Enhanced feeding value of high-moisture-corn in swine liquid feeding

高水分玉米提高猪液体饲料的饲用价值

• 批准号: 346325-2006
• 负责人: DeLange, Cornelis
• 金额: $ 3.12万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325465
• 关键词: Enhanced; feeding; value; moisture; corn

Liquid feeding of swine is an emerging technology in North America.  Based on studies conducted in Europe, liquid feeding has many potential benefits over conventional dry-feeding, such as improved gut health, reduced Salmonella prevalence, use of inexpensive co-products from the food and alcohol industry, flexibility and ease of diet preparation and delivery, and enhancement of the feeding value of ingredients with enzymes and beneficial bacteria.  There is little information on the benefits of liquid feeding pigs with high moisture corn (HMCorn)-based diets, which is important because HMCorn is one of the main drivers of swine liquid feeding in central Canada.  It is hypothesized that steeping with enzymes and controlled fermentation with bacterial inoculants can improve the feeding value of HMCorn for pigs fed liquid diets.  Experiments will be conducted to determine the efficacy of using enzymes (phytase, amylase, proteases) for steeping of HMCorn to improve nutrient utilization by pigs in HMCorn-based diets, and to use lactic acid (LA) bacteria to aid fermentation, reduce pathogenic load and enhance digestive function in pigs.  Dietary treatments established will be based on controlled steeping (using different sources and levels of phytase and amylase) and fermentation (inoculation with different types and combinations of LA producing bacteria) with studies using micro-fermentation units, prior to conducting in vivo study studies with starter and growing-finishing (G/F) pigs in a state-of-the-art swine liquid feeding unit.  The findings will contribute to reduced environmental impact of pig production, reduced reliance on in-feed antibiotics (and thus improved pork safety and animal welfare), and reduced feeding costs. Moreover, some outcomes could be translated to improve the performance of pigs fed dry diets.

猪的液体饲喂在北美是一项新兴技术。根据在欧洲进行的研究，液体饲喂比传统的干饲有许多潜在的好处，例如改善肠道健康，减少沙门氏菌的流行，使用来自食品和酒精工业的廉价副产品，饮食准备和交付的灵活性和容易性，以及提高含有酶和有益菌的成分的饲用价值。关于用高水分玉米（HMCorn）为基础的日粮饲喂液体猪的益处的信息很少，这是很重要的，因为HMCorn是加拿大中部猪液体饲料的主要驱动力之一。假设用酶浸泡和用细菌接种剂控制发酵可以提高HMCorn对饲喂液体饲料的猪的饲养价值。将进行实验以确定使用HMCorn的效果。酶（植酸酶、淀粉酶、蛋白酶）用于浸泡HMCorn以改善猪在基于HMCorn的饮食中的营养利用，并使用乳酸（LA）细菌来帮助发酵，降低致病负荷，增强猪的消化功能。建立的日粮处理将基于控制浸泡（使用不同来源和水平的植酸酶和淀粉酶）和发酵（接种不同类型和组合的产LA细菌）与使用微发酵单元的研究，在最先进的猪液体饲喂装置中对仔猪和生长肥育（G/F）猪进行体内研究之前，减少对饲料中抗生素的依赖（从而提高猪肉安全性和动物福利），并降低饲养成本。此外，一些结果可以转化为提高猪饲喂干饲料的性能。