Results 11 to 20 of about 272 (163)
Early Diagnostics of Freemartinism in Polish Holstein-Friesian Female Calves [PDF]
Animals, 2019 Freemartinism in females born from heterosexual multiple pregnancies is characterized by the presence of XX/XY cell lines due to the formation of a shared blood system by anastomoses between fetal membranes of co–twins and leads to disturbed ...
Anna Kozubska-Sobocińska +2 more
exaly +3 more sources
Development and diagnosis of freemartinism in cattle [PDF]
In Practice, 1990 Susan E. Long
exaly +3 more sources
Abnormal position of lymph nodes in a freemartin sheep [PDF]
Veterinary Medicine: Research and Reports, 2012 Angela M Gonella-Diaza, Luz Zoraya Duarte, Sergio Dominguez, Pedro A SalazarClínica de Grandes Animales, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Cooperativa de Colombia, Bucaramanga, Santander, ColombiaAbstract: In this ...
Salazar PA +3 more
doaj +2 more sources
The ambiguity of freemartinism diagnosis in cattle revealed by cytogenetic and molecular techniques
Czech Journal of Animal Science, 2004 Nineteen heifers and three male co-twins, originating from heterosexual twin pregnancies, were analysed with the use of cytogenetic and molecular techniques.
J. Nowacka +6 more
doaj +2 more sources
THE INCIDENCE OF FREEMARTINISM IN SHEEP [PDF]
Reproduction, 1971 Summary. A survey of sex chimaerism in the lymphocytes of sheep twins of mixed sex was made to attempt to establish the frequency of freemartinism in sheep. The sex of the karyotype was used as a criterion. Two sets of animals with sex chimaerism were found among the 161 sets which were examined; the females were freemartins.
exaly +3 more sources
, 2012 Freemartinism is one of the most commonly found intersex conditions in cattle, although it may also occur in small ruminants. The freemartin phenotype appears in a dizygotic twin pregnancy where one twin is a male and the other is a female. Due to precocious anastomoses between the placental vascular systems of the two fetuses, masculinising molecules ...
Båge, Renee +2 more
core +4 more sources
Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed. [PDF]
J Vet Sci, 2018 The freemartinism syndrome affects almost all female calves born as co-twins to male calves, whereas little is known about this phenomenon in female sheep.
Marí P, Casellas J.
europepmc +2 more sources
Animal Genetics, Volume 54, Issue 5, Page 613-618, October 2023., 2023 Abstract In about 90% of multiple pregnancies in cattle, shared blood circulation between fetuses leads to genetic chimerism in peripheral blood and can reduce reproductive performance in heterosexual co‐twins. However, the early detection of heterosexual chimeras requires specialized tests. Here, we used low‐pass sequencing data with a median coverage
Dorothea Lindtke +3 more
wiley +1 more source
Degree of leukochimerism with calf age in Angus‐crossbred twin sets
Animal Genetics, Volume 54, Issue 5, Page 619-622, October 2023., 2023 Abstract Twinning in cattle is infrequent and usually undesired. It can result in an increased occurrence of abortion and dystocia, reduced calf survival and a high likelihood of freemartinism in mixed‐sex twins. Twin gestations are also commonly associated with the formation of placental vascular anastomoses (PVA) between twins. Through PVA they share
Heather L. Hunt, Brian W. Kirkpatrick
wiley +1 more source
Characterisation of eight cattle with Swyer syndrome by whole‐genome sequencing
Animal Genetics, Volume 54, Issue 2, Page 93-103, April 2023., 2023 Abstract Swyer syndrome is where an individual has the karyotype of a typical male yet is phenotypically a female. The lack of a (functional) SRY gene located on the Y‐chromosome is implicated in some cases of the Swyer syndrome, although many Swyer individuals with an apparently fully functional SRY gene have also been documented.
Donagh P. Berry +9 more
wiley +1 more source