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Delaying Postpartum Supplementation in Cows Consuming Low-Quality Forage Does Not Alter Cow and Calf Productivity

Agricultural Sciences 2016年第9期7卷 642-649页

作者： j. travis mulliniks j.son E. Sawyer Richard C. Waterman Mark K. Petersen Department of Animal Science University of Tennessee Knoxville TN USA Department of Animal Science Texas A&M University College Station TX USA USDA-ARS Fort Keogh Livestock & Range Research Laboratory Miles City MT USA

Reducing the amount of supplemental feed postpartum without affecting productivity may enhance profitability of cow-calf operations. Therefore, sixteen 2-yr-old fall calving cows were used to evaluate effects of delaying postpartum supplementation on milk production, serum metabolites, and cow and calf BW change. Cows were stratified by calving date and randomly assigned to one of two treatments: 908 g/d of a 46% CP supplement beginning 5 d postpartum (Supp5, n = 7);or 908 g/d of the same supplement beginning 30 d postpartum (Supp30, n = 9). Supplements were formulated to provide 425 g/d of CP with 225 g coming from ruminally undegradable protein (RUP), and were fed twice weekly. Cows were daily fed 8.2 kg chopped sudangrass hay (5.5% CP, 74% NDF, OM basis) during lactation. Cows and calves were weighed before feeding on two consecutive days on d 0, d 30, and d 80 postpartum. Milk production and constituents were evaluated on d 90. Cow BW was not different at d 0 (P = 0.21) and 80 (P = 0.12) between treatment groups. Cows receiving supplement starting on d 5 postpartum were heavier (P = 0.04) than Supp30 cows on d 30. However, no differences (P ≥ 0.17) were found in BW change or ADG during the duration of the study. Milk production was similar (P = 0.99) for postpartum supplementation treatments. No differences (P ≥ 0.27) were observed in milk fat, lactose, protein, or solids-non-fat. However, there was a tendency (P = 0.09) for milk urea nitrogen to be greater for cows receiving supplement on d 5 than d 30 of lactation. Serum urea nitrogen was greater (P = 0.02) in cows receiving Supp5 than cows receiving Supp30. Serum non-esterified fatty acid (NEFA) and glucose concentrations were not different (P ≥ 0.40) between treatment groups. Calf BW and average daily gain (ADG) was not influenced (P ≥ 0.81) by timing of initial postpartum supplementation. These results indicate that withholding supplementation during the first 30 d postpartum may change pattern of cow BW lo

关键词： Beef Heifers Postpartum Supplementation

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Effect of Biochar Type and Size on<i>in Vitro </i>Rumen Fermentation of Orchard Grass Hay

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Agricultural Sciences 2017年第4期8卷 316-325页

作者： Zach D. McFarlane Phillip R. Myer Emily R. Cope Neil D. Evans T. Carson Bone Bryan E. Biss j. travis mulliniks Department of Animal Science University of Tennessee Knoxville TN USA Proton Power Lenoir City TN USA

Biochar, a byproduct from the biofuels industry, may be a potential feed additive in ruminant diets due to possible improvements in microbial fermentation. Therefore, the obj.ctive of this study was to determine the nutritive value, in vitro digestibility, volatile fatty acid (VFA) production, and gas production of biochar inclusion to an orchard grass (Dactylis glomerata) basal diet. The study was designed as a 3 × 2 factorial arrangement with 3 different biochar sources and 2 biochar processed sizes as the main effects factors. Experimental treatments were biochar from 3 different tree types: 1) Chestnut Oak (Quercus prinus L.;CO), 2) Yellow Poplar (Liriodendron tulipifera;YP), or 3) White Pine (Pinus strobus L.;WP), and processed at 2 different biochar particle sizes: a) 178 μm (Coarse). Biochar was added to the basal diet of orchard grass hay (872.35 g/kg of DM, 98.31 g/kg of CP, and 704.02 g/kg of aNDF, DM basis) at a rate of 81 g/kg DM. Biochar residual ash content was greater (P P P = 0.01) with lower aNDF content in both WP sizes compared with their respective biochar type and size. Gas production was not influenced (P = 0.23) by biochar tree type;however, gas production was increased (P = 0.05) by Fine particle size compared with Coarse biochar. The in vitro true digestibility (IVTD) of orchard grass hay was increased (P = 0.01) by the inclusion of Fine biochar particle size compared with Coarse particle size. Additionally, in vitro CP true digestibility (DCP) exhibited a type × size interaction (P = 0.01). Crude protein digestibility was lower for Fine particle-sized CO and WP biochar sources compared with Coarse particle-sized CO and WP (P ≤ 0.004). However, DCP was not different between Coarse and Fine particle-sized YP biochar (P = 0.70). Volatile fatty acids (acetate, propionate, and butyrate) were not altered by biochar type (P ≥ 0.66) or particle size (P ≥ 0.19). These results indicate that both tree type and particle size of biochar may need to be c

关键词： Biochar Forage Digestibility Gas Production Rumen Fermentation

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Autodesk inventor 11 essentials plus Daniel T. Banach, travis j. j.nes, Alan j. Kalamej.

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2006年

作者： Daniel T. Banach travis j. j.nes Alan j. Kalamej.

来源：畅想之星图书光盘版（南... 评论

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Highly active and durable Pd-Cu catalysts for oxygen reduction in alkaline exchange membrane fuel cells

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Frontiers in Energy 2017年第3期11卷 299-309页

作者： Xiong PENG travis j. OMASTA j.stin M. ROLLER William E. MUSTAIN Department of Chemical and Biomolecular Engineering University of Connecticut 191 Auditorium Drive Storrs CT 06269 USA

A Pd-Cu catalyst, with primary B2-type phase, supported by VulcanXC-7R carbon was synthesized via a solvothermal method. The catalysts were physically and electrochemically characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, trans- mission electron microscopy （TEM） and both cyclic and linear sweep voltammetry using a rotating disk electrode （RDE）. During the RDE testing, the half-wave potential of the Pd-Cu/Vulcan catalyst was 50 mV higher compared to that of commercial Pt/C catalyst for the oxygen reduction reaction （ORR） in alkaline media. The Pd-Cu/Vulcan exhibited a specific activity of 1.27 mA/cm2 and a mass activity of 0.59 A/mgpd at 0.9 V, which were 4 and 3 times greater than that of the commercial Pt/C catalyst, respectively. The Pd-Cu/Vulcan catalyst also showed higher in-situ alkaline exchange membrane fuel cell （AEMFC） performance, with operating power densities of 1100 MW/cm2 operating on H2/O2 and 700 MW/cm2 operating on H2/Air （CO2-free）, which were markedly higher than those of the commercial Pt/C. The Pd-Cu/ Vulcan catalyst also exhibited high stability during a short-term, in-situ AEMFC durability test, with only around 11% performance loss after 30 hours of operation, an improve- ment over most AEMFCs reported in the literature to date.

关键词： alkaline exchange membrane (AEM) fuel cell Pd-Cu oxygen reduction high performance water

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Digit amputation prosthetics

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Plastic and Aesthetic Research 2023年第1期10卷 229-235页

作者： travis j.Miller Department of Orthopedics and Sports Medicine University of WashingtonSeattleWA 98195USA

Digit amputations are the most common amputation *** manuscript describes the impairments imposed by digit loss and the potential benefits of digit *** review of the literature is designed to provide a reference for h... 详细信息

关键词： Hand surgery amputation prosthetics outcomes plastic surgery orthopedic surgery hand reconstruction

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Domestication-related changes in seed dispersal and pigmentation:Visual selection and functional trait?

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Molecular Plant 2023年第8期16卷 1240-1242页

作者： Petr Smykal travis Parker Department of Botany Palacky University in Olomouc77900 OlomoucCzech Republic Department of Plant Sciences University of CaliforniaDavisDavisCA 95616USA

The development of agriculture is one of the most transformative changes in the history of *** the most common changes occurring during plant domestication are reductions in seed dispersal and changes in *** there are archaeological records of these processes,the advancement of genomics offers a tool to achieve greater insight into the process of converting wild plants into crops(Smýkal et al.,2018).This involved and resulted in a set of specific phenotypic changes referred to collectively as the domestication ***,less obvious domestication-related modifications have also been identified,including changes in plant *** processes are often *** example,among visible changes,selection for visual appearance such as pigmentation is governed by modulation of specific metabolic *** genomic tools,the improvement of analytical methods provides the opportunity to reveal metabolomic changes involved in plant domestication.

关键词： Visual collective crops

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Mice with a heterozygous Lrp6 deletion have impaired fracture healing

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Bone Research 2016年第2期4卷 101-109页

作者： travis A Burgers j.an F Vivanco j.raj.zahatnansky Andrew j.Vander Moren j.mes j.Mason Bart O Williams Center for Cancer and Cell Biology Program for Skeletal Disease and Tumor Microenvironment Van Andel Research Institute Grand Rapids MhUSA Faculfad de Ingenieria y Ciencias Adolfo Ib6fiez University Vifia del Mar Chile padnos College of Engineering and Computing Grand Valley State University Grand Rapids MI USA

Bone fracture non-unions, the failure of a fracture to heal, occur in 10%-20% of fractures and are a costly and debilitating clinical problem. The Wnt/fl-catenin pathway is critical in bone development and fracture healing. Polymorphisms of linking low-density lipoprotein receptor-related protein 6 （LRP6）, a Wnt-binding receptor, have been associated with decreased bone mineral density and fragility fractures, although this remains controversial. Mice with a homozygous deletion of Lrp6 have severe skeletal abnormalities and are not viable, whereas mice with a heterozygous deletion have a combinatory effect with Lrp5 to decrease bone mineral density. As fracture healing closely models embryonic skeletal development, we investigated the process of fracture healing in mice heterozygous for Lrp6 （Lrp6~/-） and hypothesized that the heterozygous deletion of Lrp6 would impair fracture healing. Mid-diaphyseal femur fractures were induced in Lrp6~^- mice and wild-type controls （Lrp6~/~）. Fractures were analyzed using micro-computed tomography （~CT） scans, biomechanical testing, and histological analysis. Lrp6~/- mice had significantly decreased stiffness and strength at 28 days post fracture （PF） and significantly decreased BV/TV, total density, immature bone density, and mature area within the callus on day-14 and -21 PF; they had significantly increased empty callus area at days 14 and 21 PF. Our results demonstrate that the heterozygous deletion of Lrp6 impairs fracture healing, which suggests that Lrp6 has a role in fracture healing.

关键词： bone Mice with a heterozygous Lrp6 deletion have impaired fracture healing

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Perioperative visual loss after spine surgery

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World j.urnal of Orthopedics 2014年第2期5卷 100-106页

作者： travis j.Nickels Mariel R Manlapaz Ehab Farag Department of General Anesthesia Anesthesiology Institute Cleveland Clinc Cleveland OH 44195 United States

Perioperative visual loss(POVL) is an uncommon, but devastating complication that remains primarily associated with spine and cardiac surgery. The incidence and mechanisms of visual loss after surgery remain difficult to determine. According to the American Society of Anesthesiologists Postoperative Visual Loss Registry, the most common causes of POVL in spine procedures are the two different forms of ischemic optic neuropathy: anterior ischemic optic neuropathy and posterior ischemic optic neuropathy, accounting for 89% of the cases. Retinal ischemia, cortical blindness, and posterior reversible encephalopathy are also observed, but in a small minority of cases. A recent multicenter case control study has identified risk factors associated with ischemic optic neuropathy for patients undergoing prone spinal fusion surgery. These include obesity, male sex, Wilson frame use, longer anesthetic duration, greater estimated blood loss, and decreased percent colloid administration. These risk factors are thought to contribute to the elevation of venous pressure and interstitial edema, resulting in damage to the optic nerve by compression of the vessels that feed the optic nerve, venous infarction or direct mechanical compression. This review will expand on these findings as well as the recently updated American Society of Anesthesiologists practice advisory on POVL. There are no effectivetreatment options for POVL and the diagnosis is often irreversible, so efforts must focus on prevention and risk factor modification. The role of crystalloids versus colloids and the use of α-2 agonists to decrease intraocular pressure during prone spine surgery will also be discussed as a potential preventative strategy.

关键词： Perioperative visual loss Ischemic optic neuropathy Central retinal artery occlusion Cortical blindness Posterior reversible encephalopathy Spine surgery Prone positioning

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Sedentary Behavior Research Network members support new Canadian 24-Hour Movement Guideline recommendations

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j.urnal of Sport and Health Science 2020年第6期9卷 479-481页

作者： Mark S.Tremblay Scott Rollo travis j.Saunders Healthy Active Living and Obesity Research Group Children’s Hospital of Eastern Ontario Research InstituteOttawaONK1H 8L1Canada Department of Pediatrics Faculty of MedicineUniversity of OttawaOttawaONK1H 8M5Canada Department of Health Sciences Carleton UniversityOttawaONK1S 5B6Canada Department of Applied Human Sciences University of Prince Edward IslandCharlottetownPEIC1A 4P3Canada

A new paradigm employing 24-h movement guidelines that combines recommendations for movement behaviors across the whole day(physical activities of all intensities,sedentary behaviors,and sleep)is gaining momentum around the globe,and several j.risdictions are developing and releasing evidence-informed public health guidelines embracing this approach.1,2 The Sedentary Behavior Research Network(SBRN),the world’s largest network of researchers and health professionals focusing specifically on the health impact of sedentary behaviors,embraces this new paradigm and has worked to normalize the integration of sedentary behaviors into the movement-behavior paradigm.

关键词： movement den behavior

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A Role for GIBBERELLIN 2-OXIDASE6 and Gibberellins in Regulating Nectar Production

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Molecular Plant 2016年第5期9卷 753-756页

作者： Lisa B. Wiesen Ricci L. Bender travis Paradis Alexie Larson M. Ann D.N. Perera Basil j. Nikolau Neil E. Olszewski Clay j. Carter Department of Plant Biology University of Minnesota Saint PaulMN 55108 USA Department of Biochemistry Biophysics & Molecular Biology Iowa State University Ames IA 50011 USA W.M.Keck Metabolomics Research Laboratory Iowa State University Ames IA 50011 USA Department of Plant Biology University of Minnesota Twin Cities 1445 Gortner Avenue 250 Biological Sciences Center Saint Paul MN 55108 USA

Dear Editor The regulation of nectar production is dependent on hormonal signaling. For example, Arabidopsis PIN6, which encodes an auxin efflux transporter family protein, was identified as a nectary-enriched gene whose expression level was positively correlated to total nectar production （Bender et al., 2013）. Furthermore, j.smonic acid （j.） levels peak in Brassica flowers j.st prior to anthesis and promote nectar secretion （Radhika et al., 2010）. While auxin and j. have been demonstrated to play roles in the regulation of nectar production,

关键词： GIBBERELLIN genetics NECTARINE RESEARCH

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