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.: Home > Animal Science Papers and Reports > 2004 > Volume 22 Number 2 > Andrzej Dybus1*, Wilhelm Grzesiak1,2, Iwona Szatkowska1, Piotr B³aszczyk1,2

Association between the growth hormone combined genotypes and dairy traits in Polish Black-and-White cows

Andrzej Dybus1*, Wilhelm Grzesiak1,2, Iwona Szatkowska1, Piotr B³aszczyk1,2
1 Department of Ruminant Science, Agricultural University of Szczecin, Doktora Judyma 12, 71-460, Szczecin, Poland 2 Laboratory of Biostatistics, Agricultural University of Szczecin, Doktora Judyma 12, 71-460, Szczecin, Poland
Abstract :

Associations were analysed between the bovine growth hormone combined genotypes (GH/AluI-MspI) and milk production traits in a total of 900 Polish Black-and-White (Polish Friesian) cows. PCR-RFLP method was used for genotyping. The following were frequencies of GH/AluI-MspI: 0.463 LL/++, 0.276 LV/++, 0.157 LL/+-, 0.059 LV/+-, 0.025 VV/++, 0.019 LL/-- and 0.001 (only 1 observation) of VV/+-. Significant differences were found in analysed dairy traits between cows of different GH/AluI-MspI combined genotypes. It is difficult, however, to trace a defined trend in all lactations, what to some extent complicates the inference. It is concluded that introducing the information on GH/AluI-MspI into dairy cattle marker-assisted selection (MAS) programmes would be risky.

Keywords :
cattle / dairy traits / genotyping / growth hormone / PCR-RFLP

Date Deposited : 11 Aug 2011 10:24

Last Modified : 11 Aug 2011 10:24

Official URL: http://www.ighz.edu.pl/

Volume 22, Number 2, - 2004

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