feed aditives, their classification, mode of action & use in ruminants
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Feed additives are non-nutritive products added to animal feed to improve feed quality, animal performance, health, and product quality. They are classified into five groups - technological, sensory, nutritional, zootechnical, and coccidiostats/histomonostats. Common feed additives include enzymes, antibiotics, ionophores, probiotics, oligosaccharides, and yeast cultures. Their modes of action include improving nutrient digestibility and availability, stabilizing rumen pH, and altering rumen microbial activity. Common uses of feed additives are to increase milk and meat production, improve feed efficiency, and reduce heat stress.
feed aditives, their classification, mode of action & use in ruminants
- 1. FEED ADITIVES, THEIR CLASSIFICATION, MODE OF ACTION & USES IN RUMINANTS Submitted to: Dr. Tanveer Ahmad Submitted by: Muhammad Umar 11-arid-959 DVM 3rd Semester
- 2. Feed Additives • Non-nutritive product • Added to feed; to improve the quality of feed to improve the animals’ performance & health • Improve feed quality • Affect characteristics of animal product • Promote growth • control disease • Affect the color of ornamental birds and fish • Fulfill the nutritional needs
- 3. Cont …… minimize the incidence of bloat Acidosis reduce liver abscesses control problems of foot rot control parasitic diseases
- 4. Classification Feed Additives are divided into five group. Technological additives Improve feed quality hygiene characteristics Sensory additives Improve the palatability of feed Increase the appitite
- 5. Cont …… Nutritional additive Provide specific nutrient to animal Zootechnical additives These additives improve the nutrient status of the animal Coccidiostats and Histomonosta They control the intestinal health
- 6. Mineral as supplement Ca is necessary in blood coagulation P play role in muscle contraction, energy production and appetite. Mn play role in milk production. Mg involve metabolism of carbohydrate lipid and protein . K,Na and Cl maintain acid:base balance and body fluid .
- 7. Vitamins • Vitamin B12 is produced for ruminant animals • Needed for; cell growth energy metabolism wool production • Vitamin A play role in; healthy skin nerve tissue help in building up resistance to infection eyesight. • Vitamin E play role in; normal reproduction • Vitamin K; necessary for the maintenance of normal blood coagulation • Vitamin D is necessary in; normal bone formation
- 8. Enzyme as Feed Additives • All enzyme feed additives are considered under the regulation by the FDA. • Enzyme used to remove anti-nutritional factor from feed • increase the digestibility of existing nutrient • They also effect gastrointestinal microflora • on the ruminant animal itself • Motivatethe rumen microbial synthesis of protein and VFA production. • Enzyme play role in fiber digestion.
- 9. Mode of Action • Enzyme-mediated alteration of the feed prior to consumption likely has ramifications on ruminal and post-ruminal digestion of nutrients • Enzyme act directly on feed and increases digestive activity through effect on ruminal microorganism • Enzyme remain active in lower digestive track • play role in fiber digestion • Their main role to improve the efficiency of feed utilization in ruminants • reduce waste production
- 10. Antibiotics • formation of bacterial cell • causes the bursting of cell • act on gram +ve and –ve bacteria • Example; Bacitracin Streptomycin Virginiamycin Flavomycin
- 11. Ionophores • transform the microbial fermentation • increase the utilization of feed and gain • Lasalocid and Monensin etc • change the types of fatty acids • increase capture of feed energy • performance improves
- 12. Probiotics • Opposite of antibiotics • have a +ve effect on the host • detoxify the harmful metabolites • helpful in improving nutrient availability • Use as milk replacers • increase the growth of beneficial micro-flora • Decrease the growth of pathogenic bacteria
- 13. Oligosaccharides • Fermented in the intestine • Nutrient source for lactic acid producing bacteria • Fermented by favorable bacteria • Microbial number may be increased
- 14. Yeast Cultures Progress the… feed efficiency Feed gain Health Increased DMI pH of rumen nutrient digestibility
- 15. Uses of feed additive • Greater milk production • Increasing the protein and fat in milk • Improve DMI • Motivate VFA production • Increase digestion • Stabilize the rumen environment and ph
- 16. Cont.. • Improve growth • Improve feed efficiency • reduced heat stress
- 17. NSP • Enhance the digesta-viscosities • also on the intestinal microflora • located in the cell walls • partial hydrolysis of pentosans and ß-glucans
- 18. Coccidio-stat • prevent and treat coccidiosis in livestock • It act as ionophores. • prevent coccidiosis in sheep and goats.
- 19. MGA • Suppress estrus and Increase feed efficiency • It elevates progesterone levels • Inhibits the heat • ovulation in animal
- 20. Buffers • combination of acid and salt • Decrease the rate of acidosis • Example; Potassium carbonate Magnesium oxide THANK YOU
Editor's Notes
- #15: Progress the… feed efficiencyFeed gainHealth Increased DMI pH of rumennutrient digestibilityProgress the… feed efficiencyFeed gainHealth Increased DMI pH of rumennutrient digestibilityProgress the… feed efficiencyFeed gainHealth Increased DMI pH of rumennutrient digestibilityProgress the… feed efficiencyFeed gainHealth Increased DMI pH of rumennutrient digestibility