不同形态铜源对仔猪生长性能、血液生化指标和粪铜排出量的影响

Effect of Different Copper Source on Growth Performance and Blood Physilogical Parameters and Cu Level on Feces in Piglets

目的:研究不同形态铜源对仔猪生长性能、血液生化指标和粪铜排出量的影响。方法:将96头20kg左右的仔猪随机分为3组,分别在基础日粮中添加150mg/kg源于硫酸铜的铜(对照组)以及105mg/kg源于烟酸铜的铜(试验Ⅰ组)和105mg/kg源于蛋氨酸铜的铜(试验Ⅱ组)饲喂仔猪,每组4个重复,每个重复8头仔猪,试验期30d。结果:试验组与对照组在ADG、ADFI、FCR以及血液生化指标如BUN、TP、T-SOD、CP无等显著差异(P<0.05),但粪铜的含量比对照组降低了43.7%、45.7%(P<0.01)。结论:添加低剂量有机铜的吸收利用率比硫酸铜高,且可减少粪铜的排泄。

Objective： To investigate the effects of different copper source on growth performance and blood physiological parameters and Cu level on feces in piglets. Methods; A total of 96 crossed piglets （D × L×Y）20 kg BW divided into three groups. One was control groups fed with 150 mg· kg^-1 Cu from CuSO4· 5H2O based on the basal diet. The trial groups were fed with 105 mg· kg^-1 Cu from Cu-nicotinate and Cumethionine based on the basal diet, Each group had 4 repeats and each repeat used 8 piglets. Whole feeding experiment lasted for 30 days, Results： The average daily gain （ADG）and average daily feed intake （ADFI）and feed conversion rate（FCR） and blood urea nitrogen（BUN）and total protein （TP）and total superoxide dismutase（T-SOD）and ceruloplasmin（CP） on serum in trial groups and control group were equally effective to piglets, but Cu level on feces of trial groups was significantly decreased 43.7%.45.7%（ P 〈 0. 01 ）. Conclusion： This experiment demonstrated that organic Cu absorbed and retained by.piglets better than Cu-sulfuric acid,and reduced Cu level on feces in piglets.