Effects of Feeding Supplemental Fat During Gestation to First-Calf Beef Heifers

Effects of Feeding Supplemental Fat During Gestation to First-Calf Beef Heifers

Study 1, pregnant crossbred, first-calf heifers (n = 149; BW 493.8 ± 6.3) received gestation diets: control (CON), or added safflower seeds (SAFF), raw soybeans (SOY), or sunflower seeds (SUN). Diets were formulated isocaloric-isonitrogenous, contained 2.4, 4.7, 3.8, or 5.1% fat, and were fed for th...

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Veröffentlicht in:The Professional animal scientist 2001-06, Vol.17 (2), p.81-89
Hauptverfasser: Bellows, R.A., Grings, E.E., Simms, D.D., Geary, T.W., Bergman, J.W.
Format: Artikel
Sprache:eng
Schlagworte:
animal reproduction
Beef Cattle
calves
cattle feeding
dams (mothers)
dietary fat
Fat Supplementation
fat supplements
feed supplements
Gestation
heifers
lipid content
maternal nutrition
pregnancy rate
Reproduction
safflower seed
soybeans
sunflower seed
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Zusammenfassung:Study 1, pregnant crossbred, first-calf heifers (n = 149; BW 493.8 ± 6.3) received gestation diets: control (CON), or added safflower seeds (SAFF), raw soybeans (SOY), or sunflower seeds (SUN). Diets were formulated isocaloric-isonitrogenous, contained 2.4, 4.7, 3.8, or 5.1% fat, and were fed for the last 65.3 ± 4.6 d precalving. Supplemental fat feeding was terminated at calving. Diet effects on dam BW or condition scores and calf birth BW, calving difficulty, and dam estrous cyclicity were generally nonsignificant (P>0.10). Fat-supplemented dams had greater pregnancy rates (P
ISSN:1080-7446
1525-318X
DOI:10.15232/S1080-7446(15)31602-8