Merlim Fernada Almeida, Silva Sobrinho Américo Garcia, Borghi Thiago Henrique, Cirne Luís Gabriel Alves, Valença Roberta Lima, Almeida Fabiana Alves, Endo Viviane, Viegas Carlos Renato, Zeola Nivea Maria Brancacci Lopes
Department of Animal Science, São Paulo State University, Jaboticabal, São Paulo, 14884-900, Brazil.
Institute of Biodiversity and Forestry, Federal University of Western Pará, Santarém, Pará, 68035-110, Brazil.
Arch Anim Breed. 2021 Sep 17;64(2):387-393. doi: 10.5194/aab-64-387-2021. eCollection 2021.
The objective of this study was to evaluate the intake, digestibility, nitrogen balance, and performance of feedlot lambs fed diets containing crude glycerin. A total of 30 Ile de France lambs were confined to individual pens at an average age of 45 : 15.1 initial body weight and 32.2 final body weight. The animals were distributed in a completely randomized design and fed three diets containing fresh sugarcane as forage (50 %) and concentrate (50 %), with or without the inclusion of 100 and 200 vegetable crude glycerin per kilogram dry matter (DM) replacing corn. Dietary glycerin inclusion reduced the intake of ether extract ( ) and total carbohydrates ( ) as well as the apparent digestibility of ether extract ( ), but it had no effect on the intake and digestibility of the other nutrients nor on lamb performance. The apparent nitrogen balance of lambs on the three diets was positive. Although it does not affect the intake and digestibility of most nutrients, the inclusion of 100 and 200 of crude glycerin in the diet tends to worsen lamb performance, indicating that the ideal level of inclusion should be below 100 of crude glycerin.
本研究的目的是评估饲喂含粗甘油日粮的育肥羔羊的采食量、消化率、氮平衡和生产性能。总共30只法兰西岛羔羊被单独圈养在栏舍中，平均年龄45日龄，初始体重15.1千克，最终体重32.2千克。这些动物采用完全随机设计，饲喂三种日粮，日粮以新鲜甘蔗为粗饲料（50%）和精饲料（50%），分别添加或不添加每千克干物质（DM）100克和200克的植物粗甘油以替代玉米。日粮中添加甘油降低了乙醚提取物（EE）和总碳水化合物（TC）的采食量以及乙醚提取物的表观消化率，但对其他营养物质的采食量和消化率以及羔羊生产性能没有影响。三种日粮条件下羔羊的表观氮平衡均为正值。虽然日粮中添加100克和200克粗甘油不影响大多数营养物质的采食量和消化率，但往往会使羔羊生产性能变差，这表明粗甘油的理想添加水平应低于100克。
