Unidad de Producción y Sanidad Animal. Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Zaragoza, Spain.
Instituto Agroalimentario de Aragón - IA2 (CITA-Universidad de Zaragoza), Zaragoza, Spain.
J Sci Food Agric. 2021 May;101(7):3041-3048. doi: 10.1002/jsfa.10938. Epub 2020 Nov 29.
The objective of this study was to evaluate the effect of the proportion of pea (0%, 10%, 20%, and 30%), as a partial replacement for soybean meal (SBM) in the fattening concentrate, on ruminal fermentation in lambs. Gas and methane (CH ) production, in vitro dry matter degradability (IVDMD), ammonia (NH -N), and volatile fatty acid (VFA) production after 24 h of incubation were evaluated. The concentrates were also incubated in the rumen of the wethers for 2, 4, 6, 8, 12, and 24 h to evaluate the effects of pea inclusion on in situ dry matter degradability (DMD), organic matter degradability (OMD), nitrogen degradability (ND), NH -N, and VFA production.
In the in vitro assay, the inclusion of pea only affected gas production (mL day degraded dry matter), CH production (mL day degraded dry matter), and IVDMD (P < 0.05), and tended to affect NH -N content (P < 0.10) without affecting VFA production. In the in situ assay, the inclusion of pea increased DMD, OMD, and ND linearly (P < 0.001), whereas pea inclusion decreased NH -N content linearly (P < 0.05). Neither total VFA production nor the proportion of acetic acid were affected by pea inclusion (P > 0.05), but the propionic proportion increased with the proportion of pea included.
The best level of pea inclusion in the concentrate could not be established based on the results of this study. However, the results showed that the inclusion of pea provides a good alternative protein source. © 2020 Society of Chemical Industry.
本研究旨在评估豌豆（0%、10%、20%和 30%）作为替代部分豆粕（SBM）在育肥浓缩物中对羔羊瘤胃发酵的影响。评估了 24 小时孵育后气体和甲烷（CH ）产生量、体外干物质降解率（IVDMD）、氨（NH -N）和挥发性脂肪酸（VFA）的产生量。还将浓缩物在公绵羊瘤胃中孵育 2、4、6、8、12 和 24 小时，以评估豌豆的包含物对原位干物质降解率（DMD）、有机质降解率（OMD）、氮降解率（ND）、NH -N 和 VFA 产生的影响。
在体外试验中，豌豆的包含物仅影响气体产生量（mL 天降解干物质）、CH 产生量（mL 天降解干物质）和 IVDMD（P < 0.05），并倾向于影响 NH -N 含量（P < 0.10）而不影响 VFA 产生。在原位试验中，豌豆的包含物线性增加 DMD、OMD 和 ND（P < 0.001），而豌豆的包含物线性降低 NH -N 含量（P < 0.05）。豌豆的包含物既不影响总 VFA 产生量，也不影响乙酸的比例（P > 0.05），但丙酸比例随豌豆包含物比例的增加而增加。
根据本研究的结果，无法确定浓缩物中豌豆的最佳包含水平。然而，结果表明，豌豆的包含物提供了一种良好的替代蛋白质来源。 © 2020 化学工业协会。
