The Relationship of Surface Area to Heat Tolerance in Jerseys and Sindhi-Jersey (F1) Crossbred Cows

1953 ◽  
Vol 12 (4) ◽  
pp. 747-756 ◽  
Author(s):  
R. E. McDowell ◽  
Douglas H. K. Lee ◽  
M. H. Fohrman
Keyword(s):  
Surface Area ◽  
Heat Tolerance ◽  
Crossbred Cows ◽  
Relationship Of ◽  
The Relationship

scholarly journals The relationship of left ventricular function to infarct surface area and volume

2009 ◽  
Vol 11 (S1) ◽  
Author(s):  
Al-Hakim Ramsey ◽  
Michael C Fishbein ◽  
Thomas O'Donnell ◽  
James Sayre ◽  
Kalyanam Shivkumar ◽  
...  
Keyword(s):  
Left Ventricular Function ◽  
Ventricular Function ◽  
Surface Area ◽  
Left Ventricular ◽  
Relationship Of ◽  
The Relationship ◽  
Area And Volume

scholarly journals Relationship of udder and teat conformation with intra-mammary infection in crossbred cows under hot-humid climate

2019 ◽  
Author(s):  
Champak Bhakat
Keyword(s):  
Milk Production ◽  
Monthly Interval ◽  
Visual Examination ◽  
Humid Climate ◽  
Crossbred Cows ◽  
Milk Samples ◽  
The Mean ◽  
Hot Humid Climate ◽  
Relationship Of ◽  
The Relationship

Aim: The present study was aimed to investigate the relationship of udder shape, teat-end shape, teat length, and teatdiameter with intra-mammary infection in Jersey crossbred cows under hot-humid climate.Materials and Methods: A total of 24 lactating Jersey crossbred cows were evaluated for udder shape (pendulous/regular)and teat-end shape (flat/inverted/pointed) by visual examination, while teat length and teat diameter were measured usingvernier caliper. Monthly milk sampling was done for 4 months of duration. Few quarters were found as blind or nonfunctionaland so, a total of 366 quarter wise milk samples were collected at the monthly interval and subjected to somaticcell count (SCC) microscopically. The data on SCC were transformed into log scale and analyzed.Results: There was a significant (p<0.01) effect of udder shape and teat-end shape on SCC level. The mean SCC levelfor pendulous udder was significantly (p<0.05) higher as compared to the regular shaped udder. Similarly, significantly(p<0.05) a higher level of mean SCC was found in flat teat-end shape. A significant (p<0.01) correlation was found betweenSCC and teat length as well as teat diameter.Conclusion: In conclusion, pendulous udder, flat and inverted teat-end, very long and thick teat were more susceptible tointra-mammary infection in Jersey crossbred cows and these traits must be considered accordingly while selecting dairyanimals for future milk production.

The Relationship of the External Surface Area of Birds to Skin Surface Area and Body Mass

1978 ◽  
Vol 76 (1) ◽  
pp. 185-189 ◽  
Author(s):  
GLENN E. WALSBERG
Keyword(s):  
Heat Transfer ◽  
Surface Area ◽  
Body Mass ◽  
External Surface ◽  
Bird Species ◽  
Skin Surface ◽  
External Surface Area ◽  
Relationship Of ◽  
The Relationship

Data from 12 bird species reveal that skin surface area averages 23 % larger than the external surface area of the plumage. Use of skin surface area instead of the area of the external plumage surface may produce large errors in heat-transfer analyses.

scholarly journals Relationship of Scalp Color to Production Performance and Heat Tolerance of Holstein Cows

2021 ◽  
Vol 13 (1) ◽  
pp. 93-99
Author(s):  
Bashar Adham Ahmad ◽  
Wasan Jassim Al-Khazraji
Keyword(s):  
Milk Production ◽  
Heat Tolerance ◽  
Production Performance ◽  
Holstein Cows ◽  
Milk Components ◽  
Relationship Of ◽  
The Relationship

This study was conducted at Taj Al-Nahrain cows station in Al-Qadisiyah Governorate / Al-Diwaniyah district, which is 180 km from the center of Baghdad, and the duration of the experiment was extended from 1/9/2018 to 1/9/2019, the number of cows used in the experiment is 64 of the Holstein cows imported from Germany. To study the relationship between Scalp color and production performance and heat tolerance coefficient, 64 Holstein cows used in this experiment, cows divided into three groups according to the color of scalp cows as the ratio of spotting as 90% black, 50% black-50% white and 90% white, The result of this study showed. The color of the scalp had a significant effect on the milk components, as the color of the scalp exceeded 50% black 50% white over the color of the scalp 90% black, and the color of the scalp 90% white, Was non-significant in other milk components, milk production, and heat tolerance coefficient.

scholarly journals Oxygen Consumption and Cell Size. A Comparison of the Rate of Oxygen Consumption of Diploid and Triploid Prepupae of Drosophila Melanogaster Meigen

1953 ◽  
Vol 30 (4) ◽  
pp. 475-491 ◽  
Author(s):  
C. ELLENBY
Keyword(s):  
Body Weight ◽  
Drosophila Melanogaster ◽  
Oxygen Consumption ◽  
Body Size ◽  
Surface Area ◽  
Cell Size ◽  
Rate Of Oxygen Consumption ◽  
The Mean ◽  
Relationship Of ◽  
The Relationship

1. The oxygen consumption and surface area of individual diploid and triploid prepupae of Drosophila melanogaster have been measured, the cells of triploid animals being larger. 2. The mean weights for the types examined are different but their ranges overlap almost completely. By covariance analysis it is shown that, after adjustment for difference in body size, there are no differences in the rates of oxygen consumption. It is concluded that, for these animals, cell size has no influence on the rate of oxygen consumption. 3. The relationships between body weight, surface area, and oxygen consumption have been further investigated. It is shown that, despite the greater inaccuracy of the method by which surface area is determined, oxygen consumption can be predicted more accurately from surface area than from body weight. 4. The results are discussed in relation to an earlier investigation of the oxygen consumption of other genotypes (Ellenby, 1945 a, b). Possible technical causes of certain differences between the two series of results in the relationship of oxygen consumption and body weight are explored; it is concluded, however, that they are almost certainly due to differences, not necessarily genetical, between the animals used in the two series.

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