饲粮纤维素水平对生长猪氨基酸和磷的标准消化率评定的影响
发布时间：2019-05-31 15:45
【摘要】：本试验研究了饲粮纤维素添加水平对生长猪内源磷损失和氨基酸内源回肠排泄量的影响,并研究了不同纤维水平对玉米-豆粕型饲粮中磷和氨基酸的标准回肠消化率的影响。完成本研究可为纤维饲料在猪营养生产中的应用提供科学依据。本研究包括两个部分：试验一,本研究通过两个试验考察了饲粮纤维水平对生长猪内源磷损失(EPL)和玉米-豆粕型饲粮中磷的标准回肠消化率(SID)和标准全肠道消化率(STTD)的影响。试验1选用28头回肠末端安装了简单T型瘘管的生长猪(体重25.1-2.0kg),按完全随机设计,分为4个组,每组7个重复,每个重复1头猪,分别饲喂添加了4个纤维水平(0、3%、6%和9%)的无磷饲粮。试验2选用28头回肠末端安装了简单T型瘘管的生长猪,按完全随机设计,分为4个组,每组7个重复,每个重复1头猪,分别饲喂添加了4个纤维水平(0、3%、6%和9%)的玉米-豆粕型饲粮。每个试验包括5d的适应期,2d的粪样收集期(第6d和第7 d)和2d的食糜收集期(第8d和第9 d)。以三氧化二铬作为指示剂测定EPL和磷的消化率。结果表明,试验测得生长猪全肠道EPL随饲粮纤维添加水平提高而线性降低(P0.05)。磷的表观回肠消化率(AID)、表观全肠道消化率(ATTD)、SID和STTD随饲粮纤维水平提高而降低(P0.05)。试验二,本研究通过两个试验考察了饲粮纤维素添加水平对生长猪氨基酸的回肠内源排泄量(IEF)和玉米-豆粕型饲粮中氨基酸的表观回肠消化率(AID)和标准回肠消化率(SID)的影响。试验1选用28头回肠末端安装了简单T型瘘管的生长猪(体重25.1±2.0kg),按完全随机区组设计,分为4个处理组,每组7个重复,每个重复1头猪,分别饲喂添加了4个纤维素添加水平(0、3%、6%和9%)的无氮饲粮。试验2选用28头回肠末端安装了简单T型瘘管的生长猪,按完全随机区组设计,分为4个处理组,每组7个重复,每个重复1头猪,分别饲喂添加了4个纤维素添加水平(0、3%、6%和9%)的玉米-豆粕型饲粮。每个试验包括7d的适应期,2d的食糜收集期(第8d和第9d)。以三氧化二铬作为指示剂测定氨基酸IEF和氨基酸的消化率。结果表明,饲粮纤维素添加水平对生长猪氨基酸IEF无显著影响(P0.05)。苏氨酸、丝氨酸、谷氨酸、胱氨酸、异亮氨酸、酪氨酸、苯丙氨酸、赖氨酸和组氨酸AID随纤维素添加水平增加显著线性降低(P0.05)。苏氨酸、丝氨酸、胱氨酸、缬氨酸、异亮氨酸、酪氨酸、苯丙氨酸、赖氨酸和组氨酸SID随纤维素添加水平增加显著线性降低(P0.05)。综合以上结果,在本试验条件下,猪对无磷饲粮纤维素适宜的添加水平为3%-6%,玉米-豆粕型饲粮建议不添加。饲粮纤维水平显著影响生长猪EPL和玉米-豆粕型饲粮中磷消化率的测定。饲粮纤维素添加水平对生长猪氨基酸IEF的评定无显著影响,但饲粮氨基酸AID和SID随纤维素添加水平增加显著线性降低。
[Abstract]:The effects of dietary cellulose supplementation on the loss of intracellular phosphorus and the excretion of amino acids in growing pigs were studied, and the effects of different fiber levels on the standard ileal digestibility of phosphorus and amino acids in corn-soybean meal diet were also studied. This study can provide scientific basis for the application of fiber feed in pig nutrition production. This study consists of two parts: experiment 1, In this study, the effects of dietary fiber levels on the standard ileal digestibility (SID) and standard total intestinal digestibility (STTD) of phosphorus in growing pigs and corn-soybean meal diet were investigated by two experiments. In experiment 1, 28 growing pigs with simple T-type fistula at the end of ileum (body weight 25.1-2.0kg) were randomly divided into 4 groups with 7 repeats in each group and 1 pig in each group. Four fiber levels (0, 3%, 6% and 9%) were fed with phosphorus-free diet. In experiment 2, 28 growing pigs with simple T-type fistula at the end of ileum were randomly divided into 4 groups with 7 repeats in each group, and one pig in each group was fed with 4 fiber levels (0, 3%). 6% and 9%) corn-soybean meal diet. Each trial included an adaptation period of 5 days, a fecal sample collection period of 2 days (day 6 and day 7) and a chyme collection period of day 2 (day 8 and day 9 d). The digestibility of EPL and phosphorus was determined with chromium trioxide as indicator. The results showed that the total intestinal EPL of growing pigs decreased linearly with the increase of dietary fiber level (P 0.05). The apparent ileal digestibility of phosphorus (AID), apparent total intestinal digestibility (ATTD), SID and STTD decreased with the increase of dietary fiber level (P 0.05). Experiment two, In this study, the apparent ileal digestibility (AID) and standard ileal digestion of amino acids in growing pigs and corn-soybean meal diet were investigated by two experiments. The effects of dietary cellulose supplementation levels on the internal excretion of amino acids in the ileum of growing pigs and the apparent ileal digestibility of amino acids in corn-soybean meal diet were investigated. The effect of rate (SID). In experiment 1, 28 growing pigs with simple T-type fistula at the end of ileum (weight 25.1 卤2.0 kg),) were divided into 4 treatment groups, 7 repeats in each group and 1 pig in each group. Four cellulose supplementation levels (0, 3%, 6% and 9%) were fed with nitrogen-free diet. In experiment 2, 28 growing pigs with simple T-type fistula at the end of ileum were divided into 4 treatment groups according to the completely random block design, with 7 repeats in each group and 1 pig in each group. Corn-soybean meal diet with four cellulose supplementation levels (0, 3%, 6% and 9%) was fed. Each trial included an adaptation period of 7 days and a chyme collection period of 2 days (8 days and 9 days). The digestibility of amino acid IEF and amino acid was determined with chromium trioxide as indicator. The results showed that dietary cellulose supplementation had no significant effect on amino acid IEF in growing pigs (P 0.05). Threonine, serine, glutamic acid, cystine, isoleucine, tyrosine, phenylalanine, lysine and histidine AID decreased linearly with the increase of cellulose addition level (P 0.05). Threonine, serine, cystine, valine, isoleucine, tyrosine, phenylalanine, lysine and histidine SID decreased linearly with the increase of cellulose addition level (P 0.05). Under the conditions of this experiment, the suitable addition level of cellulose to phosphorus-free diet was 3% 鈮，
本文编号：2489821
[Abstract]:The effects of dietary cellulose supplementation on the loss of intracellular phosphorus and the excretion of amino acids in growing pigs were studied, and the effects of different fiber levels on the standard ileal digestibility of phosphorus and amino acids in corn-soybean meal diet were also studied. This study can provide scientific basis for the application of fiber feed in pig nutrition production. This study consists of two parts: experiment 1, In this study, the effects of dietary fiber levels on the standard ileal digestibility (SID) and standard total intestinal digestibility (STTD) of phosphorus in growing pigs and corn-soybean meal diet were investigated by two experiments. In experiment 1, 28 growing pigs with simple T-type fistula at the end of ileum (body weight 25.1-2.0kg) were randomly divided into 4 groups with 7 repeats in each group and 1 pig in each group. Four fiber levels (0, 3%, 6% and 9%) were fed with phosphorus-free diet. In experiment 2, 28 growing pigs with simple T-type fistula at the end of ileum were randomly divided into 4 groups with 7 repeats in each group, and one pig in each group was fed with 4 fiber levels (0, 3%). 6% and 9%) corn-soybean meal diet. Each trial included an adaptation period of 5 days, a fecal sample collection period of 2 days (day 6 and day 7) and a chyme collection period of day 2 (day 8 and day 9 d). The digestibility of EPL and phosphorus was determined with chromium trioxide as indicator. The results showed that the total intestinal EPL of growing pigs decreased linearly with the increase of dietary fiber level (P 0.05). The apparent ileal digestibility of phosphorus (AID), apparent total intestinal digestibility (ATTD), SID and STTD decreased with the increase of dietary fiber level (P 0.05). Experiment two, In this study, the apparent ileal digestibility (AID) and standard ileal digestion of amino acids in growing pigs and corn-soybean meal diet were investigated by two experiments. The effects of dietary cellulose supplementation levels on the internal excretion of amino acids in the ileum of growing pigs and the apparent ileal digestibility of amino acids in corn-soybean meal diet were investigated. The effect of rate (SID). In experiment 1, 28 growing pigs with simple T-type fistula at the end of ileum (weight 25.1 卤2.0 kg),) were divided into 4 treatment groups, 7 repeats in each group and 1 pig in each group. Four cellulose supplementation levels (0, 3%, 6% and 9%) were fed with nitrogen-free diet. In experiment 2, 28 growing pigs with simple T-type fistula at the end of ileum were divided into 4 treatment groups according to the completely random block design, with 7 repeats in each group and 1 pig in each group. Corn-soybean meal diet with four cellulose supplementation levels (0, 3%, 6% and 9%) was fed. Each trial included an adaptation period of 7 days and a chyme collection period of 2 days (8 days and 9 days). The digestibility of amino acid IEF and amino acid was determined with chromium trioxide as indicator. The results showed that dietary cellulose supplementation had no significant effect on amino acid IEF in growing pigs (P 0.05). Threonine, serine, glutamic acid, cystine, isoleucine, tyrosine, phenylalanine, lysine and histidine AID decreased linearly with the increase of cellulose addition level (P 0.05). Threonine, serine, cystine, valine, isoleucine, tyrosine, phenylalanine, lysine and histidine SID decreased linearly with the increase of cellulose addition level (P 0.05). Under the conditions of this experiment, the suitable addition level of cellulose to phosphorus-free diet was 3% 鈮，
本文编号：2489821
本文链接：https://www.wllwen.com/yixuelunwen/dongwuyixue/2489821.html
