Journal of anatomy.
Publisher:
Cambridge Univ. Press [etc.].. Oxford : Blackwell Publishing (2002)
Frequency: Monthly,
Country: England
Language: English
Author(s):
Anatomical Society of Australia and New Zealand., Anatomical Society of Great Britain and Ireland., Anatomical Society of Southern Africa.
Start Year:1916 -
ISSN:
0021-8782 (Print)
1469-7580 (Electronic)
0021-8782 (Linking)
1469-7580 (Electronic)
0021-8782 (Linking)
Impact Factor
2.4
2022
| NLM ID: | 0137162 |
| (DNLM): | J12480000(s) |
| (OCoLC): | 02246129 |
| Coden: | JOANAY |
| LCCN: | 75-649510 |
| Classification: | W1 JO536D |
Development of horse embryos up to twenty two days after ovulation: observations on fresh specimens. Forty nine embryos, twenty unfertilized eggs and five other fresh eggs of 'doubtful' status have been recovered from 58 pony mares in 122 flushes up to 22 days after ovulation. The fresh egg or embryo recovery rate was 78% with surgical methods (or at slaughter) and 40-60% with non-surgical methods of recovery. The fertilization rate was about 70%. It has been confirmed that horse embryos normally enter the uterus as blastocysts 5-6 days after ovulation. Three features of early embryo morphology have become clearer upon comparison with unfertilized eggs of similar ages; early embryos are often...
Smooth muscle cells in the testicular capsule of the horse, pig and sheep. Smooth muscle cells are present in the tunica albuginea testis of the horse, pig and sheep. typical fusiform muscle cells constitute a distinct layer up to 0.3 micrometer thick in the horse; there are fewer muscle cells, mainly of the branched form, in the pig; whereas in the sheep the muscle component is least well developed, with some cells intermediate in form between smooth muscle cells and fibroblasts (myofibroblasts). Attention is drawn to the continuity of this capsular muscle with the smooth muscle associated with the vasculature of the spermatic cord in the horse. This association sug...
Total fibre numbers in cross sections of the semitendinosus in athletic and non-athletic horses and dogs. The numbers of fibres in the complete cross section of the semitendinosus were estimated in 58 equines and 59 canines of differing types. Animals selected for swiftness--thoroughbred horses and greyhounds--have a greater number of fibres in a cross section of their semitendinosus than other members of their species, whether as neonates or as adults. The numbers of fibres in the cross section increases during growth in both types of animal in each species.
Differences in the histochemical properties of skeletal muscles of different breeds of horses and dogs. Histochemical profiles of individual muscle fibres were established using myosin adenosine triphosphatase (myosin ATPase), succinate dehydrogenase (SDHase), and glycogen phosphorylase (GPase) reactions in three muscles (semitendinosus, diaphragm, and pectoralis transversus) of the horse and dog. The major histochemical difference between fibres lies in their myosin ATPase activity; fibres can be subdivided into those with a high and those with a low activity. In horse muscle, all fibres have a high activity of GPase. In the diaphragm and pectoralis transversus, all fibres have a high SDHase ac...
The mean fibre area of the semitendinosus, diaphragm and pectoralis transversus muscles in differing types of horse and dog. The mean fibre areas of samples from m. semitendinosus, m. diaphragma and m. pectoralis transversus of thoroughbred horses and greyhounds have been compared with those in similar samples from other members of their species. Athletes (greyhounds and thoroughbreds) have larger fibres in the semitendinosus and diaphragm than their fellows. However, the mean area of pectoralis transversus is similar in the two types of animal within each species. During growth the mean fibre areas increase to a greater extent in athletes than in non-athletes. Detraining adult greyhounds for a period of one year di...
Comparative histochemical studies on carbohydrate, lipid and RNA metabolism in the placenta and foetal membranes. Carbohydrate (particularly glycogen), lipid and RNA were among the substances earliest to be described in the placenta. The papers of Wislocki and his associates (1946a, b, c, 1948) have been supplemented by studies in several species (Hafez, 1964). Recently the distribution of glycogen has been re-examined using modern specific techniques (Christie, 1966a) and some correlation between the distribution of glyco-gen and certain specific alkaline phosphatases has been made (Christie, 1967a). Many enzymes relevant to the metabolism of glycogen, lipid and RNA can be demonstrated histochemically, a...