饲料工业2026，Vol.47Issue(12)：65-70,6.DOI:10.13302/j.cnki.fi.2026.12.009
苜蓿粉碎粒度对生长肉兔屠宰性能、血清生化指标和胃肠道厚度的影响
Effects of Alfalfa Particle Size on Slaughter Performance,Serum Biochemical Parameters and Gastrointestinal Wall Thickness in Growing Meat Rabbits
摘要
Abstract
This study aimed to systematically evaluate the effects of alfalfa particle size on slaughter perfor-mance,serum biochemical parameters,and gastrointestinal tissue structure in growing meat rabbits.A total of 120 weaned New Zealand rabbits aged(35±2)days were randomly allocated into four groups and fed diets containing alfalfa meal with particle sizes of 2 500 µm,1 000 µm,100 µm,and 10 µm,respectively.The groups were designated as the group 2 500,group 1 000,group 100,and group 10.The experimental period lasted 42 days.The results showed that alfalfa particle size had no significant impact on slaughter perfor-mance(P>0.05).However,the kidney index in the 100 and 10 groups was significantly higher than that in the control group(P<0.01).Serum urea concentration was significantly lower in the 100 group than in the other three groups(P<0.05),while glucose concentration was significantly higher in the 1 000 group than in the 10 group(P<0.05).Alkaline phosphatase activ-ity increased progressively with decreasing par-ticle size(P<0.01).For gastrointestinal structure,jejunal wall thickness was significantly greater in the control group than in the 10 group(P<0.05),while ileal wall thickness was significantly greater in the 100 group than in the control(P<0.01).The cecal mucosa was thickest in the 1 000 group,and the gastric mucosa was significantly thicker in the 100 group than in the other groups(P<0.01).In summary,although ultrafine grinding of alfalfa enhanced the digestive and metabolic functions of meat rabbits,it also caused certain structural damage to the gastrointes-tinal tract and did not improve slaughter performance.Therefore,excessively fine alfalfa particle sizes are not recommended in rabbit feed processing.A particle size range of 100-1 000 µm is considered optimal for achieving balanced growth performance and production efficiency.关键词
苜蓿/粉碎粒度/屠宰性能/血清生化/肠道厚度Key words
alfalfa/particle size/slaughter performance/serum biochemistry/intestinal thickness分类
农业科技引用本文复制引用
柳思强,曹忠正,魏帅杰,屈丰乐,慎思,李嘉彤,宫玉杰..苜蓿粉碎粒度对生长肉兔屠宰性能、血清生化指标和胃肠道厚度的影响[J].饲料工业,2026,47(12):65-70,6.基金项目
河南省自然科学基金项目[262300422104] （）
2025年河南省"科技副总"项目[HNFZ20250359] （）
河南农业大学高层次人才专项[30501855] （）
