Ferreira Ana Paula Damasceno, Silva Jamile Andréa Rodrigues da, Mourato Miguel Pedro, Prates José António Mestre, Rodrigues Thomaz Cyro Guimarães de Carvalho, Silva André Guimarães Maciel E, Cruz Andrea Viana da, Lobato Adriny Dos Santos Miranda, Silva Welligton Conceição da, Silva Elton Alex Corrêa da, Cunha Antônio Marcos Quadros, Lourenço-Costa Vanessa Vieira, Silva Éder Bruno Rebelo da, Belo Tatiane Silva, Lourenço-Júnior José de Brito
Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil.
Institute of Animal Health and Production, Federal Rural University of the Amazônia (UFRA), Belem 66077-830, Brazil.
Animals (Basel). 2025 Jul 25;15(15):2186. doi: 10.3390/ani15152186.
The scientific literature currently lacks studies that evaluate the nutritional composition of the tissues of cattle raised in different systems, so that the nutritional effects can be known and used to enhance consumption and use in the diet. The aim was therefore to assess whether the mineral content of muscle tissue () in cattle finished during the rainy season in the Eastern Amazon is influenced by different farming systems. The treatments consisted of four systems (three pasture production systems and one feedlot system). 1. native wetland pasture in Santa Cruz do Arari (Mesoregion of Marajó); 2. native wetland pasture in Monte Alegre (Mesoregion of Baixo Amazonas); 3. cultivated dryland pasture in São Miguel do Guamá (Mesoregion of Nordeste Paraense); and 4. Confinement in Santa Izabel do Pará (Metropolitan Region of Belém). The analyses were carried out on samples of the muscle tissue of 48 male, castrated, crossbred Nelore cattle, twelve per breeding system, from commercial farms, destined for meat production, finished during the rainiest period of the year (between January and June). In systems 1 and 2, the animals were slaughtered in licensed slaughterhouses; the animals in systems 3 and 4 were slaughtered in commercial slaughterhouses. Food sampling and chemical analysis, soil sample collection and analysis, muscle tissue collection, sample preparation and digestion, and inductively coupled plasma optical emission spectrometry were evaluated. The experimental design was completely randomized in a linear model with four rearing systems and one period (rainy). The data was compared using the Statistical Analysis Systems (SAS) program. All analyses were carried out considering a significance level of 0.05. Samples of the diets offered (pasture and concentrate) were also collected. The Amazon systems influenced the macro- and micromineral content in the muscles of cattle ( < 0.05). The interaction between pasture systems vs. confinement showed differences in the minerals calcium (Ca), magnesium (Mg), phosphorus (P), copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn) ( < 0.05). However, there was no difference in the values of sodium (Na), potassium (K), and sulfur (S) between the rearing systems ( > 0.05). By contrast, the cultivated pasture system vs. extensive pasture showed differences in all the elements evaluated ( < 0.05). The rearing systems of the Eastern Amazon influenced the mineral content of beef, which continues to be an excellent source of macro- and microminerals and can compose the human diet.
目前科学文献中缺乏评估不同养殖系统下饲养的牛组织营养成分的研究，以便了解其营养效应并用于增加饮食中的消费和使用。因此，本研究旨在评估亚马逊东部雨季育肥牛的肌肉组织（）矿物质含量是否受不同养殖系统的影响。处理包括四种系统（三种牧场生产系统和一种饲养场系统）。1. 阿拉里圣克鲁斯的原生湿地牧场（马拉若中地区）；2. 蒙特阿莱格里的原生湿地牧场（下亚马逊中地区）；3. 圣米格尔杜瓜马的人工旱地牧场（帕拉东北中地区）；4. 帕拉州圣伊莎贝尔的圈养（贝伦大都会区）。分析针对48头去势杂交内洛尔公牛的肌肉组织样本进行，每个养殖系统12头，来自商业农场，用于肉类生产，在一年中降雨最多的时期（1月至6月）育肥。在系统1和2中，动物在有许可证的屠宰场屠宰；系统3和4中的动物在商业屠宰场屠宰。对食物采样与化学分析、土壤样本采集与分析、肌肉组织采集、样本制备与消化以及电感耦合等离子体发射光谱法进行了评估。实验设计采用完全随机线性模型，有四种饲养系统和一个时期（雨季）。使用统计分析系统（SAS）程序对数据进行比较。所有分析均在显著性水平为0.05的情况下进行。还采集了所提供日粮（牧草和精饲料）的样本。亚马逊地区的养殖系统影响了牛肌肉中的常量和微量矿物质含量（<0.05）。牧场系统与圈养之间的相互作用在钙（Ca）、镁（Mg）、磷（P）、铜（Cu）、锌（Zn）、铁（Fe）和锰（Mn）矿物质方面存在差异（<0.05）。然而，饲养系统之间钠（Na）、钾（K）和硫（S）的值没有差异（>0.05）。相比之下，人工牧场系统与粗放牧场在所有评估元素上均存在差异（<0.05）。亚马逊东部的饲养系统影响了牛肉的矿物质含量，牛肉仍然是常量和微量矿物质的优质来源，可构成人类饮食。
