Canul-Ku Luis Alberto, Sanginés-García José Roberto, Urquizo Edgar Aguilar, Canul-Solís Jorge Rodolfo, Valdivieso-Pérez Ingrid Abril, Vargas-Bello-Pérez Einar, Molina-Botero Isabel, Arango Jacobo, Piñeiro-Vázquez Ángel Trinidad
Tecnológico Nacional de México, Instituto Tecnológico de Conkal, Conkal 97345, Mexico.
Tecnológico Nacional de México, Instituto Tecnológico de Conkal, Tizimín 97000, Mexico.
Animals (Basel). 2023 Jun 2;13(11):1858. doi: 10.3390/ani13111858.
This study determined the effect of pelagic on in vitro dry matter and organic matter degradation, total gas production (TGP), and protozoa population. The treatments were different levels of inclusion on a basal substrate (Stargrass hay; ) as follows: T0 (control treatment based on Stargrass hay), T10 (90% Stargrass hay + 10% ), T20 (80% Stargrass hay + 20% ), and T30 (70% Stargrass hay + 30% ). Ruminal fermentation kinetics and protozoa population were determined during 72 h of in vitro incubations. Compared to control, dry matter degradability at 48 and 72 h and organic matter degradability at 24 and 48 h were higher in treatments. TGP was lower with T20 at 48 h. The total population of protozoa and the concentration of spp. were lower at T20 at 48 h and T30 at 72 h. Cl, S, Ca, K, and Zn (103, 5.97, 88.73, 285.70 g/kg, and 15,900 mg/kg) were high in , reaching twice or even nine times higher than the contents in Stargrass (11.37, 1.60, 43.53, 87.73 g/kg, and 866.67 mg/kg). Overall, up to 30% pelagic could be included in hay-based substrates from tropical grasses without negative effects on in vitro dry matter and organic matter degradability.
本研究确定了浮游生物对体外干物质和有机物质降解、总产气量（TGP）以及原生动物数量的影响。处理方式为在基础底物（星草干草；）上添加不同水平的[未明确的物质，原文用“ ”表示]，具体如下：T0（基于星草干草的对照处理）、T10（90%星草干草 + 10% [未明确的物质，原文用“ ”表示]）、T20（80%星草干草 + 20% [未明确的物质，原文用“ ”表示]）和T30（70%星草干草 + 30% [未明确的物质，原文用“ ”表示]）。在体外培养72小时期间测定瘤胃发酵动力学和原生动物数量。与对照相比，[未明确的物质，原文用“ ”表示]处理组在48小时和72小时的干物质降解率以及在24小时和48小时的有机物质降解率更高。T20组在48小时时TGP较低。原生动物总数和[未明确的物种，原文用“ spp.”表示]的浓度在T20组48小时时以及T30组72小时时较低。[未明确的物质，原文用“ ”表示]中Cl、S、Ca、K和Zn（103、5.97、88.73、285.70 g/kg和15,900 mg/kg）含量较高，达到星草（11.37、1.60、43.53、87.73 g/kg和866.67 mg/kg）中含量的两倍甚至九倍。总体而言，热带草类干草基底物中可添加高达30%的浮游生物[未明确的物质，原文用“ ”表示]，且对体外干物质和有机物质降解率无负面影响。
