Search Results - "Großfeld, R."

In vitro effects of two different commercial freezing and thawing extenders on boar sperm quality by De Andrade, AFC, Grossfeld, R, Knox, RV

“…This study was conducted to evaluate whether there were differences in viability of cryopreserved semen when using two different freezing (Minitube Cryoguard –…”
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Effect of production management on semen quality during long-term storage in different European boar studs by Schulze, M., Kuster, C., Schäfer, J., Jung, M., Grossfeld, R.

“…•Production time and temperature management have an impact on semen quality.•One-step dilution reduces the time until final dilution.•One-step dilution…”
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Development of predictive models for boar semen quality by Kuhlgatz, D.A., Kuhlgatz, C., Aepli, M., Schumann, B., Grossfeld, R., Bortfeldt, R., Jakop, U., Jung, M., Schulze, M.

“…In this study a prognosis model is developed that predicts sperm quality characteristics based on external factors such as barn climate conditions,…”
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Development of a new antimicrobial concept for boar semen preservation based on bacteriocins by Jakop, U., Hensel, B., Orquera, S., Rößner, A., Alter, T., Schröter, F., Grossfeld, R., Jung, M., Simmet, C., Schulze, M.

“…The conventional storage temperature of 16–18 °C provides optimal conditions for the preservation of boar sperm quality, which are extremely cold sensitive…”
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New aspects of boar semen freezing strategies by Großfeld, R., Sieg, B., Struckmann, C., Frenzel, A., Maxwell, W.M.C., Rath, D.

“…Although cryopreserved boar semen has been available since 1975, a major breakthrough in commercial application has not yet occurred. There is ongoing research…”
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Sex selection of sperm in farm animals: status report and developmental prospects by Rath, D, Barcikowski, S, de Graaf, S, Garrels, W, Grossfeld, R, Klein, S, Knabe, W, Knorr, C, Kues, W, Meyer, H, Michl, J, Moench-Tegeder, G, Rehbock, C, Taylor, U, Washausen, S

“…Pre-selection of spermatozoa based on the relative DNA difference between X- and Y-chromosome bearing populations by flow cytometry is an established method…”
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Use of refractometry as a new management tool in AI boar centers for quality assurance of extender preparations by Schulze, M., Rüdiger, K., Jung, M., Grossfeld, R.

“…•Boar sperm quality is affected by inexact extender preparation.•The refractive-index correlates with osmolality in boar semen extenders.•The sensitivity is…”
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Influence of cryoprotectants glycerol and amides, combined with antioxidants on quality of frozen-thawed boar sperm by Buranaamnuay, K, Grossfeld, R, Struckmann, C, Rath, D

“…The present study was undertaken to examine whether the cooling and freezing extenders containing a mixture of antioxidants (AOs) catalase, Na-pyruvate and…”
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Dose rates of antimicrobial substances in boar semen preservation—time to establish new protocols by Schulze, M, Grobbel, M, Riesenbeck, A, Brüning, S, Schaefer, J, Jung, M, Grossfeld, R

“…Contents To achieve a standardized number of spermatozoa in the final AI dose, varying amounts of extender fluid with a fixed concentration of antimicrobial…”
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Production of piglets with sexed semen employing a non-surgical insemination technique by Grossfeld, R., Klinc, P., Sieg, B., Rath, D.

“…The aim of the present study was to ascertain whether multiparous sows could successfully be inseminated with sexed semen non-surgically. Spermatozoa were…”
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Sex selection of sperm in farm animals: status report and developmental prospects by Rath, D, Barcikowski, S, de Graaf, S, Garrels, W, Grossfeld, R, Klein, S, Knabe, W, Knorr, C, Kues, W, Meyer, H, Michl, J, Moench-Tegeder, G, Rehbock, C, Taylor, U, Washausen, S

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Early pregnancy loss in sows after low dose, deep uterine artificial insemination with sex-sorted, frozen–thawed sperm by Bathgate, R., Grossfeld, R., Susetio, D., Ruckholdt, M., Heasman, K., Rath, D., Evans, G., Maxwell, W.M.C.

“…Recent developments in reproductive technologies have enabled the production of piglets of a predetermined sex via non-surgical, low dose artificial…”
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N-Acetylaspartylglutamate (NAAG) is the probable mediator of axon-to-glia signaling in the crayfish medial giant nerve fiber by Gafurov, B, Urazaev, A.K, Grossfeld, R.M, Lieberman, E.M

“…Glial cell hyperpolarization previously has been reported to be induced by high frequency stimulation or glutamate. We now report that it also is produced by…”
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Synthesis and release of N-acetylaspartylglutamate (NAAG) by crayfish nerve fibers: implications for axon–glia signaling by Urazaev, A.K, Grossfeld, R.M, Fletcher, P.L, Speno, H, Gafurov, B.S, Buttram, J.G, Lieberman, E.M

“…Early physiological and pharmacological studies of crayfish and squid giant nerve fibers suggested that glutamate released from the axon during action…”
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Mechanisms for clearance of released N-acetylaspartylglutamate in crayfish nerve fibers: Implications for axon–glia signaling by Urazaev, A.Kh, Buttram, J.G, Deen, J.P, Gafurov, B.Sh, Slusher, B.S, Grossfeld, R.M, Lieberman, E.M

“…Crayfish nerve fibers incubated with radiolabeled glutamate or glutamine accumulate these substrates and synthesize radioactive N-acetylaspartylglutamate…”
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Properties of glutaminase of crayfish CNS: implications for axon–glia signaling by Engler, J.A, Gottesman, J.M, Harkins, J.C, Urazaev, A.K, Lieberman, E.M, Grossfeld, R.M

“…Glutaminase of crayfish axons is believed to participate in recycling of axon–glia signaling agent(s). We measured the activity and properties of glutaminase…”
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Uptake and metabolism of glutamate at non-synaptic regions of crayfish central nerve fibers: implications for axon–glia signaling by Kane, L.S, Buttram, J.G, Urazaev, A.K, Lieberman, E.M, Grossfeld, R.M

“…In crayfish and squid giant nerve fibers, glutamate appears to be an axon–glia signaling agent. We have investigated glutamate transport and metabolism by…”
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Glutamine uptake and metabolism to N-acetylaspartylglutamate (NAAG) by crayfish axons and glia by Buttram, J.G, Engler, J.A, Grossfeld, R.M, Urazaev, A.Kh, Lieberman, E.M

“…We have proposed that N-acetylaspartylglutamate (NAAG) or its hydrolytic product glutamate, is a chemical signaling agent between axons and periaxonal glia at…”
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Effect of Osmotic Shock on Protein Synthesis of Oyster Hemocytes In Vitro by Tirard, C.T, Grossfeld, R.M, Levine, J.F, Kennedy-Stoskopf, S

“…Because marine bivalves are osmoconformers, their cells may be exposed to widely fluctuating osmolality in some habitats. In vitro studies were conducted to…”
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Stress protein synthesis and peroxidase activity in a submersed aquatic macrophyte exposed to cadmium by Siesko, M.M. (McLaren/Hart Chem Risk, Lake Charles, LA.), Fleming, W.J, Grossfeld, R.M

“…Sago pondweed (Potamogeton pectinatus L.) was exposed to CdCl2 to evaluate peroxidase (POD) activity and stress protein (SP) synthesis as potential biomarkers…”
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