ISSN: 2223-2133 (Online), 1815-8986 (Print)
Vol. 10, Number 1/2, December 2010
Parasitic Infection in Association with Serum Copper, Phosphorus, and Heamatological values in sheep and goats of Central Trinidad
Aphzal Mohammed, Mervyn Campbell, Fayez Youssef

A study was done to investigate the possible association between parasitic infections, serum Copper, Phosphorus and haematological values in sheep and goats of Central Trinidad. Single faecal, whole and clotted blood samples were taken from one month to four year old sheep (n=66) and goats (n=66) of local farms. Complete blood counts and the degree of parasitic infection were determined on whole blood and faecal samples, respectively. In plasma and serum were determined total protein, fibrinogen, Copper (Cu) and Phosphorus (P) concentrations, respectively. Fifty five percent of sheep and 85% of goats displayed a mild to moderate degree of mixed parasitic infections. Haemoglobin, PCV, and Cu values varied significantly (P< 0.05) with the degree of parasitic infection in goats and slightly in sheep (p<0.07, 0.05). Lower Hb and PCV values were found in goats without an apparent parasitic infection, an occasional and a 2+ degree of parasitic infection. Lower mean serum Cu concentrations were found in sheep without evidence of parasitic infections and in goats with both 1+ and 4+ degree of mixed infections. Twenty five to 37% of parasitized sheep and goats had serum Cu (< 0.5 mg/L) and P (< 40 mg/L) Below Critical Levels (BCL). The degree of mixed parasitic infections was somewhat related to the lowered Hb and PCV mean values and serum Cu concentrations more so in goats than in sheep. Both regular treatment for parasitism and mineral supplementation would impact positively on the growth and productivity of sheep and goats of Central Trinidad

Key words: Copper (Cu), Phosphorus (P), Below Critical Level, Haemoglobin, PCV, degree of parasitic infection