de Oliveira Filho Carlos Alberto Alves, Azevêdo José Augusto Gomes, de Carvalho Gleidson Giordano Pinto, da Silva Camilla Flávia Portela Gomes, Cabral Ícaro dos Santos, Pereira Luiz Gustavo Ribeiro, dos Reis Larissa Gomes, de Almeida Flávio Moreira, Souza Lígia Lins
Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil.
Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Km 16 - Rodovia Jorge Amado, CEP: 45.662-900, Ilhéus, Bahia, Brazil.
Trop Anim Health Prod. 2016 Feb;48(2):289-95. doi: 10.1007/s11250-015-0948-7. Epub 2015 Nov 3.
This study aimed to evaluate the effect of the level of crude glycerin (CG) on in vitro fermentation kinetics (0, 20, 40, 60, and 80 g/kg DM of sugar cane silage), on in vitro neutral detergent fiber (NDF) degradation (0, 30, 60, and 90 g/kg DM of sugar cane silage), and intake and digestibility of nutrients and nitrogen balance (0, 20, 55, 82, and 108 g/kg DM of sugar cane silage) in lambs. The in vitro trials were conducted in a completely randomized design with three repetitions. The in vivo trial was conducted in a Latin square design with five repetitions (5 × 5). For variables in which the F test was considered significant, the statistical interpretation of the effect of CG substitution levels was carried out through regression analyses. Kinetic parameters were not affected by CG inclusion. On in vitro NDF degradation, a significant effect of CG levels was observed on the potentially degradable fraction of NDF, the insoluble potentially degradable fraction of NDF, and the undegradable NDF fraction. The intake and digestibility of nutrients and nitrogen balance were not affected by CG inclusion. The CG levels change in vitro NDF degradability parameters; however, there were no changes in animal intake, digestibility, and nitrogen balance with the inclusion levels used.
本研究旨在评估粗甘油（CG）水平（甘蔗青贮料干物质中分别为0、20、40、60和80 g/kg）对体外发酵动力学、体外中性洗涤纤维（NDF）降解（甘蔗青贮料干物质中分别为0、30、60和90 g/kg）以及羔羊营养物质摄入量、消化率和氮平衡（甘蔗青贮料干物质中分别为0、20、55、82和108 g/kg）的影响。体外试验采用完全随机设计，重复3次。体内试验采用拉丁方设计，重复5次（5×5）。对于F检验认为有显著意义的变量，通过回归分析对CG替代水平的效应进行统计学解释。动力学参数不受CG添加的影响。在体外NDF降解方面，观察到CG水平对NDF的潜在可降解部分、NDF的不可溶潜在可降解部分和NDF的不可降解部分有显著影响。营养物质的摄入量、消化率和氮平衡不受CG添加的影响。CG水平改变了体外NDF降解参数；然而，在所使用的添加水平下，动物的摄入量、消化率和氮平衡没有变化。
