The objective of this study was to compare the standardized ileal digestibility (SID) of amino acids (AA) in 3 poultry byproducts including hydrolyzed feather meal (HFM), flash dried poultry protein (FDPP), and poultry meal (PM) and also a meat and bone meal (MBM) between broiler chickens and pigs. Experimental diets consisted of four diets containing each test ingredient as a sole source of nitrogen and a nitrogen-free diet. In Exp. 1, 416 male broiler chickens with a mean initial body weight (BW) of 705 ± 100 g were allotted to 5 diets with 8 replicate cages per diet in a randomized complete block design with BW as a blocking factor at d 18 post hatching. After 5 d of feeding experimental diets, birds were euthanized by CO₂ asphyxiation, and ileal digesta samples were collected from distal two-thirds of the ileum. In Exp. 2, 10 barrows with a mean initial BW of 22.1 ± 1.59 kg were surgically fitted with T-cannulas at the distal ileum and allotted to a duplicate 5 × 4 incomplete Latin Square design with 5 diets and 4 periods. Each period lasted for 7 d including 5 d of adaptation and 2 d of ileal digesta collection. Data from Exp. 1 and 2 were pooled together and analyzed as a 2 × 4 factorial arrangement with the effects of species (broiler chickens or pigs) and 4 experimental diets (HFM, FDPP, PM, or MBM). There were interactions (P < 0.05) between experimental diets and species in the SID of His, Lys, Thr, Trp, Val, and all dispensable AA except Tyr. In broiler chickens, the SID of Lys in FDPP (73.3%) was greater (P < 0.05) than in HFM (55.7%) but was lower (P < 0.05) than in MBM (86.5%), which was not different from PM (78.7%). In pigs, however, the SID of Lys in FDPP and PM (70.0 and 70.1%, respectively) were greater (P < 0.05) than in HFM (39.0%) but were lower (P < 0.05) than in MBM (79.2%). Broiler chickens fed FDPP and PM had lower (P < 0.05) SID of His, Thr, and Trp than those fed MBM; however, there was no difference in the SID of His, Thr, or Trp among pigs fed FDPP, PM, or MBM. The SID of Val in MBM was greater (P < 0.05) than in the other test ingredients for broiler chickens, but there was no difference in the SID of Val among test ingredients for pigs. Pigs had greater (P < 0.05) SID of Ile and Met than broiler chickens. In conclusion, the pattern of differences in the SID of His, Lys, Thr, Trp, and Val, but not the other indispensable AA, among poultry byproducts and MBM were different between broiler chickens and pigs.

中文翻译：

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饲喂不同家禽副产品，肉和骨粉的肉鸡和猪的氨基酸消化率比较。

本研究的目的是比较三种禽肉副产品中氨基酸（AA）的标准化回肠消化率（SID），其中包括水解羽毛粉（HFM），速干家禽蛋白（FDPP）和家禽粉（PM），以及肉鸡和猪之间的肉骨粉（MBM）。实验饮食包括四种饮食，其中每种测试成分均作为唯一的氮源和无氮饮食。在实验中 1,416只平均初始体重（BW）的雄性肉鸡将705±100 g的）分配给5种日粮，每个日粮有8个重复的笼子，在孵化后的第18天以BW作为阻断因子进行随机完全阻断设计。喂食实验饲料5天后，将CO ₂安乐死从三分之二的回肠末端收集窒息和回肠消化液样品。在实验中 2，10头平均体重初始值为22.1±1.59千克的公猪在回肠末端通过T型插管进行手术安装，并分配给重复的5×4不完全拉丁方设计，采用5种饮食和4个周期。每个时期持续7天，包括5天的适应和2天的回肠消化物收集。来自Exp。将1和2合并在一起，并按2×4因子排列进行分析，并考虑物种（肉鸡或猪）和4种实验饮食（HFM，FDPP，PM或MBM）的影响。在日粮，His，Lys，Thr，Trp，Val和除Tyr外的所有可分配AA的SID中，实验饮食与物种之间存在相互作用（P <0.05）。在肉鸡中，FDPP中Lys的SID（73.3％）更大（P <0.05）高于HFM（55.7％），但低于MBM（86.5％）（P <0.05），与PM（78.7％）相同。然而，在猪中，FDPP和PM中Lys的SID（分别为70.0和70.1％）比HFM（39.0％）更大（P <0.05），但比MBM（79.2％）更低（P <0.05） 。饲喂FDPP和PM的肉鸡的His，Thr和Trp的SID低于饲喂MBM的（P <0.05）。然而，饲喂FDPP，PM或MBM的猪的His，Thr或Trp的SID没有差异。MBM中Val的SID比肉鸡的其他测试成分要高（P <0.05），但是在猪的测试成分中，Val的SID没有差异。猪更大（P<0.05）Ile和Met的SID比肉鸡高。总之，在肉鸡和猪之间，家禽副产品和MBM的His，Lys，Thr，Trp和Val的SID差异模式不同，但其他必不可少的AA差异则不同。