Zobrazeno 1 - 10
of 98
pro vyhledávání: '"C.F. Helmboldt"'
Autor:
L.A. Moore, J.E. Rousseau, A.P. Grifo, E. L. Jungherr, Martha W. Dicks, C.F. Helmboldt, H.D. Eaton, R. Teichman
Publikováno v:
Journal of Animal Science. 17:804-812
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8058fcc6c9f2610147089a62322b45d0
https://doi.org/10.2527/jas1958.173804x
https://doi.org/10.2527/jas1958.173804x
Autor:
H.D. Eaton, A.A. Spielman, R.E. Johnson, J.H. Kramer, L. D. Matterson, C.F. Helmboldt, R.J. Slate, E. L. Jungherr
Publikováno v:
Journal of Dairy Science. 32:870-876
Summary The effect of prepartum milking for 10 days prior to the calculated parturition date on the total hemoglobin, serum calcium and inorganic phosphorous, plasma carotene and vitamin A, and mammary and umbilical edema has been studied in 43 cows.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11e9629200c36ceca95e1fef568bffd8
https://doi.org/10.3168/jds.s0022-0302(49)92129-3
https://doi.org/10.3168/jds.s0022-0302(49)92129-3
Autor:
C.F. Helmboldt, H.D. Eaton, E. L. Jungherr, K.L. Dolge, R. Teichman, J.E. Rousseal, Martha W. Dicks
Publikováno v:
Journal of Dairy Science. 41:514-523
Summary Thirty-six male Holstein calves, 89±9 days of age and partially depleted of their vitamin A stores to an average of 8.9±4.0 γ per 100ml. of plasma, were fed one of three initial carotene intakes, 100, 300, or 900 γ per lb. live weight per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81f55c05070f58ea118cdb83d31e28e5
https://doi.org/10.3168/jds.s0022-0302(58)90956-1
https://doi.org/10.3168/jds.s0022-0302(58)90956-1
Publikováno v:
Journal of Dairy Science. 33:666-675
Summary Two groups of four dairy bull calves, averaging 189 days in age were fed a grain mixture containing less than 350 γ per lb. of carotene and beet pulp ad libitum for about 105 days. One control calf in each group received a daily supplement o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::892239091713c9ead778ac861fb96d02
https://doi.org/10.3168/jds.s0022-0302(50)91952-7
https://doi.org/10.3168/jds.s0022-0302(50)91952-7
Autor:
C.F. Helmboldt, A.P. Grifo, H.D. Eaton, D.G. Hazzard, J.E. Rousseau, B.A. Dehority, D.G. Gosslee
Publikováno v:
Journal of Dairy Science. 43:1809-1819
Summary Thirty-two Holstein male calves, approximately 63 days of age, were fed a vitamin A depletion ration at an intake to provide an anticipated seven-day increase in live weight of 10lb. until partially depleted of their vitamin A stores. When th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8af79b11077d27ab58995174a46f600
https://doi.org/10.3168/jds.s0022-0302(60)90418-5
https://doi.org/10.3168/jds.s0022-0302(60)90418-5
Autor:
D.G. Gosslee, B.A. Dehority, A.P. Grifo, E. L. Jungherr, C.F. Helmboldt, H.D. Eaton, J.E. Rousseau, D.G. Hazzard
Publikováno v:
Journal of Dairy Science. 43:630-644
Summary Sixteen male Holstein calves previously raised to 63 days of age on a limited whole milk, limited starter, and ad libitum chopped alfalfa hay ration were fed a vitamin A depletion ration until their plasma vitamin A averaged 8.3 ± 2.2 γ per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2ae787a5993527c889fcaf37a2d34fd
https://doi.org/10.3168/jds.s0022-0302(60)90214-9
https://doi.org/10.3168/jds.s0022-0302(60)90214-9
Autor:
G.S. Myers, D.G. Gosslee, C.F. Helmboldt, A.P. Grifo, H.D. Eaton, R. Teichman, E. L. Jungherr, Martha W. Dicks, B.A. Dehority
Publikováno v:
Journal of Dairy Science. 42:642-650
Summary Twelve Guernsey and 12 Holstein male calves whose average age was 83±10 days and which were partially depleted of their vitamin A stores to an average plasma vitamin A level of 7.8±2.5 γ per 100ml., were fed daily one of four levels, 30, 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb595245103d5c12d4de8d291c5be3ae
https://doi.org/10.3168/jds.s0022-0302(59)90630-7
https://doi.org/10.3168/jds.s0022-0302(59)90630-7
Publikováno v:
Journal of Dairy Science. 34:1073-1080
Summary The effect of intravenous and oral administration of carotene suspended in 9 per cent “Tween 80” was studied in 12 calves which had been depleted of their vitamin A stores. Growth rate and feed consumption were somewhat higher in those ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da913b3a121bac85f1b9764749143635
https://doi.org/10.3168/jds.s0022-0302(51)91828-0
https://doi.org/10.3168/jds.s0022-0302(51)91828-0
Autor:
R. Teichman, C.F. Helmboldt, H.D. Eaton, E.L. Bacon, Geoffrey Beall, E. L. Jungherr, J.E. Rousseau
Publikováno v:
Journal of Dairy Science. 39:1565-1573
Summary Forty-eight 63-day-old male Holstein calves, previously fed limited whole milk to 35 days of age and up to 3.0 lb. of starter and ad libitum chopped alfalfa hay, were fed an intake of a vitamin A depletion ration to give an anticipated 10 lb.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16221b566c79d49306bd19b56493ad3b
https://doi.org/10.3168/jds.s0022-0302(56)94890-1
https://doi.org/10.3168/jds.s0022-0302(56)94890-1
Publikováno v:
Journal of Dairy Science. 34:386-395
Summary The effect of a vitamin A-depletion ration on liveweight, carotene and vitamin A levels in the blood and liver, clinical appearance and microscopic anatomy was studied in 21 young calves beginning at 106 days of age. All calves were fed a vit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::157080ced5a3bed4961527f780633a5b
https://doi.org/10.3168/jds.s0022-0302(51)91726-2
https://doi.org/10.3168/jds.s0022-0302(51)91726-2