Effect of Total Mixed Ration on Growth Performance, Rumen Fermentation, Nutrient Digestion, and Rumen Microbiome in Angus Beef Cattle during the Growing and Fattening Phases
-
Published:2024-04-10
Issue:4
Volume:10
Page:205
-
ISSN:2311-5637
-
Container-title:Fermentation
-
language:en
-
Short-container-title:Fermentation
Author:
Li Wei1ORCID, Ye Boping1, Wu Baoyun1, Yi Xin1, Li Xiang1, A Runa1, Cui Xiaojing1, Zhou Zhiyu1, Cheng Yang1, Zhu Xiaowen1, Tang Xiren1, Fu Xinyue1, Li Ning1, Wu Hao1ORCID, Zhou Zhenming1
Affiliation:
1. The State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, China
Abstract
This study investigates the impact of varying concentrate levels in the diets of Angus beef cattle on their performance, nutrient digestion, and metabolism during the growth (7 to 12 months) and fattening (13 to 30 months) phases. Fifteen Angus steers were continuously fed and divided into low-concentrate (L) and high-concentrate (H) groups based on the fattening period and dietary formulations. Throughout each 9-week trial phase, a comprehensive range of parameters was systematically measured, including dry matter intake (DMI), average daily gain (ADG), gain-to-feed ratio (G/F), blood parameters, rumen fluid composition, and microbial diversity. In the fattening phases, an increase in concentrate levels resulted in a significant rise in the cattle’s DMI. Although there was a minor increase in ADG compared to the growing phases, this increase was not statistically significant. The efficiency of nitrogen (N) utilization in the cattle decreased, accompanied by a significant reduction in the apparent digestibility of nutrients. Ruminal fermentation produced more energy substances; however, there was a notable decrease in the abundance of fiber-decomposing microbes (such as the NK4A214_group, Ruminococcus, Papillibacter, and Acetitomaculum) and a significant increase in the abundance of starch-degrading microbes (including Bacteroidota and Prevotellaceae). Additionally, there was a significant reduction in the abundance of immune system-related functional pathways. This suggests that high-concentrate fattening does not necessarily lead to improved growth performance and may negatively affect metabolic health and nutrient digestion.
Funder
the National Key R&D Program of China the Government Purchase Service
Reference55 articles.
1. Xu, L., Yang, L., Wang, L., Zhu, B., Chen, Y., Gao, H., Gao, X., Zhang, L., Liu, G.E., and Li, J. (2019). Probe-Based Association Analysis Identifies Several Deletions Associated with Average Daily Gain in Beef Cattle. BMC Genom., 20. 2. Krusinski, L., Maciel, I.C., Sergin, S., Goeden, T., Schweihofer, J.P., Singh, S., Rowntree, J.E., and Fenton, J.I. (2022). Fatty Acid and Micronutrient Profile of Longissimus Lumborum from Red Angus and Red Angus x Akaushi Cattle Finished on Grass or Grain. Foods, 11. 3. Morittu, V.M., Spina, A.A., Iommelli, P., Poerio, A., Oliverio, F.V., Britti, D., and Tudisco, R. (2021). Effect of Integration of Linseed and Vitamin E in Charolaise\times Podolica Bulls’ Diet on Fatty Acids Profile, Beef Color and Lipid Stability. Agriculture, 11. 4. Evaluation of Active Dried Yeast in the Diets of Feedlot Steers—I: Effects on Feeding Performance Traits, the Composition of Growth, and Carcass Characteristics;Crossland;J. Anim. Sci.,2019 5. Changes in Bacterial Diversity Associated with Epithelial Tissue in the Beef Cow Rumen during the Transition to a High-Grain Diet;Chen;Appl. Environ. Microbiol.,2011
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|