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Related Concept Videos

Proteins: Dietary Sources and Requirements01:28

Proteins: Dietary Sources and Requirements

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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...
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Key Elements for Plant Nutrition02:35

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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Overview of Protein Metabolism01:21

Overview of Protein Metabolism

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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...
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What is Metabolism?00:52

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Overview of Metabolism01:40

Overview of Metabolism

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Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
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Regulation of Metabolism01:19

Regulation of Metabolism

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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Related Experiment Video

Updated: Oct 12, 2025

In Ovo Feeding of Commercial Broiler Eggs: An Accurate and Reproducible Method to Affect Muscle Development and Growth
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Nutrition and Metabolism: Foundations for Animal Growth, Development, Reproduction, and Health.

Guoyao Wu1

  • 1Department of Animal Science, Texas A&M University, College Station, TX, USA. g-wu@tamu.edu.

Advances in Experimental Medicine and Biology
|November 22, 2021
PubMed
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Animal protein is vital for human nutrition and health. Optimizing animal diets and utilizing by-products can meet rising global demand, improve animal health, and reduce environmental impact.

Keywords:
Animal proteinBiomedicineDietDiseaseHealthIntestine

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Area of Science:

  • Animal Science
  • Nutritional Science
  • Biomedical Research

Background:

  • Global population growth necessitates a 60% increase in animal-sourced protein by 2050.
  • Animals are crucial for food, fiber, biomedical research, and therapeutic protein production.
  • Farm animals require specific nutrients for efficient feed conversion and optimal health.

Purpose of the Study:

  • To explore the role of animal nutrition in meeting global protein demands.
  • To investigate the impact of nutrient interactions on animal health and disease prevention.
  • To understand the gut microbiome's role in animal health and antibiotic alternatives.

Main Methods:

  • Review of nutrient requirements for mammals, birds, fish, and crustaceans.
  • Analysis of the small intestine's role in nutrient absorption and immune interaction.
  • Examination of animal by-product feedstuffs for nutritional benefits.

Main Results:

  • Adequate nutrition is key to preventing metabolic and infectious diseases in animals.
  • Intestinal microbes influence gut and whole-body health, offering alternatives to antibiotics.
  • Animal by-products enhance growth, health, and feed efficiency across various animal species.

Conclusions:

  • Optimizing animal nutrition is essential for sustainable food production and human health.
  • Understanding gut health and microbial interactions can mitigate antimicrobial resistance.
  • Sustainable animal agriculture practices are vital for reducing environmental impact and ensuring future protein supply.