日粮赖氨酸水平对桂科商品猪生长性能、营养物质表观消化率及血清游离氨基酸的影响
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摘要
为探讨不同赖氨酸水平日粮对(60~90)kg阶段桂科商品猪生长性能、营养物质表观消化率及血清游离氨基酸的影响,试验选用平均体重为(60±1.5)kg的桂科商品猪24头,随机分为4组(试验Ⅰ组、试验Ⅱ组、试验Ⅲ组、试验Ⅳ组),每组6头,分别饲喂赖氨酸水平为0.67%、0.72%、0.79%、0.86%的玉米-豆粕型日粮,预试期7d,试验期45d。结果表明,试验Ⅱ组(0.72%)日增重显著高于试验Ⅲ组(0.79%)、试验Ⅳ组(0.86%)(P<0.05),与试验Ⅰ组(0.67%)差异不显著(P>0.05);试验Ⅱ组(0.72%)料重比显著低于其他组(P<0.05);试验Ⅱ组(0.72%)粗蛋白质及无氮浸出物的表观消化率显著高于其他组(P<0.05);试验Ⅱ组(0.72%)血清游离赖氨酸水平显著高于试验Ⅰ组(0.67%)、试验Ⅳ组(0.86%)。日粮中0.72%的赖氨酸水平可促进(60~90)kg阶段桂科商品猪对营养物质的消化吸收,改善机体氨基酸平衡,进而提高猪只的生长性能。
To explore the effect of different dietary lysine level on growth performance(60-90)kg phase in the Gui commercialpigs,nutrient apparent digestibilities and serum free amino acid,an average body weight of(60 + 1.5)kg of 24 commercialpigs,were randomly divided into 4 groups(Experiment groupⅠ,Ⅱ,ⅢandⅣ,n=6),which were fed a lysine level of 0.67%,0.72%,0.79%,0.86% of the corn/soybean meal diet.The pre-experimental period was 7 d,and the test lasted for 45 d.The results showed that the daily gain of experimental groupⅡ(0.72%)was significantly higher than that of experiment group Ⅲ(0.79%)and group Ⅳ(0.86%)(P<0.05),but there was no significant difference with that of groupⅠ(0.67%)(P>0.05);the feed weight ratio of experimental group Ⅱ(0.72%)was significantly lower than that of the other groups(P<0.05);the digestibility of crude protein and nitrogen free extract in group Ⅱ(0.72%)was significantly higher than that of the other groups(P<0.05);the serum free lysine level of groupⅡ(0.72%)was significantly higher than that of group Ⅰ(0.67%)and group Ⅳ(0.86%).The level of lysine 0.72%in diets could promote the digestion and absorption of nutrients in the stage of(60-90)kg Gui pigs,and improve body amino acid balance,and the growth performance.
To explore the effect of different dietary lysine level on growth performance(60-90)kg phase in the Gui commercialpigs,nutrient apparent digestibilities and serum free amino acid,an average body weight of(60 + 1.5)kg of 24 commercialpigs,were randomly divided into 4 groups(Experiment groupⅠ,Ⅱ,ⅢandⅣ,n=6),which were fed a lysine level of 0.67%,0.72%,0.79%,0.86% of the corn/soybean meal diet.The pre-experimental period was 7 d,and the test lasted for 45 d.The results showed that the daily gain of experimental groupⅡ(0.72%)was significantly higher than that of experiment group Ⅲ(0.79%)and group Ⅳ(0.86%)(P<0.05),but there was no significant difference with that of groupⅠ(0.67%)(P>0.05);the feed weight ratio of experimental group Ⅱ(0.72%)was significantly lower than that of the other groups(P<0.05);the digestibility of crude protein and nitrogen free extract in group Ⅱ(0.72%)was significantly higher than that of the other groups(P<0.05);the serum free lysine level of groupⅡ(0.72%)was significantly higher than that of group Ⅰ(0.67%)and group Ⅳ(0.86%).The level of lysine 0.72%in diets could promote the digestion and absorption of nutrients in the stage of(60-90)kg Gui pigs,and improve body amino acid balance,and the growth performance.
引文
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[10]MALMLOF K.Amino acid in farm animal nutrition metabolism partition and consequences of imbalance[J].Swedish Journal of Agriculture Research,1988,18(4):191-193.
[11]YANG Y X,JIN Z,YOON S Y.Lysine restriction during grower phase on growth performance,blood metabolites,carcass traits and pork quality in grower finisher pigs[J].Acta Agriculture Scandinavica,Section A-Animal Science,2008,58:14-22.
[12]曾佩玲,张常明,王修启,等.日粮不同赖氨酸水平对生长猪养分表观消化率、血清氨基酸含量和生化指标的影响[J].华北农学报,2009,24(s2):116-120.
[13]GOODBAND R D,NELSSEN J I,HINES R H,et al.Influence of dietary lysine level on whole-body protein turnover plasma igfigh and insulin concentration in growing pigs[J].Live-stock Science,2007,110(1-2):126-132.
[2]罗钧秋,陈代文.赖氨酸对蛋白质代谢的影响及其可能调控机制[J]饲料工业,2006,27(16):40-42.
[3]燕富永,孔祥峰,印遇龙.猪赖氨酸营养研究进展[J].饲料工业,2007,28(17):16-18.
[4]D MELLO J P F.Amino acids in animal nutrition[M].Wallingford U K:CABI Publing,2003,109(1/2/3/4):217.
[5]TANG Z Y,XU W J,YANG Z H,et al.Measurement of free amino acid of biological fluids by reversed-phase HPLC and clinical application[J].Chin J Lab Med(中华医学检验杂志),1994,17:140-143.
[6]周笑犁,印遇龙,孔祥峰,等.N-氨甲酰谷氨酸对环江香猪生长性能、营养物质消化率及血浆游离氨基酸含量的影响[J].动物营养学报,2011,23(11):1 970-1 975.
[7]ERIKA G,MESSIAS A D T N,BIRLEI A B,et al.Digestible lysine levels in diets for pigs from 24to 50kg under sanitary segregation[J].Revista Brasileire De Zootecnia,2010,41(9):2 039-2 047.
[8]BATTERHAM E S,ANDERSEN L M,BAIGENT D R,et al.Utilization of ileal digestible amino acids by growing pigs:Effect of dietary lysine concentration on efficiency of lysine retention[J].British Journal of Nulrition,1990,64(1):81-94.
[9]谯仕彦,李德发,张国龙,等.增加日粮赖氨酸水平对断奶仔猪生长、氮存留和血浆游离氨基酸含量的影响[J].中国畜牧杂志,1996(3):3-6.
[10]MALMLOF K.Amino acid in farm animal nutrition metabolism partition and consequences of imbalance[J].Swedish Journal of Agriculture Research,1988,18(4):191-193.
[11]YANG Y X,JIN Z,YOON S Y.Lysine restriction during grower phase on growth performance,blood metabolites,carcass traits and pork quality in grower finisher pigs[J].Acta Agriculture Scandinavica,Section A-Animal Science,2008,58:14-22.
[12]曾佩玲,张常明,王修启,等.日粮不同赖氨酸水平对生长猪养分表观消化率、血清氨基酸含量和生化指标的影响[J].华北农学报,2009,24(s2):116-120.
[13]GOODBAND R D,NELSSEN J I,HINES R H,et al.Influence of dietary lysine level on whole-body protein turnover plasma igfigh and insulin concentration in growing pigs[J].Live-stock Science,2007,110(1-2):126-132.