CAJ | 학술논문

本试验先后进行2次试验研究饲粮棉籽粕水平对不同生长阶段肉鸭屠宰性能的影响,并进一步根据屠宰性能探讨肉鸭饲粮棉籽粕的适宜水平。试验1、2均采用单因素试验设计,试验1饲粮棉籽粕水平分别为0、8.28%、16.56%、24.83%、33.11%；试验2饲粮棉籽粕水平分别为0、5.83%、11.60%、17.50%、23.30%。试验1肉鸭1~21日龄采食试验饲粮,22~35日龄采食无棉籽粕的玉米-豆粕型饲粮；试验2肉鸭1~14日龄采食无棉籽粕饲粮,15~35日龄采食试验饲粮。35日龄时每个试验的每个重复屠宰1只肉鸭测定其屠宰性能。结果表明：1)在试验1中,随饲粮棉籽粕水平的增加,肉鸭半净膛率与全净膛率线性增加( P<0.05),16.56%棉籽粕组肉鸭腹脂重和腹脂率显著低于其他各组( P<0.05)。2)在试验2中,随饲粮棉籽粕水平的增加,饲粮棉籽粕水平线性或二次影响肉鸭活体重、半净膛重、全净膛重和胸肌重( P<0.05),二次影响肉鸭的屠体重( P<0.05),23.30%棉籽粕组肉鸭活体重、半净膛重、全净膛重、胸肌重及胸肌率显著低于其他各组(P<0.05)。3)基于不同的屠宰指标肉鸭饲粮棉籽粕适宜水平为7.51%~14.78%。以上结果提示,在以可消化氨基酸平衡模式配制饲粮时,1~21日龄肉鸭采食棉籽粕高达33.11%饲粮,22~35日龄采食玉米-豆粕型饲粮对35日龄屠宰性能无显著影响；结合35日龄屠宰性能来考虑,15~35日龄肉鸭饲粮棉籽粕水平不宜超过14.78%。
본시험선후진행2차시험연구사량면자박수평대불동생장계단육압도재성능적영향,병진일보근거도재성능탐토육압사량면자박적괄의수평。시험1、2균채용단인소시험설계,시험1사량면자박수평분별위0、8.28%、16.56%、24.83%、33.11%；시험2사량면자박수평분별위0、5.83%、11.60%、17.50%、23.30%。시험1육압1~21일령채식시험사량,22~35일령채식무면자박적옥미-두박형사량；시험2육압1~14일령채식무면자박사량,15~35일령채식시험사량。35일령시매개시험적매개중복도재1지육압측정기도재성능。결과표명：1)재시험1중,수사량면자박수평적증가,육압반정당솔여전정당솔선성증가( P<0.05),16.56%면자박조육압복지중화복지솔현저저우기타각조( P<0.05)。2)재시험2중,수사량면자박수평적증가,사량면자박수평선성혹이차영향육압활체중、반정당중、전정당중화흉기중( P<0.05),이차영향육압적도체중( P<0.05),23.30%면자박조육압활체중、반정당중、전정당중、흉기중급흉기솔현저저우기타각조(P<0.05)。3)기우불동적도재지표육압사량면자박괄의수평위7.51%~14.78%。이상결과제시,재이가소화안기산평형모식배제사량시,1~21일령육압채식면자박고체33.11%사량,22~35일령채식옥미-두박형사량대35일령도재성능무현저영향；결합35일령도재성능래고필,15~35일령육압사량면자박수평불의초과14.78%。
This paper included two experiments which were conducted to investigate the effects of dietary cot-tonseed meal ( CSM) level on slaughter performance of meat ducks during different growth phases, and to ex-plore the optimal dietary CSM level based on slaughter performance. Experiments 1 and 2 were all used the sin-gle factor experimental design. The dietary CSM levels in experiment 1 were 0, 8.28%, 16.56%, 24.83% and 33.11%, respectively; the dietary CSM levels in experiment 2 were 0, 5. 83%, 11. 60%, 17. 50% and 23.30%, respectively. In experiment 1, ducks fed test diets during 1 to 21 days of age, and then fed corn-soy-bean meal diets without CSM during 22 to 35 days of age. In experiment 2, ducks fed a normal diet without CSM during 1 to 14 days of age, and then fed test diets during 15 to 35 days of age. At 35 days of age, one duck per replicate was slaughtered in each experiment to determine the slaughter performance. The results showed as follows: 1) in experiment 1, the eviscerated with giblet yield and eviscerated yield of ducks in-creased in a linear manner with the increasing of dietary CSM level (P<0.05), but the abdominal fat weight and abdominal fat yield of ducks in 16.56% CSM group were significant lower than those in other groups ( P<0.05) . 2) In experiment 2, dietary CSM level had linearly and quadratic effects on the live weight, eviscerated with giblet weight, eviscerated weight and breast meat weight of ducks with the increasing of dietary CSM level ( P<0.05) , and had a quadratic effect on the carcass weight ( P<0.05) . The live weight, eviscerated with gib-let weight, eviscerated weight, breast meat weight and breast meat yield of ducks in 23.30% CSM group were significant lower than those in other groups ( P<0. 05 ) . 3 ) The optimal dietary CSM level was 7. 51% to 14.78% of ducks based on different slaughter indexes. These results suggest that meat ducks aged from 1 to 21 days fed the diet containing 33.11% CSM which formulated based on digestible amino acid, and then fed the corn-soybean meal diet from 22 to 35 days of age have no effect on slaughter performance. Based on slaughter performance, the optimal level of CSM in diets of ducks aged from 15 to 35 days should not exceed 14.78%.