Identification of the possible origin of the body target that differentiates play fighting from serious fighting in syrian golden hamsters (Mesocricetus auratus)

The effects of bran and starchy endosperm fractions of oat and rye on faecal weight and on biliary and faecal bile acids were studied in Syrian golden hamsters (Mesocricetus auratus). The animals fed on diets supplemented with steam-flaked oat bran, oat bran or rye bran had higher wet and dry weights of faeces compared with the animals fed on the fibre-free or low-fibre endosperm diets. A higher mean percentage of biliary cholic acid and a lower mean percentage of chenodeoxycholie and lithocholic (LCA) acids was observed in the bran-supplemented dietary groups. Animals fed on the bran-supplemented diets had increased daily faecal excretion of both total saponifiable and total free bile acids compared with the animals fed on fibre-free or endosperm-supplemented diets. The mean percentage of total saponifiable bile acids in the faeces was higher, and that of free bile acids lower in the animals fed on bran-supplemented diets. A significantly lower concentration of faecal free LCA was observed in the animals fed on the rye-bran diet. Both bran and endosperm diets reduced the faecal LCA: deoxycholic acid compared with the fibre-free diet, but the bran diets had a more pronounced effect than endosperm diets.

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Play fighting versus serious fighting in golden hamsters (Mesocricetus auratus)

Bulletin of the Psychonomic Society ◽

10.3758/bf03337336 ◽

1993 ◽

Vol 31 (6) ◽

pp. 503-506 ◽

Cited By ~ 3

Author(s):

Damian I. Onyekwere ◽

J. Martín Ramírez

Keyword(s):

Mesocricetus Auratus ◽

Play Fighting ◽

Golden Hamsters

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Effects of removal of the forestomach and caecum on the utilization of dietary urea in golden hamsters (Mesocricetus auratus) given two different diets

British Journal Of Nutrition ◽

10.1079/bjn19810059 ◽

1981 ◽

Vol 46 (3) ◽

pp. 503-512 ◽

Cited By ~ 8

Author(s):

Ei Sakaguchi ◽

Junichi Itoh ◽

Hisashi Shinohara ◽

Tatsuro Matsumoto

Keyword(s):

Mesocricetus Auratus ◽

The Body ◽

Italian Ryegrass ◽

Surgical Removal ◽

Food Utilization ◽

Body Protein ◽

High Fibre Diet ◽

Golden Hamsters ◽

Fibre Diet ◽

High Fibre

1. Surgical removal of the forestomach, the caecum or both the forestomach and the caecum, was performed on growing male golden hamsters (Mesocricetus auratus) given a low-or high-fibre diet.2. In Expt J, 18 d after surgery, the hamsters which were given a concentrate before surgery were given an experimental low-fibre diet containing urea or [15N]urea (10 g/kg diet) for 9 d. In Expt 2, 5 d after surgery, the hamsters which were given a forage diet before surgery were adapted to an experimental high-fibre diet containing urea (10 g/kg) and dried Italian ryegrass (Lolium italicum) powder (400 g/kg diet) for 5 d, and 10 d after surgery, given a diet containing [l5N]urea (10 g/kg diet) for 9 d.3. In both experiments, removal of the caecum resulted in a significant lowering of both weight-gain and the digestibility of the dry matter, and removal of the forestomach resulted in a significant decrease of both accumulation of 15N in the body protein and proportion of l5N retained in the body protein as a proportion of the administered dosage.4. The effect of removal of the caecum on the utilization of [15N]urea was not apparent in Expt 1, but the utilization of [15N]urea was significantly lowered by removal of the caecum in Expt 2.5. These results suggest that the caecum may play a more important role in food utilization than the forestomach. However, the forestomach of the golden hamster plays a significant role in the utilization of dietary urea. It is presumed that the role of the caecum in the utilization of urea may vary under different dietary conditions.

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