Zobrazeno 1 - 10
of 32
pro vyhledávání: '"J.B. Fitch"'
Publikováno v:
Journal of Dairy Science. 28:329-337
Summary 1. The effects of thyroidectomy upon the general appearance and behavior of immature and mature bovine are analogous to those reported for other mammals. 2. Partial thyroidectomy failed to produce any symptoms of hypothyroidism in immature or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a8aebdfd2f73fdb3ff5b7370f501ad4
https://doi.org/10.3168/jds.s0022-0302(45)95182-4
https://doi.org/10.3168/jds.s0022-0302(45)95182-4
Publikováno v:
Journal of Dairy Science. 26:447-455
Summary Three facts have been given which support the belief that persistency of lactation in dairy cattle is an inherited characteristic: 1) the variation in persistency values is much greater among non-related animals than among closely related one
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0656c02dfe3b94e3de770217eb3f110
https://doi.org/10.3168/jds.s0022-0302(43)92740-7
https://doi.org/10.3168/jds.s0022-0302(43)92740-7
Publikováno v:
Journal of Dairy Science. 7:222-233
Summary 1.The average weight of Jersey calves in the herd studied was 57 pounds, of Guernsey calves 64 pounds, of Ayrshire calves 72 pounds, and of Holstein calves 91 pounds. 2.The Jersey calves represented 6.3 per cent of the weight of their dams, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfb7585056d97124cecc2616677ad394
https://doi.org/10.3168/jds.s0022-0302(24)94016-1
https://doi.org/10.3168/jds.s0022-0302(24)94016-1
Autor:
E.L. Anthony, J.B. Fitch
Publikováno v:
Journal of Dairy Science. 14:394-397
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1379f2c5b3b6278259bdcfaf9d1e71a0
https://doi.org/10.3168/jds.s0022-0302(31)93482-6
https://doi.org/10.3168/jds.s0022-0302(31)93482-6
Autor:
T.W. Gullickson, J.B. Fitch
Publikováno v:
Journal of Dairy Science. 27:331-335
Summary Comparisons were made using a total of 72 calves, including 19 Guernseys, 28 Holsteins and 25 Jerseys, to determine the effect, if any, of adding cod liver oil, as a vitamin A supplement to the rations commonly fed to calves during the period
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b17af241e5d02ec7505e38c5a4ada3c6
https://doi.org/10.3168/jds.s0022-0302(44)92606-8
https://doi.org/10.3168/jds.s0022-0302(44)92606-8
Publikováno v:
Journal of Dairy Science. 25:117-128
Summary Feeding tests were conducted to compare the feeding value of the following fats and oils for calves: butterfat, lard, tallow, coconut oil, peanut oil, corn oil, cottonseed oil and soybean oil. The effect of a very fat-poor diet on calves was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::137bfb9f7c85eba0a2035719aea7c3f6
https://doi.org/10.3168/jds.s0022-0302(42)95274-3
https://doi.org/10.3168/jds.s0022-0302(42)95274-3
Autor:
J.B. Fitch, Lynn Copeland
Publikováno v:
Journal of Dairy Science. 7:169-173
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71a2e7a6a798a57a8a6afde0904bd6ae
https://doi.org/10.3168/jds.s0022-0302(24)94008-2
https://doi.org/10.3168/jds.s0022-0302(24)94008-2
Publikováno v:
Journal of Dairy Science. 31:557-560
Summary and Conclusions A feeding trial was conducted to determine the effect of supplementing the rations of lactating dairy cows with 1 g. of mixed tocopherols daily per cow on the amount and fat content of the milk produced. Seventeen cows were us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::299f21b144fcce019da6280cadc27c24
https://doi.org/10.3168/jds.s0022-0302(48)92242-5
https://doi.org/10.3168/jds.s0022-0302(48)92242-5
Autor:
R.H. Lush, J.B. Fitch
Publikováno v:
Journal of Dairy Science. 14:116-124
Summary Any feeding standard should be looked upon only as a guide. The Morrison standard for growing dairy animals, however, can be readily used in the majority of experimental trials and it is hoped more quickly interpreted by the use of table 2 pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ff5dfda3d95a8f22265af67cd49627e
https://doi.org/10.3168/jds.s0022-0302(31)93457-7
https://doi.org/10.3168/jds.s0022-0302(31)93457-7
Publikováno v:
Journal of Dairy Science. 27:441-448
1.Thyroidectomy performed on cows preceding gestation, during pregnancy, and during lactation caused a complete cessation of lactation in about 180 days. 2.Total milk and fat yield were reduced about 75 per cent. 3.Incomplete removal of thyroid gland
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::386122ca83440e2a1938343786736662
https://doi.org/10.3168/jds.s0022-0302(44)92620-2
https://doi.org/10.3168/jds.s0022-0302(44)92620-2