小肽螯合铜、锌对生长肥育猪生产性能、生化指标和粪便铜锌含量的影响

发布时间：2018-06-15 02:34

本文选题：生长肥育猪 + 小肽螯合铜　；参考：《黑龙江畜牧兽医》2017年11期

【摘要】：为了研究日粮中小肽螯合铜锌对生长肥育猪生产性能、抗氧化能力和粪便中铜锌元素含量的影响,试验将152头健康状况良好、体重相近的28日龄长大断奶仔公猪随机分为2组,每组4个重复,每重复19头仔猪。试验分36~90日龄、91日龄~出栏两阶段进行。对照组饲喂基础日粮,试验组将基础日粮中的硫酸铜(Cu SO4)和硫酸锌(Zn SO4)以小肽螯合铜和小肽螯合锌替代。36~90日龄阶段,对照组和试验组Cu含量分别为174.42 mg/kg和75.56 mg/kg,Zn含量分别为2 412.14 mg/kg和522.91 mg/kg;91日龄~出栏阶段,对照组和试验组Cu含量分别为134.43 mg/kg和26.08 mg/kg,Zn含量分别为1 156.53 mg/kg和207.08 mg/kg。结果表明:36~90日龄和91日龄~出栏两阶段,与对照组相比,试验组的期初体重、期末体重、平均日增重(ADG)、平均日采食量(ADFI)、料肉比(F/G)、出栏重和成活率均无显著差异(P0.05)。36~90日龄阶段,与对照组相比,试验组血清中总抗氧化能力(T-AOC)、铜蓝蛋白(CP)含量、总超氧化物歧化酶(T-SOD)活性、铜锌超氧化物歧化酶(Cu Zn-SOD)活性、丙二醛(MDA)含量、谷胱甘肽过氧化物酶(GSH-Px)活性无显著变化(P0.05);蛋白质羰基浓度显著降低(P0.05)。36~90日龄阶段,与对照组相比,试验组血清中总蛋白质(TP)、尿素氮(BUN)、血清白蛋白(ALB)含量和谷草转氨酶(AST)、碱性磷酸酶(AKP)活性无显著变化(P0.05),但TP浓度有升高趋势(P=0.06),AKP活性有降低趋势(P=0.051);与对照组相比,试验组血清中谷丙转氨酶(ALT)活性显著降低(P0.05)。试验组的血清总氨基酸浓度高于对照组,特别是赖氨酸(Lys)、甲硫氨酸(Met)、苏氨酸(Thr)等限制性氨基酸的浓度有所升高。36~90日龄阶段,与对照组相比,试验组粪便中铜锌元素的含量极显著降低(P0.01),分别减少32.21%和65.83%;91日龄~出栏阶段,试验组粪便中Cu元素含量极显著降低(P0.01),Zn元素含量有降低趋势(P=0.28),分别减少63.27%和26.87%。说明以低剂量的小肽螯合铜和小肽螯合锌替代高剂量的硫酸盐源铜锌对生长肥育猪生产性能和健康状况无不良影响,但能显著降低粪便中铜锌的排放量。
[Abstract]:In order to study the effects of small peptide chelated copper and zinc on growth performance, antioxidant capacity and copper and zinc content in feces of growing and fattening pigs, 152 adult weaned boars with good health and similar body weight were randomly divided into two groups. There were 4 replicates in each group and 19 piglets per replica. The experiment was divided into two stages: 36 ~ 90 days old and 91 days old. The control group was fed with basal diet. The experimental group used copper sulfate (CuSO4) and zinc sulfate (ZnSO4) in the basal diet to chelate copper with small peptide and zinc chelate with small peptide instead of 90 days of age. The Cu contents of the control group and the experimental group were 174.42 mg/kg and 75.56 mg / kg ~ (-1) mg/kg, respectively, and the Cu contents of the control group and the test group were 2 412.14 mg/kg and 522.91 mg / kg ~ (91) d ~ (-1) respectively. The Cu contents of the control group and the test group were 134.43 mg/kg and 26.08 mg / kg ~ (-1) mg/kg and 207.08 mg / kg ~ (-1), respectively. The results showed that there were no significant differences in the initial weight, final weight, average daily gain (ADGG), average daily intake (ADFI), feed / meat ratio (F / G), and survival rate (P0.05.3690 days) between the two stages of 90 days and 91 days of age, compared with the control group, and compared with the control group, there was no significant difference between the two groups in terms of body weight, final weight, average daily gain (ADG), average daily intake (ADFI), feed / meat ratio (F / G), and survival rate. Compared with the control group, the contents of total antioxidant capacity (T-AOC), ceruloplasmin (CPD), total superoxide dismutase (SOD) activity, copper zinc superoxide dismutase (Cu Zn-SOD) activity, malondialdehyde (MDA) content in the serum of the experimental group were compared with those in the control group. Glutathione peroxidase (GSH-Px) activity did not change significantly (P 0.05), and protein carbonyl concentration decreased significantly at 90 days of age, compared with the control group. There were no significant changes in serum total protein (TPN), urea nitrogen bun (), serum albumin (ALBN) and activities of glutamic oxalacetic aminotransferase (ASTN) and alkaline phosphatase (AKP) in the test group (P 0.05), but there was a tendency to increase the concentration of TP (P 0. 06) and decrease the activity of AKP (P 0. 051), compared with the control group. The activity of alanine aminotransferase (alt) in serum of the test group decreased significantly (P 0.05). The concentration of serum total amino acids in the experimental group was higher than that in the control group, especially the concentration of Lysl, methionine, threonine and Thr. the concentration of restricted amino acids in the test group was higher than that in the control group at the age of 90 days, compared with that in the control group. The contents of Cu and Zn in feces of the test group were significantly decreased by 32.21% and 65.83%, respectively. The content of Cu in the feces of the test group showed a tendency to decrease by 63.27% and 26.87%, respectively, and the content of Zn in the feces of the test group was significantly lower than that of the control group (P 0.01), and the content of Zn in the faeces decreased by 63.27% and 26.87%, respectively. The results showed that low dose copper chelate and small peptide zinc chelate instead of high dose copper and zinc sulfate had no adverse effect on growth performance and health status of growing and finishing pigs, but could significantly reduce the amount of copper and zinc in feces.
【作者单位】：上海交通大学农业与生物学院/上海市兽医生物技术重点实验室;上海市动物疫病预防控制中心;
【基金】：上海市科技兴农重点攻关项目(沪农科攻字(2016)第3-3号) 上海市生猪产业技术体系建设项目(沪农科产字(2014)第6号)
【分类号】：S828.5

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