Department of Animal Science, School of Veterinary Medicine and Animal Science, Federal University of Bahia (UFBA), Salvador, Brazil.
Department of Ruminant Production, State University of Southwest Bahia, Itapetinga, Bahia, Brazil.
Anim Sci J. 2020 Jan-Dec;91(1):e13435. doi: 10.1111/asj.13435.
This study aimed to investigate the effects of chitosan and whole raw soybean on nutrient intake, apparent digestibility, nitrogen utilization, microbial protein synthesis, blood metabolites, feeding behavior, ruminal fermentation, digesta kinetics, and reticular flow of nutrients of buffaloes. Four ruminally-cannulated Murrah buffaloes (351 ± 15 kg of initial BW) were randomly assigned according to a 4 × 4 Latin square design. Treatments were arranged as 2 × 2 factorial arrangement: the first factor was whole raw soybean (WRS), and the second factor was chitosan (CHI) with or without their inclusion in diets. Intake and apparent digestibility of ether extract (p < .01; p = .04, respectively), non-fiber carbohydrates intake (p = .03) and apparent ruminal digestibility of dry matter (p = .01) were affected by diets. An interaction effect or tendency was observed for microbial nitrogen (p = .09), concentrations, ruminal ammonia nitrogen (p = .05), total volatile fatty acid (p = .03). Association of chitosan with whole raw soybean has potential effects as a modulator of rumen fermentation; therefore, chitosan can be applied as an alternative non-ionophore for Murrah buffaloes.
本研究旨在探究壳聚糖和全豆粕对水牛养分摄入、表观消化率、氮利用率、微生物蛋白合成、血液代谢物、采食行为、瘤胃发酵、食糜动力学和营养物质网胃流出的影响。选用 4 头安装有永久性瘤胃瘘管的摩拉水牛（初始体重 351±15kg），采用 4×4 拉丁方设计，随机分为 2 组，每组 2 个处理，每个处理 2 头。处理方式为 2×2 因子设计：第一个因子为全豆粕（WRS），第二个因子为壳聚糖（CHI），且日粮中添加或不添加这两种物质。日粮对乙醚提取物的采食量和表观消化率（p<.01;p=.04）、非纤维碳水化合物的采食量（p=.03）和干物质在瘤胃中的表观消化率（p=.01）有影响。微生物氮（p=.09）、浓度、瘤胃氨态氮（p=.05）和总挥发性脂肪酸（p=.03）有处理间互作或互作趋势。壳聚糖与全豆粕联合使用可能对瘤胃发酵有调节作用；因此，壳聚糖可作为替代莫能菌素应用于摩拉水牛。
