补充蛋白质酶和不同营养密度的饮食在成长-完成猪的补充
Sehyun Park1, Jihwan Lee2, Won Yun3
1Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea.
Journal of animal science and technology
|April 17, 2024
概括
蛋白酶补充剂和高营养密度饮食显著改善猪生长性能和营养消化能力. 蛋白酶降低了氨和血液尿素,而营养素较高的饮食增加了平均每日益.
科学领域:
- 动物营养 动物营养
- 消化系统生理学 消化系统生理学
- 农业科学 农业科学
背景情况:
- 优化猪的营养利用和生长性能对于可持续的动物农业至关重要.
- 蛋白酶酶可以增强蛋白质的消化,减少的分泌.
- 饮食中的营养密度在满足生长完成猪的代谢需求方面发挥着关键作用.
研究的目的:
- 研究蛋白酶补充剂和不同营养密度对猪生长表现的影响.
- 评估这些饮食策略对营养素消化能力和环境排放的影响.
主要方法:
- 一项为期15周的研究,涉及108头杂交猪 ([兰德雷斯 × 约克郡] × 杜洛克) 的初始体重为18.74±3.46公斤.
- 猪被分配到6种饮食治疗3×2的因数排列:三种蛋白酶水平 (没有,蛋白酶A,蛋白酶B) 和两个营养密度 (基础需求与更高的营养水平).
- 测量了生长性能 (体重,平均每日增长),原蛋白 (CP) 和总能量的看似全道消化能力 (ATTD),血液尿素 (BUN) 和气体排放 (氨,硫化).
主要成果:
- 在生长期间,高营养素 (HN) 饮食增加了与基底营养素 (BN) 饮食相比,原蛋白 (CP) 的平均每日增加 (ADG) 和ATTD.
- 蛋白酶补充剂在生长期间改善了体重 (BW) 和ADG,以及CP和总能量的ATTD,同时在完成期间降低了BUN.
- 蛋白酶补充剂减少了氨 (NH3) 和硫化 (H2S) 的排放. 营养密度和蛋白酶之间的相互作用在特定条件下改善了CP的料转换率和ATTD.
结论:
- 蛋白酶补充剂提高了猪生长性能和营养消化能力,同时减少了有害的排放.
- 营养密度较高的饮食可以改善生长中的猪的生长和营养利用.
- 蛋白酶补充和优化营养密度的联合策略为生猪生产提供了显著的好处.
更多相关视频
14:35Post-Myocardial Infarction Heart Failure in Closed-chest Coronary Occlusion/Reperfusion Model in Göttingen Minipigs and Landrace Pigs
Published on: April 17, 2021
8.5K
05:52Author Spotlight: Induction of Experimental Endotoxemic Shock in Pigs for Studying Hemodynamic and Respiratory Failure
Published on: December 8, 2023
942
相关概念视频
Proteins: Dietary Sources and Requirements
2.2K
Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
2.2K
Overview of Protein Metabolism
4.5K
Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
4.5K
Oxygen Requirements and Growth Patterns
2.5K
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
2.5K
Bacterial Protein Maturation
744
Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
744
Designing Growth Media for Bioreactors
78
Growth media provide essential nutrients that support cell growth and metabolism, thereby enhancing the yield of valuable products such as enzymes, antibiotics, and biomass. Designing an effective growth medium involves balancing all components to prevent nutrient limitations or toxic excesses, both of which can impair growth and reduce product yields.Composition of a Typical Growth MediumA typical growth medium contains carbon and nitrogen sources, salts, vitamins, trace elements, and...
78
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
