不同处理的玉米秸秆对肉兔颗粒饲料质量、养分消化率和生产性能的影响
发布时间：2018-08-09 14:11
【摘要】：本课题旨在研究不同处理的玉米秸秆对伊拉兔表观消化率、生产性能和血液指标的影响。本试验选用2月龄,体重在2kg左右,健康状况良好的伊拉肉兔随机分成四组:处理组1为对照组,喂养含25%普通玉米秸秆的基础饲粮;处理2喂养含25%膨化玉米秸秆的基础饲粮;处理组3喂养含25%发酵玉米秸秆的基础饲粮;处理组4喂养含25%膨化后再发酵玉米秸秆的基础饲粮,测试不同处理组中各营养物质的表观消化率及伊拉肉兔相关生长性能指标和血液指标。研究结果表明:1.膨化后再发酵玉米秸秆组、发酵玉米秸秆组和膨化玉米秸秆组的颗粒硬度均高于普通玉米秸秆组,差异显著(P0.05);膨化后再发酵玉米秸秆组和发酵玉米秸秆组的含粉率显著高于膨化玉米秸秆组和普通玉米秸秆组(P0.05);粉化率各组之间差异均不显著(P0.05)。2.经过膨化后再发酵处理的玉米秸秆中的总能、粗蛋白含量、钙含量、磷含量以及无氮浸出物含量高于发酵玉米秸秆组、膨化玉米秸秆组和普通玉米秸秆组。干物质含量、粗纤维含量、酸性洗涤纤维含量以及中性洗涤纤维含量,膨化后再发酵玉米秸秆组和发酵玉米秸秆组均低于膨化玉米秸秆组和普通玉米秸秆组。3.膨化后再发酵玉米秸秆组、发酵玉米秸秆组和膨化玉米秸秆组的表观消化能均高于普通玉米秸秆组,差异显著(P0.05),膨化后再发酵玉米秸秆组和发酵玉米秸秆组的总能消化率高于膨化玉米秸秆组和普通玉米秸秆组,差异显著(P0.05)。4.肉兔对不同处理组中各营养物质的表观消化率具有一定的差异性。其中干物质表观消化率、粗蛋白表观消化率、纤维表观消化率、无氮浸出物的表观消化率,膨化后再发酵玉米秸秆组最高,虽高于发酵玉米秸秆组,但差异并不显著(P0.05):膨化后再发酵和发酵两组都高于膨化玉米秸秆组和普通玉米秸秆组,差异极显著(P0.01);膨化玉米秸秆组和普通玉米秸秆组之间差异不显著(P0.05)。钙和磷的表观消化率,膨化后再发酵玉米秸秆组和发酵玉米秸秆组均高于膨化玉米秸秆组和普通玉米秸秆组,差异显著(P0.05)。5.膨化后再发酵玉米秸秆处理组中血清尿素氮含量和免疫球蛋白含量分别为8.29mmol/L、3.11g/L,与其他三组差异极显著(P0.01),比发酵玉米秸秆处理组分别增加了 17.2%、18.7%;比膨化玉米秸秆处理组分别增加了 23.3%、19.1%;比普通玉米秸秆处理组分别增加了 20.7%、21%。6.膨化后再发酵玉米秸秆处理组日增重为30.5g/d,比发酵玉米秸秆处理组增加了2.6%,与发酵玉米秸秆组差异不显著(P0.05),与膨化玉米秸秆组和普通玉米秸秆组差异极显著(P0.01),比膨化玉米秸秆处理组增加了 16.2%;比普通玉米秸秆处理组增加了 17.3%。7.四组处理组的料重比、屠宰率、全净膛率、胸肌率和腿肌率等指标数据差异不显著(P0.05),四组处理对伊拉肉兔料重比、屠宰率、全净膛率、胸肌率和腿肌率等指标没有影响。
[Abstract]:The purpose of this study was to study the effects of different treatments of corn straw on apparent digestibility, production performance and blood index of Ela rabbits. In this experiment, two months old, weight about 2kg, good health condition of Eira meat rabbits were randomly divided into four groups: treatment group 1 as the control group, fed with 25% common corn straw basic diet; Treatment group 2 fed basic diet containing 25% expanded corn straw; treatment group 3 fed basic diet containing 25% fermented corn straw; treatment group 4 fed basic diet containing 25% expanded corn straw; The apparent digestibility of nutrients and the related growth performance index and blood index were measured in different treatment groups. The results of the study show that 1: 1. The hardness of corn straw group, fermented corn straw group and expanded corn straw group were higher than that of common corn straw group. The difference was significant (P0.05); the percentage of powdered corn straw group and fermenting corn straw group was significantly higher than that of expanded corn straw group and common corn straw group (P0.05); there was no significant difference between the two groups (P0.05). The total energy, crude protein content, calcium content, phosphorus content and nitrogen-free extract content of corn straw treated by expanded fermentation were higher than those of fermented corn straw group, expanded corn straw group and common corn straw group. The dry matter content, crude fiber content, acid detergent fiber content and neutral detergent fiber content were lower in corn straw group and fermentation corn straw group than in expanded corn straw group and common corn straw group. The apparent digestibility of corn straw group, fermented corn straw group and expanded corn straw group were higher than that of common corn straw group. The difference was significant (P0.05). The total energy digestibility of the expanded and fermented corn straw groups was higher than that of the expanded corn straw group and the common corn straw group, and the difference was significant (P0.05). 4. The apparent digestibility of nutrients in different treatment groups was different in meat rabbits. Among them, dry matter apparent digestibility, crude protein apparent digestibility, fiber apparent digestibility, nitrogen-free extract apparent digestibility were the highest, although higher than fermented corn straw group. But the difference was not significant (P0.05): the two groups were higher than the extruded corn straw group and the ordinary corn straw group, the difference was extremely significant (P0.01); the difference between the expanded corn straw group and the ordinary corn straw group was not significant (P0.05). The apparent digestibility of calcium and phosphorus in the expanded and fermented corn straw groups and the fermenting corn straw groups were higher than those in the expanded corn straw group and the common corn straw group, and the difference was significant (P0.05). The contents of serum urea nitrogen and immunoglobulin in the corn straw treatment group were 8.29 mmol 路L ~ (-1) L ~ (-1) and 3.11 g 路L ~ (-1), respectively, which were significantly different from those of the other three groups (P0.01), and increased by 17.2% and 18.7%, respectively, compared with the other three groups (P0.01). The control group increased 23. 3% and 20. 7%, 21. 6%, respectively, compared with the common corn straw treatment group. The daily gain was 30.5 g / d in the extruded and re-fermented corn straw treatment group, which increased 2.6g / d compared with the fermented corn straw treatment group, but had no significant difference with the fermented corn straw group (P0.05), but was extremely significant (P0.01) compared with the extruded corn straw group and the common corn straw group (P0.01), and was higher than that of the fermented corn straw treatment group (P0.01). The corn straw treatment group increased 16. 2% and 17. 333. 7% more than the common corn straw treatment group. There was no significant difference in the feed weight ratio, slaughter rate, total muzzle rate, pectoral muscle rate and leg muscle rate among the four groups (P0.05). The four treatments had no effect on the ratio of feed to weight, slaughtering rate, total evisceration rate, pectoral muscle rate and leg muscle rate.
【学位授予单位】：沈阳农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S829.1
，
本文编号：2174328
[Abstract]:The purpose of this study was to study the effects of different treatments of corn straw on apparent digestibility, production performance and blood index of Ela rabbits. In this experiment, two months old, weight about 2kg, good health condition of Eira meat rabbits were randomly divided into four groups: treatment group 1 as the control group, fed with 25% common corn straw basic diet; Treatment group 2 fed basic diet containing 25% expanded corn straw; treatment group 3 fed basic diet containing 25% fermented corn straw; treatment group 4 fed basic diet containing 25% expanded corn straw; The apparent digestibility of nutrients and the related growth performance index and blood index were measured in different treatment groups. The results of the study show that 1: 1. The hardness of corn straw group, fermented corn straw group and expanded corn straw group were higher than that of common corn straw group. The difference was significant (P0.05); the percentage of powdered corn straw group and fermenting corn straw group was significantly higher than that of expanded corn straw group and common corn straw group (P0.05); there was no significant difference between the two groups (P0.05). The total energy, crude protein content, calcium content, phosphorus content and nitrogen-free extract content of corn straw treated by expanded fermentation were higher than those of fermented corn straw group, expanded corn straw group and common corn straw group. The dry matter content, crude fiber content, acid detergent fiber content and neutral detergent fiber content were lower in corn straw group and fermentation corn straw group than in expanded corn straw group and common corn straw group. The apparent digestibility of corn straw group, fermented corn straw group and expanded corn straw group were higher than that of common corn straw group. The difference was significant (P0.05). The total energy digestibility of the expanded and fermented corn straw groups was higher than that of the expanded corn straw group and the common corn straw group, and the difference was significant (P0.05). 4. The apparent digestibility of nutrients in different treatment groups was different in meat rabbits. Among them, dry matter apparent digestibility, crude protein apparent digestibility, fiber apparent digestibility, nitrogen-free extract apparent digestibility were the highest, although higher than fermented corn straw group. But the difference was not significant (P0.05): the two groups were higher than the extruded corn straw group and the ordinary corn straw group, the difference was extremely significant (P0.01); the difference between the expanded corn straw group and the ordinary corn straw group was not significant (P0.05). The apparent digestibility of calcium and phosphorus in the expanded and fermented corn straw groups and the fermenting corn straw groups were higher than those in the expanded corn straw group and the common corn straw group, and the difference was significant (P0.05). The contents of serum urea nitrogen and immunoglobulin in the corn straw treatment group were 8.29 mmol 路L ~ (-1) L ~ (-1) and 3.11 g 路L ~ (-1), respectively, which were significantly different from those of the other three groups (P0.01), and increased by 17.2% and 18.7%, respectively, compared with the other three groups (P0.01). The control group increased 23. 3% and 20. 7%, 21. 6%, respectively, compared with the common corn straw treatment group. The daily gain was 30.5 g / d in the extruded and re-fermented corn straw treatment group, which increased 2.6g / d compared with the fermented corn straw treatment group, but had no significant difference with the fermented corn straw group (P0.05), but was extremely significant (P0.01) compared with the extruded corn straw group and the common corn straw group (P0.01), and was higher than that of the fermented corn straw treatment group (P0.01). The corn straw treatment group increased 16. 2% and 17. 333. 7% more than the common corn straw treatment group. There was no significant difference in the feed weight ratio, slaughter rate, total muzzle rate, pectoral muscle rate and leg muscle rate among the four groups (P0.05). The four treatments had no effect on the ratio of feed to weight, slaughtering rate, total evisceration rate, pectoral muscle rate and leg muscle rate.
【学位授予单位】：沈阳农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S829.1
，
本文编号：2174328
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