Joint analysis of economic viability indicators of feedlot steers fed diets with different concentrate levels

ABSTRACT The objective of this study was to evaluate the economic viability, through the joint analysis of financial indicators expressed by animal, of the Aberdeen Angus steers feedlot finished fed diets with different levels of concentrate (CL): 25, 40, 55 or 70% (on dry matter basis). Consecutive historical quotes of years 2003 to 2014 were considered. Univariate analysis was characterized by a completely randomized design with four treatments and four replications, proceeding regression analysis. Multivariate analysis consisted of grouping (cluster). The univariate analysis showed similarity to the financial indicators with averages to gross margin of R$ 173.21; net margin of R$ 163.73; income of R$ 110.61; net present value of R$ 93.31; benefit: cost ratio of 1.048; additional return on investment of 1.17% per month; internal rate of return of 2.04% per month and discounted payback of 1.36 months. By cluster analysis, 55% CL presented greater discrepancy in relation to other levels, while 40 and 70% were the nearest. The analysis of the financial indicators indicated feasibility of feedlot steers, regardless of the concentrate level.

摘要 本研究旨在通过以个体牲畜为单位的财务指标联合分析，评估饲喂不同精料（concentrate level, CL）水平日粮的安格斯牛（Aberdeen Angus）舍饲育肥的经济可行性：精料水平按干物质基础（dry matter basis）计分别为25%、40%、55%或70%。本研究采用2003年至2014年的连续历史报价数据。单变量分析采用完全随机设计，设置4个处理组与4次重复，并开展回归分析；多变量分析则采用聚类（cluster）分组法。单变量分析结果显示，各财务指标均值分别为：毛利润173.21雷亚尔（R$）、净利润163.73雷亚尔、经营收入110.61雷亚尔、净现值93.31雷亚尔、效益成本比1.048、月均追加投资收益率1.17%、月均内部收益率2.04%，以及折现回收期1.36个月。经聚类分析，55% CL组与其余精料水平组的差异最为显著，而40%与70% CL组的组间相似性最高。综合上述财务指标分析结果可知，无论精料水平如何，安格斯牛舍饲育肥均具备经济可行性。