Metabolism of Radioiodide by the Laying Hen and Lactating Goat

Metabolism of radio iodide was studied in laying hens, non-laying hens, cockerels and lactating goats using the isotope tracer technique. Isotope distribution showed that although the thyroid had a remarkable ability for trapping iodine, the quantities of iodine appearing in milk, eggs and urine was more than could be detected in the thyroid. Experiments on the effect of goitrogens on the...

Comparative Study of the Effect of Heat on Water Balance in Desert Sheep and Nubian Goats

Comparative investigations have been made in a climatic room on the effects of periodic heat load (20 40oC), 3 days dehydration, rehydration, and feed type (lucerne hay or grass hay) in adult Desert sheep and Nubian goats. The response to natural summer environment was also examined in groups of either species receiving grass hay and water ad libitum. Body temperature regulation, body weight...

Some Biochemical Aspects of Dehydration in Camels, Desert Goats and Desert Sheep

Most of the livestock of the Sudan are kept under pastoral conditions where they are confronted with problems of water shortage and pastures of low nutritive value for most part of the year. Animals often have to do for several days without water or with perhaps half their water requirement. The present work was conducted in camels, Desert goats and Desert sheep fed dry desert grass with a...

Seasonal Variation in Semen Characteristics of Sudanese Desert Sheep

The biophysical and biochemical characters of semen were studied in 20 mature Sudan Desert rams kept at natura1 conditions during the period February 1975 to April 1976. A transistorized rectal probe was employed for ram ejaculation. Environmental and body temperature measurements, sex drive, seasonal effect on semen characters, effect of frequency of semen collection on semen characters, semen...