酵母提取物和喷雾干燥血浆蛋白粉的断奶仔猪氨基酸表观和标准回肠消化率  

Apparent and standardized ileal digestibility of amino acids in yeast extract and spray dried plasma protein by weanling pigs

作　　者：C.D.Mateo H.H.Stein 

机构地区：[1]美国布鲁金斯市南达科塔州立大学动物科学系,美国布鲁金斯市南达科塔州57007

出　　处：《饲料工业》2014年第14期62-64,共3页Feed Industry

摘　　要：研究的目的是测定酵母提取物(Yeast extract)和喷雾干燥血浆蛋白粉(SDPP)的粗蛋白质和氨基酸在断奶仔猪上的表观回肠消化率(AID)和标准回肠消化率(SID)。试验日粮包括:酪蛋白日粮、酪蛋白-SDPP日粮、酪蛋白-酵母提取物日粮和无氮日粮四种,采用差分法对酵母提取物和SDPP蛋白质及氨基酸的AID和SID值进行统计。试验结果表明,除半胱氨酸和丝氨酸外,酵母提取物和SDPP之间的粗蛋白质以及其它氨基酸的AID均相似;同时,酵母提取物和SDPP之间的粗蛋白质及各氨基酸的SID均无差异。本试验表明,酵母提取物和SDPP的蛋白质均能够被仔猪较好地消化。The objective of this experiment was to measure the apparent（AID） and standardized （SID） ileal digestibility of crude protein（CP） and amino acids（AA） in yeast extract and spray dried plasma protein （SDPP） by weanling pigs. A casein-based diet, a casein-SDPP diet, a casein-yeast extract diet, and a N-free diet were formulated and fed to weanling pigs. Values for AID and SID in yeast extract and SDPP were calculated using the difference procedure. Results showed that the AID for CP and all AA with the exception of Cys and Ser are similar between yeast extract and SDPP. Likewise, no differences in SID for CP or AA were observed between yeast extract and SDPP. The current data demonstrate that both yeast extract and SDPP contain protein that is relatively well digested by young pigs.

关 键 词：氨基酸 消化率 仔猪 SDPP 酵母提取物 

分 类 号：S816.32[农业科学—饲料科学]