Heredity of fertility traits in progeny test of Holstein-Friesian bulls Djedovic, R., Poljoprivredni fakultet, Beograd - Zemun (Serbia); Latinovic, D., Poljoprivredni fakultet, Beograd - Zemun (Serbia); Bogdanovic, V., Poljoprivredni fakultet, Beograd - Zemun (Serbia) ...
Biotechnology in Animal Husbandry (Serbia),
(2004), Letnik:
20, Številka:
5-6
Journal Article
Recenzirano
Estimation of additive genetic value in relation on total phenotypic value of fertility traits is very important for breeding value estimation of bull-sires. Heritabilities of traits were calculated ...using the sample of 7024 calves. They were progenies of 51 bull-sires which were raised on 14 farms during 6 years. Heritabilities coefficients were 0.225 for type of calving; 0.027 for mortality of calves; 0.102 for body weight of calves, and 0.214 for duration of pregnancy.
The National Rotavirus Reference Centre together with collaborating laboratories Australia-wide has conducted rotavirus surveillance since June 1999. This report describes the serotypes of rotavirus ...strains responsible for the hospitalisation of children with acute gastroenteritis during the period 1 July 2005 to 30 June 2006. Eight hundred and forty-eight faecal samples from across Australia were examined using monoclonal antibody immunoassays, reverse transcription-polymerase chain reaction and polyacrylamide gel analysis. Serotype G1 was the dominant serotype nationally, representing 40.2 per cent of all strains, followed by serotype G4 (22.6%), serotype G9 (15.1%) and serotype G3 (14.7%). Genotype G12 strains were identified for the first time in Australia. As in previous years, there was substantial geographic variation in the prevalence of rotavirus serotypes.
The regulation of COL 1A1 gene expression in bone was studied by measuring the activity of type I collagen promoter fusion genes (ColCAT) in permanently transfected osteoblastic cells and calvariae ...from transgenic animals. The basal activity of ColCAT fusion genes in transfected cells is mediated by DNA sequences between -3.5 to -2.3 kb while expression in vivo requires sequences between -2.3 and -1.7 kb. Parathyroid hormone, 1,25-dihydroxyvitamin D3 and interleukin-1 decrease the activity of ColCAT fusion genes in osteoblastic cells and transgenic calvariae. Because there may be differences between the expression of ColCAT fusion genes in cultured cells and intact bone, it will be important to compare data obtained from transfected cells with an in vivo model such as calvariae from transgenic mice.
The National Rotavirus Reference Centre together with collaborating laboratories Australia-wide has conducted rotavirus surveillance since June 1999. This report describes the serotypes of rotavirus ...strains responsible for the hospitalisation of children with acute gastroenteritis during the period 1 July 2004 to 30 June 2005. Six hundred and twelve faecal samples from across Australia were examined using monoclonal antibody immunoassays, reverse transcription-polymerase chain reaction and polyacrylamide gel analysis. Serotype G1 was the dominant serotype nationally, representing 48.3 per cent of all strains, followed by serotype G3 (36.7%) and serotype G9 (6.9%). As in previous years, there was substantial geographic variation in the prevalence of rotavirus serotypes.
The protection and improvement of environment is one of the most important processes which requires different aspects of management and knowledge, and which has extensive consequences on survival of ...mankind. Today contemporary trends as well as the way of operating and of communicating require a modern manager who will in addition to solving economical problems have to be familiar with the problems of environment as well.
