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Bioeconomic evaluation of feedings strategies in the yearling beef cattle system in Mozambique
Livestock Science ( IF 1.8 ) Pub Date : 2021-03-11 , DOI: 10.1016/j.livsci.2021.104466
Télis Adolfo Cumbe , Amir Gil Sessim , Fredy Andrey López-González , Daniele Zago , Antónia Mendes Paizano Alforma , Júlio Otávio Jardim Barcellos

The application of feeding strategies (FS) to meet nutrient requirements of beef cattle grazing on native pastures during the dry season, are required to improve the productivity of production systems in tropical regions. The objective of this study was to evaluate the bioeconomic effects of different FSs applied to yearling bulls in Mozambique, using modeling and simulations as tools to support decision making. A simple deterministic simulation model was developed, assuming initial body weight (120 kg), average daily gain (ADG), feedstuffs, and production costs as inputs. FSs were simulated for a total of 120 days within four ADG systems: 0.000 kg (S000), 0.200 kg (S200), 0.400 kg (S400), and 0.600 kg/d (S600), and three diets were simulated for the positive and maintenance ADG systems, totaling 12 FS. The effects of 12 FS combinations were analyzed and a sensitivity analysis was performed. The effect of the change in the inputs of the model (feedstuffs purchase and calf purchase price) showed the sensitivity of the model to economic parameters (Gross Margin and Net Profit). The negative ADG (-0.200 kg) system (S-200) had the highest labor cost. Corn bran, considering its availability and low cost in the studied region, is a promising feedstuff for concentrates. Effective operational cost (EOC) was higher than 99% in all FSs. S-200, S000, and FS5 within the S200 system resulted in negative net profit (NP) values. Net profit proportionally increased as ADG increased. FS12 (Hyparrhenia rufa, corn bran, and Sesbania sesban) of S600 promoted the highest ratio (NP/total operation cost) (0.48), and consequently, the highest profitability (32.37%). In general, the simulation model shows that, in native and communal pasture beef production systems in regions of Africa with similar production conditions, the productivity of yearling beef cattle during the dry season may be improved by applying feeding strategies.



中文翻译:

莫桑比克一岁肉牛系统饲喂策略的生物经济评价

为了提高热带地区生产系统的生产力,需要采用饲喂策略(FS)来满足干旱季节在天然牧场上放牧的肉牛的营养需求。这项研究的目的是使用建模和模拟作为支持决策的工具,评估应用于莫桑比克一岁公牛的不同FS的生物经济效应。建立了一个简单的确定性仿真模型,假定初始体重(120公斤),平均日增重(ADG),饲料和生产成本作为输入。在四个ADG系统中对FS进行了总共120天的模拟:0.000 kg(S000),0.200 kg(S200),0.400 kg(S400)和0.600 kg / d(S600),并模拟了三种日粮的阳性和日粮。维护ADG系统,总计12 FS。分析了12种FS组合的效果,并进行了敏感性分析。模型输入(饲料购买和小牛购买价格)变化的影响表明模型对经济参数(毛利润和净利润)的敏感性。负数ADG(-0.200千克)系统(S-200)的人工成本最高。考虑到其在研究区域中的可获得性和低成本,玉米麸是用于精矿的有前途的饲料。在所有财务报表中,有效运营成本(EOC)均高于99%。S200系统中的S-200,S000和FS5导致负净利润(NP)值。净利润随着ADG的增加按比例增加。FS12(模型输入(饲料购买和小牛购买价格)变化的影响表明模型对经济参数(毛利润和净利润)的敏感性。负数ADG(-0.200千克)系统(S-200)的人工成本最高。考虑到其在研究区域中的可获得性和低成本,玉米麸是用于精矿的有前途的饲料。在所有财务报表中,有效运营成本(EOC)均高于99%。S200系统中的S-200,S000和FS5导致负净利润(NP)值。净利润随着ADG的增加按比例增加。FS12(模型输入(饲料购买和小牛购买价格)变化的影响表明模型对经济参数(毛利润和净利润)的敏感性。负数ADG(-0.200千克)系统(S-200)的人工成本最高。考虑到其在研究区域中的可获得性和低成本,玉米麸是用于精矿的有前途的饲料。在所有财务报表中,有效运营成本(EOC)均高于99%。S200系统中的S-200,S000和FS5导致负净利润(NP)值。净利润随着ADG的增加按比例增加。FS12(在所有财务报表中,有效运营成本(EOC)均高于99%。S200系统中的S-200,S000和FS5导致负净利润(NP)值。净利润随着ADG的增加按比例增加。FS12(在所有财务报表中,有效运营成本(EOC)均高于99%。S200系统中的S-200,S000和FS5导致负净利润(NP)值。净利润随着ADG的增加按比例增加。FS12(红苞茅,玉米糠,和田菁sesban S600的)促进了最高比率(NP /总运行成本)(0.48),因此,最高盈利(32.37%)。总体而言,模拟模型表明,在生产条件相似的非洲地区的本地和公共牧场牛肉生产系统中,可以通过采用饲养策略来提高干旱季节一岁肉牛的生产力。

更新日期:2021-03-22
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