Byproduct-based concentrates in Swedish dairy cow diets – evaluation of environmental impact and feed costs

IF 0.8 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Acta Agriculturae Scandinavica Section A-Animal Science Pub Date : 2021-09-19 DOI:10.1080/09064702.2021.1976265

M. Lindberg, M. Henriksson, S. Jacobsson, M. Lundberg

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引用次数: 3

Abstract

ABSTRACT This study compared use of byproduct-based concentrates and a control feed based on cereal grains and soybean meal in dairy cow diets and evaluated effects on the environment and feed costs. To achieve a nutrient-dense feed ration to dairy cows byproducts are commonly combined with cereal grains and protein-rich feeds such as soybean meal. The present analysis was based on experimental data for high-yielding dairy cows showing that feeding concentrate based on byproducts gives similar milk yield as feeding concentrate based on cereal grains and soybean meal. Evaluation of the different concentrates using life cycle assessment showed that using byproducts required less cropland (−35%), reduced carbon footprint (−20%) and lowered eutrophication potential (−20%) compared with the control. Energy use was higher (+30%), due to the need for drying wet byproducts. Feed costs per kg energy-corrected milk did not differ between the feeds, which is beneficial from a sustainability perspective.

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瑞典奶牛日粮中以副产品为基础的浓缩物——环境影响和饲料成本的评估

本研究比较了奶牛饲粮中以副产品为基础的浓缩饲料和以谷物和豆粕为基础的对照饲料的使用情况，并评估了它们对环境和饲料成本的影响。为了给奶牛提供营养丰富的日粮，副产品通常与谷物和富含蛋白质的饲料(如豆粕)混合使用。本分析基于高产奶牛的实验数据，表明以副产品为基础的饲粮浓缩物与以谷物和豆粕为基础的饲粮浓缩物的产奶量相似。利用生命周期评价方法对不同浓缩物进行评价表明，与对照相比，利用副产物所需耕地减少(- 35%)，碳足迹减少(- 20%)，富营养化潜势降低(- 20%)。由于需要干燥潮湿的副产品，能源消耗更高(+30%)。每公斤能量修正奶的饲料成本在不同饲料之间没有差异，这从可持续发展的角度来看是有益的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Agriculturae Scandinavica Section A-Animal Science 农林科学-奶制品与动物科学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Acta Agriculturæ Scandinavica, Section A – Animal Science publishes results of original research in animal science and their applications related to the following topics: -Animal breeding and genetics -Molecular genetics -Animal physiology and reproduction -Nutrition and feeding -Animal behaviour and welfare -General animal husbandry and systems of production, including economic and technical aspects -Hygiene and quality of animal products In addition to original articles, covering basic as well as applied subjects, the journal features review articles and short communications. Acta Agriculturæ Scandinavica, Section A – Animal Science forms part of a trilogy of titles published on behalf of the Nordic Association of Agricultural Scientists (NJF). The series also includes Section B - Soil & Plant Science and the recently launched Section C - Food Economics . Acta Agriculturae Scandinavica A, B and C are available to purchase as a combined subscription. This provides access to all three journals in the series, and is available to institutional subscribers only. For full pricing information, please view the Taylor & Francis Journals Price List here. Scientists in research, teaching and extension with specialised interest in animal science and production.