EJPAU 2013. Czerniawska-Piątkowska E. , Szewczuk M. , Chociłowicz E. , Cioch B. THE COMPARISON OF YIELD, NUTRITIVE VALUE AND TECHNOLOGICAL USEFULNESS OF MILK FROM HOLSTEIN-FRIESIAN COWS OF BLACK-AND-WHITE STRAIN DEPENDING ON THE IGFI/SnaBI AND IGF1R/HinfI POLYMORPHISMS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2013
Volume 16
Issue 3

Topic:

Animal Husbandry

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Czerniawska-Piątkowska E. , Szewczuk M. , Chociłowicz E. , Cioch B. 2013. THE COMPARISON OF YIELD, NUTRITIVE VALUE AND TECHNOLOGICAL USEFULNESS OF MILK FROM HOLSTEIN-FRIESIAN COWS OF BLACK-AND-WHITE STRAIN DEPENDING ON THE IGFI/SnaBI AND IGF1R/HinfI POLYMORPHISMS, EJPAU 16(3), #05.
Available Online: http://www.ejpau.media.pl/volume16/issue3/abs-05.html

THE COMPARISON OF YIELD, NUTRITIVE VALUE AND TECHNOLOGICAL USEFULNESS OF MILK FROM HOLSTEIN-FRIESIAN COWS OF BLACK-AND-WHITE STRAIN DEPENDING ON THE IGFI/SNABI AND IGF1R/HINFI POLYMORPHISMS

Ewa Czerniawska-Piątkowska, Małgorzata Szewczuk, Ewa Chociłowicz, Barbara Cioch
Department of Ruminant Science, West Pomeranian University of Technology in Szczecin

ABSTRACT

The aim of this study was to determine the frequency of the polymorphic variants of the IGFI/SnaBI and IGF1R/HinfI genes in the analyzed herd of Holstein-Friesian cows of Black-and-White strain and to compare the yield, concentration of protein fraction components as well as selected technological parameters of milk. For the IGFI/SnaBI polymorphism in the studied herd of dairy cows, the higher frequency of allele A (0.660) was found compared with allele B (0.340). In the analyzed group of cows, the BB individuals were not found. For the IGF1R/HinfI polymorphism, the AB heterozygotes (52%) predominated over the BB homozygotes (48%). No cows with the AA genotype were found. In the studied population, a higher frequency of allele B (0.740) than that of allele A (0.260) was observed. The cows with the IGFI/SnaBI AB genotype were characterized by higher milk, fat and protein yield than were cows with the AA genotype, whereas the AA genotype was associated with a higher protein (P ≤ 0.05), fat and lactose content in milk. On the other hand, the analyzed IGF1R/HinfI polymorphism affected milk, FCM, fat and protein yield as well as percentage of fat (P ≤ 0.05), protein and lactose in milk, favoring the BB genotype. The analysis of the selected technological parameters of milk in HF cattle with regard to the IGFI/SnaBI and IGF1R/HinfI polymorphisms showed that the milk from cows with the IGF1R/HinfI BB genotype was characterized by a higher casein and solids-not-fat content compared with the remaining analyzed cow genotypes (AB and AA).

Key words: milk, Holstein-Friesian breed, technological parameters, IGFI/SnaBI and IGF1R/HinfI.

Ewa Czerniawska-Piątkowska
Department of Ruminant Science, West Pomeranian University of Technology in Szczecin
Doktora Judyma 10
71-460 Szczecin
Poland
email: Ewa.Czerniawska-Piatkowska@zut.edu.pl

Małgorzata Szewczuk
Department of Ruminant Science, West Pomeranian University of Technology in Szczecin
Doktora Judyma 10
71-460 Szczecin
Poland

Ewa Chociłowicz
Department of Ruminant Science, West Pomeranian University of Technology in Szczecin
Doktora Judyma 10
71-460 Szczecin
Poland

Barbara Cioch
Department of Ruminant Science, West Pomeranian University of Technology in Szczecin
Doktora Judyma 10
71-460 Szczecin
Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.