CAJ | 학술논문

为探讨等消化能、等氨基酸平衡模式下，不同日粮可消化赖氨酸（DLys）水平对40～70 kg 后备母猪生长性能、血清指标的影响，选用120头体况相似、平均体重约为40．00 kg 的长大二元母猪，随机分成4组，每个组3个重复，每个重复10头猪，分别饲喂 DLys 水平为0．68％（试验1组）、0．73％（试验2组）、0．78％（试验3组）、0．83％（试验4组）的玉米豆粕型日粮，试验期38 d。结果表明，试验3组平均日增重（ADG）最大（787．43 g），料重比（F／G）最低（2．55）；试验3组血清尿素氮（BUN）含量显著低于其他试验组（P ＜0．05）；血清 IGF-Ⅰ、T3和 T4含量各组间差异不显著（P ＞0．05）；试验3组血清游离赖氨酸、苏氨酸含量显著低于或明显低于1组、2组和4组。由此可见，在本试验条件下，长大后备母猪40～70 kg 阶段适宜日粮 DLys水平为0．78％，以消化能浓度表示为0．57 g·MJ －1。
위탐토등소화능、등안기산평형모식하，불동일량가소화뢰안산（DLys）수평대40～70 kg 후비모저생장성능、혈청지표적영향，선용120두체황상사、평균체중약위40．00 kg 적장대이원모저，수궤분성4조，매개조3개중복，매개중복10두저，분별사위 DLys 수평위0．68％（시험1조）、0．73％（시험2조）、0．78％（시험3조）、0．83％（시험4조）적옥미두박형일량，시험기38 d。결과표명，시험3조평균일증중（ADG）최대（787．43 g），료중비（F／G）최저（2．55）；시험3조혈청뇨소담（BUN）함량현저저우기타시험조（P ＜0．05）；혈청 IGF-Ⅰ、T3화 T4함량각조간차이불현저（P ＞0．05）；시험3조혈청유리뢰안산、소안산함량현저저우혹명현저우1조、2조화4조。유차가견，재본시험조건하，장대후비모저40～70 kg 계단괄의일량 DLys수평위0．78％，이소화능농도표시위0．57 g·MJ －1。
The study was conducted to evaluate the effects of four dietary digestible lysine levels on the growth performance and serum indices of replacement gilts from 40 to 70 kilograms based on corn-soybean meal with iso-energy and the same ideal amino acid pattern.A total of one hundred and twenty two-line crossbred gilts (Landrace ×Large White),with 40 kg of average body weigh and similar body conditions were allocated to four groups with three replicates per group and ten per replicate.The gilts were fed with four diets with different digestible lysine (DLys)levels of 0.68% (trial group 1 ),0.73% (trial group 2),0.78% (trial group 3)and 0.83% (trial group 4).The results showed that average daily gain (ADG)(787.43 g)were highest and F/G (2.55 )were lowest in trial group 3 (P <0.05 ),the concentration of BUN was significantly lower than that in other trial groups (P <0.05),and the concentration of IGF-Ⅰ was no significant difference among the trial groups (P > 0.05 ).In conclusion,the optimum level of DLys in replacement gilt weighting 40 to 70 kg based on this experiment were 0.78%,or 0.57 g·MJ-1 as expressed with digestive energy (DE).