Developmental study of digestive motor response to dietary pattern in young broilers.

1. Gastrointestinal (GI) morphometry and motility were measured in young broilers (3, 8 and 15 days old) when they were submitted to three dietary patterns (ad libitum food, acute 48-hr fast and cumulative semi-starvation). 2.

Altered responsiveness to ambiental stimuli in altered thyroidal states.

Hypothyroidal rats produced by low iodine diet or propylthiouracyl (PTU) were less active in the open field and received fewer food reinforcements than controls in a lever press situation at both 22 degrees C and 1 degree C. The hypothyroid rats also pressed less when heat was the reinforcer. On the other hand, hyperthyroidal rats produced by thyroid powder ingestion showed reduced emotionality in the open field.

Effect of thyroidal state on the gastrointestinal transit and emptying of young broilers.

1. In newly hatched broilers, propylthiouracil and thyroid powder added to the diet produced hypothyroidism and hyperthyroidism, respectively. After 4-5 days of treatment body and thyroid weight changed, but no differences in body temperature were found.

One-stage plastic reconstruction of a totally amputated cancerous penis using a unilateral myocutaneous gracilis flap.

A 36-year-old Saudi underwent a total penectomy for cancer involving the penile shaft with no corporeal invasion or distant metastases. One year postoperatively and in the absence of tumor recurrence or metastasis, a penile reconstruction using a right myocutaneous gracilis flap was performed. The result two years later was satisfactory, with preservation of deep penile sensation and successful weekly sexual intercourse.

[Effect of intracerebroventricular injection of histamine on the behavior of the white rat].

Previous references showed that the histamine injected peripherically produced a deterioration of the learning in experimental animals. The effects of 100 and 200 micrograms of histamine administered in the cerebral lateral ventricle, have been tested using an experimental paradigm which isolated attentional, motivational, and motor factor from the complex learned behavior. The obtained results showed to be similar to those produced by peripheric injection, and demonstrated a worsening in attentional, motivational, and motor parameters.

Ontogeny of the gastrointestinal motility in young broilers.

Gastrointestinal motility of young broilers (1, 8 and 15 days old) was measured by means of 14C-polyethylene glycol-4000. Two motor patterns can be observed: GI segments anterior to ileum increased their motility proportionally to the broiler age. GI segments below ileum decreased their motility when the broiler age is increased.

A simple method for pharmacological separation of motivation attention and learning.

A simple 2 X 2 factorial analysis provides separation of drive and learning aspects in a bar press escape learning. In addition, attentional measure is given considering the dispersion of results. This experimental design has been proved with Diazepam, a drug of rather well known effects, to assert the validity of the method.

Phenol red as indicator of the digestive tract motility in chickens.

Phenol red has been shown to produce no effects on intestinal motility of 24-hour-old chickens, allowing for quantitative measures of gastrointestinal transit and emptying. The results show that 1 hr after ingestion, the main digestive contents are stored in the crop with lesser amounts in the muscular part of the stomach, in the ileum, and in the rectum and caeca.