CAJ | 학술논문

研究日粮中不同赖氨酸水平对生长猪养分表观消化率、血清氨基酸含量和血清生化指标的影响.试验采用全收粪法进行,选用12头始重约为20 kg的长×大二元杂交阉公猪,按体重随机分为3个处理组,处理Ⅰ饲喂含赖氨酸0.65%的基础日粮,处理Ⅱ和处理Ⅲ在基础日粮中添加晶体赖氨酸盐酸盐,使赖氨酸含量分别为0.95%和1.25%,试验期为10 d.结果表明,该试验条件下,适宜的赖氨酸含量(处理Ⅱ组)使猪日粮养分表观消化率达到较好的水平,而降低赖氮酸含量(处理Ⅰ组)会使日粮能量、干物质、粗蛋白和磷的表观消化率显著降低(P<0.05);而降低或升高日粮赖氨酸水平会显著影响血清中丝氨酸(Ser)、谷氨酸(Clu)、苏氨酸(Thr)、半胱氨酸(Cys)、酪氨酸(Tyr)和赖氨酸(Lys)的含量(P<0.05或P<0.01);同时,处理Ⅰ组血清中血清尿素氮(BUN)和血清总蛋白(TP)的含量分别显著高于和低于处理Ⅱ组和处理Ⅲ组(P<0.05),但日粮不同赖氨酸水平对血清中血糖(GLU)、甘油三酯(TG)的含量无显著影响(P>0.05).结果表明,在本试验条件下,20～35 kg生长猪日粮总赖氨酸建议需要量为0.95%.
연구일량중불동뢰안산수평대생장저양분표관소화솔、혈청안기산함량화혈청생화지표적영향.시험채용전수분법진행,선용12두시중약위20 kg적장×대이원잡교엄공저,안체중수궤분위3개처리조,처리Ⅰ사위함뢰안산0.65%적기출일량,처리Ⅱ화처리Ⅲ재기출일량중첨가정체뢰안산염산염,사뢰안산함량분별위0.95%화1.25%,시험기위10 d.결과표명,해시험조건하,괄의적뢰안산함량(처리Ⅱ조)사저일량양분표관소화솔체도교호적수평,이강저뢰담산함량(처리Ⅰ조)회사일량능량、간물질、조단백화린적표관소화솔현저강저(P<0.05);이강저혹승고일량뢰안산수평회현저영향혈청중사안산(Ser)、곡안산(Clu)、소안산(Thr)、반광안산(Cys)、락안산(Tyr)화뢰안산(Lys)적함량(P<0.05혹P<0.01);동시,처리Ⅰ조혈청중혈청뇨소담(BUN)화혈청총단백(TP)적함량분별현저고우화저우처리Ⅱ조화처리Ⅲ조(P<0.05),단일량불동뢰안산수평대혈청중혈당(GLU)、감유삼지(TG)적함량무현저영향(P>0.05).결과표명,재본시험조건하,20～35 kg생장저일량총뢰안산건의수요량위0.95%.
This paper was conducted to study the effect of different dietary lysine levels on apparent digestibility of nutrients and serum amino acid concentration and serum biochemical indexes in the growing pigs. The trial was used the total collection method. 12 cross-bred castrates(Large white Landrace)at about 20 kg BW were randomly allotted to three treatments on the basis of initial weight and size. The three treatments were fed basal diet containing 0.65% lysine,and 0.95% and 1.25% lysine respectively. The trial lasted 10 days. The results indicated that the apparent digestibility of dietary nutrients of treatment Ⅱ was best, in the experimental conditions. Decreasing the dietary lysine level(Treatment Ⅰ)had significantly lower the apparent digestibility of energy, dry matter, crude protein and phosphorus than the other two treatments (P<0.05). The concentrations of serine, glutamic acid, threonine, cysteine,tyrosine and lysine were significantly affected (P<0.05 or P<0.01)by increasing or decreasing dietary lysine levels. Meanwhile,the serum urinary nitrogen(BUN) and total serum protein(TP) contents of growing pigs in treatment Ⅰ were significantly higher and lower than treatment Ⅱ and treatment Ⅲ ,respectively(P<0.05) ,however, there were no significant influence in the concentrations of serum glucose(GLU) and serum triglyceride(TG)of growing pigs(P>0.05). The results suggest that the optimal lysine level in growing pigs(20-35 kg)was 0.95% , in the experimental conditions.