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Abstract. A first attempt to rear Cichlasoma synspillum Hubbs in floating cages was carried out. Fish with a mean individual weight of 18.5g were stocked at 25,50 and 100 per m3 . The fish were fed a 40% protein balanced diet over a 112-day test-period. Growth differences of the fish were statistically significant (P<0.05), with the best results given by the lowest density. FCR ranged from 3.14 to 3.44, with the poorest efficiency found in treatment 3 (100/m3 ). 相似文献
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Abstract. An experimental growth trial in floating cages at three different stocking densities was carried out. 15–19-cm mean total length, 18.5-g mean individual weight fish were stocked at 25, 50 and 1OO per m3 . A 40% protein balanced diet was used as feed. The results of the study showed no statistically significant differences in growth among the three treatments. Food conversion ratios ranged from 3.10 to 3.34, and spiecific growth rates were between 1.40 and 1.48%/day. 相似文献
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GIOVANNA BERTOLINI CRISTIANO STEFANELLO MARCO CALDIN 《Veterinary radiology & ultrasound》2009,50(1):80-82
In humans, pulmonary interstitial emphysema is most frequently seen in ventilated preterm newborns with severe lung disease; it is less frequently reported in adults. We report on a mature dog with pneumopathy that underwent computed tomography (CT) imaging to further characterize the lung disease. A bronchiolar pattern and lobar opacification were seen on the CT images. Moreover, gas was detected along the course of the pulmonary vessels, presumably in the interstitium, as seen in pulmonary interstitial emphysema in humans. Sever lung disease and/or hyperventilation during anesthesia could be a possible explanation of pulmonary interstitial emphysema in this dog. 相似文献
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