基础饲粮类型对生长猪豆粕回肠氨基酸消化率评定的影响  

Effects of Basal Diet Type on the Determination of Soybean Meal True Ileal Digestibility of Amino Acids for Growing Pigs

作　　者：刘正群 刘静波[1,2] 陈亮[1] 朱丽媛[1] 孟庆石[1] 张宏福[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京100193 [2]西南科技大学生命科学与工程学院,绵阳621010

出　　处：《畜牧兽医学报》2017年第2期280-288,共9页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：国家科技支撑计划项目(2012BDA39B01;2013BAD21B02-01);中国农业科学院科技创新工程(ASTIP-IAS07)

摘　　要：本试验旨在使用线性回归法和差量法研究基础饲粮类型对生长猪氨基酸回肠真消化率(TID)的影响。选用32头初始体重为(28.9±0.7)kg安装了简单T型瘘管的生长公猪,采用有重复的8×2不完全拉丁方设计,8种试验饲粮,进行2期消化试验。8种试验饲粮包括2种基础饲粮类型(玉米淀粉组和玉米组)和4种豆粕添加水平(0,13%,26%和39%)。每期消化试验包含7d,其中5d的饲粮适应期和2d的回肠食糜收集期。结果表明,除赖氨酸、精氨酸和脯氨酸外,以玉米为主的基础饲粮中回肠总氮和氨基酸排泄量显著高于以玉米淀粉为主的基础饲粮(P<0.01)。除脯氨酸外,生长猪回肠总氮和氨基酸排泄量随饲粮豆粕添加水平提高呈线性显著增加(P<0.01)。使用差量法测定氨基酸TID时,以玉米为主基础饲粮中总氮和甘氨酸的TID显著高于以玉米淀粉为主的基础饲粮(P<0.05),但玉米淀粉为主的基础饲粮中蛋氨酸和赖氨酸TID显著高于玉米为主的基础饲粮(P<0.05),基础饲粮类型对其他氨基酸TID无显著影响(P>0.05)。使用线性回归法测定氨基酸TID时,生长猪饲喂以玉米淀粉为主的基础饲粮和以玉米为主的基础饲粮对总氮和氨基酸的TID均无显著差异(P>0.05)。由此可见,生长猪对总氮和氨基酸TID的测定不受基础饲粮类型的影响。The present study was conducted to investigate the effects of basal diet type on the determination of true ileal digestibility（TID）of nitrogen（N）and amino acids（AA）for growing pigs by the linear regression method and the difference method.A total of 32barrows（initial BW,（28.9±0.7）kg）fitted with T-cannula were used in an 8 × 2incomplete Latin square design including 8diets and 2digestibility tests.The 8experimental diets consisted of 2types of basal diet（cornstarch or corn）,and 4graded levels of soybean meals（0,13%,26% or 39%）.Each test consisted of a 5-d adjustment period and a 2-d ileal digesta collection period.The results showed that the ileal outputs of N and the most of AA,except for Lys,Arg and Pro,were grea-ter in pigs fed the corn basal diets than those fed the cornstarch basal diets（P0.01）.And for growing pigs,ileal outputs of N and the most of AA,except for Pro,increased linearly as soybean meal levels increased in diets（P0.01）.The result obtained from the difference method showed that,pigs fed the corn basal diets had greater TID of N and Gly compared with the pigs fed the cornstarch basal diets,whereas the TID of Met and Lys was lower for pigs fed the corn basal diets than the cornstarch basal diets（P0.05）.In addition,TID of other AA was not effected by basal diet types（P0.05）.Values of TID of the most of AA for growing pigs determined by the regression method were not affected by the basal diets types（P0.05）.In summary,the determination of TID of N and AA for growing pigs was not affected by the basal diet types.

关 键 词：基础饲粮 氨基酸 回肠真消化率 生长猪 线性回归法 差量法 

分 类 号：S828[农业科学—畜牧学] S816[农业科学—畜牧兽医]