Pathomorphological changes in the alimentary system of Japanese quails naturally infected with Eimeria tsunodai

Open access

Abstract

The aim of this study was to investigate pathomorphological changes in the duodenum, jejunum, ileum, and caecum of Japanese quails naturally infected with Eimeria tsunodai. Samples of the intestines were collected from 6-week-old cockerels and hens before laying and from laying quails aged 12, 24, and 48 weeks. The tissue sections were stained with haematoxylin and eosin, PAS method according to McManus, and Ziehl-Neelsen method. Morphometric and morphological analyses of coccidia revealed that Eimeria tsunodai was responsible for the infection. Different developmental stages of the coccidia were observed almost exclusively in the caecum, and they led to the complete damage of caecal mucosa. The main changes observed in the caecum involved mucosal damage, atrophy of the folds and crypts, and mucosal desquamation. No significant inflammation changes were detected. The degree of damage to caecal mucosa increased with age and the greatest damage was noted at the age of 48 weeks. Eimeria tsunodai infections occur in Japanese quails during the entire laying period. Different developmental stages of coccidia are responsible for total damage to caecal mucosa.

1. Animal Protection Act of 21 August 1997 (Journal of Laws, 1997, No. 111, item 724).

2. Bashtar A., Abdel-Ghaffar F., Al-Rasheid K., Mehlhorn H., Al Nasr I.: Light microscopic study on Eimeria species infecting Japanese quails reared in Saudi Arabian farms. Parasitol Res 2010, 107, 409-416.

3. Mohammad N.H.: A study on the pathological and diagnosis of Eimeria species infection in Japanese quail. Bas J Vet Res 2012, 11, 318-333.

4. Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 on additives for use in animal nutrition.

5. Rotkiewicz A.: Dekodyfikacja postępowania administracyjnego w sprawach ochrony zwierząt. In: Dekodyfikacja postępowania administracyjnego a ochrona praw jednostki, edited by P. Krzykowski, UWM Publishing, Olsztyn, 2013, pp. 304-311.

6. Ruff M.D., Fagan J.M., Dick J.W.: Pathogenicity of coccidia in Japanese quail (Coturnix coturnix japonica). Poult Sci 1984, 63, 55-60.

7. Teixeira M., Teixeira Filho W.L., Lopes C.W.G.: Coccidiosis in Japanese quails (Coturnix japonica): Characterization of a naturally occurring infection in a commercial rearing farm. Braz J Poult Sci 2004, 6, 129-134.

8. Tsunoda K., Muraki Y.: A new coccidum of Japanese quails: Eimeria uzura sp. nov. Jap J Vet Sci 1971, 33, 227-235.

9. Tsutsumi Y., Tsunoda K.: Pathogenicity of Eimeria tsunodai from Japanese quails (Coturnix coturnix japonica) and susceptibility of the coccidium to some drugs. Jap J Vet Sci 1972, 34, 115-121.

10. Tsutsumi Y.: Eimeria tsunodai sp. nov. (Protozoa: Eimeriidae) a cecal coccidium of Japanese quails (Coturnis coturnix japonica). Jap J Vet Sci 1972, 34, 1-9.

Bulletin of the Veterinary Institute in Pulawy

The Journal of National Veterinary Research Institute in Pulawy

Journal Information


IMPACT FACTOR 2017: 0.811
5-year IMPACT FACTOR: 0.973



SCImago Journal Rank (SJR) 2016: 0.235
Source Normalized Impact per Paper (SNIP) 2016: 0.364

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 35 35 11
PDF Downloads 9 9 2