[Pragati]

Crude protein (CP) isn’t just about the percentage on the label — it’s about how quickly and efficiently that protein is broken down and how amino acids are released for absorption. This is the essence of protein kinetics. Birds, especially broilers, grow rapidly and have short gut transit times, making the timing of amino acid release crucial.

1. Fast-Acting Proteins
• Hydrolyzed and absorbed quickly in the small intestine.
• Provide a rapid surge of amino acids, matching the immediate energy release from carbohydrates.
• Beneficial in starter diets and during phases of rapid tissue growth.
• Examples:
• Soy protein isolates / soybean meal
• Fish meal
• Blood plasma proteins
• Hydrolyzed proteins or peptides
2. Slow-Acting Proteins
• Broken down more gradually, leading to sustained amino acid release.
• Help reduce nitrogen wastage and support longer-term metabolic needs.
• Useful in grower and finisher diets for balanced deposition of lean tissue and reduced catabolism.
• Examples:
• Sunflower meal
• Rapeseed / mustard meal
• Cottonseed meal
• DDGS (Distillers Dried Grains with Solubles)

🔹 Why the Balance Matters

• Synchrony with Energy – Fast-acting proteins match immediate glucose availability, while slow-acting proteins provide amino acids later in the digestive window.
• Improved Efficiency – Reduces amino acid deamination (wastage) and excess nitrogen excretion.
• Age-Specific Needs –

• Chicks: Need more fast-acting proteins for early growth.
• Older birds: Can handle mixed kinetics with slow-acting sources plus enzyme supplementation.

🔹 Role of Enzymes in Kinetics

• Proteases accelerate breakdown of slow-acting proteins.
• Xylanases & cellulases reduce fiber barriers, improving amino acid release from plant meals.
• This allows alternative proteins to perform closer to soybean meal in digestibility.

WHAT ARE YOUR VIEWS ON PROTEIN KINETICS?

CAN YOU GUESS THE CORRECT RATIO OF SLOW:FAST DIGESTING PROTEIN?

[D KANNATHASAN,]

proteins are the primary source of nitrogen

[D KANNATHASAN,]

Foot and Mouth Disease

[D KANNATHASAN,]

Nutrition is absolutely vital in today’s livestock production because it directly influences animal health, productivity, and profitability

[D KANNATHASAN,]

In hot weather, the best time to feed poultry in production sheds is during the coolest parts of the day—typically early morning and late evening. This timing helps reduce the birds’ metabolic heat load, which is the internal heat generated during digestion.

[D KANNATHASAN,]

that causes the unexpected death of fast-growing birds

[D KANNATHASAN,]

Probiotics are a game-changer in modern feed formulation, especially as the livestock industry shifts away from antibiotic growth promoters.

[D KANNATHASAN,]

they’re raised in high-density environments where disease can spread rapidly

[D KANNATHASAN,]

<mtext>DM (%)</mtext><mo>=</mo><mrow><mo fence=”true”>(</mo><mfrac><mtext>Dry weight/</mtext><mtext>Wet weight</mtext></mfrac><mo fence=”true”>)</mo></mrow><mo>×</mo><mn>100</mn>

[D KANNATHASAN,]

34 to 38

[D KANNATHASAN,]

design, compliance, and marketing to create a label that informs, attracts, and sells

[Md]

34-37%

[Pragati]

DM% = (Weight of sample after drying/Weight of sample before drying)*100

Can you please be elaborate in your questions, so that the responses will be specific?

[Michael]

Understood

[Michael]

35-49%