Prevalence and determination of occupational diseases of

DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15437Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 79-82

Influence of farm conditions on the production of hygienic milk

DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15441Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 91-92

Egg morphometric analyses in chickens and some selected birds

DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15439Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 85-87

Anatomy of digestive and respiratory system of Indian grey mongoose (Herpestes edwardsii)

DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15438Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 83-84

The efficacy of diatomaceous earth in mixed formulation with other dusts and an insecticide against the pulse beetles, Callosobruchus chinensis L. and Callosobruchus maculatus (F.)

Effectiveness of diatomaceous earth (DE) and other inert dusts (kaolin powder, paddy husk ash, coal ash, alluvial soil, china clay) and a dust formulation insecticide carbaryl have been tested on the pulse beetles Callosobruchus chinensis L. and C. maculatus (F.). The bioassay of the dusts was done on adult beetles by mixing them with normal food (lentil and black gram seeds). The LD50 of the combined doses of mixtures for C. chinensis have been calculated as 12703.57 and 859.36 ppm for DE+ kaolin powder; 2432.78 and 274.00 ppm for DE+ paddy hush ash; 3430.036 and 426.16 ppm for DE+ coal ash; 12563.47 and 652.29 ppm for DE+ alluvial soil; 2242.81 and 325.76 ppm for DE+ china clay; and 21.33 and 14.45 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The LD50 of combined doses of different mixtures for C. maculatus have been calculated as 3640.65 and 503.74 ppm for DE+ kaolin powder; 54946.68 and 987.2394 ppm for DE + paddy hush ash; 61029.04 and 3229.436 ppm for DE+ coal ash; 61029 and 4265.599 ppm for DE+ alluvial soil; 4648.786 and 642.278 ppm for DE+ china clay; and 24.12017 and 15.47023 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The co-toxicity coefficient has been calculated and all ratios showed synergistic action. The highest co-toxicity coefficient was recorded as 88885.15 and 92107.22 in DE+ carbaryl at 24 and 48 h after treatment for C. chinensis and 78615.55 and 86004.88 in DE+ carbaryl at 24 and 48 h after treatment for C. maculatus. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15436Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 73-78

Constraints and prospects of carp production in Rajshahi and Natore districts, Bangladesh

This study was conducted in Rajshahi and Natore districts of northern area of Bangladesh for a period of three years (2007 to 2009). One hundred carp ponds were selected randomly and fish farmers were interviewed to reveal the existing constraints and prospects. Ten percent farmers reported multiple ownership as a problem and 16% farmers stated that lease value of pond is too high which reducing their profit level. Lack of quality fish seeds was reported by 33% farmers which results in low growth and high mortality of fishes. Nine percent carp farmers reported that inorganic fertilizers were not giving expected performances. Thirty three percent carp farmers failed to apply required inputs in due time due to lack of sufficient credit. Plankton bloom was recorded in 18% ponds. Three percent fish farmers were found to be affected by flood and drought. Eight percent farmers reported non-severe attack of disease. Fish poaching and poisoning were revealed as major constraints. Thirty six percent farmers mentioned lack of technical supports. Due to found constraints, the farmers failed to use inputs and experiences properly resulted in unsatisfactory fish production (3598.72±785.83 kg/ha/yr) to the carp farmers. Further research efforts are recommended to assess the specific impacts of recorded constraints on fish production.DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15435Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 69-72

The time of embryonic axis formation in quail eggs

DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15440Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 89-90

Embryonic development of the estuarine crab Neosarmatium indicum (Crustacea: Brachyura: Sesarmidae) from the mangroves of the Okinawa Island, Japan

The complete embryonic development of the mangrove sesarmid crab Neosarmatium indicum (A. Milne Edwards, 1868) was described based on internal and external morphological changes in live fertilized eggs reared in the laboratory. Several pairs of N. indicum were collected from the Nuha River mangrove swamp of the southern Okinawa Island, Japan, which is consisted mainly with the mangrove Kandelia candel, and densely populated by the genus Perisesarma and Neosarmatium indicum . The fertilized eggs were macrolecithal, centrolecithal and spherical in shape, filled with uniform dark olive colour, without evidence of any development. The diameter of fertilized egg was 0.36 mm, which increased to 0.47 mm before hatching. Embryo development from fertilized eggs to hatching (first zoea stage) lasted average of 16 days at 25°C and salinity at 80‰. Sixteen stages of embryonic development were categorized by following continuous observation using an optical DIC microscope equipped with digital camera, video camera and printer. After 24 hours of incubation, fertilized eggs became 32-celled stage of development. Before hatching, many chromatophores (mostly black) were evident in the abdominal segments and the telson of embryos. At the end of 16 days incubation, the zoea larvae were successfully hatched out, which were reared in the laboratory conditions for further development.DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15400Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 49-54

Anotated checklist of birds of Rajshahi University campus: An update

The result of bird watching at Rajshahi University (RU) campus during a period from March 2008 to July 2012 is presented in this article. A total of 159 species of birds under 102 genera, 36 families and 13 orders were observed. Highest number of species (76) and genera (41) are passerines, of which the highest number of species belongs to Corvidae family. Among the non-passerines (83 species) maximum number of species is under the family Ardeidae. Three species remained unidentified. Among the birds of RU campus 121 species are residents of Bangladesh; 38 species are migratory, of which 29 are winter visitors, 2 are summer visitors and 7 are passage migrants. Maximum of the bird species are habitants of the open woods.DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15399Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 39-47

Non-protein nitrogen compound poisoning in cattle

The study was carried out in Chittagong Veterinary and Animal Sciences University (CVASU), Chittagong to find out the causes of sudden death of cattle in the Military Dairy Farm, Chittagong. To explore the cause of death, clinical history, clinical signs were recorded. Finally, postmortem was done and samples were collected for laboratory diagnosis. The ruminal pH was 9.0 and the clinical history along with signs suggests possible non-protein nitrogenous compound poisoning. The laboratory diagnosis coincides with nitrate poisoning which focuses possible relationship between non-protein nitrogenous compound and nitrate poisoning. The study recommends maintaining proper cautions to use urea in concentrate feed.DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15403Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 65-68