评估科布700基因型的潜在生长和身体组成
R M Gous1, H Walters2, S J Rochell3
1School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa.
British poultry science
|May 24, 2024
概括
这项研究跟踪了Cobb 700肉的生长,分析了男性和女性的化学和物理成分. 成年人体重在28年内显著增加,而生长率保持一致.
科学领域:
- 动物科学动物科学
- 禽畜科学 禽畜科学 禽畜科学
- 营养生物化学 营养生物化学
背景情况:
- 了解肉的生长和组成对于优化养计划和遗传选择至关重要.
- 之前的研究提供了基线数据,但由于遗传学和管理方面的进步,需要持续监测.
研究的目的:
- 从化到15周,量化Cobb 700雄性和雌性肉的生长和组成变化 (化学和物理).
- 将当前的肉生长参数与历史数据进行比较.
主要方法:
- 在200只雄性和200只雌性Cobb 700小中使用了四阶段的养计划.
- 每周称重和定期采样 (0-105天) 测量羽毛重量,身体成分 (水,蛋白质,脂质,灰) 和物理成分分析.
- 全度分析用于描述身体组成部分之间的关系.
主要成果:
- 成熟的男性和女性的体重分别为8.38公斤和6.94公斤. 蛋白质和脂质含量在性别之间差异很大.
- 对于没有羽毛的体重来说,成熟率在两种性别中都是相似的 (0.0417/d男性,0.0402/d女性).
- 羽毛成熟率有所不同 (男性0.0324/d,女性0.0357/d),男性的成熟羽毛重量较高.
- 目前成熟的体重比28年前高,成熟率没有变化.
结论:
- 在过去的28年里,Cobb 700肉的生长加速了,特别是在成熟体重的肉中.
- 在男性和女性无羽毛的身体中,脂质和蛋白质之间存在明显的全度关系.
- 增长速度参数保持稳定,这表明遗传选择的重点是实现更大的成熟大小.
更多相关视频
11:22Using RNA-mediated Interference Feeding Strategy to Screen for Genes Involved in Body Size Regulation in the Nematode C. elegans
Published on: February 13, 2013
12.4K
14:06Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays
Published on: November 12, 2012
46.5K
相关概念视频
Pedigree Analysis
84.2K
Overview
84.2K
Multiple Allele Traits
34.2K
The Concept of Multiple Allelism
34.2K
Genetic Variation
274
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles,...
Genes exist in different versions called alleles,...
274
Heritability
196
Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
196
Monohybrid Crosses
230.0K
Overview
230.0K
