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Research Article

Relationship bewteen the leptin gene polymorphism and the productivity and health traits in Holstein-Fresian cattle

Agata Maruszak¹, Piotr Sablik ¹, Ewa Januś ² , Andrzej Dybus ³

¹Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology Szczecin, Janickiego 33, 71-270 Szczecin, Poland

²University of Life Sciences in Lublin, Department of Cattle Breeding and Genetic Resources Conservation, Laboratory for Organic Production of Food of Animal Origin, Akademicka 13, 20-950 Lublin, Poland

³Department of Genetics, West Pomeranian University of Technology, Szczecin, Aleja Piastów 45, 70-311 Szczecin, Poland

1. Acta Sci. Pol. Zootechnica, 22(4), 2023, 55‒62
2. DOI: 10.21005/asp.2023.22.4.06

Abstract. The aim of this study was to analyse the relationship between the leptin gene and the productivity of Polish HF cattle as well as their functional traits (health). The study was conducted on a sample chosen from one of the West-Pomeranian farms. The lowest percentage of pathogenic disease (mastitis, endometritis) was recorded in the cattle with CT genotype for leptin, whilst cows with TT genotype had fewest metabolic diseases. The study found that the TT cattle were significantly more efficient (P ≤ 0.01; P ≤ 0.05) than other groups in value and energy corrected milk (VCM and ECM) as well as in milk fat and protein yields in their first lactation.

Keywords: leptin, dairy cattle, productivity and health traits, diseases, Holstein-Fresian cattle