仙人掌在半干旱地区的小反刍动物的饮食中大量使用。然而,由于纤维和粗蛋白含量低,水和矿物质含量高,不建议独家使用,导致代谢紊乱,低干物质摄入量,和减肥。使用与蛋白质和纤维来源相关的混合仙人掌青贮饲料试图克服干物质的缺陷,纤维和粗蛋白,旨在改善将提供给反刍动物的饮食的营养质量。因此,在仙人掌青贮中使用gliricidia干草可能是改善青贮材料营养和发酵特性的重要替代方法。因此,我们的目的是评估发酵动力学,营养特征,仙人掌混合青贮与不同水平干草的有氧稳定性。这是具有五次处理和五次重复的完全随机实验设计。处理包括混合仙人掌青贮青贮组合物中不同程度的干草(以干物质为基础,分别为0、10、20、30和40%)。在仙人掌混合青贮的组合物中加入gliricidia干草会对干物质恢复产生二次效应,pH值,NH3-N,缓冲能力,有氧稳定性,乙醚提取物,P,K,Na,和锌(p<0.05)。密度降低了,废水损失,最大pH值,矿物质,非纤维碳水化合物,Ca,Mg,Fe,和锰(p<0.05),达到最大pH的时间增加以及pH上升趋势,干物质,有机物,粗蛋白,中性洗涤剂纤维,酸性洗涤剂纤维,和B(p<0.05)。在实验条件下,仙人掌青贮中包含20%至30%的gliricidia干草,可以改善青贮的化学成分和发酵参数。
Cactus pear is used in large proportions in diets for small ruminants in semiarid regions. However, its exclusive use is not recommended due to the low fiber and crude protein content and the high water and mineral content, leading to metabolic disorders, low dry matter intake, and weight loss. The use of mixed cactus silage associated with protein and fibrous sources seeks to overcome the deficits in dry matter, fiber and crude protein, aiming to improve the nutritional quality of the diets that will be offered to ruminants. Thus, the use of gliricidia hay in cactus pear silages could represent an important alternative to improve the nutritional and fermentative characteristics of the ensiled material. Therefore, our aim was to evaluate the fermentation dynamics, nutritional characteristics, and aerobic stability of mixed silages of cactus pear combined with different levels of gliricidia hay. This was a completely randomized experimental design with five treatments and five repetitions. The treatments consisted of different levels of inclusion of gliricidia hay (0, 10, 20, 30, and 40% on a dry matter basis) in the composition of mixed cactus pear silages. The inclusion of gliricidia hay in the composition of mixed silages of cactus pear resulted in a quadratic effect for dry matter recovery, pH, NH3-N, buffering capacity, aerobic stability, ether extract, P, K, Na, and Zn (p < 0.05). There was a reduction in density, effluent losses, maximum pH, mineral matter, non-fiber carbohydrates, Ca, Mg, Fe, and Mn (p < 0.05), and an increase in the time to reach maximum pH as well as an upward trend in pH, dry matter, organic matter, crude protein, neutral detergent fiber, acid detergent fiber, and B (p < 0.05). Under experimental conditions, the inclusion of gliricidia hay between 20 and 30% in cactus pear-based silage provided an improvement to the chemical composition and fermentation parameters of the silages.