Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA.
Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; College of Veterinary Medicine and Zootechnia, University of Tolima, Ibagué, Colombia.
Poult Sci. 2024 Mar;103(3):103408. doi: 10.1016/j.psj.2023.103408. Epub 2023 Dec 27.
High oleic (HO) soybeans may serve as a value-added feed ingredient; providing amino acids and estimating their dietary energy value for broilers is essential. In this study, we determined the apparent metabolizable energy (AME), AME corrected for zero nitrogen retention (AMEn), digestibility, and nitrogen (N) retention of HO full-fat (HO-FF) soybean as compared to solvent-extracted soybean meal (SE-SBM), normal oleic full-fat (NO-FF) and extruded expeller (NO-EE) soybean. A total of 240 Ross-708 male broilers were selected, with 8 replicates per treatment and 6 chicks per cage. The AME and AMEn were estimated using the difference method with a 30% inclusion of test ingredients using a corn-soy reference diet with partial and total excreta collection. The index method with partial excreta collection used titanium dioxide as an inert marker. The same starter diet was provided for all birds for 14 d, followed by the reference and assay diets for the next 6 adaptation days. Total excreta were collected twice a day for 3 d. The AME and AMEn values determined for the HO-FF and NO-FF were higher (P < 0.001) than the NO-EE and SE-SBM. The AME of SE-SBM and NO-EE were similar with both methods, but the AMEn of SE-SBM was lower than the NO-EE only with the partial collection method. The agreement between AME and AMEn values determined by partial and total excreta collection analysis was 98%. Data from the total excreta collection method yielded higher AME and AMEn values (P < 0.001) than those from the partial collection method. In summary, HO-FF and NO-FF soybean meals had similar AME and AMEn values. The HO-FF soybean had 39 and 24% higher AME and AMEn than SE-SBM. Hence, high oleic full-fat soybean meal could serve as a valuable alternative feed ingredient to conventional SE-SBM meals in broiler diets, providing additional energy while providing amino acids and more oleic acid to enrich poultry meat products.
高油（HO）大豆可能作为一种有附加值的饲料成分；为肉仔鸡提供氨基酸并估算其日粮能量值非常重要。本研究旨在比较全脂高油（HO-FF）大豆、溶剂提取豆粕（SE-SBM）、普通油（NO）全脂大豆和膨化大豆（NO-EE）的表观代谢能（AME）、氮零平衡校正的 AME（AMEn）、消化率和氮（N）保留率。试验选用 240 只罗斯 708 雄性肉仔鸡，每个处理 8 个重复，每个重复 6 只鸡。采用差值法，以 30%的试验饲料替代玉米-豆粕基础饲粮，通过收集部分和全部粪便来估计 AME 和 AMEn。采用部分粪便收集的指数法，以二氧化钛作为惰性标记。所有鸡只在 14 d 龄内均使用同一起始饲粮，随后进行 6 d 的基础饲粮和测定饲粮适应期。每天收集粪便 2 次，共 3 d。HO-FF 和 NO-FF 的 AME 和 AMEn 值均显著高于（P＜0.001）NO-EE 和 SE-SBM。SE-SBM 和 NO-EE 的 AME 用两种方法测定均相似，但仅用部分收集法时，SE-SBM 的 AMEn 显著低于 NO-EE。用部分和全部粪便收集分析得到的 AME 和 AMEn 值之间的一致性为 98%。用全部粪便收集法得到的 AME 和 AMEn 值显著高于（P＜0.001）用部分粪便收集法。综上所述，HO-FF 和 NO-FF 大豆粕的 AME 和 AMEn 值相似。HO-FF 大豆的 AME 和 AMEn 比 SE-SBM 分别高 39%和 24%。因此，高油全脂大豆可以作为肉鸡饲粮中传统 SE-SBM 饲粮的有价值的替代品，在提供额外能量的同时，还可以提供氨基酸和更多的油酸，以丰富禽肉产品。
