February 2010

Struggle against perinatal lamb mortalities by using techniques of improvement and control of breeding on the level of Tiaret area (Algeria)

In order to struggle against perinatal lamb mortalities, one hundred and twenty of Algerian Rumbi ewes were used in our study. These ewes belong to a private farm located in the region of Tiaret; our work was based on the programming of three reproduction seasons over a period of two years (September 2004 to September 2006). During each season, our sheep have received treatment of oestrous synchronization, control and...

Author(s): S. A. Abdelhadi, A. L. Niar, N. L. Smail and F. Z. Abdelhadi

February 2010

Erythrocyte osmotic fragility of Wistar rats administered ascorbic acid during the hot-dry season

The experiment was carried out with the aim of investigating the effect of an antioxidant ascorbic acid (AA) on erythrocyte osmotic fragility (EOF) of Wistar rats during the hot-dry season. Fifteen adult Wistar rats administered with AA at the dose of 100 mg/kg per os and individually served as experimental animals, and 15 others administered orally with sterile water were used as control animals. The...

Author(s): A. W. Alhassan, A. Y. Adenkola,  A. Yusuf, Z. M. Bauchi, M. I. Saleh and V. I. Ochigbo

February 2010

Assessment of viability, chromatin structure stability, mitochondrial function and motility of stallion fresh sperm by using objective methodologies

Methodologies, such as flow cytometry and computer assisted sperm analysis (CASA), provide objective, reproducible, rapid and multi-parametric evaluation of semen quality. In this study, semen samples collected from six stallions were analysed for viability (by propidium iodide), chromatin stability by sperm chromatin structure assay (SCSA) and mitochondrial membrane potential by JC-1 using flow cytometry. Total and...

Author(s): Giannoccaro Alessandra, Lacalandra Giovanni Michele, Filannino Angela, Pizzi Flavia, Nicassio Michele, Dell’Aquila Maria Elena and Minervini Fiorenza

February 2010

Molecular genetic analysis of male alternative strategy and reproductive success in the polygynous mating bat Cynopterus sphinx

Cynopterus sphinx is known to use polygynous mating system based on availability of resources, called resource defense polygyny. It is the primary mating strategy adopted by C. sphinx. In addition to such harem groups, a number of single adult males roost solitarily, nearer to the harems. Identifying the reasons behind the solitary roosting behaviour of such adult males is essential to further understand...

Author(s): T. Karuppudurai and K. Sripathi