CAJ | 학술논문

本试验旨在研究锰对1~4周龄五龙鹅生长性能、屠宰性能、胫骨发育和酶活性的影响，以确定鹅饲粮中锰的适宜添加水平。试验选用1日龄体重相近的五龙鹅360只，随机分为6个组，每组6个重复，每个重复10只(公母各占1/2)。各组分别在基础饲粮(锰含量为20 mg/kg)中添加0(玉组)、30(II组)、60(Ⅲ组)、90(郁组)、120(吁组)、150 mg/kg(遇组)的锰。试验期为4周。结果表明：1)采用不相关比较法进行分析，饲粮锰添加水平为117.74 mg/kg时平均日增重最大，饲粮锰添加水平为105.71 mg/kg时料重比最低。2)吁组屠宰率、半净膛率、全净膛率和腿肌率显著或极显著高于玉组(P<0.05或P<0.01)，腹脂率极显著低于玉组(P<0.01)。3)郁、吁组骨密度、骨强度及粗灰分、钙含量显著或极显著高于玉组(P<0.05或P<0.01)。4)郁、吁组血清含锰超氧化物歧化酶(MnSOD)活性显著或极显著高于玉组(P<0.05或P<0.01)，肝脏苹果酸脱氢酶(MDH)和脂蛋白脂酶(LPL)活性显著或极显著低于玉组(P<0.05或P<0.01)。由此可见，适宜饲粮锰添加水平能够提高1~4周龄五龙鹅的生长性能、屠宰性能和胫骨发育，建议鹅饲粮中锰添加水平为105.71~117.74 mg/kg。
본시험지재연구맹대1~4주령오룡아생장성능、도재성능、경골발육화매활성적영향，이학정아사량중맹적괄의첨가수평。시험선용1일령체중상근적오룡아360지，수궤분위6개조，매조6개중복，매개중복10지(공모각점1/2)。각조분별재기출사량(맹함량위20 mg/kg)중첨가0(옥조)、30(II조)、60(Ⅲ조)、90(욱조)、120(우조)、150 mg/kg(우조)적맹。시험기위4주。결과표명：1)채용불상관비교법진행분석，사량맹첨가수평위117.74 mg/kg시평균일증중최대，사량맹첨가수평위105.71 mg/kg시료중비최저。2)우조도재솔、반정당솔、전정당솔화퇴기솔현저혹겁현저고우옥조(P<0.05혹P<0.01)，복지솔겁현저저우옥조(P<0.01)。3)욱、우조골밀도、골강도급조회분、개함량현저혹겁현저고우옥조(P<0.05혹P<0.01)。4)욱、우조혈청함맹초양화물기화매(MnSOD)활성현저혹겁현저고우옥조(P<0.05혹P<0.01)，간장평과산탈경매(MDH)화지단백지매(LPL)활성현저혹겁현저저우옥조(P<0.05혹P<0.01)。유차가견，괄의사량맹첨가수평능구제고1~4주령오룡아적생장성능、도재성능화경골발육，건의아사량중맹첨가수평위105.71~117.74 mg/kg。
This experiment was conducted to study the effects of manganese on growth performance, slaughter performance , tibia development and enzyme activities of Wulong geese aged from 1 to 4 weeks, and to find the appropriate supplemental level of manganese. A total of 360 one-day-old Wulong geese with similar average body weight were randomly divided into 6 groups with 6 replicates per group and 10 geese per replicate ( half male and half female) . Geese in the groups were fed the basal diet ( manganese content was 20 mg/kg) sup-plemented with 0 ( group Ⅰ) , 30 ( group II) , 60 ( group Ⅲ) , 90 ( group Ⅳ) , 120 ( group ⅴ) and 150 mg/kg ( group Ⅵ) manganese, respectively. The experiment lasted for 4 weeks. The results showed as follows: 1 ) using unrelated comparative analysis method, when the dietary manganese level was 117. 74 mg/kg, the average daily gain reached the highest, and when the dietary manganese level was 105. 71 mg/kg, the ratio of feed to gain reached the lowest. 2) The dressed percentage, percentage of half-e-viscerated yield, percentage of eviscerated yield and percentage of leg muscle in groupsⅣandⅴwere signifi-cantly higher than those in groupⅠ( P<0 . 05 or P<0 . 01 ) , and the percentage of abdominal fat in groupⅴwas significantly lower than that in group Ⅰ (P <0. 05). 3) The bone mineral density, bone strength, ash and calcium contents in groups Ⅳ and ⅴ were significantly higher than those in group Ⅰ ( P<0 . 05 or P<0 . 01 ) . 4 ) The serum manganese superoxide dismutase activity in groups Ⅳ and ⅴ was significantly higher than that in group Ⅰ ( P<0 . 05 or P<0 . 01 ) , and the activities of malic dehydrogenase and lipoproteinester-ase in liver in groups Ⅳ and ⅴ were significantly lower than those in group Ⅰ ( P<0 . 05 or P<0 . 01 ) . In conclusion, dietary manganese at appropriate supplemental level can promote growth performance, slaughter performance and tibia development of Wulong geese aged from 1 to 4 weeks, and the optimal supplemental lev-el of manganese is 105. 71 to 117. 74 mg/kg.