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https://www.readbyqxmd.com/read/28434189/changes-in-rumen-protozoal-community-by-condensed-tannin-fractions-of-different-molecular-weights-from-a-leucaena-leucocephala-hybrid-in-vitro
#1
Saminathan Mookiah, Han Ming Gan, Norhani Abdullah, Clemente Michael Vui Ling Wong, Suriya Kumari Ramiah, Hui Yin Tan, Chin Chin Sieo, Yin Wan Ho
AIMS: To evaluate the effects of condensed tannins (CTs) fractions of differing molecular weights (MWs) from a Leucaena leucocephala hybrid-Rendang (LLR) on the rumen protozoal community in vitro. METHODS AND RESULTS: The effects of unfractionated CTs (F0) and CT fractions of different MWs (F1 > F2 > F3 > F4 > F5) on protozoal population and community were evaluated in vitro using rumen microbes and ground guinea grass as the substrate. Higher-MW CT fractions F1 and F2 significantly (P < 0...
April 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28431319/response-of-plasma-glucagon-like-peptide-2-to-feeding-pattern-and-intraruminal-administration-of-volatile-fatty-acids-in-sheep
#2
M Elsabagh, Y Inabu, T Obitsu, T Sugino
Glucagon-like peptide-2 (GLP-2), a gut peptide secreted by enteroendocrine L cells, has recently been identified as a key regulator of intestinal growth and absorptive function in ruminants. However, reports on GLP-2 secretion are few, and more information regarding its secretion dynamics is needed. In this study, two experiments were conducted to elucidate the daily rhythm of GLP-2 secretion in response to feeding regimen and to investigate the effect of volatile fatty acids (VFA) on GLP-2 release in sheep...
March 11, 2017: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/28427254/supplementing-the-culture-of-rhodobacter-sphaeroides-in-the-diet-of-holstein-lactating-cow-may-naturally-produce-coenzyme-q10-enriched-milk
#3
Gui-Seck Bae, Ahreum Choi, Joon Mo Yeo, Jong Nam Kim, Jaeyong Song, Eun Joong Kim, Moon Baek Chang
Objective: To examine the effects of Rhaodobacter sphaeroides supplementation as a direct-fed microbial (DFM) on rumen fermentation in dairy cows and on CoQ10 transition into milk, an in vitro rumen simulation batch culture and an in vivo dairy cow experiments were conducted. Methods: The characteristics of in vitro ruminal fermentation were investigated using rumen fluids from six cannulated Holstein dairy cows at 2 h post-afternoon feeding. A control treatment was included in the experiments based on a typified total mixed ration (TMR) for lactating dairy cows, which was identical to the one used in the in vivo study, plus R...
April 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28425572/increased-propionate-concentration-in-lactobacillus-mucosae-fermented-wet-brewers-grains-and-during-in-vitro-rumen-fermentation
#4
Lovelia L Mamuad, Seon Ho Kim, Yeon Jae Choi, Alvin P Soriano, Kwang Keun Cho, Kichoon Lee, Gui Seck Bae, Sang Suk Lee
AIMS: This study was conducted to isolate and identify propionate-producing bacteria that can be used as an inoculum in improving wet brewers grains and rumen fermentation via increasing propionate concentration. METHODS AND RESULTS: A strain of Lactobacillus that exhibits high levels of propionate production was identified and characterized as Lactobacillus mucosae 521129 by 16S rRNA gene sequencing and phylogenetic analyses. Wet brewers grains were fermented through L...
April 20, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28425328/the-use-of-a-smartwatch-as-a-prompting-device-for-people-with-acquired-brain-injury-a-single-case-experimental-design-study
#5
Matthew Jamieson, Mattia Monastra, Graeme Gillies, Rumen Manolov, Breda Cullen, Marilyn McGee-Lennon, Stephen Brewster, Jonathan Evans
Prompting-based memory compensation is a potential application for smartwatches. This study investigated the usability and efficacy of a Moto360 smartwatch as a memory aid. Four community dwelling adults with memory difficulties following acquired brain injury (ABI) were included in an A-B-A single case experimental design study. Performance of everyday memory tasks was tested over six weeks with the smartwatch and software provided during weeks three and four. Participants were asked to use their usual memory aids and strategies during the control phases (weeks 1-2, 5-6)...
April 20, 2017: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/28423879/effects-of-various-weaning-times-on-growth-performance-rumen-fermentation-and-microbial-population-of-yellow-cattle-calves
#6
Huiling Mao, Yuefeng Xia, Yan Tu, Chong Wang, Qiyu Diao
Objective: This study was conducted to investigate the effects of weaning times on the growth performance, rumen fermentation and microbial communities of yellow cattle calves. Methods: Eighteen calves were assigned to a conventional management group that was normally weaned (NW, n = 3) or to early weaned (EW) group where calves were weaned when the feed intake of solid feed (starter) reached 500 g (EW500, n = 5), 750 g (EW750, n = 5), or 1000 g (EW1000, n = 5)...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28417371/analysis-of-complex-carbohydrate-composition-in-plant-cell-wall-using-fourier-transformed-mid-infrared-spectroscopy-ft-ir
#7
Ajay Badhan, Yuxi Wang, Tim A McAllister
Fourier transformed mid-infrared spectroscopy (FTIR) is a powerful tool for compositional analysis of plant cell walls (Acebes et al., Front Plant Sci 5:303, 2014; Badhan et al., Biotechnol Biofuels 7:1-15, 2014; Badhan et al., BioMed Res Int 2015: 562952, 2015; Roach et al., Plant Physiol 156:1351-1363, 2011). The infrared spectrum generates a fingerprint of a sample with absorption peaks corresponding to the frequency of vibrations between the bonds of the atoms making up the material. Here, we describe a method focused on the use of FTIR in combination with principal component analysis (PCA) to characterize the composition of the plant cell wall...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28412647/ecofriendly-lignocellulose-pretreatment-to-enhance-the-carboxylate-production-of-a-rumen-derived-microbial-consortium
#8
Adèle Lazuka, Cécile Roland, Abdellatif Barakat, Fabienne Guillon, Michael O'Donohue, Guillermina Hernandez-Raquet
Innovative dry chemo- and chemo-mechanical pretreatments form an interesting approach for modifying the native physico-chemical composition of lignocellulose facilitating its microbial conversion to carboxylates. Here, the impact of four dry-pretreatment conditions on the microbial transformation of wheat straw was assessed: milling to 2mm and 100µm, and NaOH chemical impregnation at high substrate concentrations combined with milling at 2mm and 100µm. Pretreatment effect was assessed in the light of substrate structure and composition, its impact on the acidogenic potential and the major enzyme activities of a rumen-derived microbial consortium RWS...
March 16, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28397627/influence-of-fumaric-acid-on-ruminal-parameters-and-organ-weights-of-growing-bulls-fed-with-grass-or-maize-silage
#9
N Remling, S Riede, U Meyer, A Beineke, G Breves, G Flachowsky, S Dänicke
The influence of the potential methane reducer, fumaric acid (FA), on ruminal parameters, the rumen wall and organ weights was investigated in a long-term study with growing bulls. In all, 20 bulls were fed with maize or grass silage as roughage, and with concentrate with or without 300 g FA per animal and day during the whole fattening period. After slaughtering, the organs were weighed and blood serum was analysed for glucose, β-hydroxybutyric acid (BHB) and non-esterified fatty acid concentration. The ruminal fluid was analysed for short-chain fatty acids, ammonia-N and the microbial community via single strand conformation polymorphism analysis...
April 11, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28395777/synthesis-of-a-novel-nitrogen-doped-carbon-dot-by-microwave-assisted-carbonization-method-and-its-applications-as-selective-probes-for-optical-ph-acidity-sensing-in-aqueous-nonaqueous-media-determination-of-nitrate-nitrite-and%C3%A2-optical-recognition-of-nox-gas
#10
Mohammad Mahdi Doroodmand, Mohsen Askari
A novel nitrogen-doped carbon dot (N-CD) was synthesized via carbonization of citric acid in the presence of triethylenetetramine as a nitrogen source. The average size of the N-doped CDs and also the quantum yield of the synthesized N-doped CDs were both estimated to be 9 ± 2 nm and 39.5%, respectively. The applications of the synthesized carbon nanostructure as a high quantum yield fluorescence probe were initially adopted in the fabrication of a novel optical pH (acidity) sensor in both aqueous and nonaqueous environments...
May 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28392309/rumen-microbial-and-fermentation-characteristics-are-affected-differently-by-acarbose-addition-during-two-nutritional-types-of-simulated-severe-subacute-ruminal-acidosis-in%C3%A2-vitro
#11
Yue Wang, Junhua Liu, Yuyang Yin, Weiyun Zhu, Shengyong Mao
Little information is available on whether or not the effect of an alpha-glucosidase inhibitor on the prevention of ruminal acidosis is influenced by the type of diet during ruminant feeding. This study was conducted to explore the effect of acarbose addition on the prevention of severe subacute ruminal acidosis induced by either cracked wheat or beet pulp in vitro. Cracked wheat and beet pulp were fermented in vitro by rumen microorganisms obtained from three dairy cows. When cracked wheat was used as the substrate and fermented for 24 h, compared with the control, acarbose addition decreased the concentrations of acetate, propionate, butyrate, total volatile fatty acids, and lactate (P < 0...
April 7, 2017: Anaerobe
https://www.readbyqxmd.com/read/28390728/between-cow-variation-in-digestion-and-rumen-fermentation-variables-associated-with-methane-production
#12
E H Cabezas-Garcia, S J Krizsan, K J Shingfield, P Huhtanen
A meta-analysis based on an individual-cow data set was conducted to investigate the effects of between-cow variation and related animal variables on predicted CH4 emissions from dairy cows. Data were taken from 40 change-over studies consisting of a total of 637 cow/period observations. Animal production and rumen fermentation characteristics were measured for 154 diets in 40 studies; diet digestibility was measured for 135 diets in 34 studies, and ruminal digestion kinetics was measured for 56 diets in 15 studies...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28390722/factors-influencing-ruminal-bacterial-community-diversity-and-composition-and-microbial-fibrolytic-enzyme-abundance-in-lactating-dairy-cows-with-a-focus-on-the-role-of-active-dry-yeast
#13
Ousama AlZahal, Fuyong Li, Le Luo Guan, Nicola D Walker, Brian W McBride
The objective of the current study was to employ a DNA-based sequencing technology to study the effect of active dry yeast (ADY) supplementation, diet type, and sample location within the rumen on rumen bacterial community diversity and composition, and to use an RNA-based method to study the effect of ADY supplementation on rumen microbial metabolism during high-grain feeding (HG). Our previous report demonstrated that the supplementation of lactating dairy cows with ADY attenuated the effect of subacute ruminal acidosis...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28390717/the-effects-of-heat-stress-on-protein-metabolism-in-lactating-holstein-cows
#14
S T Gao, J Guo, S Y Quan, X M Nan, M V Sanz Fernandez, L H Baumgard, D P Bu
Heat stress (HS) decreases milk protein synthesis beyond what would be expected based on the concomitant reduction in feed intake. The aim of the present study was to evaluate the direct effects of HS on milk protein production. Four multiparous, lactating Holstein cows (101 ± 10 d in milk, 574 ± 36 kg of body weight, 38 ± 2 kg of milk/d) were individually housed in environmental chambers and randomly allocated to 1 of 2 groups in a crossover design. The study was divided into 2 periods with 2 identical experimental phases (control phase and trial phase) within each period...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28390715/effects-of-feeding-extruded-linseed-on-production-performance-and-milk-fatty-acid-profile-in-dairy-cows-a-meta-analysis
#15
T Meignan, C Lechartier, G Chesneau, N Bareille
The objectives of this study were to quantify the effects on production performance and milk fatty acid (FA) profile of feeding dairy cows extruded linseed (EL), a feed rich in α-linolenic acid, and to assess the variability of the responses related to the dose of EL and the basal diet composition. This meta-analysis was carried out using only data from trials including a control diet without fat supplementation. The dependent variables were defined by the mean differences between values from EL-supplemented groups and values from control groups...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28390713/host-mediated-effects-of-phytonutrients-in-ruminants-a-review
#16
J Oh, E H Wall, D M Bravo, A N Hristov
Plants produce an extensive array of organic compounds derived from secondary metabolism that may be useful in animal nutrition because of their chemical makeup. These plant-derived bioactive compounds, also referred to as phytonutrients (PN) or phytobiotics, have been shown to express antimicrobial activities against a wide range of bacteria, yeast, and fungi and have been investigated as rumen modifiers in ruminant nutrition. Studies have reported that PN may inhibit deamination of AA and methanogenesis in the rumen and shift fermentation toward propionate and butyrate...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28385538/the-prevalence-and-development-of-digenean-parasites-within-their-intermediate-snail-host-galba-truncatula-in-a-geographic-area-where-the-presence-of-calicophoron-daubneyi-has-recently-been-confirmed
#17
Rhys Aled Jones, Hefin Wyn Williams, Sarah Dalesman, Ayodeji Sinmidele, Rowan K Thomas, Peter M Brophy
During the past decade, rumen fluke (Calicophoron daubneyi) has established as a prominent parasite of livestock within numerous European countries. Its development and spread is enabled by the presence of its intermediate snail host G. truncatula. However, the dynamics of this stage of the C. daubneyi lifecycle is yet to be recorded in numerous northern European countries including the UK. Here, the prevalence of C. daubneyi along with F. hepatica, H. cylindracea and other parasites infecting G. truncatula snails on 10 Welsh farms was recorded using morphological and PCR techniques...
March 27, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28382023/antiprotozoal-effect-of-saponins-in-the-rumen-can-be-enhanced-by-chemical-modifications-in-their-structure
#18
Eva Ramos-Morales, Gabriel de la Fuente, Stephane Duval, Christof Wehrli, Marc Bouillon, Martina Lahmann, David Preskett, Radek Braganca, Charles J Newbold
The antiprotozoal effect of saponins is transitory, as when saponins are deglycosylated to the sapogenin by rumen microorganisms they become inactive. We postulated that the substitution of the sugar moiety of the saponin with small polar residues would produce sapogen-like analogs which might be resistant to degradation in the rumen as they would not be enzymatically cleaved, allowing the antiprotozoal effect to persist over time. In this study, we used an acute assay based on the ability of protozoa to break down [(14)C] leucine-labeled Streptococcus bovis and a longer term assay based on protozoal motility over 24 h to evaluate both the antiprotozoal effect and the stability of this effect with fifteen hederagenin bis-esters esterified with two identical groups, and five cholesterol and cholic acid based derivatives carrying one to three succinate residues...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28380592/effects-of-the-interaction-of-forage-and-supplement-type-on-digestibility-and-ruminal-fermentation-in-beef-cattle
#19
M R Stierwalt, H M Blalock, T L Felix
The objectives of this research were to test interactions of supplement type, liquid versus dry, and forage type, hay versus corn stover, on digestibility and ruminal metabolism of beef cattle. Ruminally fistulated steers were fed in a replicated 4 × 4 Latin square with a 2 × 2 factorial arrangement of treatments: 1) hay with liquid supplement, 2) hay with dry supplement, 3) corn stover with liquid supplement, and 4) corn stover with dry supplement. The liquid supplement was molasses and glycerin based (23...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28380587/technical-note-evaluation-of-urinary-purine-derivatives-in-comparison-with-duodenal-purines-for-estimating-rumen-microbial-protein-supply-in-sheep
#20
G V Kozloski, C M Stefanello, L Oliveira, H M N Ribeiro Filho, T J Klopfenstein
A data set of individual observations was compiled from digestibility trials to examine the relationship between the duodenal purine bases (PB) flow and urinary purine derivatives (PD) excretion and the validity of different equations for estimating rumen microbial N (Nm) supply based on urinary PD in comparison with estimates based on duodenal PB. Trials (8 trials, = 185) were conducted with male sheep fitted with a duodenal T-type cannula, housed in metabolic cages, and fed forage alone or with supplements...
February 2017: Journal of Animal Science
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