Abstract

Fitness traits were assessed in meat goat does sired by Kiko (K), Myotonic (M), Savanna (V) and Spanish (S) bucks. Daughters included crossbred and purebred progeny for each of the sire breeds. Does (n = 216) were semi-intensively managed on humid, subtropical pasture. Measurements (1197 doe-year-time records) were taken on does at breeding, kidding, and weaning. Traits measured included internal parasite burden indicators, litter size profiles, doe survivability, and various whole-herd reproductive values. Sire breed affected ( p < 0.05) nearly all traits recorded. Values for M-sired does were consistently more favorable than V- sired does across the fitness traits studied. The K- and S-sired does were moderate in performance. Does sired by K tended to separate from the V-sired does more so than S-sired does. The K- and S-sired does did not separate from M-sired does for any whole herd reproductive trait or survival. More work is needed to better understand the relative values of Savanna and the other breeds as sires for producing meat goat herd replacement does. Keywords: meat goats, sire breed, crossbreeding, fitness

Richard Browning, Maria Leite-Browning, Emily Hayes

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Electronic Poster Session - Species - Caprine, , 962, 2018
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