富含核苷酸的酵母抽提物对仔猪生长、血液生化指标和肠道粘膜形态的影响
发布时间：2019-01-06 17:21
【摘要】：本试验旨在研究富含核苷酸的酵母抽提物(YE)对早期断奶仔猪生长性能及肠道粘膜形态的影响。试验选取150头(21士1)d断奶的杜×长x大三元杂仔猪(6.22±0.16 kg),将它们随机分为3个处理组,即对照组、血浆蛋白粉(SDPP)组和YE组,并分别饲喂以下3种日粮：基础日粮、基础日粮+3%SDPP和基础日粮+3% YE,饲喂14 d。在试验结束时,从每个处理组随机抽取5头仔猪,采集血样后屠宰取样,分别测定血样中生理生化指标、氨基酸、激素水平以及空肠和回肠的组织学形态。试验结果如下：1、生长性能指标与对照组相比,饲粮中添加3%SDPP和3% YE可以提高断奶仔猪平均日增重(P0.05),降低料肉比(P0.05),显著降低腹泻率(P0.05),且SDPP组和YE组之间在生长性能指标方面差异不明显。2、血清生理生化指标和脏器指数与对照组相比,饲粮中添加3%SDPP或3%YE极显著提高血清中总蛋白水平(P0.01),且血清中乳糖(P=0.063)和乳酸脱氢酶(P=-0.144)含量有增加的趋势。与SDPP组相比,YE组仔猪血清中葡萄糖含量降低15.3%(P0.05),尿素氮含量增加28.2%(P0.05),且血清磷含量降低10.52%(P0.05)。此外,与SDPP组相比,YE组仔猪肝脏指数显著降低(P0.01),且肾脏指数有降低的趋势(P=-0.069)。3、血浆氨基酸浓度必需氨基酸方面,与对照组相比,SDPP组和YE组仔猪血浆中蛋氨酸(P=0.082)、色氨酸(P=0.086)和赖氨酸(P=-0.052)含量均有降低的趋势,而亮氨酸含量有增加的趋势,同时异亮氨酸(P0.05)含量显著提高。此外,与SDPP组相比,YE组仔猪血浆中必需氨基酸色氨酸(P=0.045)显著下降,且赖氨酸和蛋氨酸有下降的趋势(P0.05)。非必需氨基酸方面,与对照组相比,YE组中谷氨酸(P0.01)和谷氨酰胺(P0.01)浓度显著降低,且SDPP组中谷氨酰胺(P=0.063)和谷氨酸(P0.05)浓度有下降的趋势。而相较于SDPP组,YE组仔猪血浆中谷氨酸(P0.05)和谷氨酰胺浓度分别降低了19.9%和19%。此外,与SDPP组相比,YE组仔猪血浆中精氨酸含量显著升高(P0.05)。4、肠道粘膜形态与对照组相比,SDPP组和YE组仔猪空肠绒毛长度显著升高(P0.05)。相较于SDPP组,YE组仔猪回肠绒毛长度显著降低(P0.05),而绒腺比有增加的趋势(P0.05)。5、血清激素水平与SDPP组相比,YE组仔猪血清中三碘甲腺原氨酸含量显著升高(P=0.047),甲状腺素含量比SDPP组提高4.7%(P0.05)。综合试验结果可得出如下结论：(1)日粮中添加富含核苷酸的酵母抽提物在提高断奶仔猪生长性能方面与SDPP有相似的效果；(2)相较于SDPP组,仔猪早期日粮中添加富含核苷酸的酵母抽提物可能有助于提高断奶仔猪对日粮中氨基酸的有效利用效率,促进蛋白质累积；(3)与SDPP组相比,日粮中添加富含核苷酸的酵母抽提物可以改善断奶仔猪回肠绒毛形态,有助于提高断奶仔猪对营养物质的吸收效率和降低腹泻率。综合看来,富含核苷酸的酵母抽提物在早期断奶仔猪日粮中的应用具有与SDPP同等甚至更优的饲养效果。
[Abstract]:The purpose of this study was to study the effects of (YE), a yeast extract rich in nucleotides, on growth performance and intestinal mucosal morphology in early weaning piglets. One hundred and fifty (21 + 1) d weaned DU 脳 Changx large Ternary crossbred piglets (6.22 卤0.16 kg),) were randomly divided into three groups: control group, plasma protein powder (SDPP) group and YE group. The following three diets were fed: basal diet, basal diet 3%SDPP and basal diet 3% YE, for 14 days. At the end of the experiment, 5 piglets were randomly selected from each treatment group. Blood samples were collected and slaughtered to determine the physiological and biochemical indexes, amino acids, hormone levels and histological morphology of jejunum and ileum. The results were as follows: 1. Compared with the control group, adding 3%SDPP and 3% YE to the diet could increase the average daily gain (P0.05), decrease the feed / meat ratio (P0.05), significantly reduce the diarrhea rate (P0.05). There was no significant difference in growth performance between the SDPP group and the YE group. 2. Compared with the control group, the serum physiological and biochemical indexes and organ index were significantly increased by adding 3%SDPP or 3%YE to the diet (P0.01). The contents of lactose (P0. 063) and lactate dehydrogenase (P0. 144) in serum showed an increasing trend. Compared with SDPP group, serum glucose content, urea nitrogen content and serum phosphorus content in YE group were decreased by 15.3% (P0.05), 28.2% (P0.05) and 10.52% (P0.05), respectively. In addition, compared with SDPP group, the liver index and kidney index of YE group decreased significantly (P0.01), and the kidney index decreased (P0. 069). 3. The plasma amino acid concentration was essential amino acid, compared with the control group. The contents of methionine (P0. 082), tryptophan (P0. 086) and lysine (Pn0. 052) in plasma of SDPP and YE piglets were decreased, while the content of leucine increased. At the same time, the content of isoleucine (P0.05) increased significantly. In addition, compared with SDPP group, plasma essential amino acid tryptophan (P0. 045) in YE group decreased significantly, and lysine and methionine decreased (P0.05). In terms of non-essential amino acids, the concentrations of glutamate (P0.01) and glutamine (P0.01) in YE group were significantly lower than those in control group, and the concentrations of glutamine (P0. 063) and glutamate (P0.05) in SDPP group were decreased. Compared with SDPP group, plasma glutamate (P0.05) and glutamine concentration in YE group decreased by 19.9% and 19%, respectively. In addition, compared with SDPP group, the content of arginine in plasma of YE group was significantly higher than that of SDPP group (P0.05). 4. Compared with the control group, the intestinal mucosal morphology in SDPP group and YE group were significantly higher than that in control group (P0.05). Compared with the SDPP group, the villus length of the YE group decreased significantly (P0.05), while the chorionic gland ratio increased (P0.05). The serum hormone level in YE group was higher than that in the SDPP group. The content of triiodothyronine in serum of YE group was significantly higher than that of SDPP group (P0.047), and the content of thyroxine was 4.7% higher than that of SDPP group (P0.05). The results showed that: (1) yeast extract with rich nucleotides in diet had similar effect to SDPP in improving growth performance of weaned piglets; (2) compared with SDPP group, the addition of yeast extract rich in nucleotides in the early diet of piglets may help to improve the efficiency of effective utilization of amino acids and promote protein accumulation in weaning piglets. (3) compared with SDPP group, dietary yeast extract rich in nucleotides could improve the morphology of intestinal villi of weaned piglets, improve the absorption efficiency of nutrients and reduce the diarrhea rate of weaned piglets. In general, the application of yeast extract rich in nucleotides in early weaning piglets diet has the same or better feeding effect as SDPP.
【学位授予单位】：湖南农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S828.5
本文编号：2403091
[Abstract]:The purpose of this study was to study the effects of (YE), a yeast extract rich in nucleotides, on growth performance and intestinal mucosal morphology in early weaning piglets. One hundred and fifty (21 + 1) d weaned DU 脳 Changx large Ternary crossbred piglets (6.22 卤0.16 kg),) were randomly divided into three groups: control group, plasma protein powder (SDPP) group and YE group. The following three diets were fed: basal diet, basal diet 3%SDPP and basal diet 3% YE, for 14 days. At the end of the experiment, 5 piglets were randomly selected from each treatment group. Blood samples were collected and slaughtered to determine the physiological and biochemical indexes, amino acids, hormone levels and histological morphology of jejunum and ileum. The results were as follows: 1. Compared with the control group, adding 3%SDPP and 3% YE to the diet could increase the average daily gain (P0.05), decrease the feed / meat ratio (P0.05), significantly reduce the diarrhea rate (P0.05). There was no significant difference in growth performance between the SDPP group and the YE group. 2. Compared with the control group, the serum physiological and biochemical indexes and organ index were significantly increased by adding 3%SDPP or 3%YE to the diet (P0.01). The contents of lactose (P0. 063) and lactate dehydrogenase (P0. 144) in serum showed an increasing trend. Compared with SDPP group, serum glucose content, urea nitrogen content and serum phosphorus content in YE group were decreased by 15.3% (P0.05), 28.2% (P0.05) and 10.52% (P0.05), respectively. In addition, compared with SDPP group, the liver index and kidney index of YE group decreased significantly (P0.01), and the kidney index decreased (P0. 069). 3. The plasma amino acid concentration was essential amino acid, compared with the control group. The contents of methionine (P0. 082), tryptophan (P0. 086) and lysine (Pn0. 052) in plasma of SDPP and YE piglets were decreased, while the content of leucine increased. At the same time, the content of isoleucine (P0.05) increased significantly. In addition, compared with SDPP group, plasma essential amino acid tryptophan (P0. 045) in YE group decreased significantly, and lysine and methionine decreased (P0.05). In terms of non-essential amino acids, the concentrations of glutamate (P0.01) and glutamine (P0.01) in YE group were significantly lower than those in control group, and the concentrations of glutamine (P0. 063) and glutamate (P0.05) in SDPP group were decreased. Compared with SDPP group, plasma glutamate (P0.05) and glutamine concentration in YE group decreased by 19.9% and 19%, respectively. In addition, compared with SDPP group, the content of arginine in plasma of YE group was significantly higher than that of SDPP group (P0.05). 4. Compared with the control group, the intestinal mucosal morphology in SDPP group and YE group were significantly higher than that in control group (P0.05). Compared with the SDPP group, the villus length of the YE group decreased significantly (P0.05), while the chorionic gland ratio increased (P0.05). The serum hormone level in YE group was higher than that in the SDPP group. The content of triiodothyronine in serum of YE group was significantly higher than that of SDPP group (P0.047), and the content of thyroxine was 4.7% higher than that of SDPP group (P0.05). The results showed that: (1) yeast extract with rich nucleotides in diet had similar effect to SDPP in improving growth performance of weaned piglets; (2) compared with SDPP group, the addition of yeast extract rich in nucleotides in the early diet of piglets may help to improve the efficiency of effective utilization of amino acids and promote protein accumulation in weaning piglets. (3) compared with SDPP group, dietary yeast extract rich in nucleotides could improve the morphology of intestinal villi of weaned piglets, improve the absorption efficiency of nutrients and reduce the diarrhea rate of weaned piglets. In general, the application of yeast extract rich in nucleotides in early weaning piglets diet has the same or better feeding effect as SDPP.
【学位授予单位】：湖南农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S828.5
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