Synaptonemal complex analysis of Nellore and Gyr breeds of Bostaurus indicus
作者:
MarciaDenise Paixao Scavone,
Claudio Oliveira,
LuziaAparecida Trinca,
Fausto Foresti,
期刊:
Caryologia
(Taylor Available online 2000)
卷期:
Volume 53,
issue 2
页码: 141-146
ISSN:0008-7114
年代: 2000
DOI:10.1080/00087114.2000.10589189
出版商: Taylor & Francis Group
关键词: Bos taurus indicus;cattle;meiosis;synaptonemal complex;synaptonemalcomplex failure
数据来源: Taylor
摘要:
A synaptonemal complex (SC) study of specimens of Nellore and Gyrbreeds of Bostaurus indicuswas performed with the main objective to identify and determinate the frequency of abnormalities of SC and the frequency of cells with abnormalities. All animals analyzed had 29 autosomal bivalents and one sexual bivalent. The Nellore breed had 30.00% of cells with SC abnormalities while the Gyr breed had only 11.11%. Statistical analyses showed that there were not significant differences for the number of cells with abnormalities among the breeds studied. The subspecies Bos taurus indicus had 16.92% of cells showing abnormalities, being 62.82% of these abnormalities in zygotene and 37.18% in pachytene. Some aspects regarding the frequency of cells with abnormalities and the fertility of Nellore and Gyr breeds are discussed.
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