Veterinary Clinical Medicine-II

CLINICAL SIGNS IN NUTRITIONAL HAEMOGLOBINURIA

Acute cases

• Rapid onset after 2-4 weeks of calving, course is 3-5 days, red coloured urine, anorexia, weakness, severe depression of milk yield.

Less acute cases

• Eats and gives milk for 24 hours after red coloured urine.
• Dehydration occurs quickly.
• Haemoglobinuria, inappetence, severe depression of milk yield.
• Heart rate is increased and bounding.
• Augmented irregular pulse.
• Temperature – Normal or raised (40^ºC).
• Mucous membrane – pallor, later yellow.
• Dyspnoea is obvious.
• Diarrhoea; sometimes constipation.
• Mastitis.
• Gangrenous necrosis of tail, feet, pastern, ear and teeth (occasionally).
• Milk yield reduced.
• Suffer for 2-3 days and then recumbent followed by death in few hours /days.

If survive

• Weakness and Pica only during convalescence.
• There may be additional sign of 'P' deficiency is recumbency.
• Affects ruminal digestion.
• Lame and bone disease
• Infertility.
• Pica.
• Fall of milk yield.
• Retarded growth and unthriftiness.
• Weakness and convalescence

In marginal deficiency- general condition of the herd is normal