Colnago G L, Jensen L S, Long P L
Poult Sci. 1984 May;63(5):896-903. doi: 10.3382/ps.0630896.
Experiments were conducted to study the effects of dietary selenium (Se) on peripheral blood leucocytes of chickens infected with coccidia. Primary coccidial infection significantly increased blood leucocyte number at 6 days postinfection (PI) in three of four experiments when chicks were fed a corn-soy diet, and in all four experiments at 11 days PI. When chickens were fed a semipurified (SP) diet, coccidial infection did not affect the blood leucocytes number at 6 days PI but significantly increased blood leucocyte number at 11 days PI. In the primary infection, Se significantly decreased blood leucocyte number in four of six experiments at 6 days PI and significantly increased the blood leucocyte number in three of five experiments at 11 days PI. In the secondary infection, chickens had significantly more blood leucocytes than chickens given a primary infection at 8 or 24 hr after challenge. Selenium significantly increased blood leucocyte number at 8 hr after challenge in one experiment and produced numerically higher leucocyte number in three other experiments. The results of these studies indicate that dietary Se supplementation modifies the number of peripheral blood leucocytes in chickens infected with coccidia.
进行了实验以研究日粮硒（Se）对感染球虫的鸡外周血白细胞的影响。在四项实验中的三项中，当雏鸡饲喂玉米-大豆日粮时，初次球虫感染在感染后6天（PI）显著增加了血液白细胞数量，而在所有四项实验中，在感染后11天均显著增加。当鸡饲喂半纯化（SP）日粮时，球虫感染在感染后6天不影响血液白细胞数量，但在感染后11天显著增加血液白细胞数量。在初次感染中，硒在感染后6天的六项实验中的四项中显著降低了血液白细胞数量，而在感染后11天的五项实验中的三项中显著增加了血液白细胞数量。在二次感染中，在攻毒后8或24小时，鸡的血液白细胞显著多于初次感染的鸡。在一项实验中，硒在攻毒后8小时显著增加了血液白细胞数量，在其他三项实验中白细胞数量在数值上更高。这些研究结果表明，日粮补充硒可改变感染球虫的鸡外周血白细胞数量。
