Silvopastoral systems with native forage species and their impact on milk production and quality: a case study on a farm in the Colombian Amazonian foothills

IF 2.2 3区农林科学 Q2 AGRONOMY

Agroforestry Systems Pub Date : 2025-09-15 DOI:10.1007/s10457-025-01292-8

Juan Pablo Narváez-Herrera, Joaquín Angulo-Arizala, Wilson Andrés Barragán-Hernández, Yenny Maricela Riascos-Guerrero, Liliana Mahecha-Ledesma

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Abstract

This study compared a silvopastoral system (SPS) with promising shrub and tree species against a traditional grazing system (TS) in the Amazonian foothills of Colombia, evaluating milk production and composition, dry matter intake (DMI), and economic performance. A crossover design was applied with 10 lactating gyr × holstein crossbreed cows. Dry matter intake, milk production and feed efficiency were significantly greater (p < 0.001) in the SPS (12.90 kg DM/day, 14.13 kg/cow/day, and 1.24 milk kg/kg DM) compared to TS (10.5 kg DM/day, 12.92 kg/cow/day, and 1.17 kg milk kg/kg DM) respectively. Although milk composition did not differ (p > 0.05) between systems, milk urea nitrogen (MUN) was greater in the SPS (11.9 vs. 10.2 mg/dL; p < 0.001), which reflects a greater protein intake consistent with the forage composition provided by this system. The SPS required a greater initial investment (USD 2240.85 vs. USD 501.62), resulting in a 4.08% increase in the production cost per kilogram of milk (USD 0.37 vs. USD 0.36). Nevertheless, the SPS demonstrated greater profitability, with a benefit-to-cost ratio (B/C) of 2.05, a greater net present value, and a shorter payback period (3.5 years). These results, highlight the potential of SPS as an effective strategy for improving dairy productivity and feed efficiency while mitigating environmental pressures in tropical livestock systems.

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具有本地牧草物种的森林系统及其对牛奶产量和质量的影响：对哥伦比亚亚马逊山麓农场的案例研究

本研究在哥伦比亚亚马逊山麓比较了具有前景的灌木和乔木种的森林放牧系统（SPS）与传统放牧系统（TS），评估了牛奶产量和成分、干物质摄入量（DMI）和经济效益。采用交叉试验设计，选用10头泌乳期吉荷斯坦杂交奶牛。SPS （12.90 kg DM/d、14.13 kg/奶牛/d、1.24产奶kg/kg DM）的干物质采食量、产奶量和饲料效率显著高于TS (10.5 kg DM/d、12.92 kg/奶牛/d、1.17 kg产奶kg/kg DM) （p < 0.001）。虽然不同系统之间的乳成分没有差异（p > 0.05），但SPS的乳尿素氮（MUN）更高（11.9 vs 10.2 mg/dL; p > 0.001），这反映了与该系统提供的饲料成分一致的更高的蛋白质摄入量。SPS需要更多的初始投资（220.85美元对501.62美元），导致每公斤牛奶的生产成本增加4.08%（0.37美元对0.36美元）。然而，SPS表现出更大的盈利能力，效益成本比（B/C）为2.05，净现值更高，投资回收期更短（3.5年）。这些结果突出了SPS作为一种有效战略的潜力，可以提高奶牛生产力和饲料效率，同时减轻热带牲畜系统的环境压力。

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来源期刊

Agroforestry Systems 农林科学-林学

CiteScore

5.30

自引率

9.10%

发文量

审稿时长

4.5 months

期刊介绍： Agroforestry Systems is an international scientific journal that publishes results of novel, high impact original research, critical reviews and short communications on any aspect of agroforestry. The journal particularly encourages contributions that demonstrate the role of agroforestry in providing commodity as well non-commodity benefits such as ecosystem services. Papers dealing with both biophysical and socioeconomic aspects are welcome. These include results of investigations of a fundamental or applied nature dealing with integrated systems involving trees and crops and/or livestock. Manuscripts that are purely descriptive in nature or confirmatory in nature of well-established findings, and with limited international scope are discouraged. To be acceptable for publication, the information presented must be relevant to a context wider than the specific location where the study was undertaken, and provide new insight or make a significant contribution to the agroforestry knowledge base