氨基酸營養(yǎng)與腸道健康-wenkub
2023-06-10 12:12:14 本頁面
【正文】 Fish meal Whey powder Spraydried blood plasma Casein — Canola oil Limestone Biofos Vitamin and mineral premix Biolys — DLMet LThr LTrp LIle — LVal — Calculated nutrient position %CP % CP ME, MJ/kg CP, % Lys, % Met, % Ile, % Thr, % Trp, % Val, % Standardized ileal digestible AA, % Lys Met + Cys Thr Trp Ile Val Ca, % Total P, % 飼料營養(yǎng)成分含量 Item % CP % CP SEM Initial BW, kg Final BW, kg ADG, g d 1 to 7 201a 147b d 9 to 10 333 304 d 12 to 14 322 343 Overall 286 265 G:F, g/g d 1 to 7 d 9 to 10 d 12 to 14 Overall Fecal consistency score 24 h after challenge 30 h after challenge 48 h after challenge 72 h after challenge 5 d after challenge Overall 結果：生產性能 日糧蛋白質水平對回腸食糜中大腸桿菌 K88數(shù)量的影響 Taxonomic level, % %CP %CP SEM Fhylum Bacteroidetes Class unclassified Bacteroidetes 厚臂菌門 桿菌綱 梭菌綱 梭菌目 Family Lachnospiraceae Genus Roseburia Order unclassified Clostridia Class unclassified Firmicutes Phylum Lentisphaerae Class Lentisphaerae Phylum Proteobacteria Class Epsilonproteobacteria 0 Class Deltaproteobacteria Class Gammaproteobacteria Class Betaproteobacteria Class unclassified Proteobacteria Phylum unclassified Bacteria 日糧蛋白質水平對結腸菌群的影響 Item % CP % CP SEM Ammonia N, mg/L 1 d before challenge 3 d after challenge 7 d after challenge Total VFA, mmol/L 1 d before challenge 3 d after challenge 7 d after challenge 日糧蛋白質水平對結腸氨濃度和總揮發(fā)性脂肪酸的影響 Item % CP % CP SEM Villus height, μm 1 d before challenge 3 d after challenge 7 d after challenge Crypt depth, μm 1 d before challenge 3 d after challenge 7 d after challenge Villus height:crypt depth 1 d before challenge 3 d after challenge 7 d after challenge 日糧蛋白質水平對回腸絨毛發(fā)育的影響 結論 ?用大腸桿菌感染 17日齡斷奶仔豬 ?% CP添加合成氨基酸的日糧 可取得和 % CP日糧相似的生產性能 ?降低日糧蛋白質水平可減少結腸氨氣的產生和蛋白質的發(fā)酵 ?降低日糧蛋白質水平減少大腸和小腸中大腸桿菌的數(shù)量 ?降低日糧蛋白質水平增加絨毛高度和隱窩深度的比 ,增加結腸中丁酸的產生 Maximum quadratic = R2 = 日糧凈能含量與育肥豬最小平均日增重百分比的折線和二次趨勢圖 最小平均日增重百分比
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