Impact of Inbreeding and Ancestral Inbreeding on Longevity Traits in German Brown Cows.

ABSTRACT: A recent study on the population structure of the German Brown population found increasing levels of classical and ancestral inbreeding coefficients. Thus, the aim of this study was to determine the effects of inbreeding depression and purging on longevity traits using classical and ancestral inbreeding coefficients according to Kalinowski (2002) (F_{a_Kal}, F_New), Ballou (1997) (F_{a_Bal}), and Baumung (2015) (Ahc). For this purpose, uncensored data of 480,440 cows born between 1990 and 2001 were available. We analyzed 17 longevity traits, including herd life, length of productive life, number of calvings, lifetime and effective lifetime production for milk, fat, and protein yield, the survival to the 2nd, 4th, 6th, 8th, and 10th lactation number, and the cullin

SUBMITTER: Wirth A 

PROVIDER: S-EPMC10486702 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature