具有不同料效率表型的小型肉的生长表现,尸体特征,肉质和血液变量
Xiaofan Li1, Baolong Yang2, Zhaoqi Dong2
1Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Animal Genetics and Breeding and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
Poultry science
|June 24, 2023
概括
高效的肉具有较低的料摄入量和转换比率,体重增加. 这些料效率措施,剩余料摄入量 (RFI) 和剩余摄入量和获取量 (RIG) 影响子生产绩效,但不会显著改变体或肉质.
科学领域:
- 动物科学动物科学
- 养家禽生产 养家禽生产
- 营养效率 营养效率 营养效率
背景情况:
- 料效率对于优化肉产量至关重要.
- 剩余料摄入量 (RFI) 和剩余摄入量和增益 (RIG) 是评估料效率的关键指标.
- 了解这些效率措施对生产特征的影响对于遗传选择和农场管理至关重要.
研究的目的:
- 调查RFI和RIG对小型肉的生产绩效的影响.
- 分析料效率对尸体特征,肉质和血液生物化学参数的影响.
- 建立料效率指标与各种生产和生理参数之间的相关性.
主要方法:
- 从一个更大的群体中根据中间和极端RFI值选择90只雄.
- 选择的子根据RIG.重新划分成组.
- 测量和统计分析料转换比率 (FCR),平均每日料摄入量 (ADFI),残余体重增加 (RG),尸体特征,肉质和血液生物化学参数.
主要成果:
- 有效 (低RFI,高RIG) 的FCR和ADFI显著降低,RG更高 (P<0.05).
- 不高效RFI的皮肤脂肪产量较高,但尸体特征其他方面没有受到影响.
- RIG对乳腺肌肉的pH1产生了积极的影响,而整体料效率并没有显著改变肉质或大多数尸体特征. 效率较高的有较低的甘油三 (TG).
结论:
- 料效率措施 (RFI和RIG) 显著影响肉的生长性能和料利用率.
- 虽然这些指标不会影响整个尸体和肉质,但可以识别减少料消耗和增长速度的子.
- RIG显示与乳腺肌肉pH1的积极关联,RFI和RIG都与血液脂质概况相关.
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