In situ ruminal degradability of forage cactus-based diets associated with pornunça silage

IF 0.4 4区 农林科学 Q4 AGRICULTURE, MULTIDISCIPLINARY Semina-ciencias Agrarias Pub Date : 2023-04-25 DOI:10.5433/1679-0359.2023v44n2p549
Maria Clementina Rodrigues Gomes, J. G. D. S. Silva Filho, F. Alves, Maria de Nazaré Paula da Silva, Clesio Morgado de Souza, Luara Coelho de Souza, T. V. Voltolini
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Abstract

The knowledge of ruminal degradation kinetics of forage cactus-based diets associated with Euphorbiaceae species of the genus Manihot assist in understanding nutrient quality and use, contributing to the indication of combinations of these ingredients in ruminant diets. This study aimed to evaluate the in situ ruminal degradability of diets with increasing association of forage cactus Elephant Ear (MEE) and pornunça (Manihot sp.) silage, as well as to analyze and evaluate the indigestible neutral detergent fiber (FDNi) content of forage cactus MEE and pornunça silage. The treatments consisted of diets with cactus pear associated with pornunça silage in the roughage portion in the proportions of 375, 250, 125 and 0 g kg-1 of DM. The feed was composed of 50% roughage and 50% concentrate of dry matter. Incubation times of 0, 6, 12, 24, 48, 96, and 144 hours were evaluated for the ingredients and 0, 2, 4, 6, 8, 12, 24, 48, 72, and 96 hours for the diets. Incubation to obtain the iNDF was given for 288 hours. The experimental design consisted of randomized blocks, with three replications. Regarding roughage ingredients, MEE showed higher average disappearance, potential degradability (PD), and effective degradability (ED) in relation to pornunça silage, as well as lower NDFi content. The proportion of 375 g kg-1 MEE and 125 g kg-1 pornunça silage provided higher fractions a, b, and c, increasing ED considering the three passage rates, with higher PD. In conclusion, the association between MEE and pornunça silage at a proportion of 375 g kg-1 MEE and125g kg-1 pornunça silage of the roughage portion increases the in situ degradability of dry matter, crude protein, and neutral detergent fiber.
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与黄麻苜蓿青贮相关的以仙人掌为原料的饲粮的原位瘤胃降解率
了解与大戟科马尼奥特属植物相关的以仙人掌为原料的饲料的瘤胃降解动力学有助于理解营养质量和利用,有助于在反刍动物饲料中指示这些成分的组合。本试验旨在评价饲粮中添加仙人掌象耳(MEE)和黄颡鱼(Manihot sp.)青贮对饲粮原位瘤胃降解率的影响,并分析和评价饲粮中不消化中性洗涤纤维(FDNi)含量。试验饲粮中分别添加375、250、125和0 g kg-1 DM比例的仙人掌梨和黄花苜蓿青贮,饲料中添加50%粗料和50%精干物质。对配料的孵育时间分别为0、6、12、24、48、96和144小时,对日粮的孵育时间分别为0、2、4、6、8、12、24、48、72和96小时。孵育288小时以获得iNDF。实验设计由随机分组组成,重复3次。在粗料成分方面,MEE的平均消失率、潜在降解率(PD)和有效降解率(ED)均高于黄颡鱼青贮,NDFi含量较低。375 g kg-1 MEE和125 g kg-1黄斑鱼青贮的比例提供了更高的a、b和c分数,考虑到三种传代率,ED增加,PD增加。综上所述,饲粮中添加375 g kg-1豆粕和125g kg-1豆粕时,可提高干物质、粗蛋白质和中性洗涤纤维的原位降解率。
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来源期刊
Semina-ciencias Agrarias
Semina-ciencias Agrarias 农林科学-农业综合
CiteScore
1.10
自引率
0.00%
发文量
148
审稿时长
3-6 weeks
期刊介绍: The Journal Semina Ciencias Agrarias (Semina: Cien. Agrar.) is a quarterly publication promoting Science and Technology and is associated with the State University of Londrina. It publishes original and review articles, as well as case reports and communications in the field of Agricultural Sciences, Animal Sciences, Food Sciences and Veterinary Medicine.
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