Results 121 to 130 of about 272 (163)
Freemartinism among singleton bovine females born from multiple embryo transfer
Theriogenology, 1995 H. Kadokawa +6 more
exaly +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Sex Panic and the Productive Infertility of the Freemartin
Technology and Culture, 2023abstract: Freemartinism is a biological phenomenon in genetically female cows born from a dizygotic twin pregnancy. Placental connections—blood and hormones between the freemartin and their male twin—generate an intersex cow unable to conceive. In this study, the freemartin emerges in a constant state of flux: between waste and use; becoming a ...
Beech, L., Novick, T.
openaire +3 more sources
Evidence of the Freemartin Condition in the Goat
Cytogenetic and Genome Research, 1967Cytogenetic examination of a genetically polled intersex goat revealed a state of apparent XX/XY haemopoietic chimaerism. As this goat was born with a male litter mate, it is considered to be a freemartin. The possibility that genetic goat intersexes are also freemartins is suggested.
P L, Ilbery, D, Williams
openaire +2 more sources
The freemartin syndrome: an update
Animal Reproduction Science, 2005The freemartin condition represents the most frequent form of intersexuality found in cattle, and occasionally other species. This review considers the current state of knowledge of freemartin biology, incidence, experimental models, diagnosis, uses for freemartins in cattle herds, occurrence in non-bovine species, effects on the male, and highlights ...
openaire +2 more sources
Nature, 1958
WITH cattle twins of opposite sex the female is in almost all cases infertile and shows varying degrees of masculinity, both in behaviour and in the morphology of the reproductive tract. Such females are known as freemartins. Swett et al. 1 consider that the freemartin condition is due to irreversible modification of the female by masculinizing ...
N. W. MOORE, L. E. A. ROWSON
openaire +1 more source
WITH cattle twins of opposite sex the female is in almost all cases infertile and shows varying degrees of masculinity, both in behaviour and in the morphology of the reproductive tract. Such females are known as freemartins. Swett et al. 1 consider that the freemartin condition is due to irreversible modification of the female by masculinizing ...
N. W. MOORE, L. E. A. ROWSON
openaire +1 more source
Cattle twins and freemartin diagnosis
Veterinary Record, 1978Some cattle breeding improvement programmes particularly in continental Europe aim to reduce the costs of rearing calves by increasing the number suckled by each cow. This encourages the rearing of twins and an increase in the number of heifers born twin-to-bull.
F, Kästli, J G, Hall
openaire +2 more sources
Reproductive anatomy and cytogenetics of freemartin heifers
Veterinary Record, 1981Out of a batch of 46 heifers obtained for breeding 19 were found to be freemartins by both anatomical and cytogenetic examination. Considerable variation existed in the reproductive tracts of these freemartins from structures that were essentially female to some that were essentially male in type.
P R, Wilkes, W V, Wijeratne, I B, Munro
openaire +2 more sources
The Prenatal Development of Bovine Freemartins
1975Freemartins in cattle have long been a classical example of naturally occurring intersexuality in a common animal species. The beautiful studies of Frank Lillie (1916, 1917, 1923) and of his pupils (Chapin, 1917; Willier, 1921; Bissonnette, 1924, 1926) and those of Keller and Tandler (1916) are well known.
A. Jost +3 more
openaire +1 more source