简短的沟通:对减少奶牛甲排放的选择做出的反应的第一个见解
S Fresco1, D Boichard2, S Aguerre3
1Eliance, 149 rue de Bercy, 75595 Paris, France; Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350 Jouy-en-Josas, France.
Animal : an international journal of animal bioscience
|November 29, 2025
概括
养殖乳牛以减少甲排放是可能的. 将甲特征纳入育种目标可以每年减少高达0.38%的排放,而不会显著影响牛奶生产或生育能力.
科学领域:
- 动物科学动物科学
- 遗传学 是一个遗传学.
- 环境科学 环境科学
背景情况:
- 减少乳制品生产对环境的影响至关重要.
- 基因选择是减轻畜牧业甲排放的一个关键策略.
- 将甲排放特征纳入育种目标需要仔细考虑权衡.
研究的目的:
- 调查将甲排放特征纳入蒙特贝利亚德乳牛品种的繁殖目标的后果.
- 评估不同的选择场景,平衡甲减少与其他经济重要特征.
- 估计甲排放和相关特征的潜在遗传进展.
主要方法:
- 利用牛奶中红外光谱中预测的现有特征和甲特征之间的遗传 (共同) 差异.
- 为蒙特贝利亚德乳牛品种建模了三个不同的选择场景.
- 在每个场景下估计预期的遗传进步.
主要成果:
- 目前的繁殖指数需要将甲特征纳入有效减少.
- 实现甲排放量每年减少-1%会影响牛奶生产 (66%) 和生育能力 (65%) 的遗传收益.
- 一种平衡的方法 (情景3) 实现了每年减少0.38%的甲,同时保持了其他特征的90%的遗传收益.
结论:
- 遗传选择提供了一条可行的途径,以减少奶牛的甲排放.
- 将甲特征纳入育种目标是可行的,并且可以带来环境效益.
- 将甲减少与其他生产和生育特征相平衡,对于可持续的乳制品育种计划至关重要.
更多相关视频
10:29Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
Published on: March 21, 2016
12.8K
08:29Measuring Liver Mitochondrial Oxygen Consumption and Proton Leak Kinetics to Estimate Mitochondrial Respiration in Holstein Dairy Cattle
Published on: November 30, 2018
11.8K
相关概念视频
Limiting Reactant
60.8K
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in reality, the reactants are not always present in the stoichiometric amounts indicated by the balanced equation.
60.8K
Oxymercuration-Reduction of Alkenes
8.2K
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
8.2K
Phase I Reactions: Reductive Reactions
801
Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
801
Microbial Leaching
227
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
227
Upstream Processing
97
Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...
97
Production of Organic Acids
105
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
105
