Characterization of Black Bengal bucks and does was performed in this study. A total of 50 goats of different aged were studied. The experiment was performed in Black Bengal bucks and does at 1 st day and at 3, 6, 9 and 12 months of age for measuring different parameters such as body length, heart girth, wither height, hip height, fore and hind leg length, head length and width, head length and width, ear length and ear breath, scrotal length and scrotal circumference. In a single parameter as body weight of Black Bengal bucks and does at 1 st day and at 3, 6, 9 and 12 months of age were found to be 1.08±0.06, 5.22±0. 33, 8.95±0.34, 12.05±0.47 and 14.20±0.20; and 1.01±0.23, 3.93±0.19, 7.41±0.27, 9.53±0.38 and 12.40±0.41 kg respectively. Whereas all the finding where gradually increased for all parameters according to their specific age periods. Body weight has a strong positive relationship with heart girth, body length, height at wither, scrotal length and scrotal circumference in Black Bengal goat. All the parameters studied found comparatively higher in bucks than does.

The experiment was conducted on “Lohman Meat” broiler chicks to evaluate the effect of exogenous multivitamin and enzyme supplementation on body weight gain, haematological parameters (TEC, Hb content, PCV and ESR) and serum transaminases (AST and ALT). A total of 20, twenty days old broilers were randomly divided into four equal groups (5×4). Group A was considered as control, fed only with commercial ration, group B was treated at a dose rate of 0.5 ml multivitamins per 1 litre of drinking water, group C was treated at a dose rate of 1 ml enzyme per litre of drinking water and group D was treated with multivitamin @ 0.5 ml/L and Enzyme @ 1ml/ L in water from 1 to 21 days of experiment. It was observed that multivitamin and enzyme supplementation significantly (p<0.01) increased body weight. TEC, PCV and Hb content increased significantly (p<0.01) in the treated groups as compared to that of control group. ESR, AST and ALT values decreased significantly (p<0.01) in the treated groups. Therefore, it may be concluded that multivitamin and enzyme may be used with better performances in terms of increase of body weight and blood profiles. Keywords: Multivitamins and enzymes; Effects; Broiler DOI: 10.3329/jbau.v8i1.6396J. Bangladesh Agril. Univ. 8(1): 39-44, 2010

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To determine the in vitro effects of various environmental and nutritional factors on the hatching of eggs, development and survival of larvae of Oesophagostomum columbianum, eggs were cultivated at different temperature gradients, humidity and P H in phosphate buffer saline (PBS), tap water (TW) and normal saline (NS) using serum and liver extract at different concentrations during the period from November 2008 to October 2009. In this study, no development of eggs was seen at 4 0 C temperature within 15 days. The eggs also did not hatch while transferred to room temperature within 15 days. Hatching of eggs were maximum (38.7%) at 26 0 C on day 5. While hatching of eggs of O. columbianum did not occur at p H 2. Maximum number of hatching of eggs was seen on day 6 (40.00%) at p H 6.5 and lowest in (3.65%) at p H 11.5. Maximum hatching of eggs (51.21%) were recorded in the relative humidity of ≥80%-90% on day 5. Light had no significant effect on the development and hatching of eggs of O. columbianum. Maximum eggs hatched in PBS containing 15% serum and 10% liver extract (42.16%) but for PBS containing 10% liver extract also produced about to same hatching rate (42.15%). The present study suggests that PBS containing 15% serum and 10% liver extract may be used as suitable media for the incubation of eggs of O. columbianum due to continuous increasing of hatching rate of eggs according to the advancement of days. Further more, for in vitro culture better results may be obtained if eggs are incubated at 26 0 C, p H 6.5 and relative humidity ≥80%-90%.