Results 181 to 190 of about 29,741 (229)
Some of the next articles are maybe not open access.
Rectum-testis Temperature Gradient in Zebus
Zentralblatt für Veterinärmedizin Reihe A, 2010Summary The mean rectal-testicular temperature gradient of four Nelore zebus was 5.2 ± 0.8 °C. There was no difference in the rectal (38.8 ± 0.4 °C) and intratesticular (33.6 ± 1.0 °C) temperatures between animals lying in the sun and those in the shade.
H P, Godinho, F M, Cardoso
openaire +2 more sources
1968
The karyotype of Bos indicus is identical with that of Bos taurus except for the morphology of the Y chromosome. The Y chromosome of B. taurus is a small metacentric, but that of B. indicus is a small acrocentric. Autoradiographs of DNA synthesis during the late S phase invariably show a late replicating small acrocentric.
T. C. Hsu, Kurt Benirschke
openaire +1 more source
The karyotype of Bos indicus is identical with that of Bos taurus except for the morphology of the Y chromosome. The Y chromosome of B. taurus is a small metacentric, but that of B. indicus is a small acrocentric. Autoradiographs of DNA synthesis during the late S phase invariably show a late replicating small acrocentric.
T. C. Hsu, Kurt Benirschke
openaire +1 more source
Robertsonian translocation in a Zebu bull
Theriogenology, 1985Karyotypes were prepared for ten Rahaji bulls using cultured peripheral blood lymphocytes. C-banded metaphases were prepared to identify the sex chromosomes and possible translocations. Out of the ten bulls, studied one bull had a 2n number of 59 chromosomes and carried a Robertsonian translocation.
N, Pathiraja +2 more
openaire +2 more sources
Mother–Offspring Interactions in Zebu Cattle
Reproduction in Domestic Animals, 2008ContentsThe knowledge of the interaction between mother and offspring might contribute to enhance the welfare of the offspring and to improve the reproductive efficiency of the cow. However, there is still little information available about such interaction in some cattle breeds.
da Costa, M. J. R. Paranhos +2 more
openaire +3 more sources
Puberty in South American Bos indicus (Zebu) cattle
Animal Reproduction Science, 2004Puberty in Zebu heifers follows a pattern characterized by a decrease in the steroid feedback mechanism and an increase in LH concentration, which result in the first ovulation followed by a short estrous cycle and the onset of normal cycles thereafter. These events are similar to those observed in Bos taurus cattle but occur at a later age.
G P Nogueira
exaly +4 more sources
A comparison of field tick infestation on N'Dama, Zebu and N'Dama×Zebu crossbred cattle
Veterinary Parasitology, 1993Tick burdens, estimated from cumulative tick counts, were determined on N'Dama, Zebu and F1 N'Dama x Zebu crossbred cattle. N'Dama showed significantly fewer ticks than the Zebu and F1 cattle (P < 0.001). A previous trypanosomosis infection did not affect tick burdens on the three genotypes.
R C, Mattioli +4 more
openaire +2 more sources
Pedigree analysis in the Brazilian Zebu breeds
Journal of Animal Breeding and Genetics, 2009SummaryZebu breeds play an important role in cattle production systems in Brazil. To assess the genetic variability from animals in the Herd Books of Nelore, Gir and Guzerat breeds, generation intervals, inbreeding, effective population size and parameters of gene origin (effective number of founders, ancestors and founder genomes) were calculated ...
F J C, Faria +3 more
openaire +2 more sources
Œstrus in Zebu Cattle in Uganda
Nature, 1955DURING investigations into the possibility of artificial insemination of indigenous Zebu and Nganda cattle with homologous semen obtained by electrical stimulation, the œstrous cycles of an experimental group of heifers have been determined, using marked vasectomized bulls.
openaire +2 more sources