Souza Joice Teixeira, da Silva Oliveira Maria Érica, da Cunha Ana Elidarly, da Silva Vanessa Maria Freitas, de Araújo Ruan Arthur Nunes, Silva Mário Augusto Monteiro, Júnior Raimundo Audei Henrique, de Assunção Marcos Aurelio Victor, Lopes Ana Cecília Araújo, Monteiro Daniel Pigatto, Ribeiro Thiago Pereira, de Oliveira Moacir Franco, de Lima Matheus Ramalho
Animal Science Department, Campus Mossoro, Federal Rural University of the Semi-Arid Region (UFERSA), Mossoro 59625-900, RN, Brazil.
Animal Science Department, Campus Technological Innovation and Precision Animal Production Group (CNPq/UFERSA), Mossoro 59625-900, RN, Brazil.
Animals (Basel). 2025 May 13;15(10):1410. doi: 10.3390/ani15101410.
This study evaluated the effectiveness of a matrix of acid and alkaline proteases in diets for shrimp, considering zootechnical performance, meat yield, and intestinal histomorphometry. The experiment was carried out in 32 experimental units, with four treatments and eight replications each, using a density of 80 shrimp per square meter. The treatments consisted of positive control (PC) with standard diet, negative control (NC) with nutritional reduction, PC supplemented with 250 g/t of proteases (PCE), and NC supplemented with 250 g/t of proteases (NCE). In the fattening phase, significantly greater weight gain was observed in the NCE (14.23 g) and PCE (13.6 g) groups ( = 0.0381). Feed efficiency increased by 56.07% in the NCE group. Weekly growth was higher in the PCE (113.4%) and NCE (118.6%) groups ( = 0.028), with post-slaughter yields of 53.03% (NCE) and 52.21% (PCE). Water and humidity retention capacity remained stable in the NCE group during 210 days of frozen storage after slaughter. Intestinal histology indicated a greater absorption area in the groups with the best feed conversion and growth rates. It is concluded that protease supplementation improves nutrient absorption, growth, and meat yield in
本研究评估了酸性和碱性蛋白酶组合在虾饲料中的有效性，考量了畜牧学性能、出肉率和肠道组织形态学。实验在32个实验单元中进行，每种处理有4个重复，每个重复8次，每平方米放养80只虾。处理包括标准饲料的阳性对照（PC）、营养减少的阴性对照（NC）、添加250克/吨蛋白酶的PC（PCE）以及添加250克/吨蛋白酶的NC（NCE）。在育肥阶段，NCE组（14.23克）和PCE组（13.6克）的体重增加显著更高（P = 0.0381）。NCE组的饲料效率提高了56.07%。PCE组（113.4%）和NCE组（118.6%）的每周生长率更高（P = 0.028），屠宰后出肉率分别为53.03%（NCE）和52.21%（PCE）。屠宰后在210天的冷冻储存期间，NCE组的水分和湿度保持能力保持稳定。肠道组织学表明，饲料转化率和生长率最佳的组吸收面积更大。研究得出结论，补充蛋白酶可改善虾的营养吸收、生长和出肉率。
