【摘要】：本試驗(yàn)旨在研究α-酮戊二酸(AKG)和大蒜素對(duì)生長(zhǎng)豬生長(zhǎng)性能、養(yǎng)分表觀消化率、血清生化指標(biāo)以及腸道形態(tài)結(jié)構(gòu)的影響。選用40頭初始平均體重為(30.64±1.35)kg的健康三元(杜×長(zhǎng)×大)雜交生長(zhǎng)豬,按體重相近、性別比例相同原則隨機(jī)分為5組,每組8個(gè)重復(fù),每個(gè)重復(fù)1頭豬。5組試驗(yàn)豬分別飼喂無抗基礎(chǔ)飼糧(對(duì)照組)、無抗基礎(chǔ)飼糧+25 mg/kg抗生素(Ⅰ組)、無抗基礎(chǔ)飼糧+1%AKG(Ⅱ組)、無抗基礎(chǔ)飼糧+0.5%大蒜素(Ⅲ組)、無抗基礎(chǔ)飼糧+1%AKG+0.5%大蒜素(Ⅳ組)。預(yù)試期7d,正試期21d。結(jié)果表明:1)與對(duì)照組相比,Ⅰ組和Ⅳ組生長(zhǎng)豬的平均日增重分別提高了10.80%和9.91%,但差異不顯著(P0.05)。2)與對(duì)照組相比,Ⅱ組鈣的表觀消化率顯著提高(P0.05),Ⅳ組粗蛋白質(zhì)、鈣和磷的表觀消化率顯著提高(P0.05),且Ⅳ組較Ⅰ組顯著提高了磷的表觀消化率(P0.05)。3)與對(duì)照組相比,Ⅱ組血清免疫球蛋白G(IgG)含量顯著提高(P0.05);Ⅲ組血清甘油三酯(TG)含量顯著降低(P0.05);Ⅳ組血清總膽固醇(TCHO)和TG含量顯著降低(P0.05),血清堿性磷酸酶(AKP)、谷草轉(zhuǎn)氨酶(AST)和谷丙轉(zhuǎn)氨酶(ALT)活性及血清免疫球蛋白A(IgA)、IgG含量顯著提高(P0.05)。與Ⅰ組相比,Ⅳ組血清TCHO和TG含量有降低趨勢(shì)(P0.05),血清AST和ALT活性顯著提高(P0.05)。4)與對(duì)照組相比,Ⅳ組回腸絨毛高度及空腸和回腸的絨毛高度/隱窩深度值顯著提高(P0.05)。5)與對(duì)照組相比,Ⅳ組回腸中杯狀細(xì)胞和淋巴細(xì)胞數(shù)目顯著增加(P0.05)。綜上,無抗飼糧中聯(lián)合添加1%AKG和0.5%大蒜素可通過改善腸道形態(tài)結(jié)構(gòu),提高對(duì)粗蛋白質(zhì)、鈣和磷等養(yǎng)分的消化吸收能力,促進(jìn)腸道健康,進(jìn)而改善生長(zhǎng)豬的生長(zhǎng)性能。
[Abstract]:The effects of 偽 -ketoglutarate (AKG) and allicin on growth performance, apparent nutrient digestibility, serum biochemical indexes and intestinal morphology of growing pigs were studied. Forty crossbred pigs with an initial average body weight of (30.64 鹵1.35) kg were randomly divided into 5 groups, with 8 replicates in each group, according to the principle of similar body weight and the same sex ratio. The test pigs in 5 groups of repeated pigs were fed with basal diet (control group), 25 mg/kg antibiotics (group 鈪，

本文編號(hào)：2173526