Effect of dietary inclusion of tea residue and tea leaves on ruminal fermentation characteristics and methane production

Qiu, Qinghua; Xiao, Wei; Zhang, Li; Li, Yanjiao; Qu, Mingren; Ouyang, Kehui

doi:10.1080/10495398.2021.1998092

Cited by 7 publications

(6 citation statements)

References 42 publications

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“…In this study, a higher concentration of MCP was observed owing to the dietary supplementation of glutamate, which promoted rumen microbial growth (16,17). The NH 3 -N is the main source of nitrogen for rumen microbial protein synthesis, and its utilization rate reflects the balance between substrate nitrogen degradation and microbial synthesis utilization (37). In the present study, the NH 3 -N concentration was notably increased by adding glutamate, which was consistent with a previous report demonstrating that dietary glutamate addition increased the NH 3 -N concentration in dairy cows (38).…”

Section: Glutamate Improves Rumen Fermentationmentioning

confidence: 63%

Glutamate Supplementation Improves Growth Performance, Rumen Fermentation, and Serum Metabolites in Heat-Stressed Hu Sheep

Zhang

et al. 2022

Front. Nutr.

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This study evaluated the effect of glutamate supplementation on the physiological parameters of heat-stressed Hu sheep. Forty-eight male Hu sheep with an average initial body weight of 17.74 ± 0.17 kg were randomly divided into two groups: The control group (CON) was fed a basal diet and a treatment group (GLU) was fed a basal diet + 3 g/head/day of L-glutamate. There were six replications in each group with four sheep in each replication for a 90 days feeding test. Growth performance, serum biochemistry, and serum hormones were measured during phase 1 (1–30 days), phase 2 (31–60 days), and phase 3 (61–90 days) of the experiment; rumen fermentation characteristics, nutrient digestibility, and slaughter performance were measured at the end of the experimental periods. There were no differences in growth performance, serum biochemical indices, and immune indices between CON and GLU during phases 1 and 2. However, a higher average daily gain (ADG), a lower average daily feed intake (ADFI), and a lower F:G ratio (ADFI/ADG) were observed in GLU during phase 3 (p < 0.05). Serum levels of glutamate, globulin, immunoglobulin A, immunoglobulin G, immunoglobulin M, and growth hormone in GLU were higher than those in CON only on day 90 (p < 0.05). Serum levels of heat shock protein 70, adrenocorticotrophic hormone, corticosterone, triiodothyronine, and tetraiodothyronine in GLU were lower than those in CON on day 90 (p < 0.05). At the end of the experiment, ruminal pH, microbial crude protein, ammonia nitrogen, and isovalerate concentrations in GLU were higher than those in CON (p < 0.05). The apparent digestibility of dry matter, organic matter, and crude protein in GLU was higher than those in CON (p < 0.05). There were no differences in carcass traits and organ indices but spleen weight and spleen index tended to be higher in GLU. In conclusion, dietary glutamate supplementation improved rumen fermentation, increased nutrition digestibility and metabolism, enhanced immunity, and promoted growth performance of heat-stressed Hu sheep. This suggests that a longer period of glutamate supplementation (not less than 60 days) at a level of 3 g/head/day is beneficial to Hu sheep under heat stress.

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Section: Glutamate Improves Rumen Fermentationmentioning

confidence: 63%

Glutamate Supplementation Improves Growth Performance, Rumen Fermentation, and Serum Metabolites in Heat-Stressed Hu Sheep

Zhang

et al. 2022

Front. Nutr.

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“…Both the standard curve and sample determination were performed by a gas chromatograph (GC-2014 Shimadzu Corporation, Kyoto, Japan) with nitrogen as the carrier gas, and the injection volume and injector temperature were kept at 0.4 µL and 220 °C, respectively. The oven procedure was the same as Qiu et al [ 30 ]. Rumen fermentation patterns were indicated by the acetate to propionate ratio, non-glucogenic to glucogenic acids ratio (NGR), and fermentation efficiency.…”

Section: Methodsmentioning

confidence: 99%

Diet Shift May Trigger LuxS/AI-2 Quorum Sensing in Rumen Bacteria

Xiao

Long

et al. 2022

Bioengineering

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Recent studies have revealed that LuxS/AI-2 quorum sensing (QS) is the most universal cell-to-cell communication in rumen bacteria; however, it remains unknown how they respond to nutritional stress from a diet shift. This study aimed to explore whether a diet shift could trigger rumen bacterial LuxS/AI-2 QS and its influences on rumen fermentation characteristics and bacterial community diversity and composition. A total of fifteen Hu sheep were selected to undergo a pre-shift diet (Pre, concentrate to forage ratio 75:25) for one month and then abruptly switch to a post-shift diet (Post, concentrate to forage ratio 49:51). Results showed that the serum cortisol and immunoglobulin G concentrations were higher in Post than in Pre (p < 0.05). The microbial density, AI-2 concentration, biofilm formation, and gene expression of ftsH were higher in Post when compared with Pre (p < 0.05), whilst the expression of luxS tended to be lower in Post (p = 0.054). The molar concentration of valerate and fermentation efficiency decreased after the diet shift, while the acetate to propionate ratio and the molar proportion of butyrate were higher in Post compared to Pre (p < 0.05). Moreover, the diet shift increased the richness of ruminal bacteria and the relative abundance of Roseburia, and decreased the relative abundances of Prevotella, Megasphaera, Dialister, Prevotellaceae UCG-001, and Lachnospira (p < 0.05). A difference in trends was also observed in an analysis of similarity (R = 0.1208 and p = 0.064). This study suggests that a diet shift could trigger rumen bacterial LuxS/AI-2 QS by altering microbial density, AI-2 concentration, biofilm formation, and related gene expression, as well as affect the rumen fermentation pattern and bacterial community diversity and composition. This study may provide insight into a potential strategy for relieving nutritional stress via regulating bacterial communication.

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“…Tea residue can also be used for making feed. Qiu [47] used solid-state fermentation of tea residue feed and found that the protein content in this feed is higher, which leads to less methane production and can also inhibit rumen fermentation. Preparation of adsorption materials is also one of the ways to use tea residue.…”

Section: Other Biomass Raw Materialsmentioning

confidence: 99%

Analysis of the Application Prospect of Biochar Production From Characteristic Solid Waste Biomass Resources in the Qinghai-Tibet Plateau

Li,

Zhao,

Zhou

et al. 2024

Pol. J. Environ. Stud.

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The Qinghai-Tibet Plateau is an important ecological security barrier in China. Considering the rich local waste biomass with a single treatment method and low level of resource utilization, biochar utilization of solid waste biomass can be carried out based on the research that biochar has abundant material sources. According to the application methods of various types of solid waste resources that have not been carried out, this review analyzes and discusses various types of waste biomass resources in the plateau region, such as sewage plant sludge, food waste, green leaves, barley straw, yak manure, and the unique Tibetan tea and Tibetan medicine residue waste, and reviews the biochar methods and applications for similar raw materials at home and abroad. Further, the technical outlook of solar pyrolysis technology and UV radiation modification technology and the development of hybrid pyrolysis to enhance the performance of biochar materials and heavy metal passivation are proposed by utilizing the solar energy resources of the Tibetan Plateau. Collectively, it provides a reference for prevention and restoration methods for the fragile ecological environment of the Qinghai-Tibet Plateau, reduces the pressure of waste disposal in the region, and realizes the resource utilization of waste.

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Effect of dietary inclusion of tea residue and tea leaves on ruminal fermentation characteristics and methane production

Cited by 7 publications

References 42 publications

Glutamate Supplementation Improves Growth Performance, Rumen Fermentation, and Serum Metabolites in Heat-Stressed Hu Sheep

Glutamate Supplementation Improves Growth Performance, Rumen Fermentation, and Serum Metabolites in Heat-Stressed Hu Sheep

Diet Shift May Trigger LuxS/AI-2 Quorum Sensing in Rumen Bacteria

Analysis of the Application Prospect of Biochar Production From Characteristic Solid Waste Biomass Resources in the Qinghai-Tibet Plateau

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