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Carla Fabro , Matteo Del Fabbro , Barbara Piani , Stefano Filacorda , Piero A. Susmel (2016). Apparent Metabolisability of Diets Containing Concentrate, Zostera Noltii or Taraxacum Officinalis in Anas Penelope. Animal Review, 3(1): 22-35. DOI: 10.18488/journal.ar/2016.3.1/22.214.171.124
Four metabolisability trials on captive Wigeons were conducted comparing a complete pelleted diet with others where Taraxacum officinalis and Zostera noltii were added. The daily dry matter (DM) intake of Wigeons varied from 54.4 to 65.5 g/day and the amount of nutrients received from the four diets was similar. The nitrogen (N) content of droppings statistically diminished when Wigeons were fed diets containing Zostera noltii. Correlation among cell wall components (CWC) of droppings and that of intakes was always highly significant and positive. The DM metabolisability of the four diets was 42-51 %. The crude protein (CP) metabolisability varied significantly from 21 % for the diet with Taraxacum to 39 % for that with the Zostera collected in June. The metabolizabilities of CWC also differed significantly among diets. The apparent metabolizabilities of ash with the Zostera diets were significantly higher when compared to those of two other diets.
This study is one of very few studies, which have investigated the metabolic responses of captive Wigeons (Anas penelope) to four different diets and compared the results of nutritional aspects to those of their wild counterparts.
Characteristic of Swamp Buffalo (Bubalus Bubalis) Pampangan at Ogan Komering Ilir, South Sumatera, Indonesia
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The aim of research to study the character and analyze the phenotypic diversity among variants swamp buffalo (Bubalus bubalis) Pampangan at Ogan Komering Ilir, South Sumatera. Quantitative data are determined by the circumference of the chest (Li Da), body length (Pa Ba), tail length (Pa Ek), the length of the head (Pa Ke), head width (Le Ke) and hip height (Ti Pi). Qualitative data is determined based on the character of each variant shown through the hair color, the shape and direction of growth of the horn. Characteristics that indicate of genetic relationship between the variant of swamp buffalo. Methods of observations carried out directly on the morphology and methods NTSYS Ver. 2.1 to the analysis of kinship and then presented in the form of a dendrogram. Results showed that there are four variants of buffalo Pampangan namely red buffalo, black buffalo, buffalo striped and Lampung buffalo. Morphology of buffalo such as body size, hair color, shape and direction of growth of the horns is different. Genetic relationship shown with value of correlation coefficient 0.57 was found in group A (OTU-1) and group B (OTU-2, OTU-3 and OTU-4), and value of correlation coefficient 0.612 found in group A (OTU-2 and OTU-4) and group B (OTU-3). The correlation coefficient of more than 0.57 indicates a kinship between the variance of the swamp buffalo Pampangan relatively close. It is suspected inbreeding between variants tends to be high. The analysis also showed that the closest genetic relationships found in OTU-2 (black buffalo) and OTU-4 (buffalo Lampung) with a correlation coefficient 0.85. This condition is believed that the OTU-2 and OTU-4 derived from the same lineage.
This study is one of very few studied which have investigated about the characteristics of local endemic animals that have the potential to be developed or preserved. Swamp buffalo in South Sumatra is the local animal with the potential to be cultivated and become a major food source.
Hydrostatic and Hydrodynamic Characteristics of Swimming Animals- an Inspiration for Hybrid Buoyant Aircraft
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In today’s world, the biological sciences are mostly considered separate from the existing modern knowledge of various other fields of sciences and engineering; however, there are many properties of nature and known facts of biological sciences that can be proved in the other domains of science and technology as well. Correlation of the geometric and buoyant properties of the swimming animals with the hybrid buoyant aerial vehicles is an example of this hypothesis. In the present work, some experiments related to the geometric parameters of a California sea lion were carried out. It was found that the fineness ratio of this animal is of the same order as the optimum value of that for the condition of minimum drag and power required for the buoyant aerial vehicle. The role of multiple fins on the elongated bodies of shark is also discussed in its application for yaw stability as well as to shroud the antennas that are used in the aircraft for various communication systems.
The paper's primary contribution is to show that the hydrodynamic and a few geometric parameters of a California Sea Lion resemble to that of the well-known facts of buoyant and hybrid buoyant aerial vehicles.