Zobrazeno 1 - 10
of 24
pro vyhledávání: '"R.A. Frobish"'
Publikováno v:
Journal of Dairy Science. 80:3050-3057
Total composite milk samples from 131 cows in one herd were analyzed. Eight beta-lactam residue screening tests were evaluated for performance using milk from individual cows and factors that affect the rate of false-positive outcomes were determined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edaf9d1def23c8c2b9542d20d2092623
https://doi.org/10.3168/jds.s0022-0302(97)76272-6
https://doi.org/10.3168/jds.s0022-0302(97)76272-6
Publikováno v:
Journal of veterinary pharmacology and therapeutics. 18(6)
Twenty-four healthy Holstein cows, 2.72 +/- 0.64 (mean +/- SD) years old, weighing 603.96 +/- 73.22 kg (mean +/- SD), and representing various levels of milk production, were used to determine the depletion of gentamicin (GT) in milk. The cows had no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02e30785043953351ff323c5b6e64378
https://pubmed.ncbi.nlm.nih.gov/8789700
https://pubmed.ncbi.nlm.nih.gov/8789700
Autor:
C. D. Van Houweling, R.A. Frobish
Publikováno v:
Journal of Dairy Science. 61:660-664
Summary We have attempted to provide an overview of the Food, Drug, and Cosmetic Act as it pertains to animal drugs and feed additives. The Act requires that each new animal drug application or food additive petition contain sufficient data to prove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e60207124501f623126e9a9d04e83e88
https://doi.org/10.3168/jds.s0022-0302(78)94425-9
https://doi.org/10.3168/jds.s0022-0302(78)94425-9
Autor:
C.L. Davis, R.A. Frobish
Publikováno v:
Journal of Dairy Science. 60:268-273
A new theory to explain the low-milk fat syndrome of cows fed high-grain, low-fiber diets is proposed. This theory involves alteration of propionate metabolism caused by increased rumen propionate production coupled with a deficiency of vitamin B 12
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd424941a0fb9a1c2760f02667b2b7a5
https://doi.org/10.3168/jds.s0022-0302(77)83863-0
https://doi.org/10.3168/jds.s0022-0302(77)83863-0
Publikováno v:
Journal of Dairy Science. 61:1789-1792
Two methods of feeding concentrates according to milk production were compared in a switchback experimental design. Twenty-four cows were assigned to two groups and the groups balanced according to age, milk production, fat-corrected milk production,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6132bd742a9d04fc94b124f40b7ab72c
https://doi.org/10.3168/jds.s0022-0302(78)83804-1
https://doi.org/10.3168/jds.s0022-0302(78)83804-1
Publikováno v:
Journal of Dairy Science. 56:1531-1539
Trial 1 . Fifty lactating Holstein and Brown Swiss cows were assigned to six groups in a 3×2 factorial design and fed one of six diets for 16 wk: (1) dry corn + hay, (2) dry corn + haylage, (3) ensiled high moisture corn + hay, (4) ensiled high mois
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f706556c39bb89a7388d79971c2eabc
https://doi.org/10.3168/jds.s0022-0302(73)85403-7
https://doi.org/10.3168/jds.s0022-0302(73)85403-7
Autor:
R.A. Frobish, C.L. Davis
Publikováno v:
Journal of Dairy Science. 60:204-209
According to the glucogenic theory increased glucose availability is responsible for the low-milk fat problem that occurs when cows are fed high-grain, low-fiber diets. Abomasal infusions of glucose or propionate were used to test this theory. In the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bb7f71435a43909208bb6dfd2242fef
https://doi.org/10.3168/jds.s0022-0302(77)83855-1
https://doi.org/10.3168/jds.s0022-0302(77)83855-1
Publikováno v:
Journal of Dairy Science. 54:928-930
The use of polyethylene glycol in determining rumen fluid volume of cows fed liberal amounts of roughage and grain (control) or high-grain, low-fiber diets was studied. The polyethylene glycol method accurately measured rumen fluid volume in cows fed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a559a42f68b97d481ae55a1c306a767
https://doi.org/10.3168/jds.s0022-0302(71)85947-7
https://doi.org/10.3168/jds.s0022-0302(71)85947-7
Publikováno v:
Journal of dairy science. 56(12)
Two Holstein cows were used to study the metabolism and excretion of phenobarbital in the lactating cow. Each cow received 6 g of sodium phenobarbital, intrarumenally, daily for 10 days. On the 10th day carbon 14 phenobarbital was mixed with the unla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e3ad9464e191ee99ebd5168fe11682e
https://pubmed.ncbi.nlm.nih.gov/4766733
https://pubmed.ncbi.nlm.nih.gov/4766733
Methane production from waste of beef cattle fed a high-grain finishing diet was investigated using continuously stirred 3-liter-working-volume anaerobic reactors at 60° C. At 55° C an effective culture was generated within 8 days in which waste wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26e04df926dcaf6add912189cf4f444b
https://doi.org/10.1016/b978-0-08-021791-8.50034-2
https://doi.org/10.1016/b978-0-08-021791-8.50034-2
