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Table 6 Heritability estimates for fertility traits in dairy cattle worldwide1

From: Validation of 46 loci associated with female fertility traits in cattle

Country(s) Citation2 Trait3 Breed(s) h 2
Austria, Germany, and Luxembourg 6 NRH Holstein, Jersey, Red Dairy Cattle 0.012
Austria, Germany, and Luxembourg 52 FSh Holstein, Jersey, Red Dairy Cattle 0.014
Canada 6 NRH Brown Swiss, Guernsey, Holstein 0.015
Czech Republic 6 CRa Holstein 0.039
Denmark, Finland, and Sweden 6 CRb Holstein 0.01
Flanders and Netherlands 6 NRH All breeds 0.018
France 6 HCO Brown Swiss, Holstein 0.02
Iran 54 INSa Holstein 0.046
Israel 55 HCRa Holstein 0.0207
Italy 56 INSb Brown Swiss 0.026
Norway 5 NRH Norwegian Red Cattle 0.01
Poland 6 NRH Holstein 0.019
Switzerland 6 NRH Holstein 0.013
United States 6 HCRb Aryshire, Brown Swiss, Guernsey, Holstein, Jersey, Milking Shorthorn 0.01
United States 57 HCRb Holstein 0.04
United States 10 HCRc Brown Swiss, Holstein, Jersey 0.01
United States Current Study HCRa Holstein 0.61
  1. 1Represents a sampling of studies that report heritability estimates for fertility traits
  2. 2Citations are numbered as they appear in the literature cited
  3. 3Abbreviations for traits tested: CRa and HCO is conception rate for up to 3 services for maiden heifers, CRb is conception rate for maiden heifers for an undefined number of services, FSh is the interval from first to successful insemination which ranged from 0 to 600 days, INSa is the number of inseminations to conception for up to 9 services in maiden heifers, INSb is the number of inseminations to conception with number of services unreported, HCRa is the number of services to achieve conception for up to 5 services for maiden heifers, HCRb is the number of services to achieve conception for up to 7 services for maiden heifers, HCRc is the number of services to achieve conception and is undefined, and NRH is the nonreturn rate of 56 days in maiden heifers