本试验旨在研究苜蓿草颗粒饲料对鹅屠宰性能、器官和血液生化指标的影响。选用21日龄、体重相近（出壳时间和体重基本一致）、健康的扬州鹅300只，将其随机分为5组，分别为对照组、试验Ⅰ组、试验Ⅱ组、试验Ⅲ组和试验Ⅳ组，每组3个重复，每个重复20只，整个饲养试验期7周。前3周添加的苜蓿草粉依次为：0，8％，12％，16％和20％，而后4周添加的苜蓿草粉依次为：0，12％，16％，20％和24％。结果表明，1）42和70日龄，试验Ⅲ组鹅的宰前活重、半净膛重、全净膛重、腿肌重、胸肌重和胫骨重均显著高于对照组（P ＜0．05）；2）42和70日龄，试验Ⅱ组鹅胸腺重量和试验Ⅲ组肝脏重量显著高于对照组（P ＜0．05）；3）42日龄，试验Ⅰ、Ⅲ和Ⅳ组鹅血清的 TG、TC 和LDL 含量显著低于对照组（P ＜0．05），而 HDL 则显著高于对照组（P ＜0．05）；70日龄，试验Ⅰ、Ⅲ和Ⅳ组鹅血清的TC 和 HDL 含量显著高于对照组（P ＜0．05），而各组 TG 含量差异不显著。综上所述，苜蓿草粉颗粒饲料能够提高扬州鹅屠宰性能，促进器官发育和改善血液生化指标。从本试验结果来看，21～42日龄和43～70日龄，苜蓿草粉最佳添加水平分别为16％和20％。%To investigate effects of alfalfa pellet feed on slaughter performance,organs and blood biochemical indices of geese,300 healthy Yangzhou geese at 21 d were chosen and randomly divided into 5 groups (control group and trial groups Ⅰ to Ⅳ)with 3 replicates in each group and 20 geese per replicate.The trial period las-ted for 7 weeks.The diets of different groups were supplemented with 0 (control group),8% (group Ⅰ), 12% (group Ⅱ),16% (group Ⅲ)and 20% (group Ⅳ)alfalfa meal in the first 3 weeks,and 0 (control group),12% (groupⅠ),16% (groupⅡ),20% (group Ⅲ)and 24% (group Ⅳ)in the last 4 weeks,respec-tively.Key results were:1 )the live weight,semi-eviscerated weight,eviscerated weight,muscle weight, breast muscle weight and tibia weight of geese in group Ⅲ were significantly higher than those in the control group at 42 and 70 days;2)the thymus weight of geese in group Ⅱ and the liver weight of geese in group Ⅲwere significantly higher than those in the control group (P <0.05)at 42 and 70 days;3)at 42 days,the levels of TG,TC and LDL of serum in all trial groups except group Ⅱ were significantly lower than those in the con-trol group (P <0.05).In contrast,the control group had significantly higher serum HDL levels than the trial groups.At the 70 days,the levels of TC and HDL of serum in all experimental groups except group Ⅱ were significantly higher than those in control group (P <0.05)but TG levels did not differ between groups.In con-clusion,this study indicates that alfalfa pellet diet supplementation can improve slaughter performance,organ development and blood biochemical indices of Yanzhou geese.The optimum levels of alfalfa meal in diet for geese were 16% and 20% at 21 to 42 days and 43 to 70 days,respectively.
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