CP it was 0.861, and for NDF it was 0.609. In comparison with alfalfa silage, Virginia fanpetals silage was characterized by higher apparent digestibility of nutrients, but a significant difference was noted only for CP. The voluntary intake of Virginia fanpetals silage was significantly higher than that of alfalfa silage (1427.4 vs. 954 g DM). The greatest differences in voluntary intake were observed 0-2 and 8-12 h after feeding. Virginia fanpetals silage had a chemical composition similar to that of alfalfa, but it was characterized by a more desirable fermentation pattern and higher digestibility, and it was more willingly consumed by rams. The present findings indicate that Virginia fanpetals silage can be fed to sheep.
本研究的目的是通过对六只成年公羊进行表观消化率和适口性测试，来评估弗吉尼亚扇叶茅青贮饲料。苜蓿青贮饲料用作对照标准饲草。弗吉尼亚扇叶茅样品在花芽形成期收获，苜蓿样品在芽后期收获。弗吉尼亚扇叶茅青贮饲料的粗蛋白（CP）含量为176 g/kg干物质（DM），中性洗涤纤维（NDF）含量为378 g/kg DM，木质素含量为42.8 g/kg DM。与苜蓿青贮饲料相比，弗吉尼亚扇叶茅青贮饲料酸度更高（pH值为4.30），其特点是乳酸发酵强烈（占总酸的80%，而苜蓿青贮饲料为51%）。弗吉尼亚扇叶茅青贮饲料的消化率系数如下：干物质为0.707，有机物（OM）为0.724，粗蛋白为0.861，中性洗涤纤维为0.609。与苜蓿青贮饲料相比，弗吉尼亚扇叶茅青贮饲料的营养物质表观消化率更高，但仅粗蛋白存在显著差异。弗吉尼亚扇叶茅青贮饲料的自愿采食量显著高于苜蓿青贮饲料（1427.4对954 g DM）。采食后0 - 2小时和8 - 12小时观察到自愿采食量差异最大。弗吉尼亚扇叶茅青贮饲料的化学成分与苜蓿相似，但其发酵模式更理想，消化率更高，公羊更愿意采食。目前的研究结果表明，弗吉尼亚扇叶茅青贮饲料可用于喂羊。
