Effects of adding sunflower or soybean seeds on heifers feedlot performance.
In: Journal of Animal Science, Jg. 84 (2006-08-02), S. 69-70
academicJournal
Zugriff:
The objective of this trial was to evaluate dietary effects on heifers performance fed with different proportions of sunflower or whole raw soybean seed. One hundred and five Angus heifers (147±19 kg) were used in a randomized complete block design. The lipid supplementation treatments, applied for 125 d., were: no oilseeds (CON), sunflower seed at 4% (LSF), at 6% (MSF), and at 8% (HSF), soybean seed at 15% (LSB), at 20% (MSB), and at 25% (HSB) on a dry matter basis. Diets were formulated to be isonitrogenous (15% CP) and isocaloric (2.5 ME Mcal/kg). All diets consisted of corn silage, whole corn, sunflower meal and urea. Feed intake (DMI) was recorded daily and animals were weighed at the start and end of the trial and at two week intervals to obtain live weight gain (LWG). Ultrasound backfat (SBF) was measured to estimate fat deposition rate (FDR). The results of the least square means comparisons are shown on the table. Control had higher (P<0.05) DMI, LWG and FDR than sunflower and soybean treatments, and higher (P<0.05) FE than soybean treatments, but not different than sunflower treatments. Sunflower treatments had higher (P<0.05) DMI and LWG than soybean treatments; FE was better (P<0.05) for soybean treatments, and there were no difference in FDR between oilseeds. Increasing the proportion of sunflower in the diet caused a linear decrease in the DMI (P=0.02) and a quadratic effect for LWG (P=0.05), but no response in the FE and FDR. The soybean showed a linear effect for FE (P=0.03) only. [ABSTRACT FROM AUTHOR]
Titel: |
Effects of adding sunflower or soybean seeds on heifers feedlot performance.
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Autor/in / Beteiligte Person: | Navarro, J. A. ; Santini, F. J. ; Depetris, G. J. ; Villarreal, E. L. ; Rearte, D. H. |
Zeitschrift: | Journal of Animal Science, Jg. 84 (2006-08-02), S. 69-70 |
Veröffentlichung: | 2006 |
Medientyp: | academicJournal |
ISSN: | 0021-8812 (print) |
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