Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, People's Republic of China.
Biol Trace Elem Res. 2013 Jul;154(1):55-61. doi: 10.1007/s12011-013-9699-3. Epub 2013 May 19.
The objective of this study was to determine the effects of supplemental chromium as chromium picolinate (CrPic) on productive performance, chromium (Cr) concentration, serum parameters, and colostrum composition in sows. Thirty Yorkshire sows were bred with semen from a pool of Landrace boars. The sows were equally grouped and treated with either a diet containing 0 (control) or 400 ppb dietary Cr supplementation throughout gestation. The sows received the same basal diet based on corn-DDGS meal. Supplemental CrPic increased (P < 0.05) the sow body mass gain from the insemination to the day 110 of gestation in sows. No differences (P > 0.50) were observed in the gestation interval, sow mass, and backfat at insemination, after farrowing, at weaning and lactation loss. The number of piglets born alive, piglets per litter at weaning, and litter weaned mass were increased (P < 0.05) for those supplemented with CrPic compared with the control. However, the total number of piglets born, total born litter mass, average piglet birth body mass, born alive litter mass, and average born alive piglet mass did not differ among the treatments (P > 0.05). The placental masses of sows were similar among treatments (P > 0.05). Dietary supplementation with CrPic throughout gestation in sows showed increased (P < 0.01) concentration of Cr in the colostrum or serum at days 70 and 110. Compared with the control group, dietary supplementation with CrPic throughout gestation in sows decreased (P < 0.05) the serum insulin concentration, the glucose or serum urea nitrogen concentration at days 70 and 110. However, no differences (P > 0.05) were observed in total protein concentration among treatments. No differences (P > 0.05) were observed in total solids, protein, fat or lactose among sows fed the diets supplemented with CrPic compared with the control. This exciting finding provides evidence for an increase in mass gain and live-born piglets in sows supplemented with CrPic throughout gestation.
本研究旨在确定补充吡啶甲酸铬（CrPic）作为铬源对母猪生产性能、铬浓度、血清参数和初乳成分的影响。30 头约克夏母猪用长白公猪的精液配种。母猪被平均分组，在整个妊娠期分别用含 0（对照）或 400ppb 日粮铬补充的日粮处理。母猪接受相同的基于玉米-DDGS 日粮的基础日粮。与对照组相比，补充 CrPic 增加了（P<0.05）妊娠至第 110 天的母猪体重增加。妊娠期间隔、母猪体重和配种时背膘厚、分娩后、断奶时和哺乳期损失没有差异（P>0.50）。与对照组相比，补充 CrPic 的母猪产活仔数、断奶窝仔数和断奶窝重增加（P<0.05）。然而，总产仔数、总产仔窝重、平均初生仔猪体重、产活仔窝重和平均产活仔体重在处理之间没有差异（P>0.05）。母猪胎盘重量在处理之间相似（P>0.05）。母猪在整个妊娠期补充 CrPic 增加了（P<0.01）第 70 天和第 110 天初乳或血清中的铬浓度。与对照组相比，母猪在整个妊娠期补充 CrPic 降低了（P<0.05）第 70 天和第 110 天血清胰岛素浓度、血糖或血清尿素氮浓度。然而，处理之间总蛋白浓度没有差异（P>0.05）。与对照组相比，补充 CrPic 的母猪的总固体、蛋白质、脂肪或乳糖没有差异（P>0.05）。这一令人兴奋的发现为在整个妊娠期补充 CrPic 的母猪体重增加和产活仔猪数量增加提供了证据。
