tag:blogger.com,1999:blog-1222590081823739642.post1934203291966887063..comments2024-03-28T07:28:58.459-07:00Comments on The Breeding-back Blog: Is outbreeding the wisent necessary? Daniel Foidlhttp://www.blogger.com/profile/02924677790606716751noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-1222590081823739642.post-20673658102620180252023-04-21T15:30:39.353-07:002023-04-21T15:30:39.353-07:00Can you talk about breeding back north american ho...Can you talk about breeding back north american horses that went extinct during the last ice age?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-14091344561218283942023-04-09T10:45:19.643-07:002023-04-09T10:45:19.643-07:00I think it's Dona-Urraca, the one with the exc...I think it's Dona-Urraca, the one with the excellent horns. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-41819158560315303442023-04-06T10:07:51.489-07:002023-04-06T10:07:51.489-07:00Thank u, I really couldnt find anything about thei...Thank u, I really couldnt find anything about their later whereabouts aside from being sold.🙏<br />Kjeldnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-74994010119980467012023-04-04T13:35:08.495-07:002023-04-04T13:35:08.495-07:00A significant part of the herd - including Erni - ...A significant part of the herd - including Erni - now grazes in the Haselbachtal at Nantesbuch on the grounds of the Stiftung Kunst und Natur (Art and Nature Foundation), as you can see on the foundations website https://kunst-und-natur.de/massnahmen/ganzjahresbeweidung or on Walter Frischs YouTube channel https://www.youtube.com/@walterfrisch8277 Yannicknoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-82864267922614401252023-04-04T11:15:53.454-07:002023-04-04T11:15:53.454-07:00Also: What happened to the Wörth-Heck herd?
Were t...Also: What happened to the Wörth-Heck herd?<br />Were they split up and introduced into other unrelated herds or kept as a whole by a new breeder?Kjeldnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-46192699374847563952023-04-03T22:32:40.468-07:002023-04-03T22:32:40.468-07:00On another note... smartest would be to use alread...On another note... smartest would be to use already sufficient Taurus individuals of doña eva descent (if that is the sayaguesa cow with the cool horns.Kjeldnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-28435597931241068192023-04-03T13:50:00.747-07:002023-04-03T13:50:00.747-07:00(from your other articles maybe majonesa is better...(from your other articles maybe majonesa is better suited than pajuna...or used parallely)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-25376922506505030002023-04-03T12:27:04.327-07:002023-04-03T12:27:04.327-07:00(Not related to the wisent topic although I comple...(Not related to the wisent topic although I completely agree with you)<br /><br />Dear Daniel, I recently read a description of either the auerrind (or the uruz) project, where the strategy of breeding F1 hybrids of (for example) [[sayaguesa m x watussi f] x[watussi m x sayaguesa f]] with the purpose of creating true F2 crosses was proposed. Reason stated was the breaking of the heterozigosis((?)I know what it means altho not how to spell it right) effect. Aside from asking why this isn't done in neither the Taurus, TaurOs, Uruz nor Auerind projects. Wouldn't a line as such be useful if it was stabilized before further interbreeding?<br /><br />(On another note: what are you thought about said proposal being used in creating two stable cross lines of [watussi x yakut cattle] and [pajuna x chianina]?<br />The watussi and yakut descendant are possible to receive the horn size of the watussi and the hardiness and proportions/body shape of the yakut.<br />And they would receive, if only those were used to begin with, a reasonable wild coloring.<br />For the chianina x pajuna, if only the most underived pajuna-strains were used, the size of the former with the proportions, horn curvature and wild coloring from the latter, with sexual dimorphism and long leggedness of both, could create an aurochs with teeny tiny horns.<br />Fusing both strains, after breeding only the respective F2s with all desired features among each other, would give nice specimen to be used in the current four breeding back projects.<br />Breeding plan:<br />[W(atussi), y(akut), c(hianina), p(ajuna)]<br /><br />F0: wm x yf | ym x wf | cm x pf | pm x cf<br /> \ / \ / \ / \ /<br />F1: m f m f m f m f<br /> \ X / \ X /<br />F2: m f m f m f m f<br /> \ X / \ X /<br />F3: m f m f<br /> \ X /<br />F4: m f m f<br /> \ X /<br />F5: m f<br /> \ /<br />F6: m f<br /><br />If cows reach maturity at age 2 and have a gestation period of a little below 300 days: roughly 3 years before the next generation is mature. If the sample cattle of the four root-breeds were mature right now, and breeding could start this year, it would optimally take 3x6=18 years to reach the envisioned genetically stable quarter-cross. ( But only if there were enough F0 for each breed since statistically less than one in four of the true F2s would receive all the wanted qualities phenotypically ( for recessive stuff even fewer)).<br />Sadly this is just a thought-experiment as I lack not just time and money but also suitable space to not only gather and nurture enough F0s but also keep breeding them til they reach their final stage. For now I personally hope that both the underived and uncrossed strains of the yakut and pajuna cattle remain long enough for someone to turn this into reality. (and breed both of them along the way)<br />I hope my improvised breeding tree is sufficient... XD.<br />I'd really like to hear(read) your opinion regarding the stated topics.<br /><br /><br />Kjeldnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-10267121209243118302023-03-09T16:31:13.336-08:002023-03-09T16:31:13.336-08:00I agree with your approach Daniel, build up the nu...I agree with your approach Daniel, build up the numbers first and monitor herd health before starting an introgression. After a similar discussion on a Facebook group a few years back I asked a member who worked with a large herd of wisent if they had seen many examples of birth defects and illness that are sometimes mentioned about wisent and they hadn't at all, adding they regularly bring in new blood from other herds.David Kennynoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-72684556573285778042023-03-09T10:33:42.207-08:002023-03-09T10:33:42.207-08:00When I visited the Avesta Wisent breeding station ...When I visited the Avesta Wisent breeding station a few years ago, I was informed that sometime in the 1930's an accidental cross with a american bison hybrid had occurred, but those lines had since been culled out.<br /><br />https://avesta.se/avesta-visentpark/english/Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1222590081823739642.post-4084717453218128932023-03-09T10:15:59.969-08:002023-03-09T10:15:59.969-08:00Prehistorich large clay sculpted wisents from Troi...Prehistorich large clay sculpted wisents from Trois Frères: https://en.wikipedia.org/wiki/Cave_of_the_Trois-Fr%C3%A8res#Tuc_d'AudoubertAnonymousnoreply@blogger.com