The objectives were to determine the digestible energy and standardized ileal digestibility of amino acids (AA; Exp. 1) and to determine growth performance (Exp. 2) of two sources of dietary spray-dried plasma protein (SDPP) in nursery pigs. In Exp. 1, twelve nursery barrows (9.8 ± 0.9 kg) were assigned to a quadruplicated 3 × 2 Latin square design with three diets and two periods. Each period consisted of 5 d of adaptation, 2 d of fecal sampling, and 2 d of ileal collection. A basal diet was composed of corn, soybean meal, whey, and sucrose as the sole energy and AA sources. Experimental diets were prepared by replacing 15% of the energy and AA sources in the basal diet with SDPP 1 (manufactured in the United States; 78.2% crude protein and 4,862 kcal gross energy/kg as-is) or SDPP 2 (manufactured in Korea; 74.3% crude protein and 4,636 kcal gross energy/kg as-is). Spray-dried plasma protein 1 had greater digestible energy (P < 0.05), but less (P < 0.05) standardized ileal digestibility of Lys, Met, Trp, and Thr compared with SDPP 2. In Exp. 2, eighty-four nursery pigs (7.9 ± 0.7 kg) were allotted to three dietary treatments in a randomized complete block design with seven replicate pens and four pigs per pen. Three corn–soybean meal–whey–based diets contained fish meal (6% and 3.5% for days 0 to 14 and 14 to 28, respectively), SDPP 1 (4.5% and 2.7%), or SDPP 2 (5.0% and 3.0%) to maintain same energy and nutrient concentrations. During days 0 to 14 and overall period, pigs fed the diets containing SDPP gained more weight (P < 0.05) than those fed the fish meal diet with no difference between two SDPP sources. In conclusion, SDPP 1 contains greater digestible energy but less AA digestibility compared with SDPP 2. Growth-promoting effects of both SDPP sources in nursery diets have been clearly demonstrated in this work.

中文翻译：

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日粮喷雾干燥血浆蛋白对保育猪营养物质消化率和生长性能的影响


目的是确定保育猪的氨基酸消化能和标准化回肠消化率（AA；实验 1），并确定两种日粮喷雾干燥血浆蛋白（SDPP）来源的生长性能（实验 2）。在Exp。如图 1 所示，12 只保育车（9.8 ± 0.9 kg）被分配到四重 3 × 2 拉丁方设计，具有三种饮食和两个时期。每个时期包括 5 天的适应、2 天的粪便取样和 2 天的回肠收集。基础饮食由玉米、豆粕、乳清和蔗糖组成，作为唯一的能量和氨基酸来源。实验日粮的制备方法是将基础日粮中 15% 的能量和 AA 来源替换为 SDPP 1（美国制造；粗蛋白 78.2%，总能量 4,862 kcal/kg）或 SDPP 2（韩国制造） ; 74.3% 粗蛋白和 4,636 kcal 总能量/kg与 SDPP 2 相比，喷雾干燥血浆蛋白 1 具有较高的可消化能 (P < 0.05)，但 Lys、Met、Trp 和 Thr 的标准化回肠消化率较低 (P < 0.05)。如图 2 所示，84 头保育猪（7.9 ± 0.7 kg）被分配到随机完整区组设计中的 3 种饮食治疗中，其中有 7 个重复栏，每栏 4 头猪。三种以玉米-豆粕-乳清为主的日粮含有鱼粉（第 0 至 14 天和第 14 至 28 天分别为 6% 和 3.5%）、SDPP 1（4.5% 和 2.7%）或 SDPP 2（5.0% 和 3.0 %）以保持相同的能量和营养浓度。在第 0 至 14 天以及整个期间，饲喂含有 SDPP 日粮的猪比饲喂鱼粉日粮的猪体重增加更多 (P < 0.05)，两种 SDPP 来源之间没有差异。总之，与 SDPP 2 相比，SDPP 1 含有更高的可消化能量，但 AA 消化率更低。 这项工作已清楚地证明了保育日粮中两种 SDPP 来源的生长促进作用。