确定新的玉米品种对猪和肉的营养价值
Hongrui Cao1, Lei Yan2, Xiaoming Song1
1State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, China.
Frontiers in veterinary science
|February 23, 2024
概括
使用分子标记辅助选择开发的新玉米品种显示了动物料的潜力. 虽然高铁和低酸盐的玉米影响了猪和肉的消化能力和骨头长度,但总体能量值基本没有变化.
科学领域:
- 农业科学 农业科学
- 动物营养 动物营养
- 生物技术是生物技术.
背景情况:
- 分子标记辅助选择 (MAS) 育种技术正在推动作物发展.
- 新的玉米品种,包括高铁,耐和低酸盐玉米,已经被种植.
- 评估这些改良的玉米品种对牲畜的营养价值至关重要.
研究的目的:
- 评估三种新型玉米品种 (高铁,耐,低酸盐) 在生长猪和肉的营养价值.
- 为了比较这些玉米品种的营养消化能力,可用的能量,氨基酸和矿物沉积,与传统玉米进行比较.
- 了解MAS种植玉米对动物生长性能和环境因素的影响.
主要方法:
- 进行了两个实验:一个是生长的猪 (15x2 Youden方形设计),另一个是肉 (完全随机设计).
- 饮食包括高铁玉米,耐玉米,低酸盐玉米和常规玉米.
- 测量的主要参数是营养物质消化能力,可用的能量,氨基酸含量和矿物沉积 (例如铁,).
主要成果:
- 高铁玉米含有明显更多的铁 (29.608毫克/公斤),耐玉米的含量比传统玉米高 (0.0057毫克/公斤).
- 在猪中,高铁玉米降低了中性清洁剂纤维的消化能力,而高铁和低酸盐玉米降低了酸性清洁剂纤维的消化能力和可消化的能量.
- 在 brojlers中,低酸盐和高铁玉米导致阴长度缩短,低酸盐玉米减少了便中的铁分泌.
结论:
- MAS育种可以产生新的玉米品种,为猪和肉生产提供特定的营养增强.
- 虽然一些营养参数受到影响,但这些玉米品种的可用能量值通常与传统玉米相似.
- 这些新型玉米品种的应用可能会带来好处,特别是对于生长的猪来说,考虑到生长性能和环境影响.
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