Veterinary Archives, Vol. 85 No. 1, 2015.
Case report
A cytogenetic study of heterosexual quadruplets of cattle (Bos indicus).
Joydip Biswas
; Karyotyping and Molecular Biology Laboratory, Frozen Semen Bull Station, Paschim Banga Go-Sampad Bikash Sanstha, Haringhata Farm, Mohanpur, Nadia, West Bengal, India
Sukanta Biswas
; Dakshin Dinajpur Krishi Vigyan Kendra, Uttarbanga Krishi Viswavidyalaya, Majhian, Patiram Dakshin Dinajpur, West Bengal, India
Subhransu Pan
; Department of Livestock Production and Management, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
Ajoy Mandal
; National Dairy Research Institute, Eastern Regional Station, Kalyani, Nadia, West Bengal, India
Abstract
The birth of live heterosexual quadruplets (three females and one male) in cattle (Bos indicus) is a very rare event and hence this study was conducted to observe the chromosome constitution of the dam and the heterosexual quadruplets. The cytogenetic study revealed sex chromosome chimerism (2n = 60, XX/XY) and preponderance of female cells (XX) in the heterosexual quadruplets, and the dam exhibited 2n = 60, XX chromosome complement. A high similarity of chimeric ratios was observed in all the calves and a relationship was also apparent between the chimeric ratio and the distribution of sex of fetuses.
Keywords
quadruplet; Bos indicus; cytogenetics; chimerism; freemartin
Hrčak ID:
135352
URI
Publication date:
23.2.2015.
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