1
Which of the following are true for microbial protein?
(A) . Diet does not affect the amino acid composition of individual species of
bacteria or protozoa per se.
(B) . Protein quality of protozoa and bacteria are quite similar.
(C) . True digestibility of protozoa is higher than bacteria
(D) . Protozoa numbers are lower on high roughages diets than concentrate
diet.
(©). Microbial protein contains 20 % nucleic acid.
Choose the correct answer from the options given below:
EXPLANATION
Rumen Microbiology
- Nutritional Characteristics of Rumen Microbes:
- Amino acid composition of specific bacterial and protozoal strains is relatively constant and unaffected by dietary variations (True).
- Protein biological value is high and comparable between bacteria and protozoa (True).
- Protozoal protein has higher true digestibility ($\approx 85-90\%$) than bacterial protein ($\approx 75-80\%$) due to thinner cell boundaries (True).
- Protozoal counts are higher on moderate concentrate/soluble starch diets than on low-quality all-roughage diets (Statement D is False).
- Microbial crude protein contains $\approx 18-22\%$ (average $20\%$) nucleic acids (True).
- nalysis:
- Statements (A), (B), (C), and (E) are true. Hence, Option 2 is correct.
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