Morphological changes in the gonads of the Sabi ram experimentally infected with Trypanosoma congolense

Aire, Tom A.; Akingbemi, B. T.; Ruziwa, S.D.; Nuru, H.F.; Dzoma, B. M.; Joshua, R.A.; Chabbhra, R.

doi:10.1016/s0921-4488(00)00205-4

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…Ikede (1979) reported orchitis in experimental T. brucei-infected ram. In a similar study, T. congolense in Sabi ram produced seminiferous tubular atrophy and mononuclear infiltration of the testis and lesion in the epithelium of the corpus epididymis (Aire et al, 2001). T. congolense infection in goat caused testicular necrosis and infiltration of mononuclear cells (Raheem 2008).…”

Section: Testicular Lesionsmentioning

confidence: 92%

A Review of Trypanosomosis-Induced Reproductive Dysfunctions in Male Animals

Raheem¹

2014

Agrosearch

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Trypanosomosis has been recognized as one of the major limitations to livestock production in the African continent. In addition to its clinical manifestations such as weight loss, lethargy, weakness and dullness, reproductive organs are also affected which has led to reduction of fertility in infected farm animals. This paper highlighted the major dimensions of reproductive dysfunctions induced by African animal trypanosomosis in male animals with emphasis on ruminants and simultaneously discussed how the pathogenesis lead to the observed reproductive disorders with the aim of identifying areas of ambiguity where further research need to be focused. Testicular degeneration, reduced libido, orchitis and poor semen characteristics have been established in infected males. Studies of receptors of these reproductive hormones under trypanosomosis infection are very rare in literature and hence, the involvement of endocrine glands most especially the anterior pituitary and hypothalamus remains inexplicit enough. A sequential investigation of the relationship between the concurrent pathological changes in reproductive and endocrine organs, reproductive hormones and their respective receptors as well as the reproductive performance of animals suffering from trypanosomosis are suggested. This will improve our knowledge on the pathogenesis of trypanosomosis as it affects reproduction while promoting development and implementation of strategies to contain the disease in food animals.

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Section: Testicular Lesionsmentioning

confidence: 92%

A Review of Trypanosomosis-Induced Reproductive Dysfunctions in Male Animals

Raheem¹

2014

Agrosearch

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“…The rams used for this purpose could not be younger as they were intended for semen collection. The rams need adequate body conditions and have to be trained to use the dummy and artificial vagina, as in similar experiment (Tanyildizi and Tü rk 2004) even using the electroejaculation (Aire et al 2001). Before enrollment to the study, all rams were out to pasture, stabled during the night, with irregular administration of commercial concentrates; once a year an anthelminthic drug (benzimidazole) was administered.…”

Section: Animalsmentioning

confidence: 99%

Influence of gastrointestinal trichostrongylidosis on ram fertility

Gaglio

Poglayen²,

Capelli³

et al. 2010

Polish Journal of Veterinary Sciences

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A study on the influence of gastrointestinal trichostrongyles on ram fertility was performed. Two groups of semen donor rams (Sarda breed) were utilized; one was experimentally infected with Haemonchus contortus, Trichostrongylus colubriformis and Teladorsagia circumcincta and the other was used as a control group. In all animals, coprological, haematological and reproductive parameters were studied. The results suggest that the parasites had a limited effect with some changes in phosphorus, cholesterol and chlorine levels. In our experience the parasitic burden produced no significant change on ram fertility.

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“…The disease is characterized by acute, subacute or chronic courses which may include fever, anaemia, emaciation and high mortality rate in virtually all species of domestic animals (Radostitis, 2007). Several studies have shown that typanosomosis has adverse effect on the reproductive organs thus causing reproductive disorders such as reduced libido (Sekoni et al, 2004, Raheem et al, 2009, aspermatogenesis, testicular degeneration and infertility in male animals (Losos & Ikede, 1972;Anosa & Isoun, 1980;Akingbemi et al, 1995;Aire et al, 2001). Female goats experimentally infected with the parasite also exhibited severe lesions in the endocrine glands (Mutayoba et al, 1994), and a rapid decline in plasma luteinizing hormone and testosterone (Mutayoba et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Morphometric changes in the gonads of the West African dwarf bucks experimentally infected with Trypanosoma vivax and Trypanosoma brucei and response due to diminazine aceturate treatment

2023

JoSVAS

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Trypanosomosis, one of the major diseases affecting livestock production in Africa has been associated with reproductive disorders. The disease has not been extensively studied in goats especially the West African Dwarf (WAD) goat. The morphology of the gonads of WAD bucks experimentally infected with Trypanosoma (T.) vivax and Trypanosoma brucei and treatment with Diminazine aceturate were investigated in this study. The study lasted a period of 20 weeks, the first 3 weeks were used to acclimatize the animal to their new environment. The remaining 16 weeks were used to carry out the experiment. Two species of trypanosome were used for the experiment; T. brucei (NITR CT/28- Federe strain) and T. vivax (A field strain obtained from an abattoir). The experiment was divided into three stages tagged Pre-infection (A), infection (B) and treatment (C) while the animals were also divided into control group and infected groups- Trypanosoma brucei and Trypanosoma vivax groups. Biometric parameters that include testicular weight, height and others testicular and epididymal indices were measured according to standard techniques. Data were summarized with mean± SEM and analysed using ANOVA. There were no significant changes in body weight between the control group and treated groups with either T. brucei or T. vivax. The little reduction in scrotal circumference during infection and subsequent increase during post treatment were not significant (P > 0.05) compared to the control. The Testicular weight, testicular length and epididymal weight were not significantly affected during infection with both T. brucei and T. vivax. Tubular diameter and epithelia height of the seminiferous tubules were significantly (P≤0.05) lower in the T. brucei and T. vivax infected groups compared to the control. On the other hand, the epididymal tubular diameter and epididymal epithelia height were not significantly (P>00.05) affected by the treatment. The study showed that the fertility impairment sequel to trypanosomosis is possibly due to alteration in the biometric parameter of the testis.

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Morphological changes in the gonads of the Sabi ram experimentally infected with Trypanosoma congolense

Cited by 3 publications

References 13 publications

A Review of Trypanosomosis-Induced Reproductive Dysfunctions in Male Animals

A Review of Trypanosomosis-Induced Reproductive Dysfunctions in Male Animals

Influence of gastrointestinal trichostrongylidosis on ram fertility

Morphometric changes in the gonads of the West African dwarf bucks experimentally infected with Trypanosoma vivax and Trypanosoma brucei and response due to diminazine aceturate treatment

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