期刊
ANIMAL FEED SCIENCE AND TECHNOLOGY
卷 276, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.anifeedsci.2021.114943
关键词
Biorefining; Grass-clover; Organic pig production; Fatty acids
资金
- [Green Development and Demonstration Program] SupergrassPork project
The study demonstrates that protein extracted from organic forages can be used as a protein source for organic slaughter pigs. Addition of grass-clover protein extract did not affect feed intake or growth in pigs, but increased meat percentage at slaughter.
The purpose of the study was to extract protein from organic grass-clover in a green biorefining process and perform a dose-response feeding experiment with pigs on feed utilization, performance and slaughter quality. Forty-eight pigs were fed one of four experimental diets from 1 week post-weaning to slaughter. The diets consisted of a control diet and diets with 5, 10, or 15 % freeze-dried extracted grass-clover protein included. The extracted protein had a crude protein content of 458 g/kg dry matter, a content of total sulphur-containing amino acids comparable to soybean press cake but a lower lysine content. Acid-insoluble residue constituted 215 g/kg dry matter, and the dominating fatty acid was alpha-linoleic acid. Addition of grass-clover protein extract to the diet did not affect feed intake or growth in starter, grower, or finisher pigs, and no difference was found in animal slaughter weight. The meat percentage measured at slaughter increased linearly with inclusion of grass-clover protein in the feed. Increased addition of grassclover increased the content of n-3 fatty acids and lowered the n-6/n-3 ratio in adipose tissue, liver, and Longissimus dorsi muscle as well as the alpha-tocopherol content. In conclusion, this study shows that protein extracted from organic forages through green biorefining can be used as a protein source for organic slaughter pigs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据