The present study was carried out to investigate the effect of different seasons on length and duration of estrus as well as to observe the behavioral changes and physiological peculiarities during estrus period. Three climatic seasons and age groups were considered: summer (March-June), rainy (July-October) and winter (November-February); A (6-9 month), B (9-12 month) and C (>12 month). Estrus...

Pomfrets are one of the most ample high priced fisheries of the Bay of Bengal, Bangladesh. The present study featuring the comparison of the life history parameters of three Pomfrets i.e. Silver (Pampus argenteus), Chinese (P. chinensis) and Black (Parastromateus niger) is based on the monthly length frequency data from the commercial landings from July 2015 through June 2016. The length (TL) o...

The present study was undertaken to measure estrus response (%), interval to estrus (hr), duration of estrus and conception rate (%) after synchronization in Black Bengal does. Synchronization of estrus was done by intramuscular injection of synthetic PGF2α as dinoprost. Two trials were conducted with twenty cyclic fertile adult Black Bengal does. The age and body weight of the does were betwee...

Semen from six adult male Black Bengal goats (Capra hircus) was collected to compare the fresh and frozen-thawed semen quality and investigate its relationship with the fertility. Each collected samples was divided into two parts: One part of semen was used as fresh and another part was filled into 0.50 ml straws, sealed, cooled (5 ˚C) and equilibrated for freezing.In both cases, semen was dilu...

In the present study tissue samples were collected from external nares, nasal cavity, nasopharynx and larynx of six healthy adult Black Bengal goat. The samples were routinely prepared for histological observation. The external nares, and nasopharynx were lined by stratified squamous epithelium, and nasal cavity was ciliated pseudostratified columnar epithelium. Numerous hair follicles were ide...

The present study was conducted to measure various biometric parameters of intact/normal acrosomes (AC) collected respectively from caput, corpus and cauda epididymis and vas deferens of Black Bengal buck. Giemsa stained acrosomes were measured after camera lucida drawings. Observations revealed dimensional characters of the acrosomal cap diminished gradually and significantly (p<0.01, p<0.05) ...