Evaluation of F1 cows sired by Brahman, Boran, and Tuli bulls for reproductive, maternal, and cow longevity traits

Journal of Animal Science
Carl T MunteanJames O Sanders

Abstract

This study evaluated reproductive, maternal performance, and longevity traits of 143 F1 cows sired by Brahman (Br), Boran (Bo), or Tuli (T) bulls from Angus or Hereford cows from 1994 to 2011. Cow traits were measured at 7 yr of age in 1999 and 2000 for 1992- and 1993-born cows, respectively. From 2004 to 2010, excluding 2008, incisor condition (solid, broken, smooth) scores were assigned to cows remaining in production; scores were evaluated with two models. Broken and solid mouths were each assigned a score of "1" and smooth assigned "0"; Br-sired (0.76) and Bo-sired cows (0.71) had higher scores (P < 0.05) than T-sired cows (0.54). When solid mouths were scored 1 and smooth and broken scored 0, Br-sired cows (0.34) were higher than T-sired (0.01) (P < 0.05), and Bo-sired (0.23) cows were not different from either (P > 0.05). Age level of the cow within birth year was important for all modeled calf traits (P < 0.05). Birth weights were not different among cow inheritance (P > 0.05). Cow type influenced (P < 0.05) 205-d adjusted weaning weight of calves; Br-sired dams (228.1 ± 2.37 kg) produced the greatest weaning weight, followed by Bo-sired (213.7 ± 3.10 kg), and T-sired (201.6 ± 2.69 kg) dams (P < 0.05). Adjusted means for...Continue Reading

References

May 1, 1991·Journal of Animal Science·R Núñez-DominguezR M Koch
May 26, 1999·Journal of Animal Science·R R Schalles, L V Cundiff
Sep 24, 1999·Journal of Animal Science·J B GaughanK J Rowan

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Citations

Jan 20, 2020·Journal of Animal Science·Reinaldo F CookeJosé L M Vasconcelos
Aug 21, 2021·Frontiers in Genetics·Honghong HuYun Ma

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