Boron supplementation of a semipurified diet for weanling pigs improves feed efficiency and bone strength characteristics and alters plasma lipid metabolites

被引:97
作者
Armstrong, TA
Spears, JW
Crenshaw, TD
Nielsen, FH
机构
[1] N Carolina State Univ, Dept Anim Sci, Raleigh, NC 27695 USA
[2] N Carolina State Univ, Interdept Nutr Program, Raleigh, NC 27695 USA
[3] Univ Wisconsin, Dept Anim Sci, Madison, WI 53706 USA
[4] USDA ARS, Grand Forks Human Nutr Res Ctr, Grand Forks, ND 58202 USA
关键词
boron; bone; cholesterol; triglycerides; pigs;
D O I
10.1093/jn/130.10.2575
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Two experiments were conducted to determine effects of dietary boron (B) on performance, plasma minerals and metabolites, and bone characteristics in young pigs. In Experiment 1, 48 pigs (24 males, 24 females; 21 d old) were allotted to pens, which were randomly assigned to one of the following dietary treatments: I) control (natural ingredient diet; 6.7 mg B/kg diet), 2) control + 5 mg B/kg diet and 3) control + 15 mg B/kg diet. Boron was supplemented as sodium berate, In Experiment 2, 48 pigs (24 males, 24 females; 21 d old) were assigned to the same treatments described in Experiment 1; however, the basal diet was a semipurified diet (0.98 mg B/kg diet). Diets were fed for 40 d; on d 40, blood samples were obtained for determination of plasma mineral and metabolite concentrations. Femurs were harvested from 8 pigs per treatment on d 40 for determination of mechanical properties, ash and lipid percentage. In Experiment 1, B did not affect performance, plasma minerals or metabolites or bone properties. In Experiment 2, B supplementation improved (P < 0.05) the gain:feed ratio and increased plasma cholesterol and triglyceride concentrations. There was a treatment x sex interaction (P < 0.05) in Experiment 2 for bone lipid to be lower and bending moment to be higher, with the response occurring in male pigs. Other dependent variables in Experiment 2 were not affected by treatment. In conclusion, B supplementation of a low B diet elicited responses of physiologic importance to pigs, However, B supplementation of a natural ingredient diet did not elicit a response.
引用
收藏
页码:2575 / 2581
页数:7
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