摘要
The blackberry poses a threat as an invasive plant in various regions worldwide, where it aggressively competes with native species and risks delicate ecosystems. Livestock grazing has emerged as a potential strategy to mitigate its spread. This study investigated the effects of seasonal variations and altitude on the chemical composition and in vitro degradability of blackberry leaves. The leaves accessible to goats were collected in the Northwestern Italian Alps across all seasons at three altitudes (low: 450 m, medium: 700 m, high: 1000 m). The findings indicated that blackberry leaves can serve as a cost-effective, high-protein, and high-fiber feed for ruminants in these regions. However, the goats exhibited a limited capacity for fiber degradation. Furthermore, the nutritional value of these leaves was significantly influenced by the season, altitude, and their interaction. Spring leaves had the highest protein content (241.9 g/kg dry matter) and the best digestibility, with lower lignin levels (69 g/kg dry matter). At higher altitudes, lignin content decreased significantly during winter compared to the other seasons, resulting in a significant increase in fiber degradability. These insights offer crucial guidance for optimizing the utilization of the blackberry plant in goat feeding systems and underscores the necessity of considering both seasonal and altitudinal factors in grazing management practices.
摘要译文
黑莓在全球各个地区构成了侵入性植物的威胁,在那里它积极地与本地物种竞争,并冒着微妙的生态系统的风险。牲畜放牧已成为减轻其传播的潜在策略。这项研究研究了季节性变化和高度对黑莓叶的化学成分和体外降解性的影响。在所有季节的三个高度(低:450 m,中:700 m,高,高:1000 m)的所有季节中,在所有季节的意大利阿尔卑斯山中都收集了山羊的叶子。研究结果表明,黑莓叶可以作为这些地区的反刍动物的经济高效,高蛋白和高纤维饲料。但是,山羊表现出有限的纤维降解能力。此外,这些叶子的营养价值受到季节,高度及其相互作用的显着影响。弹簧叶具有最高的蛋白质含量(241.9 g/kg干物质)和最佳的消化率,木质素水平较低(69 g/kg干物质)。在较高的高度下,与其他季节相比,冬季木质素含量显着下降,从而导致纤维降解性显着增加。这些见解为优化黑莓植物在山羊喂养系统中的利用提供了重要的指导,并强调了在放牧管理实践中考虑季节性和海拔因素的必要性。
Sonia Tassone [1];Salvatore Barbera (https://orcid.org/0000-0002-0897-7962) [2];Sara Glorio Patrucco (https://orcid.org/0000-0003-2040-7708) [3];Hatsumi Kaihara [4];Khalil Abid (https://orcid.org/0000-0002-4070-5238) [5];. Seasonal and Altitudinal Effects on Chemical Composition and Rumen Degradability of Blackberry Leaves in Northwestern Italian Alps[J]. Animals, 2025,15(1): 111