饲喂含粗甘油日粮的羔羊的营养和代谢参数

M. A. Syperreck, E. L. T. Peixoto, Matheus Gabriel Maidana Capelari, Débora Dias de Carvalho, A. R. Poveda-Parra, Fernando Luiz Massaro Junior, O. P. Prado-Calixto, I.Y. Mizubuti
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引用次数: 0

摘要

这项研究的目的是评估饲喂含粗甘油日粮的羔羊的采食量、表观消化率、氮平衡、瘤胃和血液参数。使用了四只平均体重为 25.0 千克的圣伊内斯品种阉割羔羊。所评估的日粮含有四个水平的粗甘油(0.0、50.0、100.0 和 150.0 g kg DM-1)。所有日粮的配方都是为了满足生长羔羊和育成羔羊的营养需要。原料为作为粗饲料的蕨类干草、磨碎的玉米粒、大豆粉、尿素、矿物盐和粗甘油。动物的全价日粮由 500 克/千克的粗饲料和 500 克/千克的精饲料(以 DM 计)组成。实验采用 4 x 4 拉丁正方形实验设计。实验结果表明,含粗甘油的日粮对动物的表观消化率、瘤胃 N-NH3、pH 值、纤毛虫原生动物和血尿素的影响最大(P0.05)。因此,含有粗甘油的日粮会影响干物质摄入量,最高值约为 40 g kg DM-1。同样,含有粗甘油的日粮也会影响氮的消耗和吸收,粗甘油的最高值分别为 36.9 和 28.4 g kg DM-1。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nutritional and metabolic parameters in lambs fed diets containing crude glycerine
The objective of this work was to evaluate the intake, apparent digestibility, nitrogen balance, ruminal and blood parameters in lambs fed diets containing of crude glycerin. Four castrated lambs of Santa Ines breed with an average weight of 25.0 kg were used. The evaluated diets contained four levels of crude glycerin (0.0, 50.0, 100.0 and 150.0 g kg DM-1). All diets were formulated to meet the nutrient requirements of growing and finishing lambs. The ingredients were: Brachiaria dyctioneura hay as roughage, ground corn grain, soybean meal, urea, mineral salt and crude glycerin. The complete diet provided to the animals was composed of 500 g kg-1 roughage and 500 g kg-1 concentrate on DM basis. A 4 x 4 Latin square experimental design was used. The highest intake (P<0.05) of dry matter (129.08 g kg BW-0.75), neutral detergent fiber (62.91 g kg BW-0.75), acid detergent fiber (41.10 g kg BW-0.75), total carbohydrate (99.92 g kg BW-0.75) and organic matter (116.89 g kg BW-0.75) was achieved with diets varying from 39.2 to 44.7 g kg DM-1 crude glycerin. Crude protein (17.84 g kg BW-0.75) and ether extract (2,70 g kg BW-0.75) intake was higher (P<0.05) with diets containing 39.0 and 77.1 g kg DM-1 of crude glycerin, respectively. Consumed and absorbed N displayed a quadratic effect, whereas retained N displayed a linear decreasing effect in function of crude glycerin levels. Ruminal concentrations of acetate, propionate, and butyrate, and blood glucose was influenced (P<0.05) by the postprandial hour vs. experimental diet interaction. Glycerin levels in the diet did not influence (P>0.05) the apparent digestibility and ruminal N-NH3, pH, ciliate protozoa and blood urea. Therefore, diets containing crude glycerin influenced dry matter intake, with the highest value being around 40 g kg DM-1. Likewise, diets containing crude glycerin influenced the N consumed and absorbed with maximum crude glycerin points of 36.9 and 28.4 g kg DM-1.
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