Influence of grain type, tallow level, and tallow feeding system on feedlot cattle performance
Two experiments were conducted to evaluate the effects of grain type, tallow level, and tallow feeding system on finishing steer performance. Experiment 1 involved 256 yearling steers (359 kg) in a 4 X 2 factorial arrangement of treatments. Steers were assigned randomly to one of four tallow feeding...
Gespeichert in:
Veröffentlicht in: | Journal of animal science 1995-10, Vol.73 (10), p.2916-2921 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Two experiments were conducted to evaluate the effects of grain type, tallow level, and tallow feeding system on finishing steer performance. Experiment 1 involved 256 yearling steers (359 kg) in a 4 X 2 factorial arrangement of treatments. Steers were assigned randomly to one of four tallow feeding systems: 1) 0% tallow fed throughout the experiment; 2) 4% tallow fed throughout the experiment; 3) 0% tallow fed d 1 through 33 and then 4% tallow fed until slaughter; and 4) 4% tallow fed d 1 through 33 and then 0% tallow fed until slaughter. Tallow treatments were applied to diets containing either dry-rolled corn (DRC) or high-moisture corn (HMC). No fat treatment X grain type interaction (P 0.10) was observed. Steers fed 4% tallow throughout the experiment, only during d 1 through 33, or only during d 34 until slaughter were more (P 0.10) efficient than steers fed 0% tallow. No differences in DMI or ADG were observed (P 0.10). In Exp. 2, 120 large-framed steer calves (286 kg) were blocked by weight and allotted randomly within block to one of three treatments consisting of the addition of 0, 2, or 4% tallow added d 1 and fed for 197 d. Feed efficiency of calves increased linearly (P 0.05) with increasing tallow level. Daily gain was not different (P 0.10), but DMI decreased linearly (P 0.05) with increasing tallow level. This research indicates that tallow added during or after grain adaptation to DRC- or HMC-based diets fed to yearling steers will result in similar improvement in feed efficiency, and that including up to 4% tallow to diets fed to large-framed calves can significantly improve feed efficiency |
---|---|
ISSN: | 0021-8812 1525-3163 0021-8812 |
DOI: | 10.2527/1995.73102916x |