Podcasts about canis familiaris

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Best podcasts about canis familiaris

Latest podcast episodes about canis familiaris

Judy Croon
'Laugh Long And Prosper 'with Comedian and Writer Carolyn Bennett

Judy Croon

Play Episode Listen Later Dec 3, 2022 44:29


Hey there, I'm Judy Croon Canada's keynote humourist Welcome to another episode of Laugh Long and Prosper -shelf help with a dash of humour. Voted one of the best podcasts in Canada last year by CTV. Today's podcast is sponsored by: TROOL Social knows To be visible online you have to be fully committed, congruent in who you are and what you do. YOU MUST ADOPT THE RIGHT MINDSET- Steer your ship to the SS Optimization & TROOL Social To get you Sailing On Course Check out www.TroolSocial.com Today it's Monday – That means it's time for Just Another Mindful Monday. Today's guest is Carolyn Bennett. Carolyn Bennett is a writer and comedian. Selected TV credits include This Hour Has 22 Minutes, CBC COMICS, and The NHL Awards. Produced CBC radio plays include Mixed Media, and Pure Convenience. Produced stage plays include Cancel Culture, Runtkiller, Canis Familiaris, and Double Down Helix. She won the 2013 TIFF Studio Screenwriting Intensive Jury Prize, and was a member of the 2017 Thousand Islands Playwrights' Unit where her play The Monarchists received a public workshop. Bennett's 2019 debut novel, Please Stand By, was published by Vancouver's Now or Never. She is currently working on a collection of short stories, and was mentored by writer K.D. Miller. Her story Be My Zero-Sum was recently published in the Quarantine Review, and another story, Moral Support Desk, is upcoming in Canadian Notes and Queries. She freelances for the Toronto Star, Canadian Immigrant, among others. She had a brief stint as a government writer and speechwriter, for which she will receive a small pension, which she finds amazing. To find out about Hirut comedy nights, go to http://www.Hirut.ca To reach Carolyn, you can go to http://www.CarolynBennettWriterComic.Com To find out about Carolyn's play 'Cancel Culture' go to http://www.AlumnaeTheatre.com To find out about her memoirs writing course, go to http://www.BacklaneStudios.ca To find out about her book, 'Please Stand By' go to https://www.amazon.ca/Please-Stand-Carolyn-Bennett/dp/1988098858 Judy Croon is Canada's Keynote Humorist, Tedx motivational speaker, comedian and stand-up coach at Second City. She has worked with many celebrities including; John Cleese, Jon Stewart, and Joan Rivers. Her specials have appeared on NBC, CBS, CTV and The Comedy Network. She is a co-author of ‘From the Stage to the Page: Life Lessons from Four Funny Ladies!” Judy draws from her standup performance and coaching experience to entertain, inform and inspire in her dynamic keynote entitled, ‘Relieving Work Related Stress with Humour'. Judy is the creator/host of ‘Laughlines' and ‘Stand Up For The Girls' which have both helped raise over $650,000 for breast cancer research.

This Animal Life
Behind the Scenes in the Genius Dog Challenge

This Animal Life

Play Episode Listen Later Oct 7, 2021 65:28


Lots of people live with smart dogs, but what is it like to live with a canine genius? Meet border collie Squall and his housemate Bobbie Kurivial, one of only six dog-human teams to make it to the end of the international Genius Dog Challenge.  On a quest to find "canine Einsteins or Mozarts," ethologists at Eötvös Loránd University in Hungary issued the Genius Dog Challenge, winnowed the contestants down to just the few true geniuses, studied their world learning capabilities to much astonishment, and took Bobbie and Squall on the adventure of a lifetime. Want to follow up on our sources or watch any of the videos we mention? Go to ThisAnimalLife.com and click on Show Notes.  Interested in KLIMB tables and other Blue-9 products we discuss? Click here to learn more and apply our promo code, ANIMAL2020 to get free shipping and $20 off. References:   Csányi, Vilmos, If Dogs Could Talk: Exploring the Canine Mind, translated by Richard E. Quandt, North Point Press, December 2005. Dror, Shany, “Do Dogs Understand Us?” The Family Pupz Podcast, by Tanya & Charles Lim, Apple Podcasts, September 2021.  Dror, Shany, & Adam Miklosi, “Max & Squall,” Genius Dog Challenge, YouTube, November 18, 2020. Dror, Shany, & Claudia Fugazza, “Finals: Nalani & Squall,”  Genius Dog Challenge, YouTube, December 16, 2020.  Family Dog Project, founded by Vilmos Csányi, Ádám Miklósi, and József Topál to study the behavioral and cognitive aspects of the dog-human relationship. Fugazza, Claudia, Dr.,  Do as I Do: Using Social Learning to Train Dogs, Dogwise Publishing, June 30 2014. Fugazza, Claudia, “Word learning dogs (Canis Familiaris) provide an animal model for studying exceptional performance,” Nature, July 7, 2021.  Genius Dog Challenge, research conducted at Eötvös Loránd University, Department of Ethology and The Family Dog Project. If your dog knows the names of more than 10 objects or toys and you are interested in cooperating, you may apply to participate with your dog here. Genius Dog Challenge social media: YouTube: https://www.youtube.com/c/geniusdogchallenge Instagram: http://instagram.com/geniusdogchallenge Facebook: https://www.facebook.com/GeniusDogChallenge And if you think your dog is a genius, reach out to Shany Dror directly at shanydror@geniusdogchallenge.com! Inskeep, Stephen, “Researchers study very smart dogs for their grasp of human language,” NPR Morning Edition, October 6, 2021. Miklosi, Adam, Dr.  Dog Behaviour, Evolution, and Cognition, Oxford University Press 2016. Morell, Virginia, “Some dogs are geniuses--just like humans,” National Geographic, July 14, 2021. Morrison, Ryan, “Is your dog gifted?” Daily Mail,  October 6, 2021. Shany Dror, Ádám Miklósi, Andrea Sommese, Andrea Temesi and Claudia Fugazza, “Acquisition and long-term memory of object names in a sample of Gifted Word-Learner dogs,” Royal Society Publishing, October 6, 2021. Pilley JW, Reid AK. 2011Border collie comprehends object names as verbal referents. Behav. Processes 86, 184-195. (doi:10.1016/j.beproc.2010.11.007) Crossref, PubMed, ISI, Google Scholar Pilley, John W. Dr., Chaser: Unlocking the Genius of the Dog Who Knows a Thousand Words, Houghton Mifflin Harcourt, October 2013. Robins, Mary, “How Much Language Do Dogs Really Understand?” American Kennel Club News, March 2021.  

Stageworthy
#137 – Carolyn Bennett & Jennifer McKinley

Stageworthy

Play Episode Listen Later Jul 17, 2018 64:05


Carolyn Bennett is an award-winning writer (2013 TIFF Screenwriting Intensive Jury Prize) and comedian living in Toronto. She was part of the 2017 Thousand Islands Playwrights' Unit and developed the full-length play The Monarchists. Produced plays include Mixed Media, Pure Convenience (CBC Radio), Runtkiller, The Short List,Hitler's Ass, Canis Familiaris and Sick Kids Wanna Talk To You. Her debut novel Please Stand By from Vancouver's NON Publishing will be released Fall 2019. Etc, etc...https://en.wikipedia.org/wiki/Carolyn_Bennett_(comedian)Jennifer McKinley was a co-artistic director of Alumnae Theatre’s New Ideas Festival (2014-2017) in Toronto. She is a lead coordinator with the Feminist Art Collective, and wrote, produced and performed her solo show, Operation SUNshine at the 2017 Toronto Fringe. Operation SUNshine also had a run at the 2018 Feminist Fuck It Festival in Toronto Double Down HelixA dark comedy that examines the implications of retail genotyping, DoubleDownHelix (DDH) asks the audience "to whom do you belong?"DoubleDownHelix is directed by Jennifer McKinley, a co-artistic director of Alumnae Theatre’s New Ideas Festival (2014-2017) in Toronto. She is a lead coordinator with the Feminist Art Conference, and wrote, produced and performed her solo show, Operation SUNshine at the 2017 Toronto Fringe. DDH is stage managed by Natasha Rotondaro, an emerging theatre artist and soprano.Open To The Public Theatre presents: DoubleDownHelix Kingston Storefront Fringe Festival Venue 3 • Saturday July 21 @ 2PM • Sunday July 22 @ 6PM • Tuesday July 24 @ 10:30PM • Wednesday July 25 @ 4PM • Friday July 27 @ 8:30PM • Saturday July 28 @ 6PM

Ologies with Alie Ward
Cynology (DOGS) with Brandon McMillan

Ologies with Alie Ward

Play Episode Listen Later May 29, 2018 76:07


Your best friend is a hairy beast and that's something to celebrate. This episode is a little different in tone and let's just say GOOD LUCK NOT CRYING, SUCKERS. Alie sits down with "Lucky Dog" host Brandon McMillan, who cares more about saving shelter mutts than he does about the 3 Daytime Emmys he's won for doing it. Learn about his Hollywood drama-worthy backstory that led to being one of the world's most celebrated dog trainers, plus how to calm anxious pups, breeders vs. shelter rescues, and how and why dogs help our brains and save our lives. Dogs 4 president 2020. For more info, see: Brandon's website: www.canineminded.com Follow Brandon on Instagram and Twitter Brandon's non-profit to provide service dogs to veterans is called ARGUS. I said Angus; how embarrassing. Become a patron of Ologies for as little as a buck a month: www.Patreon.com/ologies OlogiesMerch.com has hats, shirts, pins, totes! Follow @Ologies on Twitter or Instagram Follow @AlieWard on Twitter or Instagram More links at www.alieward.com Clip credits: “I’m a loner, Dottie. A rebel” is from the world’s best movie, Pee-Wee’s Big Adventure.  Who let the dogs out? Baha Men did. Support the show.

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 06/07
Ausdrucksverhalten von Hunden (Canis familiaris) gegenüber dem Menschen in einem Verhaltenstest und Beschwichtigungssignale in der Hund-Mensch-Kommunikation

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 06/07

Play Episode Listen Later Jul 20, 2013


Sat, 20 Jul 2013 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/16177/ https://edoc.ub.uni-muenchen.de/16177/1/Bublak_Angelika.pdf Bublak, Angelika

UC Berkeley Graduate Council Lectures (Video)
Considering Dogs with Alexandra Horowitz

UC Berkeley Graduate Council Lectures (Video)

Play Episode Listen Later Jun 10, 2013 53:07


dogs psychology alexandra horowitz domestic dogs canis familiaris
UC Berkeley Graduate Council Lectures (Audio)
Considering Dogs with Alexandra Horowitz

UC Berkeley Graduate Council Lectures (Audio)

Play Episode Listen Later Jun 10, 2013 53:07


dogs psychology alexandra horowitz domestic dogs canis familiaris
Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 05/07
Funktionelle Morphologie des Nebenhodens des Hundes (Canis familiaris) unter besonderer Berücksichtigung der Basalzellen

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 05/07

Play Episode Listen Later Jul 30, 2011


Sat, 30 Jul 2011 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/13376/ https://edoc.ub.uni-muenchen.de/13376/1/Philipp_Evelyn.pdf Philipp, Evelyn

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 04/07
Ultrastrukturelle, immunzytochemische und glykohistochemische Untersuchungen am Blut des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 04/07

Play Episode Listen Later Feb 13, 2010


Sat, 13 Feb 2010 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/11754/ https://edoc.ub.uni-muenchen.de/11754/1/Morgott_Louise.pdf Morgott, Louise

blut untersuchungen hundes ddc:500 canis familiaris ddc:590
Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 04/07
Katalogisierung von Phänotypen, Genotypen und Gentests molekulargenetisch charakterisierter Erbfehler beim Haushund (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 04/07

Play Episode Listen Later Jul 17, 2009


SUMMARY The scope of the present work was to provide an scientific overview of the actually state of canine genetics of hereditary diseases. Causative mutations, inheritance modes, breed disposition and incidence of the single genetic defects in the affected dog populations have been outlined. Additionally a special focus aims on the gathering of actually available genetic tests for respective hereditary diseases within different dog breeds. The present state of science covers 76 genetically characterized hereditary diseases of the dog (status: January, 2009). Their inheritance mode, genetic basis, pathophysiology, breed dispositions and genetic control are shown here in detail. Up to date, 61 DNA tests are available for canine hereditary diseases. A compendium of the actually available genetic tests for the affected breeds with different suppliers is included in the appendix of this work. In the sector of genome analysis and screening tests for dogs, high research activity can be observed. This contributes to the specific suitability of the species dog as an animal model for the investigation of human hereditary diseases. The partial considerable inbreeding of some dog breeds leads to the appearance of numerous monogenetic hereditary diseases which are mostly of recessive nature. In addition, research results of the last few years demonstrate that these diseases are phenotypical or even genotypical homologues to human hereditary diseases. The number of the dog´s identified genetic mutations, which are connected to hereditary diseases, has increased in the past years and will increase continuously in the next years. An application of the enlarged genetic research results is as well of interest to the human medicine, as to the stockbreeding. The application of molecular-genetic screening methods offers dog breeders the possibility to determine the genetic status of their breeding dogs, to select healthy animals and to minimize future hereditary defects. The incidence of hereditary diseases can be reduced using genetic screening tests on the breeding dogs before breeding, introducing DNA of breeding dogs from other populations and avoiding the inbreeding within different pedigrees of dogs. Since a couple of years numerous screening and breeding programmes and the generation of genotype data banks are an obligation within many associations of dog breeders. This might accelerate an offbreeding of hereditary defects. The rising quantity of genetic screening tests and further investigation of undecoded mutations, will allow researches to amplify the understanding in the wide field of the polygene diseases. Relieving the succeeding generations of pedigree dogs from monogene and polygene hereditary sufferings is the future aim.

dna beim relieving causative gentests ddc:500 genotypen canis familiaris katalogisierung ddc:590
Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 03/07
Anatomische und computertomographische Untersuchungen am gesunden und degenerativ veränderten Schulter- und Ellbogengelenk des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 03/07

Play Episode Listen Later Feb 9, 2007


Das Ziel dieser Studie ist es, die morphologischen Parameter der Belastung an gesunden und osteoarthrotisch veränderten Schulter- und Ellbogengelenken mithilfe anatomischer und CT-osteoabsorptiometrischer Untersuchungen näher zu beschreiben. In die Untersuchungen wurden 52 Schultergelenke und 53 Ellbogengelenke einbezogen. Beim Schultergelenk steigt die subchondrale Knochendichte vor allem im Bereich ihrer Maxima mit zunehmender Degeneration des Gelenks an; dies trifft für das Ellbogengelenk nicht in vollem Umfang zu. Degenerative Schäden am Gelenkknorpel finden sich sowohl in druck- als auch dehnungsbelasteten Arealen der Gelenkfläche. Für Caput humeri, Condylus humeri und Ulna können Prädilektionsstellen für Knorpelläsionen angegeben werden, während dies bei Radius und Skapula mehr Schwierigkeiten bereitet. An keiner Gelenkfläche konnte eine gute Korrelation von Gelenkknorpeldicke und subchondraler Knochendichte nachgewiesen werden.

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 02/07
Immunhistochemische, ultrastrukturelle und glykohistochemische Untersuchungen am Nebenhoden des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 02/07

Play Episode Listen Later Jul 28, 2006


Anhand immunhistochemischer, ultrastruktureller, lichtmikroskopischer und glykohistochemischer Untersuchungen wurde der Nebenhoden des Hundes untersucht.

anhand untersuchungen hundes ddc:500 canis familiaris ddc:590 nebenhoden
Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 02/07
Morphologische und biomechanische Eigenschaften des Karpalgelenks (Articulatio carpi) des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 02/07

Play Episode Listen Later Feb 10, 2006


The objective of this study was to investigate anatomical and biomechanical parameters of the canine capal joint in order to determine the physiological situation of articular loading. 121 carpal joints of 61 dogs of varying age weighing more than 20 kg were examined. The joint angle of the carpal joint was measured in 50 standing dogs. Long term tensile stresses of the articular cartilage and the subchondral bone were determined by the split line method. The distal articular surface of the radius showed two different types of split line patterns, a clear transverse orientation or one singular attractive point at the dorsal rim of the articular surface. The split lines at the dorsal aspect of the radius diverged towards its distal end, which is an evidence of a transverse strain of the articular surface during loading. In all joints compressively loaded regions were located especially in the dorsal parts of the articular surfaces. The articular surfaces of the second carpal bone showed two different split line patterns depending on the weight of the dogs. The palmar aspects of the proximal articular surfaces of the metacarpal bones showed evident transverse tensile stress. The silicon cast method was used to determine the contact areas and Fuji pressure sensitive film to determine the contact pressures at different loading steps. In all joints of the carpus the contact areas increased nonlinear with an increasing loading rate. They never included more than 50% of the convexe articular surface. Contact areas in the antebrachiocarpal joint always were larger than those of the midcarpal and carpometacarpal joint at the same loading step, the latter being nearly identical for each loading step. Because of the hyperextension the antebrachiocarpal contact areas were located close to the dorsal edge of the articular surfaces, while in the midcarpal and carpometacarpal joint they reached further palmar. The centres of the contact pressures corresponded closely with the centres of the contact areas. Greater pressures in the antebrachiocarpal joint were located medially, in the midcarpal joint they were equally distributed over the whole articular surface, while in the carpometacarpal joint they were found laterally. The long term loading situation of the articular surfaces was investigated by means of computertomography-osteoabsorptiometry (CTOAM). Individual CT-datasets were matched onto one target joint surface. Thus the mean values of all bone density measurements of the subchondral bone could be visualized. Areas of high bone density were very consistent and coincided with the location of high compressive load in the split line investigation and the contact areas. In the antebrachiocarpal joint, areas with high bone density were found dorsomedially. In both the midcarpal and carpometacarpal joint they were more equally distributed over the joint surfaces. With increasing age the subchondral bone density increases as well. Furthermore the bone density maxima are more clearly demarcated in older animals. The joint angle of the carpal joint of standing dogs showed a significant correlation with the age of the animals. Body weight and breed did not have any influence. From the biomechanical point of view the distal radioulnar ligament is a tensile loaded structure which connects radius and ulna distally and inhibits a separation of the two bones in stress. Moreover it increases the congruence of the antebrachiocarpal joint and thus is stressed with compressive forces. Because of the physiologic hyperextension and valgus-angulation of the carpal joint the articulation with the greatest range of motion, the antebrachiocarpal joint, is loaded unilaterally. Due to the limited range of motion in both the midcarpal and carpometacarpal joint the load is equally distributed over the articular surface in these two joints.

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07
Anatomische und biomechanische Untersuchungen am Kniegelenk (Articulatio genus) des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07

Play Episode Listen Later Jul 23, 2004


Ziel dieser Arbeit war es, die physiologische Belastungssituation im Kniegelenk des Hundes darzustellen. Dazu wurden die Kniegelenke von Hunden (männlich, weiblich) verschiedenen Alters und unterschiedlicher Größe und Rassen untersucht. Es wurden nur Tiere in die Studie eingeschlossen, deren Gelenke frei von makroskopischen Knorpelschäden und arthrotischen Knochenzubildungen waren. Mit Hilfe der Spaltliniendarstellung konnte die Vorzugsrichtung der Kollagenfasern im Gelenkknorpel und im subchondralen Knochen als morphologisches Korrelat für Dehnungsspannungen nachgewiesen werden. Zur Untersuchung der Kontaktstellen der Art. femoro-tibialis wurde in Druckversuchen mit stufenweise ansteigender Kraft Silikonabdrücke angefertigt und mit Druckfilmen, die auftretenden Gelenkdrücke quantitativ bestimmt. Zur Beurteilung der Langzeitbelastung des Gelenks wurde die subchondrale Knochendichte bestimmt. Die CT-Daten der gescannten Gelenke wurden mit der CTOAM (CT-Osteoabsorptiometrie) ausgewertet. Mit Hilfe der Bildregistrierung konnten alle Individualdatensätze auf ein Normgelenk projiziert werden und durch Übereinanderlagern ein Summationsbild mit der durchschnittlichen Knochendichteverteilung gewonnen werden. Die radiäre Orientierung der Spaltlinien auf der Tibia und die sagittale Verlaufsrichtung auf der Trochlea ossis femoris lässt auf dominierende Dehnungsspannungen schließen, wohingegen die teilweise spaltlinienfreien Bereiche der Patella als ein Zeichen dort auftetender Druckbelastung zu werten sind. Das sehr uneinheitliche Spaltlinienmuster auf den untersuchten Patellae lässt auf unterschiedliche individuelle Belastungssituationen in der Art. femoro-patellaris schließen. Die Druckversuche gaben bei kontinuierlichem Kraftanstieg keine lineare Vergrößerung der Kontaktflächen, sondern zeigten nach einem deutlichen Anstieg während der niedrigen Belastungsstufen (25-50% des Körpergewichts) in der mittleren Belastung ein Plateau und erst bei hoher Belastung (200-250% des Körpergewichts) eine erneute deutliche Größenzunahme. Bei der Untersuchung mit drucksensiblen Filmen wurden im Vergleich kleinere Kontaktflächen gefunden. Die Knochendichteverteilung in der Tibia- und Femurgelenkfläche zeigen jeweils auf den Kondylen ein zentrales Dichtemaximum. Die konkave Facies articularis tibiae zeigt eine höhere Knochendichte als die korrespondierenden konvexen Femurkondylen. Die mittlere Knochendichte der Patella erreicht diese Werte nicht.

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07
Fortpflanzungsphysiologie und assistierte Reproduktion beim Haushund (Canis familiaris) - eine Literaturstudie

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07

Play Episode Listen Later Jul 18, 2003


The aim of this work was the evaluation of literature about physiology of reproduction, assisted reproduction technologies and associated biotechniques in domestic dogs (Canis familiaris). In the bitch preovulatory follicular luteinization results in exposure of oocytes to increasing concentrations of progesterone 1-2 days prior to ovulation. Ovulation occurs approximately two days after the LH-peak. The bitch ovulates primary oocytes with intact germinal vesicle, which requires 2-5 days for the completion of the meiotic divisions within the oviduct. Artificial insemination (AI) in bitch can be performed either intravaginally or intrauterinely with fresh, chilled or frozen-thawed spermatozoa. Intrauterine insemination (IUI) may be carried out surgically by laparotomy or laparoscopy or non-surgically using transcervical cathetherization. In the bitch, IUI results in a high whelping rate and litter size comparable to those after natural mating. Cryopreservation of dog semen has been successfully accomplished and a variety of extenders, freezing and thawing protocols have been published. AI with cryopreserved semen generally yields lower pregnancy rates if intravaginal deposition of semen is used. A reliable method for synchronization and induction of a fertile oestrus cycle as well as superovulation by hormone treatment are not available. Canine oocytes may resume meiosis spontaneously in vitro, although at a much lower efficiency than in most other domestic species. In vitro maturation (IVM) of oocytes results in 20 to 70 % oocytes entering germinal vesicle breakdown (GVBD). Only 10 to 40 % oocytes progress to metaphase I to II. It has been shown, that cumulus morphology, stage of estrous cycle, oocyte size, cumulus-oocyte communication through gap junctions, age of oocyte donors, and serum supplementation of the culture medium influence the efficiency of IVM. Dog oocytes cultured within advanced preantral and early antral follicles in vitro are competent to resume meiosis and mature to the metaphase stage. The developmental potential of these oocytes was comparable to isolated cumulus oocyte complexes. The optimal culture conditions required for induction of capacitation and acrosomal exocytosis of canine sperm are yet to be established. Dog spermatozoa are able to penetrate the zona pellucida and the vitellus of homologous oocytes irrespective of the oocyte maturation stage. The developmental potential of fertilized dog oocytes in vitro is very low. Only one case of development to the blastocyst stage after in vitro fertilization (IVF) has been reported. The surgical transfer of ex vivo collected dog embryos resulted in birth of live puppys although the success rates were low. Up to date no reports of production of live pups after IVF from in vivo or in vitro matured dog oocytes exists. In one study three conceptuses were identified by ultrasonography twenty days after transfer of in vitro fertilised oocytes but no further development could be observed. Reliable protocols for cryopreservation of dog embryos have yet to be developed. Until recently, there has been limited interest in assisted reproduction techniques in the dogs. The rising significance of dogs as companion animals as well as interest in comparative aspects with wild-life canides will stimulate research in the fields of in vitro production of embryos, cryopreservation and embryo transfer of embryos.

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07
Anatomische und biomechanische Untersuchungen am Schultergelenk (Articulatio humeri) des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07

Play Episode Listen Later Jul 18, 2003


Fri, 18 Jul 2003 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/1433/ https://edoc.ub.uni-muenchen.de/1433/1/Eller_Dorothea.pdf Eller, Dorothea

eller untersuchungen hundes ddc:500 canis familiaris ddc:590
Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07
Morphologische und biomechanische Eigenschaften des Hüftgelenks (Articulatio coxae) des Hundes (Canis familiaris)

Tierärztliche Fakultät - Digitale Hochschulschriften der LMU - Teil 01/07

Play Episode Listen Later Jul 18, 2003


Morphological and biomechanical characteristics of the canine hip joint (articulatio coxae) Morphological and biomechanical parameters of the canine hip joint have been investigated for the first time in order to determine the long term loading of the hip joint surfaces. 86 hip joints of 43 predominantly large breed dogs (average age 6 years) were examined. By means of CT-osteoabsorptiometry (CT-OAM) the subchondral bone density was determined qualitatively and quantitatively. The exact topographic distribution of the subchondral bone density was shown in three-dimensional reconstructions of the hip joints in false colour code. The distribution pattern was regularly tricentric with bone density maxima located in the cranial and caudal aspects of the joint surfaces as well as in the roof of the acetabulum and the perifoveal area of the caput ossis femoris. The anteversion of the Os femoris was determined by a computed tomographical method. The findings allowed the assumption of a causal relationship between a reduced anteversion angle and a shift of the density maxima to the medial part of the joint surface of the caput ossis femoris. The main direction of the collagen fibres in the joint cartilage and the subchondral bone were traced by means of the split line method. The split line pattern established proof of an existing tension and bending in the acetabulum. Moreover it identified areas of compressive stress on the surface of the joint (cranial and caudal aspect of the lunate surface and the femoral head). Biomechanical parameters such as contact areas as well as distribution and amount of pressure were determined experimentally under physiological load conditions representing the three leg stance during slow walking. These data were gained by casting material and pressure sensitive film. At low loads and physiological angulation contact areas were mainly found at the peripheral margin of the cranial and caudal part of the facies lunata and caput ossis femoris. At the cranial roof of the acetabulum a joint space was evident in the loaded specimens up to 75% body weight. Under increasing loads the contact areas expanded towards the joint centre. The maximal contact pressure ranged from 8 to10 MPa under a load of 400% body weight. Areas of load transfer showed a more obvious bi- and tricentric distribution pattern than contact areas. With increasing loads areas of load transfer expanded to a uniform area. The results of this study established proof of the inhomogeneous load distribution in the canine hip joint. For the first time it was shown that the canine hip joint is not congruous as commonly assumed but maintains a physiological incongruity. This guarantees for an optimal load distribution in the joint and for a better nutrition of the joint cartilage. Further, it was shown that osteoarthrosis more often exists in those areas of inhomogeneously loaded joint surfaces which are exposed to larger mechanical stress a priori.