CAJ | 학술논문

试验采用单因子完全随机试验设计,研究了不同的维生素D3水平(0、400、800、1200、1600、2000、3000 IU/kg)及25-羟维生素D3(25-OH-D3)水平(0、10、20、30、40、50、75μg/kg)对1~14日龄北京鸭生产性能的影响,进而探讨1~14日龄北京鸭维生素D3及25-OH-D3需要量.选取1040只体重基本一致、健康的1日龄雄性北京鸭,随机分为13个处理,每处理8个重复,每重复10只鸭.结果表明,维生素D形式对1~14日龄北京鸭平均日增重、日采食量、料重比和死亡率均无显著影响(P>0.05),维生素D水平对1~14日龄北京鸭平均日增重、日采食量、料重比均有显著的影响(P<0.05),但维生素D缺乏组试验鸭无明显缺乏症.以平均日增重为评价指标,依据二次曲线模型和折线模型估测1~14日龄北京鸭维生素D3和25-OH-D3的需要量分别为1849.8 IU/kg(P=0.0206)和38.1μg/kg(P=0.0294).
시험채용단인자완전수궤시험설계,연구료불동적유생소D3수평(0、400、800、1200、1600、2000、3000 IU/kg)급25-간유생소D3(25-OH-D3)수평(0、10、20、30、40、50、75μg/kg)대1~14일령북경압생산성능적영향,진이탐토1~14일령북경압유생소D3급25-OH-D3수요량.선취1040지체중기본일치、건강적1일령웅성북경압,수궤분위13개처리,매처리8개중복,매중복10지압.결과표명,유생소D형식대1~14일령북경압평균일증중、일채식량、료중비화사망솔균무현저영향(P>0.05),유생소D수평대1~14일령북경압평균일증중、일채식량、료중비균유현저적영향(P<0.05),단유생소D결핍조시험압무명현결핍증.이평균일증중위평개지표,의거이차곡선모형화절선모형고측1~14일령북경압유생소D3화25-OH-D3적수요량분별위1849.8 IU/kg(P=0.0206)화38.1μg/kg(P=0.0294).
An experiment was conducted to evaluate the effects of cholecalciferol (vitamin D3) and 25-hydroxycholecalciferol (25-OH-D3) on growth performance of Peking ducks from 1 to 14 days of age. Cholecalciferol (vitamin D3) and 25-hydroxycholecalciferol (25-OH-D3) were used to provide 0, 400, 800, 1 200, 1 600, 2 000, 3 000 IU/kg of vitamin D3 activity and 0, 10, 20, 30, 40, 50, 75 μg/kg of 25-OH-D3 in a nutritionally completed corn-soybean meal diet. One thousand and fourty one-day-old male Peking ducks were randomly divided into 13 groups with 8 replicates in each group and 10 ducks in each replicate. Results showed that average dai?ly gain(ADG), average daily feed intake(ADFI) and feed conversion(FCR) were increased signifi?cantly by increasing vitamin D levels(P<0.05). However, no significant differences in ADG, AD?FI, FCR or mortality were observed among or between source of vitamin D(P>0.05). No deficien?cy disease was observed during the experimental period. According to the quadratic model and bro?ken-line model, the cholecalciferol and 25-cholecalciferol requirements of ADG are 1 849.8 IU/kg (P=0.020 6)and 38.1μg/kg(P=0.029 4),respectively.