BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The term “broad spectrum antibiotics” was originally used to designate antibiotics that were effective against both gram-positive and gram-negative bacteria, in contrast to penicillin, which is effective chiefly against gram-positive organisms, and streptomycin, which is active primarily against gram-negative bacteria.

Detailed explanation-2: -Benefits of Antibiotic use in Animal Feed Chlorotetracycline, oxytetracyclin and penicillin also show an improved growth rate, but little effect on mortality.

Detailed explanation-3: -Oxytetracycline: “Terramycin” This antibiotic is broad-spectrum and is used to reduce liver abscesses, prevent and treat shipping fever, E. coil diarrhea and Pasteurella multocida pneumonia. The dosage is 10 mg per pound per day for seven to 14 days.