不同苜蓿草粉添加水平对妊娠母猪及其仔猪生产性能的影响

选用48头配种时间、胎次基本一致的大约克经产母猪,采用单因子完全随机设计,研究妊娠母猪饲粮中添加不同比例苜蓿草粉对母猪及仔猪生产性能和经济效益的影响。结果表明:(1)妊娠母猪饲粮中添加不同比例苜蓿草粉显著提高了泌乳期母猪的日采食量(P<0.05);减缓了泌乳期母猪背膘厚的下降幅度,但未达到显著水平(P>0.05)。(2)添加苜蓿草粉增加了初生仔猪数,与对照组相比,以添加量为200g/kg的处理组为最多,提高了12.78%(1.63头),但差异不显著;对初生窝重、仔猪生长与仔猪成活率影响不显著(P>0.05),但提高了断奶窝重和窝平均日增重(P<0.05)。(3)与对照组相比,各试验组经济效益亦有所提高,以添加量为200g/kg的试验组增幅最大,达30.73%。综合分析认为,苜蓿草粉在妊娠母猪饲粮中的添加量以200g/kg为宜。

Effect of adding different amount of alfalfa meal to gestational diet on the performance in sows and their piglets

Using a single-factor and randomized block design,48 multiparous Yorkshire sows,whose mating date and parity were similar,were selected in order to study the effects of adding different amount of alfalfa meal to gestatonal diet on performance of sows and their piglets and economic benefit.The result showed that:(1) It increased feed intake of diet and its nutrient ingredient(P<0.05);decreased the loss of Back-fat thickness during lactation,but they had no difference among the groups(P>0.05)?(2) Compared with the control group,piglets born of the treatment,which additive amount of alfalfa meal in diet was 200 g/kg,were enhanced most:12.78%(1.63 pig)(P>0.05);and there was no significant difference in born litter weight,piglet weight gain and survival rate of piglet (P>0.05),but additive alfalfa meal increased significantly the litter weight of weaned piglets and average litter daily weight gain (P<0.05).(3) Compared with the control group,economic benefit was also improved,and treatment 4 was best,which increased 30.73%.It indicated 200 g/kg was suitable additive level of alfalfa meal in gestational diet.