Some skin characters in five breeds of European (Bos taurus) dairy cattle

1963 ◽  
Vol 14 (2) ◽  
pp. 294 ◽  
Author(s):  
T Nay ◽  
RH Hayman
Keyword(s):  
Dairy Cattle ◽  
Layer Thickness ◽  
Sweat Gland ◽  
Bos Taurus ◽  
Unit Area ◽  
Diameter Ratio ◽  
Sweat Glands ◽  
Skin Thickness ◽  
Layer Depth ◽  
Gland Volume

Observations were made of a number of skin characters in five breeds of European (Bos taurus L.) dairy cattle. Skin samples were taken from the cattle in January and July. There were differences between breeds in sweat gland volume and length! diameter ratio, in skin and papillary layer thickness, in the ratio skin thickness/papillary layer thickness, and in the degree of shrinkage in transverse sections cut from the papillary layer. There were no differences between breeds in density of follicle population (and hence sweat glands) per unit area of skin. Sweat gland volume, skin thickness, and papillary layer thickness were larger in winter than in summer, but there were no such differences for sweat gland length/ diameter ratio, the ratio skin thickness/papillary layer thickness, and follicle population density. The only significant overall correlations between characters were those between sweat gland volume and sweat gland length/diameter ratio, and sweat gland volume and papillary layer depth.

Sweat gland measurements in some tropical and temperate breeds of cattle in Nigeria

1974 ◽  
Vol 18 (3) ◽  
pp. 285-291 ◽  
Author(s):  
S. F. Amakiri
Keyword(s):  
Sweat Gland ◽  
Regional Differences ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Diameter Ratio ◽  
Sweat Glands ◽  
Zebu Cattle ◽  
Gland Volume ◽  
White Fulani ◽  
Friesian Cattle

SUMMARYMuturu (Bos taunts) cattle had a higher density of sweat glands in the skin (2208/cm2) than N'Dama (Bos taurus) (1776/cm2) and White Fulani (Bos indicus) (1584/cm2) cattle. Mean gland volume was 10·46,4·95 and 3·06 × 106 μ3 and length/diameter ratio (shape) of the glands was 3·97, 3·85 and 3·15 in N'Dama, Muturu and White Fulani cattle respectively.Results of similar studies with German Friesian cattle in the same environment gave a gland count of 1968/cm2, a mean gland volume of 14·1 × 106 μm3 and a length/diameter ratio of 5·73.Sweat gland measurements were generally higher for Friesian cattle than for zebu cattle and cattle of indigenous Bos taurus breeds.Regional differences in the parameters were generally significant. The relevance of the results to the adaptability of the various breeds of cattle to the tropical environment are discussed.

The thickness of cattle skin

1955 ◽  
Vol 6 (5) ◽  
pp. 776 ◽  
Author(s):  
DF Dowling
Keyword(s):  
Bos Taurus ◽  
Bos Indicus ◽  
Sweat Glands ◽  
Skin Thickness ◽  
Hot Environment ◽  
Early Maturing ◽  
The Mean ◽  
Critical Characteristics ◽  
Thick Skin ◽  
Active Sweat Glands

The mean total skin thicknesses (mm) for the breeds sampled were: Devon 8.15, Hereford 6.7, Zebu cross 6.43, Australian Illawarra Shorthorn 6.23, Friesian 6.0, Zebu 5.77, Aberdeen Angus 5.75, Shorthorn 5.69, and Jersey 5.46. The early maturing Shorthorn (Bos taurus L.) and the Zebu (Bos indicus L.) differed significantly in the depth of the papillary and reticular layers, and in the relative thickness of these skin layers. The mean thickness for the papillary layer; was 0.98 mm in the Zebu, 1.40 mm in the Zebu cross, and 1.70 mm in the Shorthorn. Thus the larger, more active sweat glands of the Zebu are more superficial. The corresponding reticular layer averaged 4.45 mm in the Zebu, 4.5 mm in the Zebu cross, and 4.08 mm in the Shorthorn. The thickness of the papillary layer relative to the total skin thickness was 18.3, 23.7, and 29.3 per cent., for the Zebu, Zebu cross, and Shorthorn respectively. The Zebu and the Jersey have relatively thin skins. Therefore a thick skin is not essential for adaptability to a hot environment. Inherent differences in the function of the follicles and the glands of the papillary layer may be critical characteristics for heat tolerance.

Sweating rate at different body regions in cattle and its correlation with some quantitative components of sweat gland volume for a given area of skin

1969 ◽  
Vol 20 (2) ◽  
pp. 395 ◽  
Author(s):  
YS Pan ◽  
SM Donegan ◽  
RH Hayman
Keyword(s):  
Population Density ◽  
Negative Correlation ◽  
Sweat Gland ◽  
Statistical Significance ◽  
Sweat Glands ◽  
Body Region ◽  
Sweating Rate ◽  
Positive Correlation ◽  
Gland Volume ◽  
Body Regions

Sweating rates at five body regions on four Jersey and four Sahiwal x Jersey crossbred heifers were measured in a hot room under three treatments differing in temperature and duration. The correlations between sweating rate and some quantitative components of sweat gland volume for a given area of skin were examined. Differences in sweating rate between body regions, interactions between breed and body region in sweating rate, and differences in sweating rate for the various treatments were all shown to be statistically significant. There was no significant interaction between body regions and treatment in sweating rate.Between body regions within an animal, there was a positive correlation between sweat gland population density and sweating rate and a negative correlation between mean sweat gland volume and sweating rate. This negative correlation was associated with the fact that regions with high sweat gland population density also tended to have smaller sweat glands and vice versa. Indications of a positive correlation between the total sweat gland volume per unit area and sweating rate were also found, though none of these approached statistical significance.

407. The number of sweat glands in the helix of the cow's ear and the milk yield

1950 ◽  
Vol 17 (1) ◽  
pp. 22-36 ◽  
Author(s):  
J. D. Findlay ◽  
A. Myfanwy Goodall ◽  
S. H. Yang
Keyword(s):  
Surface Area ◽  
Milk Yield ◽  
Sweat Gland ◽  
Unit Area ◽  
Sweat Glands ◽  
Young Calf

1. A study has been made of the distribution of the so-called sweat glands in the ears of Ayrshire cattle.2. The number of sweat glands per unit area of skin in the ear was found to vary greatly from one part of the ear to another and did not appear to be related to the milk yield. It is concluded that it is impossible to use the sweat-gland count in the ear as an indication of the milk-producing capacity of Ayrshire cattle.3. The number of sweat glands per unit area in the ear of the very young calf was found to be greater than in the fully grown cow, the number being roughly inversely proportional to the surface area of the ear.4. These findings for Ayrshire cattle are contrary to those published by a number of other workers for cattle of the Red German breed, who claim that any portion of the ear can be used to obtain a sweat-gland count which is closely correlated with milk yield.

scholarly journals Relationship Between Cyclic Changes in the Hair Follicle and Sweat Gland Size in Cattle

1966 ◽  
Vol 19 (4) ◽  
pp. 607 ◽  
Author(s):  
AV Schleger
Keyword(s):  
Hair Follicle ◽  
Sweat Gland ◽  
Hair Growth ◽  
Hair Follicles ◽  
Diameter Ratio ◽  
Sweat Glands ◽  
Growth Phases ◽  
Gland Size ◽  
The Mean ◽  
Cyclic Changes

The morphology of hair follicles has been studied in 23 Africander-Hereford crossbred yearlings. Eleven hair growth phases were recognized as a result of work on two animals. The piloapocrine units representing each phase have been illustrated by tracings. The mean length, diameter, length-diameter ratio, and area of sweat glands corresponding to each phase have been tabulated and illustrated.

Quantitative and morphological variation of sweat glands, skin thickness, and skin shrinkage over various body regions of Sahiwal Zebu and Jersey cattle

1963 ◽  
Vol 14 (3) ◽  
pp. 424 ◽  
Author(s):  
YS Pan
Keyword(s):  
Sweat Gland ◽  
Mean Value ◽  
The Body ◽  
Sweat Glands ◽  
Skin Thickness ◽  
Jersey Cattle ◽  
Body Regions ◽  
Sampling Position ◽  
The Mean ◽  
Almost All

By comparison with Jerseys the sweat glands of Sahiwals were 70% longer, 55% wider, and 315% greater in mean volume. Total sweat gland volume per unit area of skin was 340%, greater and skin thickness was 60% greater, but skin shrinkage was 30%, less. The density of sweat glands was 1130/cm2 for Jerseys and 1200/cm2 for Sahiwals. In almost all animals the characters varied significantly between the various body positions, and in most cases showed trends. Values for the generally adopted midside sampling position were usually within 10% of the mean value for all positions. Sweat gland shape varied over the body. Most of the shapes observed in the two species were present in one position or another within each animal.

Sweat glands in Zebu (Bos indicus L.) and European (B. taurus L.) cattle. II. Effects of season and exercise on sweat gland volume

1958 ◽  
Vol 9 (3) ◽  
pp. 385 ◽  
Author(s):  
RH Hayman ◽  
T Nay
Keyword(s):  
Seasonal Variation ◽  
Ambient Temperature ◽  
Rectal Temperature ◽  
Seasonal Changes ◽  
Sweat Gland ◽  
Bos Indicus ◽  
Sweat Glands ◽  
Crossbred Cattle ◽  
Jersey Cattle ◽  
Gland Volume

Seasonal variation in sweat gland volume is reported in two breeds of Zebu dairy cattle. Changes which occurred in the volume of sweat glands in Jersey and in Zebu x Jersey cattle, as the result of sweating induced by exercise, are described. The crossbred cattle, which had larger sweat glands than the Jerseys, sweated at a greater rate, and had a smaller rise in rectal temperature, which returned more rapidly to normal. It is suggested that there is a relationship between sweat gland volume and activity, and that the seasonal changes in volume observed in the two Zebu breeds are largely due to changes in ambient temperature.

Sweat glands in Zebu (Bos indicus L.) and European (B. taurus L.) cattle. I. Size of individual glands, the denseness of their population, and their depth below the skin surface

1956 ◽  
Vol 7 (5) ◽  
pp. 482 ◽  
Author(s):  
T Nay ◽  
RH Hayman
Keyword(s):  
Dairy Cattle ◽  
Skin Biopsy ◽  
Unit Area ◽  
Bos Indicus ◽  
Skin Surface ◽  
Sweat Glands ◽  
Zebu Cattle ◽  
Biopsy Specimens ◽  
European Cattle

Number of sweat glands per unit area of skin, their size, and their depth below the epidermis were compared in skin biopsy specimens obtained from the midside region of two Zebu and three European breeds of dairy cattle. Within Zebu breeds, comparisons were made between sweat glands from the midside and the dewlap. Zebus were found to have much larger and more numerous sweat glands than European animals. Within Zebus, sweat glands were slightly larger, and much more numerous, on the midside than on the dewlap. They are much closer to the skin surface in Zebu cattle than in European. In Zebus sweat glands are longer and of greater diameter than in European cattle. In appearance they are sac-like, with few convolutions, whereas sweat glands in European cattle are rarely sac-like, and quite convoluted.

scholarly journals The Sweat Glands and Hair Follicles of European Cattle

1972 ◽  
Vol 25 (3) ◽  
pp. 585 ◽  
Author(s):  
D Mcewan Jenkinson ◽  
T Nay
Keyword(s):  
Hair Follicle ◽  
Sweat Gland ◽  
Hair Follicles ◽  
Sweat Glands ◽  
Mean Values ◽  
The Mean ◽  
European Cattle

Measurements were made on the skins of 1363 cattle from different European breeds. The mean values of these measurements have been tabulated for each breed and the skin types present in each breed or group of breeds have been determined using sweat gland shape (LID) and hair follicle depth (FrY) as the principal bases of comparison.

scholarly journals RECURRENT MALIGNANT APOCRINE SWEAT GLAND CARCINOMA - A CASE REPORT

2021 ◽  
pp. 1-2
Author(s):  
AKHILA JANGA ◽  
MOHAMMED ZIAUDDIN ◽  
RAVI CHANDER PATLOLLA
Keyword(s):  
Local Excision ◽  
Wide Local Excision ◽  
Sweat Gland ◽  
Early Stage ◽  
Case Reports ◽  
Case Series ◽  
Biological Behavior ◽  
Sweat Glands ◽  
Second Phase ◽  
Apocrine Carcinoma

Apocrine carcinomas arise from normal or modified sweat glands. The slow-growing nature and rarity of sweat gland carcinomas complicate their diagnosis at the early stage. The incidence of PASGC is quite low at 0.0049–0.0173 cases/100,000 persons/year. A 21-year-old male patient was presented in February 2016 with small solitary mass in the right axilla with mild tenderness and pain. Underwent wide local excision and axillary dissection at our institution followed by adjuvant radio and chemotherapy. Later on, after 18 months developed local recurrence and was planned for re-surgery and a second phase of palliative radiotherapy. After a year, presented to the hospital with pin sized irregular swelling in the axilla. Sweat gland carcinomas which are rarely diagnosed create a pathological dilemma due to their unpredicted biological behavior. However, wide local excision with or without nodal dissection is the primary treatment till date. In this particular case even though patient had underwent axillary node dissection, patient had recurrence twice with no distant metastasis which is a key point to be noted. Thorough study of the available apocrine carcinoma case reports or case series, the better knowledge regarding the apocrine carcinoma can be obtained.

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