Study on the Apparent Digestibility of Diet on Formosan Pangolin
Date Issued
2004
Date
2004
Author(s)
Chang, Chi-Yen
DOI
zh-TW
Abstract
To understand the digestive characteristics of the Formosan pangolins for optimum feeding practices, three females and seven males were anatomized for the experiment. The length from the muzzle to the vent (body length), tongue length and intestinal canal length were measured. The weight of the body, stomach, and sub maxillary salivary glands were also taken. Ratios of tongue length to body length, intestinal canal length to body length, stomach weight to body weight, and salivary glands weight to body weight were calculated.
Three experimental tasks were performed to accomplish the said objective. (1) Measure the retention time of diet in the animal by adding Cr2O3 into the diets. (2) Study the apparent digestibility of dry matter (DM), crude fat (CF), crude protein (CP), ash and gross energy(GE). (3) Understand the effect of chitin and chitosan on apparent digestibility. There were two male and two female pangolins kept in individual cages for seven days before the experiment. Every afternoon at five o’clock, 40 g diet / kg body weight was given and water supplied ad lib. In Exp. Ι, feed intake was recorded daily and body weight measured weekly to realize the relationship between feed intake and variation of body weight. In Exp. ΙΙ, 1g of Cr2O3 per 100g diet was administered and feces was collected at the 7th day to examine their color and calculate the retention time of diet. Digestive trial was carried out for 30 days, feed intake recorded, and feces collected to calculate apparent digestibility of basal diet. In Exp. ΙΙI, six pangolins were used in Latin square design experiments to test for 3 different treatment diets: diet 1 (basal diet) ; diet 2 (basal diet with chitin 5 g/100g diet) ; diet 3 (basal diet with chitosan 5 g/100g diet).
The result showed that (1) The ratio of intestinal canal length to body length was close to 9 which is much similar to that of the omnivorous animal than carnivorous animal. (2) The daily feed intake of dry matter was 39~71 grams and daily energy intake was 282.54∼353.18 Kcal. (3) The retention time of basal diet for pangolins was around 24-48 hours and was 60 hours latest. (4) The apparent digestibility of DM, CF, CP, ash and GE were 88.8 ± 1.0, 95.9 ± 0.9, 86.4 ± 1.6, 68.0 ± 5.6 and 91.0 ± 1.1 respectively. (5) The diet with chitosan was not acceptable for pangolin. (6) Adding chitin into diet could decrease apparent digestibility of DM, CP, ash and GE (p＜.05), therefore it could be a good way to control weight of pangolin. Furthermore, chitin seemed to improve the property of feces.
Subjects
表面消化率
飼糧
apparent digestibility
diet
Formosan pangolin
Type
thesis
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