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Effect of N-Carbamylglutamate(NCG) on Growth Performance of ICR Mice 被引量:1
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作者 Hong Weiming Xu Yi +2 位作者 Song Liang Li Peng Zuo Weiyong 《Animal Husbandry and Feed Science》 CAS 2018年第2期113-114,共2页
To understand the effects of self synthesized N-carbamylglutamate(NCG) on growth performance of ICR mice,mice were fed with the basal diet adding with 0.025%,0.05% and 0.1% NCG for 28 d.Effects of different levels o... To understand the effects of self synthesized N-carbamylglutamate(NCG) on growth performance of ICR mice,mice were fed with the basal diet adding with 0.025%,0.05% and 0.1% NCG for 28 d.Effects of different levels of NCG on body weight of mice were observed.The re-sults showed that the addition of NCG in the feed could improve the growth performance of mice,and the growth-promoting effect enhanced with the increasing dose. 展开更多
关键词 N-Carbamylglutamate (NCG) IGR mice Growth performance Growth promotion LEVEL
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Short-term effect of supplemental yeast extract without or with feed enzymes on growth performance, immune status and gut structure of weaned pigs challenged with Escherichia coli lipopolysaccharide 被引量:1
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作者 Samuel M.Waititu Fugui Yin +2 位作者 Rob Patterson Juan C.Rodriguez-Lecompte Charles M.Nyachoti 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2017年第2期378-390,共13页
Background: This study investigated the response of piglets receiving a yeast extract without or with a multi-enzyme mixture compared with an antimicrobial growth promoter(AGP) on performance, immune status and gut... Background: This study investigated the response of piglets receiving a yeast extract without or with a multi-enzyme mixture compared with an antimicrobial growth promoter(AGP) on performance, immune status and gut structure after an E. coli lipopolysaccharide(LPS) challenge. Thirty-six pigs were allotted to six treatments including: a non-challenged control(NCC); LPS-challenged control(CC); CC + AGP; CC + yeast extract; CC + enzymes; and CC + enzymes + yeast extract. On d 7, pigs were bled and thereafter injected with LPS or sterile saline. Blood samples were collected at 6, 48, and 96 h post-challenge. After 96 h post-challenge, pigs were euthanized to obtain duodenal, jejunal and ileal samples.Results: Overall(d 1 to 11), compared with CC pigs, AGP attenuated the LPS-induced reduction in ADG(P = 0.004),ADFI(P = 0.03) and gain/feed ratio(P = 0.01). At 6 h post-challenge, AGP pigs had lower plasma urea N(PUN; P = 0.02)and serum TNF-α concentration(P = 0.07), and higher platelet count(P = 0.04) and serum IL-10 concentration(P = 0.02) than CC pigs. At 48 h post-challenge, AGP pigs had lower PUN(P = 0.02) than CC pigs, whereas enzymes + yeast extract interacted non-additively(P = 0.001) to reduce PUN. At 96 h post-challenge, AGP pigs had lower PUN(P = 0.02)and higher duodenal(P = 0.03), jejunal(P = 0.01) and ileal(P = 0.07) villus height than CC pigs. In addition, enzymes +yeast extract interacted additively and non-additively to reduce ileal IFN-γ(P 0.10) were observed between AGP and enzymes + yeast extract pigs on other measured parameters except for the downregulation of ileal IFN-γ(P &lt; 0.0001) and TNF-α(P = 0.003) in enzymes + yeast extract pigs at 96 h post-challenge.Conclusions: The LPS challenged piglets receiving enzymes + yeast extract showed beneficial responses in gut structure and immunity commensurate with those receiving antibiotics, though the latter had better overall growth performance. 展开更多
关键词 Antimicrobial growth promoter Feed enzymes Growth performance Immunity Nucleotides Piglets
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THE RELATIONSHIPS BETWEEN THE POLARIZING FORCE OF CATIONS AND THE ELECTROPHILIC CHARACTER AND CATALYTIC PERFORMANCES OF PROMOTED Pt-Al_2O_3 CATALYST
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作者 Jia LIU Xi Yao YANG Li PANG Department of Chemistry,Peking University,Beijing,100871 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第3期261-262,共2页
The electronic modification effect of various metal oxides over Pt-Al;O;catalyst andthe relationships between the polarizing force of cations(PFC)and the electrophiliccharacter(EC)and catalytic performances(CP)o... The electronic modification effect of various metal oxides over Pt-Al;O;catalyst andthe relationships between the polarizing force of cations(PFC)and the electrophiliccharacter(EC)and catalytic performances(CP)of promoted Pt catalyst have been studiecby competitive hydrogenation reaction method(CHRM)and test reaction,i.e.hydrogena-tion of benzene and hydrogenolysis of cyclopentane. 展开更多
关键词 Pt EC THE RELATIONSHIPS BETWEEN THE POLARIZING FORCE OF CATIONS AND THE ELECTROPHILIC CHARACTER AND CATALYTIC performanceS OF PROMOTED Pt-Al2O3 CATALYST Al
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To Actively Perform the Judicial Administration Function and Promote the Development of Cause of Human Rights
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作者 Xu Xinyan 《The Journal of Human Rights》 2016年第1期87-92,共6页
Respect for human rights and protection of human rights are significant rules in the Constitution of the People’s Republic of China.In 2015,judicial administration departments at all levels legally exercised their du... Respect for human rights and protection of human rights are significant rules in the Constitution of the People’s Republic of China.In 2015,judicial administration departments at all levels legally exercised their duties,implemented the principles and rules in constitution,and kept strengthening propagation of human rights through creation of contents and methods which had acquired great effects.What they have done contributes significantly toward the development of human rights in China. 展开更多
关键词 work To Actively Perform the Judicial Administration Function and Promote the Development of Cause of Human Rights
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Kinetically rate-determining step modulation by metal-support interactions for CO oxidation on Pt/CeO_(2)
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作者 Yanan Wang Chunlei Pei +1 位作者 Zhi-Jian Zhao Jinlong Gong 《Science China Chemistry》 SCIE EI CAS CSCD 2022年第10期2038-2044,共7页
Rational design and performance promotion are eternal topics and ultimate goals in catalyst preparation.In contrast,trial–and–error is still the common method people take.Therefore,it is important to develop methods... Rational design and performance promotion are eternal topics and ultimate goals in catalyst preparation.In contrast,trial–and–error is still the common method people take.Therefore,it is important to develop methods to intrinsically enhance the performance of catalysts.The most effective solutions are the one from a kinetic perspective based on clear knowledge of the reaction mechanism.This paper describes rate-determining step cognition and modulation to promote CO oxidation on highly dispersed Pt on CeO_(2).The different degrees of metal–support interactions due to variation of hydroxyl density of support could alter the structure of active species and the ability of oxygen activation apparently,further shift the rate-determining step from oxygen activation to oxygen reverse spillover kinetically.The transformation of rate-determining step could enhance the intrinsic activity significantly,and decrease the T_(50) approximately 140℃.The findings of this research exemplify the universal and effective method of performance elevation by rate-determining step modulation,which is promising for application in different systems. 展开更多
关键词 highly dispersed Pt/CeO_(2)catalysts single atom catalysis CO oxidation performance promotion rate-determining step modulation reaction kinetics
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