摘要
The aim of the study was to investigate the activity of slow-release non-protein nitrogen compound with the enzymatic activity (SENPN) and to compare it with the activity of slow-releasing non-protein nitrogen compound (SNPN) in beef cattle feeding. The following indicators were monitored: body weight (BW), average weight gain (AWG), feed conversion ratio (FCR), trunk weight at slaughter (TWS) and dressing percentage (DP). Beef cattle were divided into two groups of uniform body weights; control group (CG) and experimental group (EG). The feed ration of the CG contained SNPN, while the feed ration of the EG contained SENPN. During the trial, three weights were performed to measure BW. The trial consisted of two parts: (i) the first part of the trial refers to the period between the first and second weighing, in which the feed ration of the EG contained 4.81% less starch per kg of dry matter (DM) compared to the feed ration of the CG, and (ii) the second part of the trial was conducted in the period between the second and third weighing, in which the feed ration contained equal starch levels. After the third weighing, the beef cattle were transported to the slaughterhouse, where they were sacrificed, and subsequently the values of TWS and DP were measured. There were no statistically significant differences found for each of the measured parameters. In conclusion, the usage of SENPN positively affects the utilisation of nutrients in the mixture, e.g. feed ration.
摘要译文
该研究的目的是研究慢释放的非蛋白氮化合物与酶活性（SeNPN）的活性，并将其与牛牛饲喂中的缓慢释放的非蛋白质氮化合物（SnPn）的活性进行比较。监测以下指标：体重（BW），平均重量增益（AWG），饲料转换比（FCR），屠宰时的躯干重量（TWS）和敷料百分比（DP）。肉牛分为两组均匀的体重;对照组（CG）和实验组（例如）。 CG的饲料ration含有SNPN，而EG的饲料竞争率含有EG。在试验期间，进行三重重量以测量BW。该试验由两部分组成：（i）试验的第一部分是指第一和第二称重之间的时期，其中，例如，相比，例如每千克干物质（DM）的淀粉含量为4.81％较少的淀粉之间的期间。 CG的饲料配给和（ii）试验的第二部分在第二和第三称重之间进行，其中饲料配给含有相等的淀粉水平。在第三种称重之后，将牛肉牛运输到屠宰场，处于处死它们，随后测量TWS和DP的值。每个测量参数都没有发现统计学上显着的差异。总之，森邦的用法积极地影响混合物中营养物的利用，例如，饲料配给。
Steiner; Zvonimir[1];Klarić Ivana[1];Novoselec; Josip[1];Klir; Željka[1];Antunović Boris[1];Babić Ivan[1];Ronta; Mario[1]. Research on influence of different non-protein nitrogen (NPN) compounds in beef cattle feeding[J]. Journal of Central European Agriculture, 2019,20(1): 31-35