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1. The objective of this study was to examine whether the energy availabilities of two wheat samples, which differed in endosperm hardness, were changed when they were fed ground or as whole grains to chickens. Wheat samples of a variety Haven (hard endosperm) and a variety Riband (soft endosperm), both harvested in 1993 from the same growing site, were used in the experiment. 2. True metabolisable energy (TMEn) was measured in a flock of 24 adult cockerels and the mean of all the samples was 14.68 MJ/kg dry matter (DM). The TMEn of ground wheat was 0.306 MJ/kg DM greater (P < 0.05) than whole grain. There was no significant difference (P > 0.05) in TMEn between the Riband and Haven wheat samples and there were no (P > 0.05) variety x wheat form interactions. 3. The apparent metabolisable energy (AMEn) of the wheat samples was determined with 96 broiler chickens from 19 to 27 d of age. Different amounts of either whole or ground wheat samples were added to a basal diet. Extrapolation of the regression lines indicated AMEn concentrations (MJ/kg DM) of ground Haven 14.33, whole Haven 14.28 ground Riband 14.33 and whole Riband 14.51. There was no evidence (P > 0.05) that whole grain wheat had a different AMEn than ground wheat. 4. A feeding trial used 192 broiler chickens in 48 cages from 24 to 42 d of age. They were fed on a broiler grower diet either mixed with ground wheat before pelleting or with the pelleted grower diet loosely mixed with the whole wheat. There were no differences (P > 0.05) between the 2 wheat varieties or the diet form in growth rates or food conversion ratios. The growth rates of the broilers given a conventional grower and finisher dietary regimen tended (P > 0.05) to be slightly greater than the broilers given the wheat-diluted diets.

This study was conducted to compare the productive and reproductive performance of indigenous and crossbred cow likely Friesian, Sahiwal and Sindhi cross. A total of 180 dairy cows were selected randomly from four upazilas of Comilla district. It was observed that mean milk yield and lactation length of indigenous, Friesian cross, Sahiwal cross and Sindhi cross were 2.35±0.04, 7.36±0.11, 4.78±0.08 and 4.03±0.05 litre/day and 218.22±8.35, 284.69±1.64, 251.77±3.66 and 259.77±4.91 days respectively. It reveals that the Friesian cross is the best performer in relation to milk production and lactation length. About the reproductive performances it shows that indigenous cows need minimum (1.81±0.048) services per conception. Gestation length was shorter in case of Sahiwal cross (277.64±1.99 days) and it varies within Friesian and Sindhi cross in a short range (278.77±1.38 to 279.31±1.00 days). Calving interval was lower in Friesian crosses (413.77±53.87 days) than its counterparts. Age at puberty was shorter in Friesian cross (662.44±2.52 days). It interprets that Friesian cross was the best performer than other crossbred and indigenous cows in dairy potentialities. DOI: http://dx.doi.org/10.3329/bjas.v37i1.9866 BJAS 2008; 37(1): 39-43

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A total of nine Repeat Breeder (RB) cows consisting three cows in each of the three treatment groups were selected at farmer’s house of Nukali village of Sahjadpur Upazila under Sirajgonj district to know the feeding effect of concentrate feed on reproductive efficiency of RB cows. Concentrate feeds were given to the RB cows based on their body weight and milk production. Same management like housing, watering and quantity of green grasses and straw were ensured during the experimental period. Heat detection of cow was done by Draminski Estrous Detector (DRAMINSKI) to perform artificial insemination in standing heat period. Experimental diet samples were tested for chemical compositions in the laboratories. Data were statistically analyzed by the computer software program of SPSS. Days open or calving to conception interval were 13.00±3.51, 9.33±1.20 and 15.33±1.45 months for treatment group T1, T2 and T3, respectively. All experimental cows (100%) of treatment group one (T1) were become pregnant whereas no cows (0%) were conceived in treatment group (T3). Mean conception rate of all experimental cows was 0.56±0.18 with no significant difference. The results from the present study showed that dietary status of crossbred dairy cow can improve the reproductive efficiency like the conception rate RB cows. It’s would be concluded that diet containing optimum level of CP, Ca and P might be played a vital role for maximum conception rate of RB cows which clearly indicates the dietary intervention effect for improving the breeding efficiency of repeat breeder cows.Asian J. Med. Biol. Res. March 2018, 4(1): 137-140