CAJ | 학술논문

本研究旨在评估饲粮氯化胆碱对白来航蛋种鸡生产性能和血清生化指标的影响。选取240只48周龄白来航蛋种鸡，随机分成4组，每组5个重复，每个重复12只蛋种鸡。饲喂玉米-豆粕型基础饲粮，氯化胆碱添加水平分别是450、750、1050和1650 mg/kg，试验期13周。结果表明：1）各组蛋种鸡产蛋率差异不显著（ P＞0．05），450 mg/kg氯化胆碱组蛋种鸡成活率最低，与其他添加组有显著差异（ P＜0．05）。2）各组除蛋黄颜色（ P＜0．05），其他蛋品质指标差异不显著（ P＞0．05），750 mg/kg氯化胆碱组的鸡蛋蛋黄颜色最深；各组鸡蛋储存期差异不显著（ P＞0．05）。3）750 g/kg氯化胆碱组的蛋种鸡受精蛋孵化率最高，显著高于其他各组（ P＜0．05）。4）750 mg/kg氯化胆碱组的血清白蛋白含量显著高于其余各组（ P＜0．05），750 mg/kg氯化胆碱组的血清尿素氮、尿酸和甘油三酯含量显著低于450 mg/kg氯化胆碱组（ P＜0．05）。研究提示，适宜的氯化胆碱添加水平（750 mg/kg）可提高蛋种鸡产蛋后期的成活率和受精蛋孵化率，降低血清尿素氮、尿酸和甘油三酯含量。
본연구지재평고사량록화담감대백래항단충계생산성능화혈청생화지표적영향。선취240지48주령백래항단충계，수궤분성4조，매조5개중복，매개중복12지단충계。사위옥미-두박형기출사량，록화담감첨가수평분별시450、750、1050화1650 mg/kg，시험기13주。결과표명：1）각조단충계산단솔차이불현저（ P＞0．05），450 mg/kg록화담감조단충계성활솔최저，여기타첨가조유현저차이（ P＜0．05）。2）각조제단황안색（ P＜0．05），기타단품질지표차이불현저（ P＞0．05），750 mg/kg록화담감조적계단단황안색최심；각조계단저존기차이불현저（ P＞0．05）。3）750 g/kg록화담감조적단충계수정단부화솔최고，현저고우기타각조（ P＜0．05）。4）750 mg/kg록화담감조적혈청백단백함량현저고우기여각조（ P＜0．05），750 mg/kg록화담감조적혈청뇨소담、뇨산화감유삼지함량현저저우450 mg/kg록화담감조（ P＜0．05）。연구제시，괄의적록화담감첨가수평（750 mg/kg）가제고단충계산단후기적성활솔화수정단부화솔，강저혈청뇨소담、뇨산화감유삼지함량。
This study was aimed to evaluate the effects of choline chloride on performance and serum biochemi-cal indexes of white Leghorn breeding hens in late of peak production. A total of 240 white Leghorn breeding hens,48-week-old,were randomly divided into 4 groups with 5 replicates in each group and 12 breeding hens in each replicate. Hens in the four groups were fed corn-soybean basal diets supplemented with 450,750, 1 050 and 1 650 mg/kg choline chloride,respectively. The experiment lasted for 13 weeks. The research showed as follows:1)no significant difference of laying rate was found among all groups( P>0.05),and the livability of the 450 mg/kg choline chloride group was the lowest,which had a significant difference from oth-er groups( P<0.01). 2)Except the yolk color( P<0.05),no significant differences of egg quality were found among all groups(P>0.05). Yolk color of the 750 mg/kg choline chloride group was the highest. Choline chloride added level could not improve the ability of storing eggs( P>0.05). 3)The 750 mg/kg choline chlo-ride group had the highest fertile hatchability than other groups( P<0.05). 4)The 750 mg/kg choline chloride group had the highest serum albumin content than other groups( P<0.05). Serum urea nitrogen,urea acid and triglyceride contents of the 750 mg/kg choline chloride group were significantly lower than those of the 450 mg/kg choline chloride group( P<0.05). The research implies that the appropriate choline chloride added level(750 mg/kg)can improve the livability and fertile egg hatchability,reduce serum urea nitrogen,urea acid and triglyceride contents of breeding hens in late of peak production.