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Book
Dynamique des élevages pastoraux et agropastoraux en Afrique intertropicale
Authors: --- --- --- ---
ISBN: 2759228959 2759228967 2759228940 Year: 2019 Publisher: éditions Quae

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Abstract

De 1974 à 2014, l’Afrique intertropicale a connu une croissance inédite des effectifs des herbivores domestiques. Les effectifs bovins ont été multipliés par plus de 2, ceux des petits ruminants par plus de 3. Aujourd’hui, la région regroupe environ 20 % des bovins et des ovins, 33 % des caprins et 81 % des dromadaires élevés sur la planète. Soit un cheptel de près de 900 millions de têtes. L’ouvrage est axé sur la dynamique des élevages des ruminants et des équidés en Afrique intertropicale. Il décrit les différents systèmes d’élevage rencontrés en zones aride et subhumide et les ressources alimentaires disponibles ; il aborde les impacts locaux et globaux des élevages des herbivores sur l’environnement. Le rôle socio-économique majeur des activités autour des animaux et de leurs produits, et la demande croissante en viande et lait des consommateurs sont soulignés. Une organisation efficace des filières bétail-viande est rapportée, alors que des contraintes à la mise en place d’une industrie laitière persistent. Pour de nombreuses familles vivant proches du seuil de pauvreté, l’élevage est un facteur de réduction de la vulnérabilité. Divers services qui permettraient un développement durable des élevages sont décrits. Cependant, les modes de financements et les suivis des impacts socio-économiques et environnementaux devront évoluer.


Book
Veterinary Microbiology & Parasitology
Author:
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Numerous pathogens affect animal health and wellbeing and production efficiency. These pathogens also have a considerable impact on social economics, food safety and security, and human health. Infectious diseases that originate from both domesticated animals and wildlife represent one of the greatest threats to human health. Recent studies show that domesticated species harbor approximately 84 times more zoonotic viruses than wild species. Eight of the top 10 mammalian species with the highest number of zoonotic viruses are domestic, such as pigs, cattle, and horses. Many animal parasites are also zoonotic, constituting an additional burden on human health. Furthermore, the rapid emergence and spread of drug-resistant pathogen strains pose new threats to animal and human health. Climate changes will undoubtedly alter the interactions between animals and between animals and humans, which will have a huge impact on the transmission rate of existing pathogens and the emergence of new pathogens or the reemergence of old pathogens. In this special collection, interactions of all major pathogen types, including viruses, bacteria, mites and flies, protozoans, and helminths, and their hosts, such as wild and companion animals and livestock species, are discussed. Further, anthelmintic activities of natural products are evaluated. The relevance and utility of cutting-edge tools, such as immunology, genomics and genetics, microbiome studies and metabolomics, and molecular epidemiology, in dissecting host-pathogen interactions are also discussed. This special collection provides a broad knowledge base that encourages dialogue across a wide distribution of the research community in veterinary microbiology and parasitology.

Keywords

dietary treatments --- plant bioactive compounds --- egg counts --- UHRMS --- Haemonchus contortus --- Crotalus ravus --- Crotalus triseriatus --- venom --- antibacterial activity --- Pseudomonas aeruginosa --- hemolytic activity --- maedi-visna virus --- ovine progressive pneumonia --- small ruminant lentivirus --- dairy sheep --- horse --- colic --- gastrointestinal disease --- Strongylus vulgaris --- Anoplocephala perfoliata --- cyathostominae --- D. gallinae --- hematophagous ectoparasite --- poultry red mite --- antibody titre --- lymphocyte subpopulation --- Sarcocystis spp. --- COX1 --- Camelus dromedarius --- post-mortem microbiology --- veterinary forensic pathology --- sudden death --- young dogs --- bovine digital dermatitis --- cattle lameness --- microbiome --- Treponema spp --- Ancylostoma ceylanicum --- community dogs --- ITS region --- cox1 --- Thailand --- population diversity --- Sarcoptes scabiei --- host-parasite interaction --- molecular characterization --- lipid profile --- antioxidant --- rodent --- helminth --- cestode --- trematode --- nematode --- Middle East --- meta-analysis --- Brugia pahangi --- Dirofilaria immitis --- PCR-RFLP --- spatial distribution --- altitude --- myiasis --- prevalence --- Oestrus ovis --- mtCOI --- sheep --- goats --- Saudi Arabia --- anoplocephala perfoliata --- equine --- gut microbiome --- volatile organic compounds (VOCs) --- omics integration --- tick-borne fever --- Anaplasma phagocytophilum-like 1 --- small ruminant


Book
Quantification and Mitigation Strategies to Reduce Greenhouse Gas Emissions from Livestock Production Systems
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Ruminants contribute significantly to human food security. However, the production of ruminants contributes to greenhouse gas (GHG) emissions that are responsible for climate change. GHGs such as methane, carbon dioxide, and nitrous oxide are produced from different processes of ruminant production. Ruminant enteric methane is a substantial component of methane produced by agriculture. This book presents novel and established methods in quantifying and reducing enteric methane emission from ruminants in different production systems. The book covers different types of ruminants including cattle, sheep, and goats. The chapters are contributed by scientists and authors from different parts of the world, demonstrating the importance of this problem and the universal drive for immediate and sustainable solutions. Although, biologically speaking, the production of enteric methane cannot be reduced to zero, high emissions are an indicator of inefficient digestion of feed in the rumen and low utilisation of feed energy. By presenting research that could lead to robust and yet practical quantification methods and mitigation strategies, this book not only contributes to the discourse and new knowledge on the magnitude of the problem but also brings forward potential solutions in different livestock production systems.


Book
Lignans
Author:
ISBN: 3038979090 3038979082 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Lignans are a class of natural products found mainly in plants. They have a wide variety of structures and exhibit a range of potent biological activities. Lignans are also well-known components of a number of widely eaten foods and are frequently studied for their dietary impact. Owing to these factors, lignans have been extensively studied by scientists from a large number of disciplines. This collection of research and review articles describes topics ranging in scope from the recent isolation and structural elucidation of new lignans, strategies towards the chemical synthesis of lignans, assessment of their biological activities and potential for further therapeutic development. Research showing the impact of lignans in the food and agricultural industries is also presented.

Keywords

taste-active compound --- heilaohu --- 9-norlignans --- antioxidant activity --- drug-like --- human health --- chemometrics --- lignan --- bitterness --- red-flowered Chinese magnolia vine --- antioxidant --- ruminant --- secoisolariciresinol diglucoside --- quantification --- intermolecular interactions --- cattle --- anti-inflammatory activity --- acyl-Claisen --- LOX --- seed --- food groups --- microtubules --- anti-proliferative --- acetylcholinesterase inhibitors --- flax --- arylnaphthalene lignan --- epiboly --- aryldihydronaphthalene lignan --- multiple bioactive components --- enterolignan --- total synthesis --- genetic --- synthesis --- cultivated --- cell cycle --- chronic diseases --- national databases --- oxidation --- chemical components --- molecular dynamics --- COX --- lignans --- hydroxycinnamic acid --- chemical structures --- Chinese magnolia vine --- stereoselective synthesis --- sPLA2 --- Bursera fagaroides --- in silico studies --- antibacterial activity --- semisynthesis --- dibenzyl butyrolactones --- flavonoid glycoside --- lignan glycoside --- chemical characterization --- hydroxymatairesinol --- podophyllotoxin --- Lespedeza cuneata --- Bursera --- oak ageing --- Schisandrae Chinensis Fructus --- F-actin --- cultivar --- UHPLC-MS/MS --- bioactivity --- podophyllotoxin-type lignans --- harmonized databases --- graph theory --- antioxidants --- health promotion --- simultaneous quantitation --- natural products --- dietary intake --- cell migration --- Lignan --- chemical space --- diet --- Lauraceae --- pharmacokinetic --- cytotoxicity --- tujia ethnomedicine --- flavonolignans --- flavonol --- adipocyte and osteoblast differentiation --- Burseraceae --- environment --- dietary lignans --- phytochemical analysis --- Schisandra chinensis --- animal health --- neolignans --- Schisandra rubriflora --- cancer --- norlignans --- wild


Book
In Vitro Digestibility in Animal Nutritional Studies
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This book addresses various aspects of in vitro digestibility: • Application of meta-analyses and machine learning methods to predict methane production; • Methane production of sainfoin and alfalfa; • In vitro evaluation of different dietary methane mitigation strategies; • Rumen methanogenesis, rumen fermentation, and microbial community response; • The role of condensed tannins in the in vitro rumen fermentation kinetics; • Fermentation pattern of several carbohydrate sources; • Additive, synergistic, or antagonistic effects of plant extracts; • In vitro rumen degradation and fermentation characteristics of silage and hay; • In vitro digestibility, in situ degradability, and rumen fermentation of camelina co-products; • Ruminal fermentation parameters and microbial matters to odd- and branched-chain fatty acids; • Comparison of fecal versus rumen inocula for the estimation of NDF digestibility; • Rumen inoculum collected from cows at slaughter or from a continuous fermenter; • Seaweeds as ingredients of ruminant diets; • Rumen in vitro fermentation and in situ degradation kinetics of forage Brassica crops; • In vitro digestibility and rumen degradability of vetch varieties; • Intestinal digestibility in vitro of Vicia sativa varieties; • Ruminal in vitro protein degradation and apparent digestibility of Pisum sativum; • In vitro digestibility studies using equine fecal inoculum; • Effects of gas production recording system and pig fecal inoculum volume on kinetics; • In vitro methods of assessing protein quality for poultry; and • In vitro techniques using the DaisyII incubator.

Keywords

polyethylene glycol --- gas production --- in vitro organic matter degradability --- condensed tannins --- ammonia --- volatile fatty acid --- in vitro assay --- common vetch --- grain --- nutritive value --- ruminants --- field peas --- ensiling --- hydro-thermic treatment --- nutrient digestibility --- rumen-undegraded protein --- Streptomyces griseus protease test --- n/a --- straw --- varietal effect --- corn distillers dried grains with solubles --- gas collection technique --- in vitro --- pig fecal inoculum --- soybean hulls --- rumen liquid --- in vitro fermentation --- rumen degradability --- seaweeds --- chemical composition --- in vitro rumen fermentation --- goats --- methane --- kale --- swede --- volatile fatty acids --- degradation rates --- NDF digestibility --- faecal inoculum --- diet composition --- fermentation parameters --- microbial populations --- microbial bases --- odd- and branched-chain fatty acids --- lactation stages --- beef cattle --- protein sources --- camelina co-products --- rumen microbial fermentation --- antimethanogenic --- chemical inhibition --- global warming --- halogenated compound --- macroalgae --- methane production --- methanogenic inhibitor --- plant inhibitory compound --- forage quality --- ruminant --- essential oils --- synergies --- cereals --- fibrous byproducts --- gas volume --- pH --- gas production technique --- in vitro digestibility --- Mitscherlich equation --- feedstuff evaluation --- fermentation kinetics --- substrate degradation --- nitrocompounds --- methanogenesis --- rumen fermentation --- microbial community --- coenzyme --- dietary protein --- poultry --- digestibility assay --- pH stat method --- pepsin digestibility assay --- fermentability --- grazing ecology --- microbial responses --- in vitro gas production --- rumen --- feed --- meta-analysis --- machine learning --- neural network --- inoculum --- rumen fluid --- faeces --- enzyme --- Ankom DaisyII incubator


Book
Bovine Viral Diarrhea Virus and Related Pestiviruses
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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The pestiviruses encompass some of the most economically important viral infections in the cattle, swine, and sheep industries worldwide. Discovered more than 70 years ago, bovine viral diarrhea virus (BVDV) and classical swine fever virus (CSFV) were long the main concern, but many new pestiviruses have emerged in recent years, which may also present additional threats to biosecurity and food safety. This issue brings together contributions from multiple disciplines – virology, immunology, veterinary clinical medicine, epidemiology, and pathology – on the subject of BVDV and related pestiviruses, and cover host–virus interactions, virus–cell interactions, cross-species transmission as well as the role of wildlife species as reservoirs of some of the pestiviruses.

Keywords

Linda virus --- serological profile --- virus neutralization assay --- virus pathogenicity --- humoral immune response --- pestivirus --- pig --- APPV --- phylogenetic analysis --- Italy --- bvdv --- epidemiology --- reindeer --- border disease virus --- Norway --- Pestivirus --- BVDV --- CD46 --- life cell imaging --- attachment --- surface transport --- experimental infection --- natural infection --- pigs --- bovine viral diarrhoea virus --- persistent testicular infection --- prolonged testicular infection --- bovine --- testes --- semen --- wild boar --- ML tree --- Clade --- Bungowannah virus --- pestivirus F --- ruminant infection --- foetus --- porcine --- real-time PCR --- serology --- virology --- bovine viral diarrhea virus --- cytopathic BVDV --- immunosuppression --- lymphocyte apoptosis --- monocyte-derived macrophages --- non-cytopathic BVDV --- Australia --- deer --- prevalence --- ruminants --- serosurveillance --- wildlife disease --- diarrhea --- bovine respiratory disease --- milk production --- somatic cells count (SCC) --- reproductive performance --- BVDV persistent infection --- fetus --- thymus --- immune response --- flavivirus --- reverse genetics --- single round infectious particle --- bovine viral diarrhea virus (BVDV) --- escape mutant --- ERNS --- adaptation --- CRISPR --- knockout --- MDBK --- cell entry --- pestiviruses --- congenital tremor type A-II --- persistent infection --- rangeland beef herds --- northern Australia --- atypical porcine pestivirus (APPV) --- viral persistence --- congenital tremor --- swine --- asymptomatic --- genomic sequence --- purifying selection --- bovine pestiviruses --- bovine viral diarrhoea --- vaccination --- control --- diagnosis --- antigenic cross-reactivity --- n/a

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