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Thematische Bibliographien / Sheep stable / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Sheep stable“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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1

Friend, M. A., and G. E. Robards. "Wool production and quality of three strains of Merino in a semi-arid environment under different grazing strategies." Australian Journal of Experimental Agriculture 46, no. 1 (2006): 37. http://dx.doi.org/10.1071/ea04018.

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Three strains of Merino wethers (strong, medium and fine wool; n = 30 each; 3 years old) were grazed under 3 different management regimes (10 from each strain) in a semi-arid environment to test the hypothesis that attempting to keep liveweight stable at upper and lower levels would improve staple strength relative to sheep in which no attempt was made to limit liveweight fluctuations, and that strength and wool colour would not differ between strains. Sheep in the low grazing regime were managed in an attempt to keep liveweight stable at a level below that of sheep in the high grazing regime,

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Vilarino, Marcela, Delia Alba Soto, Yanina Soledad Bogliotti, et al. "Derivation of sheep embryonic stem cells under optimized conditions." Reproduction 160, no. 5 (2020): 761–72. http://dx.doi.org/10.1530/rep-19-0606.

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Until recently, it has been difficult to derive and maintain stable embryonic stem cells lines from livestock species. Sheep ESCs with characteristics similar to those described for rodents and primates have not been produced. We report the derivation of sheep ESCs under a chemically defined culture system containing fibroblast growth factor 2 (FGF2) and a tankyrase/Wnt inhibitor (IWR1). We also show that several culture conditions used for stabilizing naïve and intermediate pluripotency states in humans and mice were unsuitable to maintain ovine pluripotency in vitro. Sheep ESCs display a smo

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3

Tran, Nam D., Christopher D. Porada, Graça Almeida-Porada, Hudson A. Glimp, W. French Anderson та Esmail D. Zanjani. "Induction of stable prenatal tolerance to β-galactosidase by in utero gene transfer into preimmune sheep fetuses". Blood 97, № 11 (2001): 3417–23. http://dx.doi.org/10.1182/blood.v97.11.3417.

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The successful transduction of hematopoietic stem cells and long-term (28 months) transgene expression within the hematopoietic system following the direct injection of high-titer retroviral vectors into preimmune fetal sheep was previously demonstrated. The present studies extended these analyses for 40 months postinjection and evaluated whether the longevity of transgene expression in this model system was the result of induction of prenatal tolerance to the transgene product. The intraperitoneal injection of retroviral vectors into preimmune sheep fetuses transduces thymic epithelial cells

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Piccione, Giuseppe, Claudia Giannetto, Stefania Casella, and Giovanni Caola. "Circadian Activity Rhythm in Sheep and Goats Housed in Stable Conditions." Folia Biologica 56, no. 3 (2008): 133–37. http://dx.doi.org/10.3409/fb.56_3-4.133-137.

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5

Martins, M. B., C. Ducatti, C. L. Martins, et al. "Stable isotopes for determining carbon turnover in sheep feces and blood." Livestock Science 149, no. 1-2 (2012): 137–42. http://dx.doi.org/10.1016/j.livsci.2012.07.004.

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6

Lira, Kariny Cavalcante de, José Carlos Batista Dubeux, Mário de Andrade Lira та ін. "Tracing sheep binary C3–C4 diet using stable isotope ratio (δ13C)". Italian Journal of Animal Science 20, № 1 (2021): 288–94. http://dx.doi.org/10.1080/1828051x.2021.1881413.

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7

Birhan, Getachew Bitew, Justin Manango W. Munganga, and Adamu Shitu Hassan. "Mathematical Modeling of Echinococcosis in Humans, Dogs, and Sheep." Journal of Applied Mathematics 2020 (November 1, 2020): 1–18. http://dx.doi.org/10.1155/2020/8482696.

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In this paper, a model for the transmission dynamics of cystic echinococcosis in the dog, sheep, and human populations is developed and analyzed. We first model and analyze the predator-prey interaction model in these populations; then, we propose a mathematical model of the transmission dynamics of cystic echinococcosis. We calculate the basic reproduction number R 0 and prove that the disease-free equilibrium is globally asymptotically stable, and hence, the disease dies out if R 0 > 1 . We further show that the endemic equilibrium is globally asymptotically stable, and hence, the disease

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Kitching, R. P., P. P. Bhat, and D. N. Black. "The characterization of African strains of capripoxvirus." Epidemiology and Infection 102, no. 2 (1989): 335–43. http://dx.doi.org/10.1017/s0950268800030016.

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SUMMARYIsolates of capripoxvirus collected from sub-Saharan Africa were compared in sheep, goats and cattle and by restriction endonuclease digestion of their purified DNA. Biochemical techniques were used to precisely identify strains of capripoxvirus for epidemiological investigations. Strains of capripoxvirus infecting cattle have remained very stable over a 30-year period and are closely related to strains recovered from sheep in Africa.

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De LANGE, M. M. A., B. SCHIMMER, P. VELLEMA, J. L. A. HAUTVAST, P. M. SCHNEEBERGER, and Y. T. H. P. VAN DUIJNHOVEN. "Coxiella burnetii seroprevalence and risk factors in sheep farmers and farm residents in The Netherlands." Epidemiology and Infection 142, no. 6 (2013): 1231–44. http://dx.doi.org/10.1017/s0950268813001726.

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SUMMARYIn this study, Coxiella burnetii seroprevalence was assessed for dairy and non-dairy sheep farm residents in The Netherlands for 2009–2010. Risk factors for seropositivity were identified for non-dairy sheep farm residents. Participants completed farm-based and individual questionnaires. In addition, participants were tested for IgG and IgM C. burnetii antibodies using immunofluorescent assay. Risk factors were identified by univariate, multivariate logistic regression, and multivariate multilevel analyses. In dairy and non-dairy sheep farm residents, seroprevalence was 66·7% and 51·3%,

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Hamzić Gregorčič, Staša, Doris Potočnik, Federica Camin, and Nives Ogrinc. "Milk Authentication: Stable Isotope Composition of Hydrogen and Oxygen in Milks and Their Constituents." Molecules 25, no. 17 (2020): 4000. http://dx.doi.org/10.3390/molecules25174000.

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This paper summarises the isotopic characteristics, i.e., oxygen and hydrogen isotopes, of Slovenian milk and its major constituents: water, casein, and lactose. In parallel, the stable oxygen isotope ratios of cow, sheep, and goat’s milk were compared. Oxygen stable isotope ratios in milk water show seasonal variability and are also 18O enriched in relation to animal drinking water. The δ18Owater values were higher in sheep and goat’s milk when compared to cow milk, reflecting the isotopic composition of drinking water source and the effect of differences in the animal’s thermoregulatory phys

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11

Balabanova, Tatyana Boryanova, and Mihaela Georgieva Ivanova. "Effect of stage of lactation on somatic cell count in sheep milk of Pleven Blackhead breed." Food Science and Applied Biotechnology 4, no. 1 (2021): 14. http://dx.doi.org/10.30721/fsab2021.v4.i1.124.

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Milk secretion in small ruminants present some particularities for cytoplasmatic particles which are shed in the milk together with leukocytes and epithelial cells. Therefore, a parameter like a somatic cell count is worldwide used as a measurement indicator of subclinical mastitis. The aim of the present study was to establish the change of chemical and microbiological characteristics on the composition of sheep milk, obtained from Pleven Blackhead sheep breed during different stages of lactation. It was established that the chemical characteristics of sheep milk varied widely according to th

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12

Yu, Yibo, Yun Wang, Liang Zhong, Hongjuan Zhu, and Jiapeng Qu. "Variations in Behavioral and Physiological Traits in Yearling Tibetan Sheep (Ovis aries)." Animals 11, no. 6 (2021): 1676. http://dx.doi.org/10.3390/ani11061676.

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Temperament is a consistent behavioral difference among individuals over time or in different contexts. A comprehensive understanding of temperament and complex behavioral interactions enhances knowledge on animal evolution, welfare, and productivity. However, reports on the development of behavioral consistency over ontogeny are vague. Here, we tested the ontogeny of the temperament and physiological traits of Tibetan sheep (Ovis aries) in three crucial age stages. The mean level of the risk-taking variable increased, while that of the vocalizations variable decreased. The exploration variabl

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13

Archer, Fabienne, Corinne Bachelin, Olivier Andreoletti, et al. "Cultured Peripheral Neuroglial Cells Are Highly Permissive to Sheep Prion Infection." Journal of Virology 78, no. 1 (2004): 482–90. http://dx.doi.org/10.1128/jvi.78.1.482-490.2004.

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ABSTRACT Transmissible spongiform encephalopathies arise as a consequence of infection of the central nervous system (CNS) by prions. Spreading of the infectious agent through the peripheral nervous system (PNS) may represent a crucial step toward CNS neuroinvasion, but the modalities of this process have yet to be clarified. Here we provide further evidence that PNS glial cells are likely targets for infection by prions. Glial cell clones originating from dorsal root ganglia of transgenic mice expressing ovine PrP (tgOv) and simian virus 40 T antigen were found to be readily infectible by she

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14

Witt, GB, EJ Moll, and RJS Beeton. "Sheep Faeces Under Shearing Sheds: a Documentary of Vegetation Change Using Stable Carbon Isotope Analysis." Rangeland Journal 19, no. 1 (1997): 109. http://dx.doi.org/10.1071/rj9970109.

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In this study we report on a new technique for reconstructing long-tgrm vegetation changes in the Australian rangelands. Sheep faeces, which accumulate annually beneath shearing sheds, provide an untapped and potentially continuous record of vegetation change at a property scale. From stable carbon isotope analysis, inferences about the available vegetation can be made. Our analysis revealed vegetation changes slnce the construction of two sheds, a period of approximately 40 years. Results indicated a significant reduction in the availability of C, grasses on Currawinya (south-west Queensland)

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15

Paterson, Adrienne C., Graham S. Baldwin, and Arthur Shulkes. "Metabolism of recombinant progastrin in sheep." American Journal of Physiology-Endocrinology and Metabolism 283, no. 3 (2002): E449—E456. http://dx.doi.org/10.1152/ajpendo.00042.2002.

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Precursor forms of peptide hormones may be biologically active with effects distinct from the mature end product. Nonamidated progastrin-derived peptides stimulate growth of colonic epithelium and are elevated in the circulation of patients with colorectal carcinomas, whereas the amidated end product is the major regulator of gastric acidity. Using region-specific radioimmunoassays, we here compared the in vitro and in vivo metabolism of recombinant human progastrin-(6–80) and two other nonamidated gastrins, gastrin-17-Gly and Tyr70-progastrin-(71–80). Although progastrin-(6–80) was very stabl

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16

Sproston, Emma L., Iain D. Ogden, Marion MacRae, et al. "Temporal Variation and Host Association in the Campylobacter Population in a Longitudinal Ruminant Farm Study." Applied and Environmental Microbiology 77, no. 18 (2011): 6579–86. http://dx.doi.org/10.1128/aem.00428-11.

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ABSTRACTCampylobacter jejuniandC. coliwere quantified and typed, using multilocus sequence typing (MLST), from fecal samples collected from a mixed cattle and sheep farm during summer. Cattle had a significantly higher prevalence than sheep (21.9% [74/338] and 14.0% [30/214], respectively), but both decreased over time. There were no differences in the averageCampylobacterconcentrations shed by cattle (600 CFU g−1) and sheep (820 CFU g−1), although sheep did show a significant temporal reduction in the number ofCampylobacterorganisms shed in their feces. A total of 21 different sequence types

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17

Bazzy, A. R., and D. F. Donnelly. "Diaphragmatic failure during loaded breathing: role of neuromuscular transmission." Journal of Applied Physiology 74, no. 4 (1993): 1679–83. http://dx.doi.org/10.1152/jappl.1993.74.4.1679.

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To determine whether central or peripheral mechanisms are responsible for diaphragmatic failure during loaded breathing, phrenic nerve activity (iENG), diaphragm muscle electromyogram (iEMG), and transdiaphragmatic pressure (Pdi) were measured in unanesthetized chronically instrumented sheep during inspiratory flow-resistive (IFR) loaded breathing. After placement of the IFR load, Pdi increased initially and remained relatively stable for 10–30 min [Pdi = 69.9 +/- 6.3 (SE) cmH2O, n = 6]; arterial PCO2 also increased from baseline (35.8 +/- 0.9 Torr) to 55.1 +/- 4.7 Torr. During IFR loading, iE

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18

Scheidweiler, Karl B., Jalil Shojaie, Mark A. Plessinger, Ronald W. Wood, and Tai C. Kwong. "Stability of Methylecgonidine and Ecgonidine in Sheep Plasma in Vitro." Clinical Chemistry 46, no. 11 (2000): 1787–95. http://dx.doi.org/10.1093/clinchem/46.11.1787.

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Abstract Background: Crack smokers are exposed to a pyrolysis product, methylecgonidine (MEG), which can be used as an analytical marker for crack smoking. Ecgonidine (EC), a hydrolytic product of MEG, has been identified in urine of crack smokers. MEG undergoes conversion to EC, complicating analysis and perhaps explaining a lack of forensic blood specimens containing MEG. Methods: We developed gas chromatography–mass spectrometry (GC-MS) assays for MEG and EC. Plasma was collected from sheep blood containing 0, 0.06, or 0.24 mol/L (0%, 0.25%, or 1%) NaF. MEG was added to these plasmas, and t

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19

Mandapati, Ravi, Allan Skanes, Jay Chen, Omer Berenfeld, and José Jalife. "Stable Microreentrant Sources as a Mechanism of Atrial Fibrillation in the Isolated Sheep Heart." Circulation 101, no. 2 (2000): 194–99. http://dx.doi.org/10.1161/01.cir.101.2.194.

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20

Pearson, Jessica, and Matt Grove. "Counting sheep: sample size and statistical inference in stable isotope analysis and palaeodietary reconstruction." World Archaeology 45, no. 3 (2013): 373–87. http://dx.doi.org/10.1080/00438243.2013.820646.

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21

Coil, David A., John H. Strickler, Sharath K. Rai, and A. Dusty Miller. "Jaagsiekte Sheep Retrovirus Env Protein Stabilizes Retrovirus Vectors against Inactivation by Lung Surfactant, Centrifugation, and Freeze-Thaw Cycling." Journal of Virology 75, no. 18 (2001): 8864–67. http://dx.doi.org/10.1128/jvi.75.18.8864-8867.2001.

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ABSTRACT Jaagsiekte sheep retrovirus (JSRV) replicates in the lungs of sheep and causes the secretion of copious lung fluid containing the virus. Adaptation of JSRV to infection and replication in the lung and its apparent resistance to the denaturing activity of lung fluid suggest that vectors based on JSRV would be useful for gene therapy targeted to the lung. We show here that a retrovirus vector bearing the JSRV Env is stable during treatment with lung surfactant while an otherwise identical vector bearing an amphotropic Env is inactivated. Furthermore, the JSRV vector was stable during ce

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22

Topczewska, Jadwiga, and Anna Rogowska. "Assessment of housing conditions in selected horse stables." Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego 13, no. 4 (2017): 67–75. http://dx.doi.org/10.5604/01.3001.0013.5204.

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The objective of the study was to assess housing conditions for horses. Both new and adapted stables were selected for the study. Measurements of the buildings were made, the area of the boxes was calculated, and the equipment was evaluated. The microclimate of the stables was evaluated by means of direct measurements in the boxes and in the corridors in six replications, at 7 am, 2 pm and 7 pm, taking into account the season of the year. The temperature, relative humidity and air speed were measured with a Kastrel 3000 anemometer, and light intensity with a TES-1335 light meter. The concentra

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Ling, W. D., D. P. Brooks, J. T. Crofton, L. Share, and D. F. Bohr. "Pressor responses to vasopressin in pigs and sheep with DOCA hypertension." American Journal of Physiology-Heart and Circulatory Physiology 256, no. 1 (1989): H101—H104. http://dx.doi.org/10.1152/ajpheart.1989.256.1.h101.

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Pressor responses to vasopressin were determined in pigs and sheep during three experimental periods: 1) before deoxycorticosterone acetate (DOCA) treatment, 2) 21 days after DOCA implantation (100 mg/kg) when a stable hypertension had developed, and 3) after reversal of the hypertension by removing the implant in the sheep or by decreasing the dietary sodium intake in the pigs. The infusion of lysine (LVP) or arginine (AVP) vasopressin into pigs and sheep, respectively, resulted in dose-dependent increases in plasma vasopressin concentration. The levels of plasma LVP or AVP achieved by these

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Sumer, Huseyin, Jun Liu, Luis Malaver Ortega, and Paul J. Verma. "INDUCING PLURIPOTENCY IN RUMINANTS." Reproduction, Fertility and Development 24, no. 1 (2012): 285. http://dx.doi.org/10.1071/rdv24n1ab245.

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The generation of ES cell lines in ruminants, including cattle and sheep, has been inefficient with putative ESCs undergoing rapid spontaneous differentiation. Recently direct reprogramming of rodent and primate somatic cells to induced Pluripotent Stem Cells (iPSC) is possible simply by forcing expression of a handful of transcription factors, typically OCT3/4, SOX2, KLF4 and cMYC (OSKM). Using a similar approach we have identified that addition of NANOG to the reprogramming cocktail was essential for the generation of stable bovine induced pluripotent stem cells (biPSC). Conversely, generati

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Hobson, Keith A., Mark L. Gloutney, and H. Lisle Gibbs. "Preservation of blood and tissue samples for stable-carbon and stable-nitrogen isotope analysis." Canadian Journal of Zoology 75, no. 10 (1997): 1720–23. http://dx.doi.org/10.1139/z97-799.

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Researchers engaged in collecting animal material for stable-carbon and stable-nitrogen isotope analysis are frequently faced with the need to preserve tissues prior to transportation to the laboratory. In many cases, freezing is not possible in the field, so we investigated the potential of several techniques for preserving tissues for this purpose. We also included preservation techniques used for DNA analyses in order to evaluate how they might alter δ13C and δ15N values in tissues and, ultimately, whether archived DNA samples could be used for stable-isotope assay. Tissues included blood a

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González, Lorenzo, Francesca Chianini, Nora Hunter, et al. "Stability of murine scrapie strain 87V after passage in sheep and comparison with the CH1641 ovine strain." Journal of General Virology 96, no. 12 (2015): 3703–14. http://dx.doi.org/10.1099/jgv.0.000305.

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Breed- and prion protein (PRNP) genotype-related disease phenotype variability has been observed in sheep infected with the 87V murine scrapie strain. Therefore, the stability of this strain was tested by inoculating sheep-derived 87V brain material back into VM mice. As some sheep-adapted 87V disease phenotypes were reminiscent of CH1641 scrapie, transgenic mice (Tg338) expressing ovine prion protein (PrP) were inoculated with the same sheep-derived 87V sources and with CH1641. Although at first passage in VM mice the sheep-derived 87V sources showed some divergence from the murine 87V contro

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Mason, J., M. Lamand, J. C. Tressol, and G. Mulryan. "Studies of the changes in systemic copper metabolism and excretion produced by the intravenous administration of trithiomolybdate in sheep." British Journal of Nutrition 59, no. 2 (1988): 289–300. http://dx.doi.org/10.1079/bjn19880036.

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1. The effects of intravenous trithiomolybdate administration on the fate of 64Cu and on stable Cu metabolism were examined in sheep held in metabolism cages and fed on a low-Cu diet supplying 2·95 mg Cu/animal per d.2. In Expt 1 the injection of trithiomolybdate, 30 mg molybdenum/sheep per d for 5 d, greatly increased plasma Cu levels and more than doubled the faecal Cu excretion. Urinary Cu excretion was unaffected. The disappearance from plasma of 64Cu injected during the trithiomolybdate administration was slowed although faecal 64Cu excretion was increased more than threefold.3. In Expt 2

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Miao, Darryl C., Sithembiso C. Velaphi, Timothy Roy, Kevin DeSpain, and Charles R. Rosenfeld. "Metabolism and synthesis of arginine vasopressin in conscious newborn sheep." American Journal of Physiology-Endocrinology and Metabolism 295, no. 3 (2008): E672—E677. http://dx.doi.org/10.1152/ajpendo.90441.2008.

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Arginine vasopressin (AVP) is an important regulator of cardiovascular homeostasis in the fetus, but its role after birth is unclear. Although infused AVP increases mean arterial pressure (MAP) during the 1st mo after birth, pressor responses are unchanged, suggesting that vascular responsiveness is also unchanged. Alternatively, this could reflect increases in AVP metabolic clearance rate (MCRAVP). However, newborn AVP metabolism and synthesis are poorly studied. Therefore, we examined the pressor responses to infused AVP and the pattern of circulating AVP, AVP production rate (PRAVP), and MC

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Zhang, Yufei, Jing Shi, and Shuying Liu. "Establishment and Characterization of a Telomerase-Immortalized Sheep Trophoblast Cell Line." BioMed Research International 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/5808575.

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The primary sheep trophoblast cells (STCs) have a finite lifespan in culture. This feature limits the scope for long-termin vitrostudies with STCs. This study was an attempt to establish and characterize a telomerase-immortalized sheep trophoblast cell line. STCs were isolated and purified by using Percoll and specific immunoaffinity purification, respectively. The purified STCs were transfected with a plasmid carrying sequences of human telomerase reverse transcriptase (hTERT) to create immortalized sheep trophoblast cell line (hTERT-STCs). hTERT-STCs showed a stable expression of hTERT gene,

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Strampe, Malte, Marcus Stoffel, Dieter Weichert, Richard Martin Sellei, and Hans-Christoph Pape. "Study of the biomechanical behaviour of structurally stable/unstable motion segments of the sheep spine." PAMM 12, no. 1 (2012): 97–98. http://dx.doi.org/10.1002/pamm.201210040.

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Keevallik, Leelo. "Sequence Initiation or Self-Talk? Commenting on the Surroundings While Mucking out a Sheep Stable." Research on Language and Social Interaction 51, no. 3 (2018): 313–28. http://dx.doi.org/10.1080/08351813.2018.1485233.

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Couldrey, C., R. Brauning, H. V. Henderson, and J. C. McEwan. "Genome-wide DNA methylation analysis: no evidence for stable hemimethylation in the sheep muscle genome." Animal Genetics 46, no. 2 (2015): 185–89. http://dx.doi.org/10.1111/age.12268.

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Balasse, Marie, and Stanley H. Ambrose. "Distinguishing sheep and goats using dental morphology and stable carbon isotopes in C4 grassland environments." Journal of Archaeological Science 32, no. 5 (2005): 691–702. http://dx.doi.org/10.1016/j.jas.2004.11.013.

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Huang, Yifei, Stephen N. Hunyor, Lele Jiang, et al. "Remodeling of the chronic severely failing ischemic sheep heart after coronary microembolization: functional, energetic, structural, and cellular responses." American Journal of Physiology-Heart and Circulatory Physiology 286, no. 6 (2004): H2141—H2150. http://dx.doi.org/10.1152/ajpheart.00829.2003.

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The mandatory use of pharmacotherapy in human heart failure (HF) impedes further study of natural history and remodeling mechanisms. We created a sheep model of chronic, severe, ischemic HF [left ventricular (LV) ejection fraction (LVEF) <35% stable over 4 wk] by selective coronary microembolization under general anesthesia and followed hemodynamic, energetic, neurohumoral, structural, and cellular responses over 6 mo. Thirty-eight sheep were induced into HF (58% success), with 23 sheep followed for 6 mo (21 sheep with sufficient data for analysis) after the LVEF stabilized (median of 3 emb

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Akens, M. K., D. Nadler, P. Bittmann, et al. "Mosaicplasty with photooxidized, mushroom shaped, bovine, osteochondral xenografts in experimental sheep." Veterinary and Comparative Orthopaedics and Traumatology 19, no. 03 (2006): 147–56. http://dx.doi.org/10.1055/s-0038-1632991.

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SummaryThe goal was to study the performance of mushroom shaped, photooxidized, osteochondral grafts in mosaicplasty focusing on graft stability and survival. Mushroom shaped, photooxidized grafts (6 mm for the cartilaginous head of the mushroom, 3 mm for the stem) were implanted in the medial femoral condyle of 10 sheep. Four transplants were inserted per condyle in an overlapping fashion using the pressfit technique (n=40 grafts in 10 condyles). The grafts were followed for 6 and 12 months. Semi-quantitative evaluation of graft performance was performed using a validated score system. All gr

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Hoffman, Louwrens, and Sara Erasmus. "Provenance in Sheep: The Karoo Lamb Story." Proceedings 36, no. 1 (2020): 188. http://dx.doi.org/10.3390/proceedings2019036188.

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Noted for its unique herbaceous flavour which is imbued from a diet of indigenous fragrant plants, Karoo lamb is marketed as one of South Africa’s finest meat products and enjoys Protected Geographical Indication (PGI) status in South Africa and the European Union. Its distinct quality is imparted through natural grazing of the sheep on the Karoo veld that has a significant influence on the sensory and chemical profile of the meat. Descriptive sensory analysis, fatty acid analysis, solid-phase microextraction, isotope ratio mass spectrometry, portable near-infrared reflectance spectroscopy and

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Bazzy, A. R., L. M. Pang, S. R. Akabas, and G. G. Haddad. "O2 metabolism of the sheep diaphragm during flow resistive loaded breathing." Journal of Applied Physiology 66, no. 5 (1989): 2305–11. http://dx.doi.org/10.1152/jappl.1989.66.5.2305.

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To determine whether O2 availability limited diaphragmatic performance, we subjected unanesthetized sheep to severe (n = 11) and moderate (n = 3) inspiratory flow resistive loads and studied the phrenic venous effluent. We measured transdiaphragmatic pressure (Pdi), systemic arterial and phrenic venous blood gas tensions, and lactate and pyruvate concentrations. In four sheep with severe loads, we measured O2 saturation (SO2), O2 content, and hemoglobin. We found that with severe loads Pdi increased to 74.7 +/- 6.0 cmH2O by 40 min of loading, remained stable for 20–30 more min, then slowly dec

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Jarmuji, Jarmuji. "Kurva Laktasi Induk Domba Jonggol (Domba Ekor Tipis) Berdasarkan Umur Induk yang Dipelihara dengan Sistem Penggembalaan Grazing System." Jurnal Sain Peternakan Indonesia 9, no. 1 (2014): 51–59. http://dx.doi.org/10.31186/jspi.id.9.1.51-59.

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ABSTRACTThe objectives of this research were to know the effect of ewe’s age on curve of milk yield reared on grazing. This research was done in The Jonggol Animal Science Teaching, and Research Unit (JASTRU) located in Singasari Village, Jonggol, Bogor district. As many 100 local sheep comprises of pregnant and lactating ewes on average 1-4 years old were used in this research. The sheeps were grazed from 9 a.m. to 4 p.m. and housed on night. The result showed that ewe’s age different effect its of curve milk yield. Lactation peak is expected within 1-2 weeks of lambing, followed by a decreas

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Oliva, Gabriel, Daniela Ferrante, Silvina Puig, and Marcos Williams. "Sustainable sheep management using continuous grazing and variable stocking rates in Patagonia: a case study." Rangeland Journal 34, no. 3 (2012): 285. http://dx.doi.org/10.1071/rj12016.

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Adaptive rangeland management based on continuous grazing by sheep was implemented at Los Pozos station, on the Magellan tussock steppes of southern Patagonia, between 1990 and 2010. The numbers of sheep were adjusted annually following a stocking strategy tracking the herbage mass. Herbage mass was assessed by harvesting short grass species at peak herbage mass and grazing capacity was estimated based on sheep requirements. Historic production records under a traditional continuous grazing management (1930–89) were contrasted with those of the adaptive management period (1990–2010). Stocking

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DYUSEGALIYE, MUKHIT, UTENBERGEN BISENOV, AYMAN NURGALIYEVA, and ELMIRA ADIETOVA. "Index selection of Kazakh karakul sur-type sheep with platinum shades." Medycyna Weterynaryjna 77, no. 01 (2021): 6492–2021. http://dx.doi.org/10.21521/mw.6492.

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Aim of the study: Karakul sheep farming is one of the effective subsectors of animal breeding in the southwestern region of Kazakhstan. Sheep coloring is a result of genetic factors. Breeding can provide farmers with offspring of the desired color through the selection of parental couples. Materials: This research introduces an index method for breeding sur-type sheep with the proportion of underfur fibers under 25%. Such a proportion of underfur fibers provides a 15.25% deeper color within the breed at the 25.3% higher chance of getting platinum shades. Methods: Platinum coloring in sheep mak

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Ioffe, S., A. H. Jansen, and V. Chernick. "Analysis of respiratory neuronal activity in fetal sheep." Journal of Applied Physiology 73, no. 5 (1992): 1972–81. http://dx.doi.org/10.1152/jappl.1992.73.5.1972.

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We developed a new method to monitor fetal medullary respiratory neurons utilizing a two-stage approach. At 129–133 days of gestation, sheep were anesthetized, and a window was placed over the area of the fourth ventricle. After a recovery period of 3–5 days, the fetus was exteriorized into a saline bath under maternal spinal anesthesia, and the head was connected rigidly to a stereotaxic frame. Microelectrodes were inserted into the area of the nucleus tractus solitarius during rapid-eye-movement sleep, and extracellular recordings of 223 respiratory neurons were analyzed: 76% were inspirator

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Balcaen, A., E. Claeys, V. Fievez, P. Boeckx, O. van Cleemput, and S. de Smet. "Stable carbon isotope analysis of faecal and blood samples of sheep in relation to the diet." Proceedings of the British Society of Animal Science 2003 (2003): 159. http://dx.doi.org/10.1017/s1752756200013181.

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Stable isotopes have been extraordinarily helpful in understanding animal migration, diet, food webs and nutrient flow (Hilderbrand et al., 1996), based on the property that C3 and C4 plants possess distinctly different 13C/12C ratios (δ13C value) due to isotopic fractionation during photosynthetic carbon fixation (Smith & Epstein, 1971). Most woody species and temperate graminoids assimilate carbon via the Calvin cycle (C3), which discriminates stronger against the heavier isotope (13C) than Hatch-Slack (C4) species (tropical and subtropical graminoids and some shrubs). C3 and C4 plant sp

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Tomczyk, J., H. Wierzbowski, and M. Zalewska. "Stable Isotope Record of Human and Sheep Enamel Carbonate from the Ancient Middle Euphrates Valley (Syria)." International Journal of Osteoarchaeology 26, no. 4 (2015): 599–609. http://dx.doi.org/10.1002/oa.2449.

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Carver, Andrew S., Michael A. Dalrymple, Gordon Wright, et al. "Transgenic Livestock as Bioreactors: Stable Expression of Human Alpha-1-Antitrypsin by a Flock of Sheep." Nature Biotechnology 11, no. 11 (1993): 1263–70. http://dx.doi.org/10.1038/nbt1193-1263.

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Meijer, D. W., and P. J. Klopper. "Construction of a stable nipple valve with processed dermal sheep collagen for continent ileostomy and urostomy." Urological Research 18, no. 5 (1990): 353–55. http://dx.doi.org/10.1007/bf00300787.

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Sano, H., T. Fujita, M. Murakami, and A. Shiga. "Stimulative effect of epinephrine on glucose production and utilization rates in sheep using a stable isotope." Domestic Animal Endocrinology 13, no. 5 (1996): 445–51. http://dx.doi.org/10.1016/0739-7240(96)00074-4.

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McGregor, B. A. "Influence of stocking rate and mixed grazing of Angora goats and Merino sheep on animal and pasture production in southern Australia. 1. Botanical composition, sward characteristics and availability of components of annual temperate pastures." Animal Production Science 50, no. 2 (2010): 138. http://dx.doi.org/10.1071/an09128.

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The effects of animal species (AS; Angora goats, Merino sheep or goats and sheep mixed grazed together at ratio 1 : 1) and stocking rate (SR; 7.5, 10 and 12.5 animals/ha) on the availability, botanical composition and sward characteristics of annual temperate pastures under continuous grazing were determined in a replicated experiment from 1981 to 1984. AS and SR had significant effects on pasture availability and composition and many AS × SR interactions were detected. The pastures grazed by sheep had significantly reduced content and proportion of subterranean clover and more undesirable gra

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Caola, Giovanni, Stefania Casella, Claudia Giannetto, and Giuseppe Piccione. "Daily locomotor activity in five domestic animals." Animal Biology 60, no. 1 (2010): 15–24. http://dx.doi.org/10.1163/157075610x12610595764057.

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AbstractThe aim of this study was to compare locomotor activity in five domestic animals. Five female Comisana sheep, five female Maltese goats, five female Bruna cows, and five female Thoroughbred horses were housed separately in a soundproof box equipped with an airflow system and five female Blue Vienna rabbits were individually housed in metallic cages. Animals were kept under a 12/12 Light/Dark cycle and indoor ambient temperature (16-20°C). To record activity, an Actiwatch-Mini® was placed on each animal by means of a collar. Analysis by the cosinor procedure indicated a daily rhythm of

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Ranilla, M. J., S. López, F. J. Giráldez, C. Valdés, and M. D. Carro. "Comparative digestibility and digesta flow kinetics in two breeds of sheep." Animal Science 66, no. 2 (1998): 389–96. http://dx.doi.org/10.1017/s1357729800009528.

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AbstractA study was conducted to compare apparent digestibility and digesta flow kinetics in the whole digestive tract in two breeds of sheep (Churra and Merino) offered alfalfa hay at about maintenance. Ten mature sheep (five Churra and five Merino) each fitted with a rumen cannula were used in the study. Apparent digestibility was determined by total faecal collection. Liquid (Co-EDTA) and solid (Cr-mordanted fibre) markers were used to estimate rumen volumes and digesta flows. There were no significant differences between Churra and Merino sheep either in dry-matter or fibre apparent digest

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Hohenboken, W. D., J. N. Clarke, P. V. Rattray, J. F. Smith, and M. Wheeler. "Responsiveness of ewe genotypes to varying nutritional management, and conventional genotype × environment interactions in sheep." Animal Science 47, no. 2 (1988): 253–62. http://dx.doi.org/10.1017/s0003356100003330.

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ABSTRACTAn experiment was conducted during 2 years to evaluate industry Coopworth, industry Romney and Waihora Romney ewes (a strain selected for 10 years for increased ewe productivity) in a variety of nutritional and management treatment combinations. Waihora Romneys were most productive with small and inconsistent differences between industry Romneys and Coopworths. Conventional cross-classified analyses of variance did not reveal large, consistent nor economically important ewe genotype × nutritional treatment or year interactions. Additional analyses were designed to investigate whether t

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