Sperm abnormalities as possible indicators of rabbit chronic heat stress

 A. Finzi, P. Morera, G. Kuzmisky


Rabbit sperm abnormalities have been studied in conditions of chronic heat stress. Very significant increases (P<0.001) have been observad. The max1mum was in the 1ourth week of stress when total abnormalities were 40.5 ± 13.2 % (+122.5 % in comparison with the pre-stress period); tail abnormalitles were 26.5 ± 10.5 % (+94.9 %); broken spermatozoa 11.1 ± 7.1 % (+552.9 %); bent tails 2.3 ± 1.7 % (+76.9 %); coiled tails 24.1 ± 10.3 % (+164.8 %). Head abnormalities and cytoplasmic droplets showed a decrease in the first weeks followed by a late increase. Combinad ratas have been studied to be usad as chronic heat stress indexes. Ratio between percentages of broken spermatozoa and tail abnormalities showed a quick and constant increase, while ratio between percentages of cytoplasmic droplets and coiled tails decreaseél to zero lrom the second to the fourth week to increase regularly after this period. Simultaneous observation of the two ratio trends should permit to judge about the time lag rabbits have been exposed to heat stress.

Full Text:



BAGLIACCA M., CAMILLO F., PACI G., 1987. Temperatura e performance di conigli maschi riproduttori. Riv. di Coniglicoltura, 24 (10), 61- 65.

BERGONZONI M.L., ZAMBELLI D., SAMOGGIA G., 1994. Influenza del diluitore, della temperatura e del periodo di conservazione del seme nella F.A. cunicola. Riv. di Coniglicoltura 31 (4), 37-40.

CAMPS J., CEREZA J.M., ROSELL V., 1985. Efectos del calor y frio excepcionales en la producción de los conejares. in: Act. X Symp. de Cunicultura ASESCU, Barcelona, nov. 1985, 237-248.

COLIN M., 1985. Les problemes liés a l'été dans l'élevage du lapin. Cuniculture, 12 (3), 177-180.

FINZI A., KUZMINSKY G., MORERA P., AMICI A., 1986. Alcuni aspetti della termotolleranza nel coniglio. Riv. di Coniglicoltura, 23 (12), 51-55.

FINZI A., MORERA P., KUZMINSKY G., 1988. Acclimation and repeatability of thermotolerance parameters in rabbit. in: Proc. 4th World Rabbit Congr., Budapest, oct. 1988, vol. 2, 419-426.

GALLI A., B0SISIO M., 1986. Quality semen stored at + 15º /16ºC and fertility in swine artificial insemination. In : Proc. Int. Congr. on Fertility Laboratory Techniques II, Bergamo, 155-159.

KASA I.W., THWAITES C.J., 1992. Semen quality in bucks exposed to 34ºC for 8 hours or either 1 or 5 days. J. Appl. Rabbit Res. 15, 560-568.

KUZMINSKY G., MORERA P., FINZI A., 1990. Tempi di raccolta dell'eiaculato come misura della libido nel coniglio. In: Atti III Meet. Naz. Studio della efficienza riproduttiva degli animali di interesse zootecnico, Bergamo, nov. 1990, 139-143.

KUZMINSKY G., FAUSTO A.M., MORERA P., 1995. Morphological abnormalities of rabbit spermatozoa studied by scanning electron microscope and quantified by light microscope. (to be published). https://doi.org/10.1051/rnd:19960512

LEBAS F., COUDERT P., ROUVIER R., ROCHAMBEAU H. de, 1984. Le lapin. Elevage et pathologie. F.A.O., Rome, ltaly.

LEYUN M., 1985. Control ambiental. Boletín de Cunicultura, 30 (8), 30-33.

PANELLA F., CASTELLINI C., 1990. Fattori ambientali e genetici che influiscono sulle caratteristiche del seme di coniglio. Riv. di Coniglicoltura 27 (8), 39-41.

SAACKE R. G., 1970. Morphology of the sperm and its relationships to fertility. In : Proc. III Techn. Cong. Anim. Reprod. Artif Ins. Nat. Assoc. Animal Breeding, Chicago, 17-30.

SWIESTRA E.E., FOOTE R.H., 1965. Duration of spermatogenesis and spermatozoon transport in the rabbit based on cytological changes, DNA synthesis and labelling with tritiated thymidine. Am. J. Anat., 116 (2), 401-412. https://doi.org/10.1002/aja.1001160206

VIRAG G., MEZES M., BERSENYI A., 1992. Effect of independent factors on semen characteristics in rabbits. J. Appl. Rabbit Res. 15, 499-504.

WELCH W. J., 1993. Come le cellule reagiscono allo stress. Le Scienze, 51 (299), 50-57.

Abstract Views

Metrics Loading ...

Metrics powered by PLOS ALM


Cited-By (articles included in Crossref)

This journal is a Crossref Cited-by Linking member. This list shows the references that citing the article automatically, if there are. For more information about the system please visit Crossref site

1. Effect of seasonality on quality and fertility of cryopreserved New Zealand white rabbit semen under Egyptian conditions
A.M. Fadl
World Rabbit Science  vol: 28  issue: 3  first page: 123  year: 2020  
doi: 10.4995/wrs.2020.13627


 Universitat Politècnica de València


Official journal of the World Rabbit Science Association (WRSA)


e-ISSN: 1989-8886     ISSN: 1257-5011   https://doi.org/10.4995/wrs