摘要
It was studied the better digestible lysine:metabolizable energy (LIS:ME) and the effects of LIS and ME levels on performance and nitrogen retention in nursery piglets. In assay 1, 216 commercial piglets from 6.98 ± 1.16 kg (initial weight) at approximately 12 ± 0.62 kg were used and in the assay 2, 48 similar piglets at 9.31 ± 2.09 kg. The LIS levels were: 1.223, 1.302, 1.390 and 1.497% and ME: 3,510, 3,700 and 3,830 kcal/kg and were assigned in 3 × 4 factorial arrangement and distributed in randomized block design. On piglets performance there was interaction of LIS and ME for piglets weight gain and feed:gain. The response for LIS on weight gain was linear ascendant in diets with 3,510 kcal and 3,830 kcal ME. In feed:gain was observed quadratic effect of LIS in diets with 3,510 kcal and linear effect of LIS in diets with 3,830 kcal ME. The quadratic effect of LIS in 3,510 kcal ME diets indicated as a optimal level 1.44% of LIS or 4.16 g LIS/Mcal of ME. The positive linear response in feed: gain with LIS inclusion in 3,830 kcal EM diets indicated that piglets respond efficiently at amino acid increase when energy level is high. In metabolism study the ME increases suggest higher N retention, whereas the LIS increases suggest reduction in N retention or in ME Mcal:LIS % rate. The observed interaction in two assays however indicate that LIS:ME rate depend of energetic level and considered characteristics. In present conditions the change of LIS and ME indicate 1.44% or 4 g LIS/Mcal ME that correspond around 7.8 g LIS/day of ingestion.
摘要译文
有人研究了较好的可消化赖氨酸：代谢能（LIS：ME）和LIS和ME水平上幼儿园仔猪生产性能和氮潴留的影响。在测定1中，216从6.98±1.16公斤（初始重量）在大约12±0.62千克商用仔猪进行与在测定2中，在9.31±2.09千克48相似的仔猪。该LIS水平分别为：1.223，1.302，1。390和1.497％和ME：3510，3700和3830大卡/千克，并在指定的3×4的阶乘安排，并分布在随机区组设计。对仔猪的表现有LIS和ME的仔猪增重和饲料互动：增益。对于LIS对体重增加的反应是在饮食与3510大卡和3830大卡ME直线上升。在饲料：增观察LIS的饮食二次效应与LIS的饮食与3,830大卡ME 3510大卡和非线性效应。 LIS中3的二次效应，510千卡ME饮食表示为LIS或ME4.16克LIS / 1000千卡的最佳水平1.44％。在饲料中添加的正的线性响应：增益与LIS列入3，830千卡的EM饮食表明仔猪在氨基酸的增加有效地作出响应时的能量电平为高。在代谢研究中，ME增加表明高N潴留，而LIS增加表明减少氮沉积或ME兆卡：LIS％的税率。两个实验中观察到的互动但是表明LIS：ME率取决于精力充沛水平，考虑的特点。在目前的条件LIS的变化和ME显示1。44％或4克LIS / 1000千卡ME对应各地7.8克LIS /摄入的一天。
TRINDADE NETO, Messias Alves da; BERTO, Dirlei Antonio; ALBUQUERQUE, Ricardo de ; SCHAMMASS, Eliana Aparecida. Digestible lysine:metabolizable energy ratio for nursery piglets[J]. Revista Brasileira de Zootecnia, 2009,38(7): 1291-1300