飼糧添加木薯渣對羔羊生長性能、血清指標(biāo)及瘤胃發(fā)酵指標(biāo)的影響
發(fā)布時間：2018-12-08 10:21
【摘要】：本試驗旨在研究飼糧中添加不同比例木薯渣對羔羊生長性能、營養(yǎng)物質(zhì)表觀消化率、血清指標(biāo)及瘤胃發(fā)酵指標(biāo)的影響。試驗選取3~4月齡、體重相近、健康狀況良好的斷奶湖羊羔羊96只,采用單因素隨機分組設(shè)計方法,隨機分為4組,每組6個重復(fù),每個重復(fù)4只,分別在飼糧中添加0(對照)、5%、10%、20%的木薯渣,配制成等能等氮的4種飼糧。預(yù)試期10 d,正試期45 d。結(jié)果表明:1)飼糧添加不同比例木薯渣對羔羊的終末體重、平均日采食量及營養(yǎng)物質(zhì)表觀消化率均無顯著性影響(P0.05),但隨著木薯渣添加比例的升高,平均日增重、料重比呈一次線性升高和降低(P0.05)。2)隨木薯渣添加比例的升高,血清總抗氧化能力(T-AOC)呈先降低再升高的二次曲線變化(P=0.007),對照組最高;血清谷胱甘肽還原酶(GSH)含量呈先升高后降低的二次曲線變化(P=0.001),10%組顯著高于其他各組(P0.05);血清丙二醛(MDA)含量變化不顯著(P0.05);血清超氧化物歧化酶(SOD)活性呈一次線性降低(P=0.010)。4)隨著飼糧中木薯渣添加比例的提高,血清總蛋白(TP)和白蛋白(Alb)含量均呈一次線性和二次曲線變化(P0.05);血清白球比(A/G)、門冬氨酸氨基轉(zhuǎn)移酶(AST)活性、甘油三酯(TG)和球蛋白(Glb)含量呈二次曲線變化(P0.05);血清尿酸(UA)和肌酐(Crea)含量呈一次線性變化(P0.05);各組之間血清丙氨酸氨基轉(zhuǎn)移酶(ALT)活性和葡萄糖(GLU)含量差異不顯著(P0.05)。5)飼糧木薯渣添加比例對生長羔羊瘤胃液的p H,乙酸、丙酸、丁酸、異戊酸、戊酸濃度及乙酸/丙酸無顯著性影響(P0.05)。綜合得出,飼糧中添加木薯渣提高了羔羊生長性能,但高添加比例的木薯渣會對羔羊抗氧化能力和腎臟造成損害,建議木薯渣添加比例低于20%為宜。
[Abstract]:The purpose of this experiment was to study the effects of different proportion of cassava residue on growth performance, apparent digestibility of nutrients, serum index and rumen fermentation index of lamb. 96 weanling Hu sheep with similar body weight and good health were selected in the experiment. They were randomly divided into 4 groups with 6 replicates in each group and 4 lambs in each group. 0 (control) and 5% cassava dregs were added to the diet respectively, and 4 kinds of equal nitrogen diets were prepared. The pre-test period was 10 days and the positive test period was 45 days. The results showed that: 1) there were no significant effects on the end weight, average daily intake and apparent digestibility of nutrients of lamb fed with different proportion of cassava dregs (P0.05), but the average daily gain increased with the increase of cassava residue. The ratio of feed to weight increased linearly and decreased (P0.05). With the increase of the proportion of cassava dregs, the total antioxidant capacity (T-AOC) of serum decreased first and then increased (P0. 007), which was the highest in the control group. The content of glutathione reductase (GSH) in serum increased first and then decreased (P0. 001), which was significantly higher in 10% group than in other groups (P0.05), but no significant change in serum malondialdehyde (MDA) content (P0.05). The activity of serum superoxide dismutase (SOD) decreased linearly (P0. 010). 4) with the increase of the proportion of cassava dregs in diet, The changes of serum total protein (TP) and albumin (Alb) were linear and quadratic (P0.05). The activity of aspartate aminotransferase (AST), triglyceride (TG) and globulin (Glb) (Glb) showed a quadratic curve change (P0.05). The levels of serum uric acid (UA) and creatinine (Crea) showed a linear change (P0.05). There was no significant difference in serum alanine aminotransferase (ALT) activity and glucose (GLU) content among groups (P0.05). 5) dietary cassava residue supplementation ratio on pH, acetic acid, propionic acid, butyric acid, isovaleric acid in rumen fluid of growing lambs. The concentration of valeric acid and acetic acid / propionic acid had no significant effect (P0.05). It was concluded that the growth performance of lambs was improved by adding cassava dregs to diet, but the high proportion of cassava residue could damage the antioxidant ability and kidney of lambs. It was suggested that the proportion of cassava residue should be less than 20%.
【作者單位】： 中國農(nóng)業(yè)科學(xué)院飼料研究所農(nóng)業(yè)部飼料生物技術(shù)重點開放實驗室;
【基金】：國家公益性行業(yè)(農(nóng)業(yè))科研專項(201303143) 國家肉羊產(chǎn)業(yè)技術(shù)體系建設(shè)專項(CARS-39)
【分類號】：S826.5
[Abstract]:The purpose of this experiment was to study the effects of different proportion of cassava residue on growth performance, apparent digestibility of nutrients, serum index and rumen fermentation index of lamb. 96 weanling Hu sheep with similar body weight and good health were selected in the experiment. They were randomly divided into 4 groups with 6 replicates in each group and 4 lambs in each group. 0 (control) and 5% cassava dregs were added to the diet respectively, and 4 kinds of equal nitrogen diets were prepared. The pre-test period was 10 days and the positive test period was 45 days. The results showed that: 1) there were no significant effects on the end weight, average daily intake and apparent digestibility of nutrients of lamb fed with different proportion of cassava dregs (P0.05), but the average daily gain increased with the increase of cassava residue. The ratio of feed to weight increased linearly and decreased (P0.05). With the increase of the proportion of cassava dregs, the total antioxidant capacity (T-AOC) of serum decreased first and then increased (P0. 007), which was the highest in the control group. The content of glutathione reductase (GSH) in serum increased first and then decreased (P0. 001), which was significantly higher in 10% group than in other groups (P0.05), but no significant change in serum malondialdehyde (MDA) content (P0.05). The activity of serum superoxide dismutase (SOD) decreased linearly (P0. 010). 4) with the increase of the proportion of cassava dregs in diet, The changes of serum total protein (TP) and albumin (Alb) were linear and quadratic (P0.05). The activity of aspartate aminotransferase (AST), triglyceride (TG) and globulin (Glb) (Glb) showed a quadratic curve change (P0.05). The levels of serum uric acid (UA) and creatinine (Crea) showed a linear change (P0.05). There was no significant difference in serum alanine aminotransferase (ALT) activity and glucose (GLU) content among groups (P0.05). 5) dietary cassava residue supplementation ratio on pH, acetic acid, propionic acid, butyric acid, isovaleric acid in rumen fluid of growing lambs. The concentration of valeric acid and acetic acid / propionic acid had no significant effect (P0.05). It was concluded that the growth performance of lambs was improved by adding cassava dregs to diet, but the high proportion of cassava residue could damage the antioxidant ability and kidney of lambs. It was suggested that the proportion of cassava residue should be less than 20%.
【作者單位】： 中國農(nóng)業(yè)科學(xué)院飼料研究所農(nóng)業(yè)部飼料生物技術(shù)重點開放實驗室;
【基金】：國家公益性行業(yè)(農(nóng)業(yè))科研專項(201303143) 國家肉羊產(chǎn)業(yè)技術(shù)體系建設(shè)專項(CARS-39)
【分類號】：S826.5
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