Digestive System of Fowl : MCQs

By Skumar -

 Digestive System of Fowl : MCQs

Introduction

The digestive system of fowl is specially adapted for rapid and efficient utilization of feed to meet the high energy demands of growth, egg production, and maintenance. Since poultry lack teeth, digestion involves both mechanical and enzymatic processes carried out by specialized organs such as the crop, proventriculus, gizzard, and intestines. Proper digestion and absorption of nutrients are essential for optimal health and productivity in poultry.

1. Fowl do not have teeth because:

A. They swallow liquid feed
B. Feed grinding occurs in gizzard
C. Saliva digests food
D. Crop digests food

✅ Answer: B
📝 Explanation: Mechanical grinding is done by the gizzard, replacing teeth.
❌ A, C, D: Incorrect—saliva and crop do not grind feed.

2. The first organ of digestion in fowl is:

A. Crop
B. Proventriculus
C. Beak
D. Gizzard

✅ Answer: C
📝 Digestion begins when feed enters through the beak.
❌ Others act later.

3. Crop mainly functions to:

A. Digest protein
B. Store feed
C. Absorb nutrients
D. Emulsify fats

✅ Answer: B
📝 Crop stores and softens feed.
❌ A, C, D occur elsewhere.

4. The glandular stomach of fowl is called:

A. Gizzard
B. Crop
C. Proventriculus
D. Duodenum

✅ Answer: C
📝 Proventriculus secretes HCl and pepsin.
❌ Gizzard is muscular.

5. Main function of gizzard is:

A. Enzyme secretion
B. Absorption
C. Mechanical grinding
D. Fermentation

✅ Answer: C
📝 Thick muscles grind feed.
❌ Enzymes not secreted here.

6. Grit in poultry feed helps in:

A. Protein digestion
B. Fat absorption
C. Feed grinding
D. Enzyme secretion

✅ Answer: C
📝 Grit aids gizzard grinding.
❌ Others unrelated.

7. Protein digestion begins in:

A. Crop
B. Gizzard
C. Proventriculus
D. Duodenum

✅ Answer: C
📝 Pepsin starts protein digestion.
❌ Duodenum continues digestion.

8. Which enzyme digests starch in poultry?

A. Pepsin
B. Amylase
C. Lipase
D. Trypsin

✅ Answer: B
📝 Amylase digests carbohydrates.
❌ Others digest protein or fat.

9. Bile is secreted by:

A. Pancreas
B. Gall bladder
C. Liver
D. Duodenum

✅ Answer: C
📝 Liver produces bile; gall bladder stores it.

10. Bile helps in digestion of:

A. Protein
B. Carbohydrate
C. Fat
D. Minerals

✅ Answer: C
📝 Bile emulsifies fats.

11. Main site of digestion and absorption is:

A. Crop
B. Gizzard
C. Small intestine
D. Caeca

✅ Answer: C

12. Which part receives pancreatic juice?

A. Ileum
B. Duodenum
C. Caeca
D. Colon

✅ Answer: B

13. The paired blind sacs in poultry are:

A. Crop
B. Gizzard
C. Caeca
D. Cloaca

✅ Answer: C

14. Caeca are important for:

A. Protein digestion
B. Fat digestion
C. Limited fermentation
D. Egg formation

✅ Answer: C

15. Water absorption occurs mainly in:

A. Crop
B. Proventriculus
C. Caeca and colon
D. Gizzard

✅ Answer: C

16. Cloaca is common opening for:

A. Digestive system only
B. Urinary system only
C. Reproductive system only
D. Digestive, urinary & reproductive

✅ Answer: D

17. Digestion time in poultry is approximately:

A. 24 hours
B. 12 hours
C. 3–6 hours
D. 48 hours

✅ Answer: C

18. Which vitamin helps calcium absorption?

A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin K

✅ Answer: B

19. Amino acids are absorbed into:

A. Lymph
B. Blood capillaries
C. Caeca
D. Liver directly

✅ Answer: B

20. Fatty acids are absorbed mainly through:

A. Blood
B. Lymph
C. Crop
D. Gizzard

✅ Answer: B

21. Which structure increases absorption area?

A. Grit
B. Villi
C. Crop
D. Caeca

✅ Answer: B

22. Saliva in poultry contains:

A. Lipase
B. Amylase (small amount)
C. Trypsin
D. Pepsin

✅ Answer: B

23. Which organ replaces teeth?

A. Crop
B. Proventriculus
C. Gizzard
D. Duodenum

✅ Answer: C

24. Large intestine mainly functions in:

A. Digestion
B. Absorption of nutrients
C. Water absorption
D. Protein digestion

✅ Answer: C

25. Which is NOT part of digestive tract?

A. Liver
B. Crop
C. Gizzard
D. Cloaca

✅ Answer: A
📝 Liver is accessory organ.

26. Pancreatic enzymes include all EXCEPT:

A. Amylase
B. Lipase
C. Pepsin
D. Protease

✅ Answer: C

27. Protein is finally digested into:

A. Peptides
B. Fatty acids
C. Amino acids
D. Glucose

✅ Answer: C

28. Carbohydrates are absorbed as:

A. Starch
B. Glycogen
C. Glucose
D. Cellulose

✅ Answer: C

29. Caeca are absent in:

A. Chicken
B. Duck
C. Turkey
D. Pigeon

✅ Answer: D

30. Function of jejunum is mainly:

A. Storage
B. Grinding
C. Absorption
D. Fermentation

✅ Answer: C

31. Fat soluble vitamins include:

A. B & C
B. A, D, E, K
C. B1, B2
D. C only

✅ Answer: B

32. Digestive tract of poultry is:

A. Long
B. Very long
C. Short
D. Absent

✅ Answer: C

33. Which organ secretes HCl?

A. Crop
B. Proventriculus
C. Gizzard
D. Duodenum

✅ Answer: B

34. Fermentation is minimal in poultry because:

A. No caeca
B. Short intestine
C. No microbes
D. No water

✅ Answer: B

35. Which nutrient requires bile for digestion?

A. Protein
B. Carbohydrate
C. Fat
D. Minerals

✅ Answer: C

36. Digestion of fat mainly occurs in:

A. Crop
B. Gizzard
C. Duodenum
D. Caeca

✅ Answer: C

37. Function of ileum is:

A. Grinding
B. Absorption
C. Storage
D. Secretion

✅ Answer: B

38. Excreta in poultry includes:

A. Feces only
B. Urine only
C. Feces + uric acid
D. Sweat

✅ Answer: C

39. Which acid helps protein digestion?

A. Lactic acid
B. Citric acid
C. Hydrochloric acid
D. Acetic acid

✅ Answer: C

40. Main digestive enzyme for fats:

A. Pepsin
B. Trypsin
C. Lipase
D. Amylase

✅ Answer: C

41. Microvilli are present in:

A. Crop
B. Gizzard
C. Small intestine
D. Caeca

✅ Answer: C

42. Poultry digestion efficiency is:

A. Low
B. Moderate
C. High
D. Very poor

✅ Answer: C

43. Which organ temporarily stores feed?

A. Crop
B. Gizzard
C. Proventriculus
D. Ileum

✅ Answer: A

44. Which vitamin is synthesized in caeca?

A. Vitamin A
B. Vitamin B
C. Vitamin D
D. Vitamin K only

✅ Answer: B

45. Feed conversion ratio in poultry is:

A. High
B. Poor
C. Efficient
D. Zero

✅ Answer: C

46. Digestion of cellulose in poultry is:

A. Complete
B. Efficient
C. Limited
D. Absent

✅ Answer: C

47. Which organ connects stomach to intestine?

A. Crop
B. Gizzard
C. Duodenum
D. Oesophagus

✅ Answer: C

48. Poultry lacks:

A. Liver
B. Pancreas
C. Teeth
D. Gizzard

✅ Answer: C

49. Function of pancreatic protease:

A. Fat digestion
B. Protein digestion
C. Carb digestion
D. Mineral absorption

✅ Answer: B

50. Final absorption of nutrients occurs in:

A. Gizzard
B. Proventriculus
C. Small intestine
D. Crop

✅ Answer: C

Conclusion

In fowl, digestion and absorption of nutrients occur through a well-coordinated system designed for efficiency and speed. Mechanical grinding by the gizzard and enzymatic action in the small intestine ensure effective breakdown and absorption of carbohydrates, proteins, fats, vitamins, and minerals. Understanding the digestive physiology of poultry is crucial for formulating balanced diets, improving feed efficiency, and achieving better growth and egg production.



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