scholarly journals The effect of the Robertsonian translocation 1/29 on the fertility of beef cattle reared under extensive conditions: a 30 years retrospective study

2021 ◽  
Author(s):  
J.M. Jiménez ◽  
R. Morales ◽  
A. Molina ◽  
M. Moreno‐Millán ◽  
S. Demyda Peyrás
Keyword(s):  
Retrospective Study ◽  
Beef Cattle ◽  
Robertsonian Translocation

An eight-year retrospective study of hydatid disease (Echinococcus granulosus sensu stricto) in beef cattle slaughtered at an Australian abattoir

2019 ◽  
Vol 173 ◽  
pp. 104806 ◽  
Author(s):  
Cara S. Wilson ◽  
David J. Jenkins ◽  
Victoria J. Brookes ◽  
Tamsin S. Barnes
Keyword(s):  
Retrospective Study ◽  
Beef Cattle ◽  
Echinococcus Granulosus ◽  
Hydatid Disease ◽  
Sensu Stricto ◽  
Echinococcus Granulosus Sensu Stricto

IMPACT OF A 1;29 ROBERTSONIAN TRANSLOCATION ON A HERD OF PUREBRED BEEF CATTLE

1989 ◽  
Vol 69 (4) ◽  
pp. 891-896 ◽  
Author(s):  
SHEILA M. SCHMUTZ ◽  
JANE MOKER
Keyword(s):  
Beef Cattle ◽  
X Chromosome ◽  
Robertsonian Translocation ◽  
Management Practices ◽  
Negative Impact ◽  
Translocation Carrier ◽  
Maternal Grandfather ◽  
Charolais Cattle ◽  
Embryonic Loss ◽  
Beef Herd

This paper examines the spread and influence of a 1;29 Robertsonian translocation in a purebred beef herd. An entire herd of 94 Charolais cattle has been karyotyped since discovery of a 1;29 Robertsonian translocation in two yearling bulls entered in the Saskatoon R.O.P. bull test station in 1987. The translocation was inherited through their maternal grandfather. Approximately 46% (43) of the 94 cattle karyotyped possessed this translocation, including one cow which had two copies (58, XX, tt). The test herd consisted of 59 cows, 4 bulls, and 31 calves with 27, 2, and 14 animals affected respectively. In addition one cow with an additional X chromosome was detected (61, XXX). The overall fertility of this herd had been low but alterations in management practices lessened the negative impact. Prolonged bull exposure, first exposure of females at 2 y of age, and continued surveillance of cows returning to heat followed by rebreeding ensured that most cows did produce calves in most years. However, although such practices reduced the culling rate, they maintained the translocation carrier cows in the herd. Key words: Beef cattle, translocation, embryonic loss, subfertility

Incidence and inheritance of the 1/29 and 14/20 Robertsonian translocations in Canadian beef cattle

Genome ◽  
1987 ◽  
Vol 29 (3) ◽  
pp. 504-509 ◽  
Author(s):  
J. McWhir ◽  
R. B. Church ◽  
G. H. Coulter ◽  
C. C. Lin
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Robertsonian Translocation ◽  
Heterozygous Carrier ◽  
Metaphase Chromosomes ◽  
Robertsonian Translocations ◽  
Peripheral Leukocyte ◽  
Heterozygous Male ◽  
Natural Service

Metaphase chromosomes were prepared from peripheral leukocyte cultures of 253 beef animals representing 21 breeds. A total of 10 Robertsonian translocations were identified. Nine were 1/29 fusions and one was a stable 14/20 fusion identified in several Simmentals. To our knowledge, the only other case of this translocation reported was also in the Simmental breed, suggesting that this fusion may be unique to the breed. A further 54 relatives of known 1/29 and 14/20 carriers were examined, revealing that both fusions were inherited by 50% of offspring of the heterozygous carrier. Heterozygous male 1/29 carriers left fewer calves than karyotypically normal bulls when used in natural service. Key words: Robertsonian translocation, cattle, chromosomes, fertility.

scholarly journals Hypomagnesemia in beef cattle from the central region of Argentina: retrospective study

2022 ◽  
Vol 52 (4) ◽  
Author(s):  
Germán José Cantón ◽  
Eduardo Luján Fernández ◽  
Juan Ignacio Poo ◽  
Ernesto Juan Alfredo Späth ◽  
Ernesto Raúl Odriozola ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Beef Cattle ◽  
Dietary Intake ◽  
Central Region ◽  
Metabolic Disorder ◽  
Economic Losses ◽  
Physiological Status ◽  
Metabolic Factors ◽  
The Past ◽  
Beef Herds

ABSTRACT: Hypomagnesaemia (grass tetany) is a metabolic disorder of ruminants due to a reduced dietary intake of magnesium (primary deficiency), incorrect digestibility or associated metabolic factors reducing Mg intake (secondary deficiency). Grass tetany is a production disease responsible for important economic losses in beef herds from Argentina. Several factors influence the development of grass tetany in cattle, including physiological status, weather, soil and forage. This research described a retrospective analysis over the past 20 years, revising the cases of beef cattle clinical hypomagnesaemia registered at the Veterinary Diagnostic Service in INTA Balcarce, Argentina.

Effects of Ovum Pick-up Frequency and FSH Stimulation: A Retrospective Study on Seven Years of Beef Cattle In Vitro Embryo Production

2008 ◽  
Vol 43 (2) ◽  
pp. 239-245 ◽  
Author(s):  
R De Roover ◽  
JMN Feugang ◽  
PEJ Bols ◽  
G Genicot ◽  
Ch Hanzen
Keyword(s):  
Retrospective Study ◽  
Beef Cattle ◽  
Embryo Production ◽  
In Vitro Embryo Production

Postoperative hyperthermia in cats treated with Simbadol or morphine: a retrospective study

2020 ◽  
Vol 47 (6) ◽  
pp. 855.e3
Author(s):  
C. Cannarozzo ◽  
P. Kirch ◽  
L. Campoy ◽  
R. Gleed ◽  
M. Martin-Flores
Keyword(s):  
Retrospective Study

Retrospective Study Shows Hypothyroidism Tied to Lower Breast Ca Risk

Ob Gyn News ◽  
2005 ◽  
Vol 40 (8) ◽  
pp. 6
Author(s):  
Christine Kilgore
Keyword(s):  
Retrospective Study

Abstract #1059 Prognostic Factors of Metastatic Thyroid Carcinoma: A Single Center Retrospective Study

2018 ◽  
Vol 24 ◽  
pp. 249
Author(s):  
David Broome ◽  
Gauri Bhuchar ◽  
Ehsan Fayazzadeh ◽  
James Bena ◽  
Christian Nasr
Keyword(s):  
Prognostic Factors ◽  
Retrospective Study ◽  
Thyroid Carcinoma ◽  
Single Center

Abstract #316: Reproductive Life Following Spinal Cord Injury: A Retrospective Study

2006 ◽  
Vol 12 ◽  
pp. 65
Author(s):  
Ghasak Mahmood ◽  
Sylvia J. Shaw ◽  
Yaga Szlachick ◽  
Rod Atkins ◽  
Stefan Bughi
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Retrospective Study ◽  
Cord Injury ◽  
Reproductive Life
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