• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium of Modelling in Pig and Poultry Production >Estimating Real-time Individual AminoAcid Requirements in Growing-finishing Pigs: Towards a New Definition of Nutrient Requirements in Growing-finishing Pigs?
【24h】

Estimating Real-time Individual AminoAcid Requirements in Growing-finishing Pigs: Towards a New Definition of Nutrient Requirements in Growing-finishing Pigs?

机译：估算生长精加工猪中的实时个体氨基酸要求：朝着生长精加工猪的营养需求的新定义？

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Energy, amino acids, minerals, vitamins and water are essential nutrients that must be provided to animals in adequate amounts to live (maintenance), grow and produce (reproduction, lactation, etc.). For a given growing animal and at a given time during its development, the daily nutrient requirements can be estimated as the sum of the requirements for maintenance and growth. These requirements are estimated for each nutrient or its precursor taking into account the efficiency with which each nutrient is used for each metabolic function. However, pigs are raised in groups and, within each group, animals significantly differ in body weight and growth potential and consequently nutrient requirements vary greatly among them. Phase-feeding is widely used in growing-finishing pig operations and, in this context of feeding populations, nutrition requirements are rather defined as the amount of nutrients needed for specified production purposes, which in farm animals consist of optimal production outputs(e.g. maximal growth rate, optimal feed conversion, etc.). Unfortunately, the optimal population responses are obtained with levels of nutrients that satisfy the requirements of the most demanding pigs, with the result that most of the pigs in the population receive more nutrients than they need to express their growth potential. Precision farming or precision agriculture is an agricultural management concept that relies on the existence of in-field variability. Precision feeding allows the feeding of individual pigs with daily tailored diets, the composition of which is determined in real time using the available information from the farm, which in the context of precision feeding is daily feed intake and body weight measurements. The real-time individual pig nutrient requirement estimated using each pig pattern of feed intake and growth represents a fundamental paradigm shift in pig nutrition because pig nutrient requirements are no longer a population attribute estimated from data collected in previous trials, but a dynamic process that evolves independently for each animal and is regulated by its own intrinsic (e.g. genetics, health, nutritional status, etc.) and extrinsic (e.g. environmental and social stressors, management, etc.) modulating factors. Precision feeding is being proposed to alleviate the limitations of group-feeding systems in which optimal dietarynutrient levels are determined a priori and served to heterogeneous populations over specified periods of time. It is demonstrated that feeding pigs individually with diets tailored daily to their individual lysine requirements made it possible to obtain similar intake and growth results to conventional feeding systems. Precision feeding reduced lysine intake by more than 25% and feeding costs by more than 8%. Precision feeding is an effective approach to improve nutrient utilization efficiency, to reduce nutrient excretion and feed costs, and thus it is proposed to the swine industry as an essential tool to enhance sustainability andcompetitiveness.
机译：能量，氨基酸，矿物质，维生素和水是必需的营养素，必须提供给动物的足够量（维持），生长和生产（繁殖，哺乳等）。对于给定的生长动物和在其开发期间的给定时间，每日营养要求可以估计为维护和增长的要求总和。考虑到每种代谢功能使用的效率，每种营养素或其前体估计这些要求。然而，猪以团体升高，并且在每组内，动物体重和生长潜力的动物显着不同，因此营养需求在它们中有很大差异。相馈广泛用于生长整理的猪操作，并且在这种饲养群体的背景下，营养要求被定义为指定生产目的所需的营养素量，在农场动物中由最佳生产输出组成（例如最大增长速率，最佳馈送转换等）。遗憾的是，通过满足最苛刻的猪的要求的营养素水平获得最佳人口响应，结果是，群体中大多数猪比表达其增长潜力所需的营养素更多。精密耕作或精密农业是一种农业管理理念，依赖于现场变异性的存在。精密饲料允许使用每日量身定制的饮食的单个猪，其组合物实时使用来自农场的可用信息来确定，这在精密饲料的背景下是每日进料进料和体重测量。使用饲料摄入和生长的每个猪模式估计的实时单独的猪营养需求代表了猪营养的基本范式转变，因为猪营养要求不再是从以前的试验中收集的数据估计的人口属性，而是一种发展的动态过程独立于每只动物，由其本身的内在（例如遗传学，健康，营养状况等）和外在（例如环境和社会压力源，管理等）调节调节因素。精度馈送正被提出，以减轻在该最佳dietarynutrient水平被确定先验和投放到异质群体的时间超过规定期间喂食组的系统的限制。据证明，用每天为其单独的赖氨酸要求定制的饮食单独喂养猪使得可以获得与常规进料系统类似的摄入和生长结果。精密喂食降低赖氨酸摄入量超过25％并喂食成本超过8％。精密喂养是提高营养利用效率的有效方法，以降低营养排泄和饲料成本，从而提出猪工业作为增强可持续性和竞争力的重要工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号