Realizing economic and environmental gains from cultivated forages and feed reserves in Ethiopia

Bhramar Dey, A. Notenbaert, H. Makkar, S. Mwendia, Y. Sahlu, M. Peters
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引用次数: 3

Abstract

The livestock sector in Ethiopia is characterized by low productivity due to inadequate supply of affordable high-quality animal feed year-round, with more acute gaps in the drought-prone regions of the country. This paper presents the economic benefits and insights into the role of cultivated forages, such as densification into pellets, in bridging gaps in feed supply. Nutrient requirement calculations for feedlot and dairy animals and meeting those requirements using cultivated forage-based diets are presented. However, forage crops need a viable forage seed supply system to assure access to quality assured seeds. This study thus explores the role of forage seed systems and presents intervention areas for Ethiopia. Results suggest diets containing greater than 85% cultivated forages can sustain daily body weight gain up to 1 kg in growing animals. The costs of nutrients from cultivated forages are up to 15-fold lower than those from conventional feed resources. The diets based on pelleted cultivated forages decrease costs of feeding animals during a 100-day drought period by 4-fold, fattening animals by 2.3-fold, and cost of feed for milk production by 4-fold. Utilization of cultivated forages could reduce methane emissions with abatement value between $165 and $240 USD per 1000 kg of body weight gain in the fattening sector. For the dairy sector, the abatement value would range from $1350 to $2400 USD per million liters of milk production. For the drought period of 120 days, the value of methane reductions would be between $5500 and $11,400 USD per 1000 animals.
实现埃塞俄比亚种植牧草和饲料储备的经济和环境效益
埃塞俄比亚畜牧业的特点是,由于全年负担得起的高质量动物饲料供应不足,生产力低下,该国干旱易发地区的缺口更为严重。本文介绍了经济效益和对种植饲料的作用的见解,如致密化成颗粒,在弥补饲料供应的差距。提出了饲养场和奶牛场动物营养需要量的计算方法,并介绍了利用栽培牧草为基础的饲粮满足这些需求的方法。然而,饲料作物需要一个可行的饲料种子供应系统,以确保获得有质量保证的种子。因此,本研究探讨了饲料种子系统的作用,并提出了埃塞俄比亚的干预领域。结果提示,饲粮中栽培饲料含量大于85%,可维持生长动物日增重达1 kg。从栽培牧草中获取营养的成本比从传统饲料资源中获取营养的成本低15倍。在100天干旱期,以颗粒化栽培饲料为基础的饲粮可将动物饲养成本降低4倍,将动物育肥成本降低2.3倍,将产奶饲料成本降低4倍。利用栽培牧草可以减少甲烷排放,在育肥部门,每增加1000公斤体重的减排价值在165美元至240美元之间。对于乳制品行业来说,每百万升牛奶生产的减排价值将从1350美元到2400美元不等。在120天的干旱期,每1000头牲畜减少的甲烷价值将在5500美元到11400美元之间。
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