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195 results on '"Qu, Mingren"'

19. Machine Learning-Guided the Fabrication of Nanozyme Based on Highly-Stable Violet Phosphorene Decorated with Phosphorus-Doped Hierarchically Porous Carbon Microsphere for Portable Intelligent Sensing of Mpa in Silage

Author

Ge, Yu, primary, Liu, Peng, additional, Chen, Qian, additional, Qu, Mingren, additional, Xu, Lanjiao, additional, Liang, Huan, additional, Zhang, Xian, additional, Huang, Zhong, additional, Wen, Yangping, additional, and Wang, Long, additional

Published
2023
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23. Effect of dietary inclusion of tea residue and tea leaves on ruminal fermentation characteristics and methane production.

Author

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

Subjects
METHANE fermentation, FEED analysis, TEA
Abstract

The aim of this study was to compare the differences of dietary tea leaves (TL) and tea residue (TR) inclusion on rumen fermentation characteristics and to explore whether TR could be an alternative feedstuff of ruminants. For these purposes, seven treatments consisted of two inclusion types (TL vs. TR) and three inclusion levels (g/g of dry matter basis) of 10% (TL10/TR10), 20% (TL20/TR20), and 30% (TL30/TR30) in each inclusion type, plus control group with inclusion of 0% (CON) were designed, with four replicates in each group, to conduct an in vitro ruminal fermentation test. Results showed that the contents of crude protein, neutral detergent fiber, and acid detergent fiber were higher in TR than TL, while TL contained more ether extract and crude ash than TR. Interaction effects between inclusion type and inclusion level were observed in concentrations of isobutyrate and microbial crude protein (MCP), as well as in gas production and digestibility of organic matter. Fermentation characteristics were significantly influenced by TL and TR depending on the inclusion level, except for the concentration of total branched-chain volatile fatty acid. These significant differences of fermentation characteristics due to inclusion level mainly focused on CON and tea inclusion, with higher values in CON than TR or TL groups. The total gas production during the 48-h incubation showed no differences among CON, TL10, and TR10. The inclusion of TR and TL decreased the production of methane. The concentration of MCP in CON, TR10 and TR30 was lower than TR20 and all TL groups. In conclusion, dietary inclusion of TR and TL possessed equivalent effect on rumen fermentation characteristics and methane production, substituting diet with TR or TL for over 10% would inhibit rumen fermentation despite positive effects in TR20 and all TL groups regarding more MCP and less methane production. This study indicates that special attention should be paid to the inclusion level of TR and TL when considering them as alternative feedstuffs of ruminants. Further in vivo study is needed to evaluate the applicability of tea residue as a feedstuff for production of ruminants. [ABSTRACT FROM AUTHOR]

Published
2023
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40. Effects of daidzein on growth performance, blood metabolites and meat quality of finishing Xianan beef cattle

Author

Huan Liang, Kehui Ouyang, Yi Zhonghua, Zuodong Chen, Jun Bai, Xiaozhen Song, Xu Lanjiao, Qu Mingren, Chanjuan Liu, Xiang H. Zhao, Ke Pan, and X. L. Qi

Subjects
chemistry.chemical_classification, endocrine system, 0303 health sciences, Antioxidant, Chemistry, medicine.medical_treatment, Daidzein, 0402 animal and dairy science, food and beverages, Fatty acid, 04 agricultural and veterinary sciences, Beef cattle, 040201 dairy & animal science, Feed conversion ratio, Transaminase, 03 medical and health sciences, chemistry.chemical_compound, Animal science, Genetics, medicine, Animal Science and Zoology, Dry matter, Intramuscular fat, Agronomy and Crop Science, 030304 developmental biology
Abstract

An experiment was conducted to determine the effects of supplementing different amounts of daidzein in a diet on the growth performance, blood biochemical parameters and meat quality of finishing beef cattle. Thirty finishing Xianan steers were distributed in three groups equilibrated by weight and fed three different dietary treatments (concentrate ratio = 80%): (1) control; (2) 500 mg/kg daidzein and (3) 1000 mg/kg daidzein, respectively. Steers were slaughtered after an 80-day feeding trial. Results showed that daidzein supplementation had no effect on the final body weight, average daily gain and feed conversion rate of steers. Steers fed with 1000 mg/kg daidzein had greater dry matter intake than those fed with control diets. Compared with the control group, the 1000 mg/kg daidzein group had a higher fat thickness, lower shear force and lightness. The pH, drip loss, cooking loss, redness (a*), yellowness (b*), moisture, ash, crude protein and intramuscular fat of the Longissimus dorsi muscle were unaffected by daidzein supplementation. Compared with the control group, the 1000 mg/kg daidzein group significantly increased the serum concentrations of insulin, free fatty acid and Glutamic-pyruvic transaminase. The 500 mg/kg daidzein group significantly increased the serum concentration of tetraiodothyronine compared with the control group. Supplemental daidzein did not affect the blood antioxidant ability and blood immune parameters in serum. In conclusion, daidzein supplementation above 500 mg/day modifies feed intake and metabolic and hormonal profile, with positive and negative effects on meat quality.

Published
2019

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