TY  - JOUR
T1  - Changes in Some Haematological Values Associated with Mixed <I>Trypanosoma congolense</I> and <I>Haemonchus contortus</I> Infection in Yankassa Sheep
AU - Okaiyeto, S.O. AU - Ajanusi, O.J. AU - Sackey, A.K. AU - Tekdek, L.B. 
JO  - Veterinary Research
VL  - 3
IS  - 2
SP  - 9
EP  - 13
PY  - 2010
DA  - 2001/08/19
SN  - 1993-5412
DO  - vr.2010.9.13
UR  - https://makhillpublications.co/view-article.php?doi=vr.2010.9.13
KW  - Trypanosoma congolense
KW  -Haemonchus contortus
KW  -haematology
KW  -Yankassa sheep
KW  -infection
KW  -Nigeria
AB  - An experimental study on joint infection with <I>Trypanosoma congolense</I> (Tc) and <I>Haemonchus contortus</I> (Hc) was conducted in 30 female Yankassa sheep aged between 12 and 25 months, divided into 5 groups of 6 animals (TcHc, HcTc, Hc, Tc and control). Two groups received a single infection with either <I>H. contortus </I>or<I> T. congolense</I> and two other groups were infected with <I>T. congolense</I> followed by <I>H. contortus</I> (TcHc) in one and <I>H. contortus</I> followed by <I>T. congolense </I>(HcTc) in the other. One group was kept as uninfected control. All the trypanosome-infected groups (Tc, TcHc, HcTc) showed different prepatent periods, the Tc group was patent at day 10 post-infection (pi), while TcHc and HcTc were patent at day 5 and 7 pi, respectively. High mean parasiteamia was observed during the acute phase of the infection in the trypanosome infected groups, which declined during the chronic phase giving mean parasitaemic scores of 3.2&plusmn;0.1 and 0.3&plusmn;0.1. There was a rapid fall in the Packed Cell Volume (PCV) of the TcHc group, which reaches a minimum decline at day 25 pi. It was also observed that higher faecal egg count corresponded to decrease in PCV. All the <I>Haemonchus</I> infected groups developed higher eosinophils values, which was indicative of the activities of tissue invading helminthes.
ER  -