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Table 1 Descriptive statistics for the studied Swedish cattle breeds

From: Signatures of selection reveal candidate genes involved in economic traits and cold acclimation in five Swedish cattle breeds

Breed N samples Type (distribution) Characteristic Citation
FNC 16 Native (north) Smaller body size than the Fjäll breed; lower milk yield; said to be hardy and hold strong ability to find food in natural pastures [16]
SMC 23 Native (north) Small body size of cows about 400-450 kg; said to be hardy and hold strong ability to find food in natural pastures [16]
SHF 24 Commercial (south) The old Friesian type was more of a dual-purpose; the SHF is a commercial dairy breed with live weight of cows around 700 kg [16]
SRC 25 Commercial (south middle to south) A commercial dairy breed; live weight of cows 550–650 kg [16]
SRP 18 Native (middle) The focus is on conservation; said to be hardy; live weight of cows 350–600 kg [16]
  1. Breed: FNC (Fjällnära Cattle), SMC (Fjäll also known as Swedish Mountain Cattle), SHF (Swedish Holstein–Friesian), SRC (Swedish Red Cattle), SRP (Swedish Red Polled)
  2. N samples: number of genotyped samples (i.e. before data quality control); note that according to data quality control, four samples (due to animal call-rate < 0.95) were removed, and principal component (PC) analyses, three samples (due to locating outside their expected breed cluster) were removed; resulting in 99 individuals for analyses of selection signatures