Zobrazeno 1 - 10
of 172
pro vyhledávání: '"R.R. Schalles"'
Autor:
J.B. Jr. Glaze, R.R. Schalles
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :73-76
Performance records of 1459 Polled Hereford cattle were analyzed to estimate heritabilities and genetic correlations of beef cattle traits from birth to maturity. Estimates of heritability (h) for birth weight (BWT), weaning weight (WWT), yearling we
Autor:
J.B. Jr. Glaze, R.R. Schalles
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :77-80
Direct and correlated responses to selection for improved feed conversion were estimated from performance records of 1459 Polled Hereford cattle born from the spring of 1967 through the spring of 1979. Data were analyzed using a multiple-trait, deriv
Publikováno v:
Journal of Animal Science. 71:2623-2630
Data from 2,101 Brangus calves born from 1986 to 1990 were analyzed with a REML procedure using a derivative-free algorithm in a mixed linear animal model to obtain variance component estimates of ultrasound-measured longissimus muscle area and fat t
Autor:
P.L. Houghton, John A. Unruh, R.R. Schalles, W. Olson, Larry R. Corah, Michael E. Dikeman, D.N. Waldner
Publikováno v:
Journal of Animal Science. 70:3044-3054
Sixty Brangus bulls were evaluated live using two real-time ultrasound instruments and four technicians to estimate longissimus muscle area (LMA) and 12th rib fat thickness (FT) every 4 mo beginning at 4 and 12 mo of age, respectively, and continuing
Publikováno v:
Journal of Animal Science. 70:379-385
Our objectives were to investigate the effects of genotype, yield and composition of milk, and changes in BW and body condition on the initiation of cyclic ovarian activity in nonsuckled beef and dairy cows milked twice daily. Nulliparous heifers wer
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :98-101
Feedlot performance of 207 steers with various percentages of Angus, Hereford, Charolais, Brahman, and Gelbvieh breeding were compared at a constant 1) days fed, 2) adjusted carcass backfat, and 3) slaughter weight. As the percentage of Angus, Herefo
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :41-44
Eighty nine steers with different proportions of Angus, Hereford, Charolais, Brahman, and Gelbvieh breeding from rotational and terminal crossbreeding systems were produced in Louisiana and finished at KSU. Half of each breed group was placed in the
Autor:
D.N. Waldner, R.R. Schalles, W. Olson, L.R. Corah, P.L. Houghton, Michael E. Dikeman, John A. Unruh
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :16-20
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :64-68
Publikováno v:
Kansas Agricultural Experiment Station Research Reports. :35-37