相关实验视频

Updated: May 20, 2025

The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

Published on: September 7, 2015

混合品牛肉 × 乳制品屠宰小牛中甲排放表型的重复性和遗传参数

K K Johansen¹, M Kargo², O F Christensen¹

¹Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, 8000 Aarhus C, Denmark.

Animal : an international journal of animal bioscience

|March 26, 2025

概括

与奶牛一起养殖牛肉母牛可以减少小牛的甲排放. 这项研究发现甲特征的可重复性和遗传性变异,这表明在牛肉与乳制品杂交计划中有可能存在遗传选择.

科学领域:

动物科学动物科学
农业科学农业科学
环境科学环境科学

背景情况:

交叉繁殖牛肉与奶牛,以获得牛肉和奶牛小牛的数量正在增加.
将甲 (CH4) 减少纳入育种目标需要准确的相关特征的表型.
在足够数量的动物中测量甲表型对于捕获遗传变异至关重要.

研究的目的:

通过使用非侵入性嗅探系统,研究牛肉x奶制品杂交小牛中甲表型的重复性.
估计甲排放特征的遗传参数和遗传性.
评估将甲特征纳入未来育种目标的可行性.

主要方法:

用自动料摄入盒中的红外气体传感器测量CH4和CO2度的9,113只牛肉牛犊的表型.
综合活量和料摄入数据来计算每日甲产量.
使用遗传父母模型分析了重复性和估计的遗传能力.

主要成果:

在CH4和CO2度特征中发现了可重复的变化,每日和每周平均值的重复性更高.
周平均度显示出最高的重复性,与GreenFeed和呼吸室相比.
在活体重,干物摄入量,CH4和CO2度方面发现了适度的遗传性. 每天的甲产量具有0.28 (sire) 和0.18 (dam) 的遗传性.

结论:

对于牛肉 x 乳制品屠宰小牛的甲排放特征,存在可重复和遗传的变异.
甲排放特征可以纳入用于牛肉和奶制品交配的牛肉的繁殖目标.
嗅探系统提供了一种可行的方法来表型化这种生产系统中的甲排放.

关键词:

在乳制品上的牛肉.气候气候气候气候气候交叉繁殖是一种交叉繁殖.遗传性遗传性是可以继承的.嗅探器嗅探器嗅探器

更多相关视频

Measuring Liver Mitochondrial Oxygen Consumption and Proton Leak Kinetics to Estimate Mitochondrial Respiration in Holstein Dairy Cattle

Measuring Liver Mitochondrial Oxygen Consumption and Proton Leak Kinetics to Estimate Mitochondrial Respiration in Holstein Dairy Cattle

Published on: November 30, 2018

Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

Published on: July 19, 2018

相关概念视频

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

Dihybrid Crosses

Dihybrid Crosses

Monohybrid Crosses

Monohybrid Crosses

Chi-square Analysis

Chi-square Analysis

The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...

Trihybrid Crosses

Trihybrid Crosses

Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...

Plant Breeding and Biotechnology

Plant Breeding and Biotechnology

Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.