检索结果-南通市图书馆

Different dietary starch patterns in lowprotein diets:effect on nitrogen efficiency,nutrient metabolism,and intestinal flora in growing pigs

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2022年第5期13卷 1557-1575页

作者： Junyan Zhou Lu Wang Lijie Yang Guangxin Yang Xiangfang Zeng Shiyan Qiao State Key Laboratory of Animal Nutrition China Agricultural UniversityBeijing 100193People’s Republic of China Beijing Bio-feed additives Key Laboratory Beijing 100193People’s Republic of China

Background:Protein releases amino acids faster than starch releases glucose in digestive tract of pigs fed lowprotein(LP)*** synchronization of dietary glucose and amino acids supply leads to compromised nitrogen *** starch patterns modulation may improve this ***:Growing barrows(29.7±2.0 kg)were randomly allotted into 5 dietary treatments with LP diets consisting of different purified *** included:waxy corn starch(W LP),corn starch+waxy corn starch(C+W LP),corn starch(C LP),pea starch+waxy corn starch(P+W LP)and pea starch(P LP).In the experiment,growth performance,protein deposition,nutrient metabolism,and fecal microbial community of pigs were *** vitro starch digestion was used for predicting the in vivo glucose ***:Dietary starch in vitro glucose release profile was determined by starch source and the ratio of amylopectin and amylose.C+W LP treatment showed decreased total nitrogen excretion and plasma citrulline concentration and improved plasma leptin concentration among treatments(Pnutrient metabolism,protein turnover,and fecal mi

关键词： Intestinal flora Low-protein diet Nitrogen efficiency nutrient metabolism Starch patterns

Identification of MBF2 family genes in Bombyx mori and their expression in different tissues and stages and in response to Bacillus bombysepticus infection and starvation

在线全文

学校读者我要写书评

暂无评论

Insect Science 2016年第4期23卷 502-512页

作者： Chun-Yan Zhou Xing-Fu Zha Chun Liu Min-Jin Han Li-Ying Zhang Pan-Pan Shi He Wang Ren-Wen Zheng Qing-You Xia State Key Laboratory of Silkworm Genome Biology Southwest University Chongqing China

The Multiprotein bridge factor 2 （MBF2） gene was first identified as a coactivator involved in BmFTZ-F 1-mediated activation of the Fushi tarazu gene. Herein, nine homologous genes of MBF2 gene are identified. Evolutionary analysis showed that this gene family is insect-specific and that the family members are closely related to response to pathogens （REPAT） genes. Tissue distribution analysis revealed that these genes could be expressed in a tissue-specific manner. Developmental profiles analysis showed that the MBF2 gene family members were highly expressed in the different stages. Analysis of the expression patterns of nine MBF2 family genes showed that Bacillus bombysepticus treatment induced the up-regulation of several MBF2 family genes, including MBF2-4, -7, -9, -8. Furthermore, we found the MBF2 family genes were modulated by starvation and the expression of these genes recovered upon re-feeding, except for MBF2-5, -9. These findings suggested roles for these proteins in insect defense against pathogens and nutrient metabolism, which has an important guiding significance for designing pest control strategies.

关键词： immunity nutrient metabolism physiology whole-genome scanning

The adaptive strategies of yaks to live in the Asian highlands

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Nutrition 2022年第2期9卷 249-258页

作者： Xiaoping Jing Luming Ding Jianwei Zhou Xiaodan Huang Allan Degen Ruijun Long State Key Laboratory of Grassland and Agro-Ecosystems International Centre for Tibetan Plateau Ecosystem ManagementCollege of EcologyLanzhou UniversityLanzhou 730000China State Key Laboratory of Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730020China School of Public Health Lanzhou UniversityLanzhou 730000China Desert Animal Adaptations and Husbandry Wyler Department of Dryland AgricultureBlaustein Institutes for Desert ResearchBen-Gurion University of NegevBeer Sheva 8410500Israel

The yak(Bos grunniens),an indigenous herbivore raised at altitudes between 3,000 and 5,000 m above sea level,is closely linked to more than 40 ethnic communities and plays a vital role in the ecological stability,livelihood security,socio-economic development,and ethnic cultural traditions in the Asian *** provide the highlanders with meat,milk,fibres,leather and dung(fuel).They are also used as pack animals to transport goods,for travel and ploughing,and are important in many religious and traditional *** Asian highlands are known for an extremely,harsh environment,namely low air temperature and oxygen content and high ultraviolet light and *** availability fluctuates greatly,with sparse pasture of poor quality over the long seven-month cold *** longterm natural and artificial selections,yaks have adapted excellently to the harsh conditions:1)by genomics,with positively selected genes involved in hypoxia response and energy metabolism;2)anatomically,including a short tongue with a weak sense of taste,and large lung and heart;3)physiologically,by insensitivity to hypoxic pulmonary vasoconstriction,maintaining foetal haemoglobin throughout life,and low heart rate and heat production in the cold season;4)behaviourlly,by efficient grazing and selecting forbs with high nutritional contents;5)by low nitrogen and energy requirements for maintenance and low methane emission and nitrogen excretion,namely,‘Low-Carbon’and‘Nitrogen-Saving’traits;6)by harboring unique rumen microbiota with a distinct maturation pattern,that has coevolved with host *** review aims to provide an overview of the comprehensive adaptive strategies of the yak to the severe conditions of the highlands.A better understanding of these strategies that yaks employ to adapt to the harsh environment could be used in improving their production,breeding and management,and gaining benefits in ecosystem service and a more resilient livelihood to climate chang

关键词： Yak Adaptive strategy Grazing behaviour nutrient metabolism Gastrointestinal microbiome

Identification of gut microbes associated with feed efficiency by daily-phase feeding strategy in growing-finishing pigs

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2023年第1期12卷 42-53页

作者： Qin Jiang Chunlin Xie Lingli Chen Hongli Xiao Zhilian Xie Xiaoyan Zhu Libao Ma Xianghua Yan State Key Laboratory of Agricultural Microbiology Hubei Hongshan LaboratoryFrontiers Science Center for Animal Breeding and Sustainable ProductionCollege of Animal Sciences and TechnologyHuazhong Agricultural UniversityWuhanHubei 430070China The Cooperative Innovation Center of Sustainable Pig Production WuhanHubei 430070China Hubei Provincial Engineering Laboratory for Pig Precision Feeding and Feed Safety Technology WuhanHubei 430070China

Feed efficiency is one of the most important issues for sustainable pig ***-phase feeding(DPF)is a form of precision feeding that could improve feed efficiency in *** microbiota can regulate host nutrient digestion,absorption,and ***,which key microbes may play a vital role in improving the feed efficiency during DPF remains *** the present study,we used a DPF program compared to a three-phase feeding(TPF)program in growing-finishing pigs to investigate the effects of gut microbiota on feed efficiency.A total of 204 Landrace×Yorkshire pigs(75 d)were randomly assigned into 2 *** treatment was replicated 8 times with 13 to 15 pigs per replicate *** in the TPF group were fed with a commercial feeding program that supplied fixed feed for phasesⅠ,Ⅱ,andⅢ,starting at 81,101,and 132 d of age,respectively,and pigs in the DPF group were fed a blend of adjacent phase feed from 81 to 155 d at a gradual daily ratio and phaseⅢfeed from 155 to 180 d of *** feed intake and body weight were recorded by a computerized device in the *** and blood samples were collected from 1 pig per replicate at 155 and 180 d of *** results showed that the DPF program remarkably improved the feed efficiency at 155 d(P<0.001)and 180 d of age(P<0.001),with a significant reduction of the intake of crude protein(P<0.01),net energy(P<0.001),crude fiber(P<0.001),ether extract(P<0.01),and ash(P<0.001).The daily-phase feeding program increased the abundance of Prevotella copri(P<0.05)and Paraprevotella clara(P<0.05),while it decreased the abundance of Ocilibacter(P<0.05)at 155 d of *** results of correlation analysis indicated that the differentially abundant microbiota communities were closely associated with 20 metabolites which enriched amino acid and phenylalanine *** results suggest that 2 key microbes may contribute to feed efficiency during daily-phase feeding strategies in pigs.

关键词： Daily-phase feeding Feed efficiency Gut microbiota nutrient metabolism Pig

石岐黄肉鸡前期日粮总含硫氨基酸和赖氨酸需要量的研究

在线全文

学校读者我要写书评

暂无评论

畜牧兽医学报 1997年第5期 +11-17页

石岐黄肉鸡前期日粮总含硫氨基酸和赖氨酸需要量的研究... 详细信息

石岐黄肉鸡前期日粮总含硫氨基酸和赖氨酸需要量的研究...

关键词： Cimaterol Swine Average daily gain Carcass composition nutrient metabolism