Anderson L E, Myer R O, Brendemuhl J H, McDowell L R
Department of Animal Science, University of Florida, Gainesville 32611, USA.
J Anim Sci. 1995 Apr;73(4):1093-8. doi: 10.2527/1995.7341093x.
A study was conducted to evaluate the effects of high dietary vitamin A on vitamin E status and performance of growing-finishing pigs fed diets supplemented with varying levels of vitamin E. Treatments consisted of corn-soybean meal-based diets supplemented with retinyl acetate to provide 2,000 or 20,000 IU of vitamin A/kg of diet and with DL-alpha-tocopheryl acetate to provide 0, 15, or 150 IU of added vitamin E/kg in a 2 x 3 factorial arrangement. The trial involved 84 crossbred pigs (26 kg initial BW) allotted to pens of two pigs each (one gilt, one barrow). Serum was obtained from all pigs on d 0, 3, 7, 21, 35, 63, and 77 of the 83- or 90-d feeding period. Tissue samples (liver, leg, and neck muscle, backfat, and leaf fat) were collected from one pig (barrow) in each pen at the end of the feeding period. Average daily gain and gain:feed were .93 kg and .30, respectively, without treatment differences (P > .10). Serum alpha-tocopherol increased linearly (P < .01) by d 3 with increasing level of dietary vitamin E supplementation. High dietary vitamin A resulted in a small decrease (P < .01) in serum alpha-tocopherol on d 3, but serum alpha-tocopherol concentration was not affected (P > .10) on other days. Tissue alpha-tocopherol increased linearly (P < .001) as dietary vitamin E increased in all tissues examined. No consistent evidence was found to indicate that a high level of dietary vitamin A interfered with performance or with blood serum or tissue alpha-tocopherol concentrations in growing-finishing swine.
开展了一项研究，以评估高剂量日粮维生素A对生长育肥猪维生素E状况以及对采食添加不同水平维生素E日粮的生长育肥猪生产性能的影响。试验处理包括以玉米-豆粕为基础的日粮，添加醋酸视黄酯以提供2000或20000 IU/kg日粮的维生素A，以及添加DL-α-生育酚醋酸酯以提供0、15或150 IU/kg的额外维生素E，采用2×3析因设计。该试验涉及84头杂交猪（初始体重26 kg），每栏分配2头猪（1头小母猪、1头阉公猪）。在83天或90天的饲喂期的第0、3、7、21、35、63和77天，采集所有猪的血清。在饲喂期结束时，从每栏的1头猪（阉公猪）采集组织样本（肝脏、腿部和颈部肌肉、背膘和板油）。平均日增重和增重：饲料比分别为0.93 kg和0.30，各处理间无差异（P>0.10）。随着日粮维生素E添加水平的增加，血清α-生育酚在第3天呈线性增加（P<0.01）。高剂量日粮维生素A导致第3天血清α-生育酚略有下降（P<0.01），但其他天数血清α-生育酚浓度不受影响（P>0.10）。在所检测的所有组织中，随着日粮维生素E增加，组织α-生育酚呈线性增加（P<0.001）。未发现一致的证据表明高剂量日粮维生素A会影响生长育肥猪的生产性能或血清及组织α-生育酚浓度。
