Zobrazeno 1 - 10
of 34
pro vyhledávání: '"G.D. Marx"'
Publikováno v:
The Professional Animal Scientist. 29:289-297
A lactation study was conducted to evaluate the effect of increasing the proportion of inorganic versus organic trace minerals (polysaccharides and amino-acid chelates) on reproductive performance and milk production of multiparous and primiparous Ho
Publikováno v:
Journal of Dairy Science. 82:795-801
Holstein cows were compared for direct and correlated responses to selection for large versus small body size. The divergent selection lines differed for body weight, body dimensions, and birth weight of calves but did not differ for production or ca
Publikováno v:
Animal Feed Science and Technology. 72:111-120
Waxy and dent corn starch differences were compared in diets of early lactating dairy cows. Thirty multiparous Holsteins averaging 568±76 kg body weight (BW) and 50±24 d in lactation were randomly assigned at two locations to three treatments to ev
Publikováno v:
Journal of Dairy Science. 77:2621-2629
At three locations, 120 calves were fed a high fat milk replacer at 10% of birth weight from d 5 through 13. On d 14, calves were assigned randomly within sex and date of birth to a 2 × 2 factorial arrangement of treatments. Treatments were (on a DM
Autor:
C. A. Jaynes, J.D. Quigley, Hugh Chester-Jones, M. L. Miller, D. M. Allen, E. Schanus, G.D. Marx
Publikováno v:
Journal of dairy science. 83(4)
An alternative protein ingredient based on spray-dried, hydrolyzed red blood cells was evaluated in calf milk replacers. Two experiments were conduced to determine the value of the ingredient on intake, growth, and feed efficiency in dairy calves. In
Publikováno v:
Stočarstvo : Časopis za unapređenje stočarstva
Volume 53
Issue 1
Volume 53
Issue 1
Publikováno v:
Journal of dairy science. 80(11)
Experiments were conducted to examine the effects of the source and amount of dietary protein on yield and composition of milk from Holstein dairy cows. Study 1 used 36 multiparous cows at 12 5± 59 d in milk in a replicated 2 x 2 Latin square design
Publikováno v:
Journal of dairy science. 73(9)
Primiparous Holsteins from designed studies were evaluated for edema, dystocia, and retained placenta. Genetic studies were 1) selection for large body size versus small body size, and 2) milk yield selection versus control (no selection). The large
Publikováno v:
Journal of Dairy Science. 66:528-534
Twenty Holstein heifers were fed four rations containing 0, 10, 20, and 30% whole sunflower seed as a source of dietary fat. All rations consisted of alfalfa hay, sunflower hulls, and grain mixtures and were isonitrogenous at 12% crude protein and is
Autor:
G.D. Marx, J.D. Donker
Publikováno v:
Journal of Dairy Science. 63:931-935
Sixty-two Holstein cows were used to evaluate ingestion of sodium bicarbonate. Half of the cows were fed a control diet and the other half a diet in which the concentrate contained 1.5% sodium bicarbonate. Concentrate was fed at 1 kg per 2 kg milk ab