【摘要】：本試驗(yàn)旨在研究枯草芽孢桿菌與錳協(xié)同對(duì)5~11周齡五龍鵝血清生化指標(biāo)、抗氧化能力及脛骨發(fā)育的作用,以探索在肉鵝飼糧中添加枯草芽孢桿菌對(duì)錳需要量的影響。試驗(yàn)選用5周齡五龍鵝360只,隨機(jī)分為6組,每組6個(gè)重復(fù),每個(gè)重復(fù)10只(公母各占1/2)。Ⅰ組飼糧錳添加水平為105 mg/kg,未添加枯草芽孢桿菌;Ⅱ~Ⅵ組飼糧枯草芽孢桿菌添加水平均為250 g/t,錳添加水平分別為0、35、70、105、170 mg/kg。試驗(yàn)期7周。結(jié)果表明:1)Ⅱ~Ⅵ組血清堿性磷酸酶(AKP)活性及甘油三酯(TG)、膽固醇(CHOL)含量均隨飼糧錳添加水平的增加呈現(xiàn)先升高后降低趨勢(shì),各組間差異不顯著(P0.05),均以Ⅳ組最高。2)Ⅱ~Ⅵ組血清總抗氧化能力(T-AOC)和谷胱甘肽過氧化物酶(GSH-Px)活性均隨飼糧錳添加水平的增加呈現(xiàn)先升高后降低趨勢(shì),Ⅳ組顯著高于Ⅰ組(P0.05),極顯著高于Ⅱ組(P0.01);Ⅱ~Ⅵ組血清丙二醛(MDA)含量隨飼糧錳添加水平的增加呈現(xiàn)先降低后升高趨勢(shì),Ⅳ組極顯著低于Ⅱ組(P0.01)。3)Ⅱ~Ⅵ組骨密度、骨強(qiáng)度、脛骨重和脛骨灰分含量均隨飼糧錳添加水平的增加呈現(xiàn)先升高后降低趨勢(shì),Ⅳ組骨密度、骨強(qiáng)度、脛骨重和脛骨鈣含量均顯著或極顯著高于Ⅰ組(P0.05或P0.01);Ⅱ、Ⅲ、Ⅳ、Ⅴ組脛骨錳含量均顯著或極顯著低于Ⅰ組(P0.05或P0.01)。由此可見,飼糧中添加枯草芽孢桿菌能夠提高錳生物學(xué)效應(yīng),進(jìn)一步提高機(jī)體營(yíng)養(yǎng)同化作用,增強(qiáng)機(jī)體抗氧化能力,促進(jìn)脛骨發(fā)育,降低脛骨錳含量;建議在5~11周齡五龍鵝飼糧中添加250 g/t枯草芽孢桿菌條件下,錳適宜添加水平為70 mg/kg。
[Abstract]:The purpose of this experiment was to study the effects of Bacillus subtilis and manganese on serum biochemical indexes, antioxidant capacity and tibia development of 5- and 11-week-old Wulong geese, and to explore the effect of adding Bacillus subtilis to the diet of meat geese on manganese requirement. 360 five-week-old Wulong geese were randomly divided into 6 groups with 10 replicates in each group (male and female: 1 / 2). The dietary manganese supplementation level of group 鈪，

本文編號(hào)：2381121