منابع مشابه
Histomorphological Observations on the Parathyroid Glands in White Leghorn Birds
Parathyroid glands from laying hens were also xed in percent glutaraldehyde in phosphate buffer (0.1 M, 7.3 pH) for araldite embedding and used for electron microscopy. For routine histological observations, sections of 5 to 6 um thickness were cut and stained by, Mayer’s haemalum and eosin-phloxine, Masson’s trichrome, Crossman’s modi cation of Mallory’s triple stain, van Gieson’s method fo...
متن کاملEarly access to perches in caged White Leghorn pullets.
Osteoporosis, a progressive decrease in mineralized structural bone, causes 20 to 35% of all mortalities in caged White Leghorn hens. Previous research has focused on manipulating the egg laying environment to improve skeletal health, with little research on the pullet. The objective of the current study was to determine the effect of perch access on pullet health, bone mineralization, muscle d...
متن کاملDevelopmental stability in stocks of White Leghorn chickens.
The degree of asymmetry in bilateral morphological characters may reflect genetic and environmental stressors. Shank length and diameter, weight and length of the first primary wing feather, and distance between the junction of upper and lower mandibles and auditory canal (face length) were used to classify bilateral types and measure relative asymmetry (RA) in six genetic stocks. The stocks we...
متن کاملMetabolism of dehydroretinyl ester in White Leghorn chicks.
1. The metabolism of dehydroretinyl ester has been studied in vitamin-A-deficient white leghorn chicks. Dehydroretinyl ester was metabolized to 3-hydroxyretinol diester, 3-hydroxyanhydroretinol and rehydrovitamin A2 which were isolated from the intestines and livers of chicks. 2. The metabolism of 3-hydroxyretinol diester and 3-hydroxyanhydroretinol, which were immediate metabolites of dehydror...
متن کاملThe Rate of Thyroxine Secretion by the Thyroid Glands of White Leghorn Cockerels *
The physiology of the thyroid gland has become of increasing interest to us because of the observations made by Graham3 and the confirmation by others that the feeding of dried thyroid gland or the injection of thyroxine would dramatically increase the milk yield and fat secretion of many dairy cows. The effect of thyroxine upon the rate of growth and body type and conformation has been suggest...
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ژورنال
عنوان ژورنال: Journal of Heredity
سال: 1915
ISSN: 1465-7333,0022-1503
DOI: 10.1093/oxfordjournals.jhered.a109082