ANSC 3270 EXAM REVIEW FULLY SOLVED
EDITION WITH 100% CORRECT ANSWERS
2026
◉Affected species/age of Blackleg . Answer: Affects young (3 months -
2 years) cattle & sheep
◉Clinical signs of Blackleg . Answer: 1. Sudden death of thrifty
cattle/sheep
2. Lameness
3. Prostration
4. Tremors
◉Diagnosis of Blackleg . Answer: 1. Muscle swelling & crepitation
2. Ultrasound
3. Postmortem culture/analysis of infected tissue
◉Treatment of Blackleg . Answer: Penicillin (often ineffective)
◉Cause of Blackleg . Answer: Spores in muscles activated due to
damage or low oxygen
,◉Malignant Edema agent . Answer: Clostridium septicum causes this
disease.
◉Affected species of Malignant Edema . Answer: various species
◉clinical signs of Malignant Edema . Answer: 1. Anorexia
2. High fever
3. Lesions
4. swollen areas that pit when touched
5. Skin & tissue sloughing
6. Death
◉diagnosis of Malignant Edema . Answer: 1. PCR assay/culture
2. Important to rule out anthrax
3. Not reliable in animals dead >24 hours
◉treatment of Malignant Edema . Answer: 1. Broad spectrum antibiotics
2. Supportive care
◉prevention of Malignant Edema . Answer: Vaccination & disposal of
carcasses >>> Treatment
,◉transmission of Malignant Edema . Answer: Associated with
contaminated wounds (trauma, castration, docking, unsanitary
vaccination & parturition)
◉Infectious necrotic hepatitis agent . Answer: Clostridium novyi
◉affected species of Infectious Necrotic Hepatitis . Answer: mostly in
sheep, well-fed animals
◉clinical signs of Infectious Necrotic Hepatitis . Answer: sudden death
with no clinical signs
◉diagnosis of Infectious Necrotic Hepatitis . Answer: 1. lesions
2. grayish, yellow necrosis in liver
3. extensive capillary rupturing
◉prevention of Infectious Necrotic Hepatitis . Answer: 1. vaccination
2. control of liver flukes
◉Bacillary Hemoglobinuria (Red Water Disease) agent . Answer:
Clostridium haemolyticum
, ◉affected species of Bacillary Hemoglobinuria . Answer: 1. mostly in
cattle
2. Found in pastures with pooling, alkaline water
◉clinical signs of Bacillary Hemoglobinuria . Answer: 1. Severe
depression
2. Fever
3. Abdominal pain
4. Labored breathing
5. Red urine
6. Anemia
7. Jaundice
◉diagnosis of bacillary hemoglobinuria . Answer: 1. dark urine
2. PCR assay
◉treatment of bacillary hemoglobinuria . Answer: high doses of
penicillin (early)
◉sudden death syndrome agent . Answer: Clostridium sordelli
◉affected species of sudden death syndrome . Answer: feedlot cattle
EDITION WITH 100% CORRECT ANSWERS
2026
◉Affected species/age of Blackleg . Answer: Affects young (3 months -
2 years) cattle & sheep
◉Clinical signs of Blackleg . Answer: 1. Sudden death of thrifty
cattle/sheep
2. Lameness
3. Prostration
4. Tremors
◉Diagnosis of Blackleg . Answer: 1. Muscle swelling & crepitation
2. Ultrasound
3. Postmortem culture/analysis of infected tissue
◉Treatment of Blackleg . Answer: Penicillin (often ineffective)
◉Cause of Blackleg . Answer: Spores in muscles activated due to
damage or low oxygen
,◉Malignant Edema agent . Answer: Clostridium septicum causes this
disease.
◉Affected species of Malignant Edema . Answer: various species
◉clinical signs of Malignant Edema . Answer: 1. Anorexia
2. High fever
3. Lesions
4. swollen areas that pit when touched
5. Skin & tissue sloughing
6. Death
◉diagnosis of Malignant Edema . Answer: 1. PCR assay/culture
2. Important to rule out anthrax
3. Not reliable in animals dead >24 hours
◉treatment of Malignant Edema . Answer: 1. Broad spectrum antibiotics
2. Supportive care
◉prevention of Malignant Edema . Answer: Vaccination & disposal of
carcasses >>> Treatment
,◉transmission of Malignant Edema . Answer: Associated with
contaminated wounds (trauma, castration, docking, unsanitary
vaccination & parturition)
◉Infectious necrotic hepatitis agent . Answer: Clostridium novyi
◉affected species of Infectious Necrotic Hepatitis . Answer: mostly in
sheep, well-fed animals
◉clinical signs of Infectious Necrotic Hepatitis . Answer: sudden death
with no clinical signs
◉diagnosis of Infectious Necrotic Hepatitis . Answer: 1. lesions
2. grayish, yellow necrosis in liver
3. extensive capillary rupturing
◉prevention of Infectious Necrotic Hepatitis . Answer: 1. vaccination
2. control of liver flukes
◉Bacillary Hemoglobinuria (Red Water Disease) agent . Answer:
Clostridium haemolyticum
, ◉affected species of Bacillary Hemoglobinuria . Answer: 1. mostly in
cattle
2. Found in pastures with pooling, alkaline water
◉clinical signs of Bacillary Hemoglobinuria . Answer: 1. Severe
depression
2. Fever
3. Abdominal pain
4. Labored breathing
5. Red urine
6. Anemia
7. Jaundice
◉diagnosis of bacillary hemoglobinuria . Answer: 1. dark urine
2. PCR assay
◉treatment of bacillary hemoglobinuria . Answer: high doses of
penicillin (early)
◉sudden death syndrome agent . Answer: Clostridium sordelli
◉affected species of sudden death syndrome . Answer: feedlot cattle
