Hermaphrodism in Milk Goats

Eaton, Orson N.; Simmons, V. L.

doi:10.1093/oxfordjournals.jhered.a104733

Cited by 26 publications

(6 citation statements)

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“…This approximates to the sex ratio in Saanen goats recorded by Buechi (1957), i.e. 56-3:35-3:8-4, whereas Eaton & Simmons (1939) found a still higher percentage of hermaphrodites in this breed at Beltsville, U.S.A., namely, 49-3:39-6:11-1. In the British Saanen, Paget (1943) recorded as much as 14-3 % hermaphrodite kids.…”

Section: Sex Ratiosupporting

confidence: 84%

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Fertility and birth weights of goats in a subtropical environment

Epstein

Herz

1964

J. Agric. Sci.

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Records of fertility and birth weights were examined in eight breeds of goat, indigenous to, or imported into, the subtropical environment of Israel. These included the local Syrian Mountain, Negev and Damascus breeds, and the imported Malta, Appenzeller, Saanen, Fawn German and Anglo- Nubian.All breeds of goat, local or imported, kidded at the end of winter and in early spring, and all, save the late-maturing Damascus and part of the Anglo- Nubian, kidded for the first time at the age of 1 year.In imported breeds of goat which acclimatized well in the subtropical environment fertility was not impaired.

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Section: Sex Ratiosupporting

confidence: 84%

“…Compared with the birth weights of Saanen goats maintained on a high level of feeding and management in the subtropical environment of Israel, the average birth weights for this breed recorded by Eaton & Simmons (1939) at Beltsville, U.S.A., are considerably higher (Table 11).…”

Section: Saanen Goatmentioning

confidence: 93%

Fertility and birth weights of goats in a subtropical environment

Epstein

Herz

1964

J. Agric. Sci.

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“…One of the main problems was the heterogeneity of the animals studied, which usually presented internal genital organs of one sex and external genital organs of the other or both sexes. From their study of intersexuality in a herd of goats, Eaton and Simmons [1939] were the first to conclude that 'from the data presented, hermaphrodism appears to be inherited as a single recessive character', adding that 'further study is necessary, however, to confirm this'. By looking at the sex ratio, they were also the first to note that 'it appears that the large difference between the percentage of males and females among the Saanens could be accounted for by the percentage of hermaphrodites, assuming that hermaphrodites are imperfect females'.…”

Section: Background Of the Polled Goat: The Quest For The Polled Mutamentioning

confidence: 94%

Telling the Story of XX Sex Reversal in the Goat: Highlighting the Sex-Crossroad in Domestic Mammals

Pannetier¹,

Elzaïat²,

Thépot³

et al. 2011

Sex Dev

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The conditions for sex reversal in vertebrate species have been studied extensively and have highlighted numerous key factors involved in sex differentiation. We review here the history of the development of knowledge, referring to one example of complete female-to-male XX sex reversal associated with a polled phenotype in the goat. The results and hypotheses concerning this polled intersex syndrome (PIS) are then presented, firstly with respect to the transcriptional regulatory effects of the PIS mutation, and secondly regarding the role of the main ovarian-differentiating factor in this PIS locus, the FOXL2 gene.

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“…The results reported here on sex-reversed polled goats support this model. However, the mode of inheritance of intersexuality in polled goats was demonstrated as recessive (Eaton and Simmons, 1939). As in humans, the phenotypic expression of XX sex-reversed animals that lack SRY is variable.…”

Section: Discussionmentioning

confidence: 99%

Molecular analysis of 60,XX pseudohermaphrodite polled goats for the presence of SRY and ZFY genes

Pailhoux¹,

Cribiu²,

Chaffaux³

et al. 1994

Reproduction

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The polled mutation is characterized by a recessive, incompletely penetrant, hermaphroditic effect associated with the dominant genetic factor responsible for polledness in breeds of goat. The present study describes the external morphology, anatomy of the reproductive tract, histology, chromosomal constitution and Y chromosome screening of three intersex polled goats. The animals were tested for different Y-specific sequences, including SRY and ZFY. Using Southern blot and PCR amplification, no Y-derived sequences were detected in DNA from three 60,XX pseudohermaphrodite goats. This, therefore, excludes Y chromosome translocation and XX/XY chimaerism and mosaicism. This recessive mutation leading to sex reversal might be used to map and ultimately clone the autosomal genes implicated in the sex-determining pathway.

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Hermaphrodism in Milk Goats

Cited by 26 publications

References 0 publications

Fertility and birth weights of goats in a subtropical environment

Fertility and birth weights of goats in a subtropical environment

Telling the Story of XX Sex Reversal in the Goat: Highlighting the Sex-Crossroad in Domestic Mammals

Molecular analysis of 60,XX pseudohermaphrodite polled goats for the presence of SRY and ZFY genes

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