微生物制剂处理秸秆日粮对肉牛生产性能和养殖效益的影响

doi:10.12160/j.issn.1672-5190.2020.05.007

Abstract

Abstract: The aims of this study were to explore a new technique of corn straw modulation and to improve the diet utilization rate. A feeding experiment was carried out in beef cattle using the diets based on corn straw fermented with compound enzyme preparation （experimental groupⅠ） and live yeast preparation (experimental groupⅡ). The basial diet was served as control. The effects of feeding different diets on production performance and breeding benefits of beef cattle was assessed. The results demonstrated that the experimental groupⅡhad significantly （P<0.05） higher average daily weight gain compared to the experimental group Ⅰand control group, and the feed cost of per kilogram weight gain of the experimental groupⅡwas 0.91 yuan and 1.83 yuan lower than that of the experimental group Ⅰand control group, respectively. In summary, feeding the diets based on corn straw fermented with live yeast preparation significantly improves the production performance of beef cattle, and increase the feeding benefits.

Key words: corn straw, microbial preparation, beef cattle, production performance, feeding benefits

CLC Number:

ZHENG Hai-ying, LI Jiu-yue, XUE Shu-yuan, WANG Xiao-peng, JIA Wei-xing. Effects of Diets Based on Corn Straw Fermented with Microbial Agents on Production Performance and Feeding Benefits of Beef Cattle[J]. Animal Husbandry and Feed Science, 2020, 41(5): 37-40.

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CRISPR/Cas9基因编辑技术原理及其在牧草中的应用
19 张筱, 白薇
20 (内蒙古农业大学植物逆境生理与分子生物学内蒙古自治区重点实验室, 内蒙古呼和浩特 010011)
21 摘要:CRISPR/Cas9系统是一种新型RNA靶向的基因编辑系统.在近几年的研究中, CRISPR/Cas9基因编辑技术的发展十分迅猛, 因其具有经济、高效、简便的特点而广泛应用于育种、医疗、工业等领域.介绍了2种新型基因编辑技术, 阐述了CRISPR/Cas9的结构、功能以及CRISPR/Cas9基因编辑技术原理, 综述了该技术在牧草中的应用研究进展, 以期为利用CRISPR/Cas9系统研究牧草基因功能及改良牧草性状提供思路.
22 关键词:CRISPR/Cas9;基因编辑;牧草;应用
23 中图分类号:Q943.2;S540.3 文献标志码:A 文章顺序编号:1672-5190(2020)05-0041-05
24 Principle of CRISPR/Cas9 Gene Editing Technology and Its Application in
25 Forage Grass
26 ZHANG Xiao, BAI Wei
27 (Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot 010011, China)
28 Abstract:The CRISPR/Cas9 is a new type of RNA-targeted gene editing system. In recent years, the CRISPR/Cas9 gene editing technology has gained rapid development.Due to its economical, efficient and convenient features, CRISPR/Cas9 gene editing technology is widely used in breeding, medicine, industry and other fields. This paper introduces two types of newly developed gene editing technologies, elaborates the structure and function of CRISPR/Cas9, expounds the principle of CRISPR/Cas9 gene editing technology, and summarizes the application of this technology in forage grass, in hoping to provide references for investigating the forage grass gene function and improving forage grass traits by applying CRISPR/Cas9 gene editing technology.
29 Keywords:CRISPR/Cas9;gene editing;forage grass;application

Effects of Diets Based on Corn Straw Fermented with Microbial Agents on Production Performance and Feeding Benefits of Beef Cattle

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