The goal of this experiment was to investigating of effects of different levels of nano chromium (N-Cr) in diet on egg quality and blood chromium content of japanese quail. Two hundred and forty laying japanese quail (45 day old) were randomly distributed to 20 experimental unit with 12 birds in cage pens of 40 × 80 cm. Experimental treatments include: 1) control national research council (NRC, 1994) based diet (with no N-Cr), 2) 200 ppb, 3) 400 ppb, 4) 600 ppb and 800 ppb of N-Cr. Egg weight, egg internal quality (Huagh unit) and blood chromium were Amiri Andi and Shahamat / International journal of Advanced Biological and Biomedical Research (2015) 3(4) 378-378 379 determined. Treatments influenced egg weight, yolk weight, albumen height, albumen weight, shell weight and thickness and Haugh unit (p≤ 0.05). But blood chromium content was not affected by levels of N-Cr (p≥ 0.05). In conclusion, it seems that N-Cr level of 800 ppb had further effects onjapanese quail egg quality.

No abstract

This research was conducted to know the effect of reinforcement and distance tranducer effective in detecting the depth of concrete cracks. The test specimen used is a 15x15x60 cm3 concrete beam with a concrete quality of 19 MPa. The test material is made of artificial cracks as depth as ± 2cm, ± 4cm, ± 6cm, and any fractured variation made 3 pieces of speciment, in addition to the test object was given a reinforcement of Ø8 mm which is placed horizontally in the center of the beam at a depth of 4 cm from the concrete surface. This testing using indirect method with variations of tranducer distance of 3cm, 6cm, 9cm, and 12cm. The study concluded that the accuracy of UPV testing results was influenced by reinforcement and distance tranducer. Test speciment with an artificial crack depth of ± 2cm and ± 4cm have a greater reading result with a relative error of 36.8% and 16.5%, while the test object with an artificial crack depth of ± 6cm has a smaller reading result with a relative error ± 3.4%. In addition, it obtained an effective tranducer distance of 12cm with an accuracy of 85.4%.

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The purpose of this research was to evaluate the effects of different levels of dietary protected butyric acid (PBA) on growth performance, blood metabolites, calcium and phosphorous of tibia in broilers. Two hundred and seventy day old Ross 308 male broilers divided in 9 treatments and 3 replicates (10 chicks per replicates), in a completely randomized design. Experimental treatments included: (1) control (without additives), (2) 0.1% Bacitracin (positive control), (3) 0.2% PBA in starter period, (4) 0.2% PBA in starter and grower periods, (5) 0.2% PBA in starter, grower and finisher periods, (6) 0.3% PBA in starter period, (7) 0.3% PBA in starter and grower periods, (8) 0.3% PBA in starter, grower and finisher periods and (9) 0.5, 0.4 and 0.3% PBA in starter, grower and finisher periods, respectively. Results indicated that the highest daily weight gain in starter period was related to birds fed 0.2% PBA, having significant difference with birds fed control, 0.3 and 0.5% PBA (p≤0.05). Use of PBA had no effect on body weight and daily weight gain in grower, finisher and total periods. PBA levels and Bacitracin did not effect on feed intake and feed conversion ratio of broilers. PBA did not have significant effect on blood metabolites (except blood plasma calcium) and calcium and phosphorous percentage of tibia at 42 days of age. Based on the taken results, it seems that use of 0.2% PBA as a replacing additive of antibiotic in broiler' diet is useful, especially in starter period.