摘要
文章旨在探究不同粒度高粱替代玉米对饲料加工特性和肥猪生长性能的影响。试验将120只体重相近、健康的杜×长×大三元杂交育肥猪随机分为6组,即对照组(基础日粮)、试验组(高粱替代100%玉米,筛片孔径:1.5/2.0 mm、2.0/2.0 mm、2.0/2.5 mm、2.5/2.5 mm、2.5/3.0 mm)。每组5个重复,每个重复4头猪,公母各50%,采用公母混养圈养方式饲养90 d。结果表明,随着筛片孔径的增加,饲料的几何平均粒径、颗粒硬度随之增加,耐久性随之下降。除个别组间比较无显著性差异外(P> 0.05),其他组间比较均存在显著性差异(P <0.05);2.5/2.5 mm组的末重[(122.76±7.14)kg]、平均日增重[(0.84±0.06)kg]均最高,与其他组比较均存在显著差异(P <0.05);随着筛片孔径的增加,除2.5/2.5 mm组外,猪养分干物质表观消化率随之降低,除对照组与2.0/2.0 mm组间比较无显著差异外(P> 0.05),其他组间比较均存在显著差异(P <0.05);随着筛片孔径的增加,猪养分粗蛋白质表观消化率呈不规律变化。结论 :用高粱替代玉米,对饲料加工特性影响显著,而对肥猪生长性能无显著影响,且随着高粱粉碎粒度的增加,饲料加工特性及肥猪的生长性能均发生显著改变。
To investigate the effects of sorghum with different grain sizes replacing corn on feed processing characteristics and growth performance of fattening pigs.A total of 120 healthy Duroc×Landrace×large hybrid fattening pigs with similar body weight were randomly divided into 6 groups,namely control group(basal diet)and experimental group(100%corn replaced by sorghum),with screen size:(1.5/2.0 mm,2.0/2.0 mm,2.0/2.5 mm,2.5/2.5 mm,2.5/2.5 mm,2.5/3.0 mm).There were 5 replicates in each group and 4 pigs in each replicate(50%male and 50%female).The pigs were fed in mixed breeding for 90 days.The results showed that,with the increase of screen size,the geometric mean particle size and particle hardness of feed increase,and the durability of feed decreases.There were significant differences among other groups(P<0.05)except that there was no significant difference among individual groups(P>0.05).The final weight[(122.76±7.14)kg]and average daily gain[(0.84±0.06)kg]in 2.5/2.5 mm group were the highest,and there were significant differences compared with other groups(P<0.05);With the increase of sieve size,the apparent digestibility of porcine nutrient dry matter decreased with the exception of 2.5/2.5 mm group.There were significant differences between control group and 2.0/2.0 mm group(P>0.05),but there were significant differences between other groups(P<0.05);The apparent digestibility of pig nutrient crude protein changed irregularly with the increase of sieve size.Conclusion:Replacing corn with sorghum has a significant effect on feed processing characteristics,but no significant effect on growth performance of fattening pigs.With the increase of grain size of sorghum,feed processing characteristics and growth performance of fattening pigs have significant changes.Among them,the growth performance of pigs in 2.5/2.5 mm group[geometric mean particle size:(360.02±3.28)m]was better.
作者
乔念民
QIAO Nianmin(Jiaxiang County Animal Husbandry and Veterinary Industry Development Center,Jiaxiang,Shandong Province 272400,China)
出处
《中国饲料》
北大核心
2024年第8期120-123,共4页
China Feed
关键词
不同粒度
高粱
玉米
饲料加工特性
肥猪生长性能
different granularity
a surname
corn
feed processing characteristics
growth performance of fat pigs
