本文選題：生長肥育豬 + 小肽螯合銅　； 參考：《黑龍江畜牧獸醫(yī)》2017年11期

【摘要】：為了研究日糧中小肽螯合銅鋅對生長肥育豬生產(chǎn)性能、抗氧化能力和糞便中銅鋅元素含量的影響,試驗將152頭健康狀況良好、體重相近的28日齡長大斷奶仔公豬隨機分為2組,每組4個重復(fù),每重復(fù)19頭仔豬。試驗分36~90日齡、91日齡~出欄兩階段進(jìn)行。對照組飼喂基礎(chǔ)日糧,試驗組將基礎(chǔ)日糧中的硫酸銅(Cu SO4)和硫酸鋅(Zn SO4)以小肽螯合銅和小肽螯合鋅替代。36~90日齡階段,對照組和試驗組Cu含量分別為174.42 mg/kg和75.56 mg/kg,Zn含量分別為2 412.14 mg/kg和522.91 mg/kg;91日齡~出欄階段,對照組和試驗組Cu含量分別為134.43 mg/kg和26.08 mg/kg,Zn含量分別為1 156.53 mg/kg和207.08 mg/kg。結(jié)果表明:36~90日齡和91日齡~出欄兩階段,與對照組相比,試驗組的期初體重、期末體重、平均日增重(ADG)、平均日采食量(ADFI)、料肉比(F/G)、出欄重和成活率均無顯著差異(P0.05)。36~90日齡階段,與對照組相比,試驗組血清中總抗氧化能力(T-AOC)、銅藍(lán)蛋白(CP)含量、總超氧化物歧化酶(T-SOD)活性、銅鋅超氧化物歧化酶(Cu Zn-SOD)活性、丙二醛(MDA)含量、谷胱甘肽過氧化物酶(GSH-Px)活性無顯著變化(P0.05);蛋白質(zhì)羰基濃度顯著降低(P0.05)。36~90日齡階段,與對照組相比,試驗組血清中總蛋白質(zhì)(TP)、尿素氮(BUN)、血清白蛋白(ALB)含量和谷草轉(zhuǎn)氨酶(AST)、堿性磷酸酶(AKP)活性無顯著變化(P0.05),但TP濃度有升高趨勢(P=0.06),AKP活性有降低趨勢(P=0.051);與對照組相比,試驗組血清中谷丙轉(zhuǎn)氨酶(ALT)活性顯著降低(P0.05)。試驗組的血清總氨基酸濃度高于對照組,特別是賴氨酸(Lys)、甲硫氨酸(Met)、蘇氨酸(Thr)等限制性氨基酸的濃度有所升高。36~90日齡階段,與對照組相比,試驗組糞便中銅鋅元素的含量極顯著降低(P0.01),分別減少32.21%和65.83%;91日齡~出欄階段,試驗組糞便中Cu元素含量極顯著降低(P0.01),Zn元素含量有降低趨勢(P=0.28),分別減少63.27%和26.87%。說明以低劑量的小肽螯合銅和小肽螯合鋅替代高劑量的硫酸鹽源銅鋅對生長肥育豬生產(chǎn)性能和健康狀況無不良影響,但能顯著降低糞便中銅鋅的排放量。
[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.
【作者單位】： 上海交通大學(xué)農(nóng)業(yè)與生物學(xué)院/上海市獸醫(yī)生物技術(shù)重點實驗室;上海市動物疫病預(yù)防控制中心;
【基金】：上海市科技興農(nóng)重點攻關(guān)項目(滬農(nóng)科攻字(2016)第3-3號) 上海市生豬產(chǎn)業(yè)技術(shù)體系建設(shè)項目(滬農(nóng)科產(chǎn)字(2014)第6號)
【分類號】：S828.5

【參考文獻(xiàn)】

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本文編號：2020185