R J Collier
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Explore the profile of R J Collier including associated specialties, affiliations and a list of published articles.
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Articles
332
Citations
7917
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Recent Articles
1.
Marquez-Acevedo A, Hood W, Collier R, Skibiel A
J Dairy Sci
. 2023 May;
106(10):7295-7309.
PMID: 37210354
The dairy industry depends upon the cow's successful lactation for economic profitability. Heat stress compromises the economic sustainability of the dairy industry by reducing milk production and increasing the risk...
2.
Becker C, Collier R, Stone A
J Dairy Sci
. 2020 May;
103(8):6751-6770.
PMID: 32448584
Animal welfare can be negatively affected when dairy cattle experience heat stress. Managing heat stress has become more of a challenge than ever before, due to the increasing number of...
3.
McBride M, Burdick Sanchez N, Carroll J, Broadway P, Ortiz X, Collier J, et al.
J Dairy Sci
. 2020 Apr;
103(7):6612-6626.
PMID: 32307158
Adrenal responsiveness was tested in nonpregnant, lactating Holstein dairy cows fed diets supplemented with OmniGen-AF (OG; Phibro Animal Health Corp., Teaneck, NJ), an immune modulator, and in nonsupplemented control (CON)...
4.
Hall L, Villar F, Chapman J, McLean D, Long N, Xiao Y, et al.
J Dairy Sci
. 2018 Jun;
101(8):7095-7105.
PMID: 29885898
Holstein cows (n = 30) were balanced by days in milk, milk production, and parity (91 ± 5.9 d in milk, 36.2 ± 2.5 kg/d, and 3.1 ± 1.4, respectively)...
5.
Hamzaoui S, Burger C, Collier J, Collier R
J Dairy Sci
. 2018 Feb;
101(5):4638-4642.
PMID: 29477513
Apocrine sweat glands in bovine skin are involved in thermoregulation. Human, horse, and sheep sweat gland epithelial cells have been isolated and grown in vitro. The present study was conducted...
6.
Collier R, Bauman D
J Anim Sci
. 2018 Jan;
95(12):5639-5652.
PMID: 29293741
The latter half of the 20th century and the early portion of the 21st century will be recognized as the "Golden Age" of lactation biology. This period corresponded with the...
7.
Collier R, Renquist B, Xiao Y
J Dairy Sci
. 2017 Nov;
100(12):10367-10380.
PMID: 29153170
Stress is an external event or condition that places a strain on a biological system. The animal response to a stress involves the expenditure of energy to remove or reduce...
8.
Baumgard L, Collier R, Bauman D
J Dairy Sci
. 2017 Nov;
100(12):10353-10366.
PMID: 29153169
We have seen remarkable advances in animal productivity in the last 75 years, with annual milk yield per cow increasing over 4-fold and no evidence of nearing a plateau. Because...
9.
Godfrey R, Preston W, Joseph S, LaPlace L, Hillman P, Gebremedhin K, et al.
J Anim Sci
. 2017 Jul;
95(7):2936-2942.
PMID: 28727097
The objective of this study was to evaluate the effect of pregnancy, breed, and hair coat on body temperature and sweating rate (SR) of hair sheep. St. Croix White (STX;...
10.
Silva P, Weber W, Crooker B, Collier R, Thatcher W, Chebel R
J Dairy Sci
. 2017 Feb;
100(5):3983-3999.
PMID: 28237587
Objectives of this experiment were to evaluate the effects of recombinant bovine somatotropin (rbST) treatment of periparturient dairy cows on hepatic mRNA expression for genes related to the somatotropic axis,...