在肉牛的料或以谷物为基础的终端食中进行补偿生长期间,甲排放和牛微生物群反应
Juan M Clariget1,2,3, Georgget Banchero1, Verónica Ciganda1
1Instituto Nacional de Investigación Agropecuaria, Colonia, Uruguay.
Translational animal science
|October 24, 2024
概括
牛肉牛的营养限制会影响甲强度. 在背景处理过程中低于最佳的增长,由于补偿增长,在完成过程中减少了甲强度,尽管总体排放量相似.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 环境科学 环境科学
背景情况:
- 营养策略影响肉牛中甲 (CH4) 排放.
- 营养限制后的补偿生长 (CG) 可能会改变CH4的产量.
- 饮食类型 (料与谷物) 影响反动物的新陈代谢和排放.
研究的目的:
- 评估背景增长率 (最佳与次优) 对安格斯方向盘的影响.
- 评估对甲排放,饮食消化能力,乳头发酵和微生物群的影响.
- 为了比较料和以谷物为基础的终端饮食的结果.
主要方法:
- 八十只安格斯牛被分配到最佳 (0.6-0.7公斤/天) 或低于最佳 (0.3-0.4公斤/天) 的背景增长率97天.
- 在背景研究之后,牛在84天的时间内完成了料或以谷物为基础的饮食.
- 分析了甲排放,饮食消化能力,小发酵参数和小微生物群.
主要成果:
- 低于最佳的背景环境导致背景环境下甲强度较低,但在完成过程中产生类似的排放.
- 与料加工相比,谷物加工减少了每日甲排放和甲强度.
- 谷物养的牛表现出改善的体重增加,饮食消化能力和特定的有益微生物种群.
结论:
- 之前的背景增长率没有影响最终饮食的消化能力,发酵或微生物群.
- 低于最佳的背景,由于增强的体重增加,在完成过程中降低了甲强度.
- 生命周期甲排放需要评估,因为低于最佳的增长需要更长的完成时间.
相关概念视频
01:01Production Efficiency
15.7K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
15.7K
01:20Overview of Nitrogen Metabolism
8.6K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
8.6K
01:18Amino Acid Catabolism
1.7K
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
1.7K
01:28Microbial Interactions: Predation
65
Microbial predation refers to the process by which one microorganism kills and consumes another to obtain nutrients and energy. It encompasses both bacterial and protozoan predators. This interaction plays a crucial role in shaping microbial communities and regulating nutrient cycling.Bacterial Predators: Epibiotic vs. EndobioticBacterial predators are classified based on their mode of attack as either epibiotic or endobiotic. Epibiotic predators, such as Vampirococcus, attach to the surface of...
65
01:27Microbes in the Production of Fermented Foods
327
Lactic acid bacteria (LAB) and molds are instrumental in fermenting plant-based foods to enhance preservation and ensure year-round availability. These microbial processes convert plant carbohydrates into organic acids and other metabolites that inhibit spoilage organisms and contribute to the sensory qualities of the final product.In sauerkraut production, cabbage goes through a microbial succession that starts with cocci such as Leuconostoc mesenteroides. These microbes begin fermentation by...
327
01:27Production of Antibiotics
265
Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...
265