Zobrazeno 1 - 10
of 41
pro vyhledávání: '"D L, Kreider"'
Publikováno v:
Biological Journal of the Linnean Society. 106:390-404
Reproductive allocation strategies have been historically described as lying on a continuum between capital and income breeding. Capital breeders have been defined as species that allocate stored reserves to reproduction, whereas income breeders have
Autor:
Wayne K. Coblentz, Elizabeth B. Kegley, Charles F. Rosenkrans, J. D. Caldwell, D. L. Kreider, John A. Jennings, Michael Looper, Donald S. Hubbell, Kenneth P. Coffey, D.L. Galloway
Publikováno v:
Livestock Science. 135:44-52
Fall-born calves grazing Neotyphodium coenophialum-infected tall fescue [E+; Lolium arundinaceum (Schreb.) Darbysh.] pastures should benefit from early weaning because of reduced exposure to fungal toxins. However, fall-born calves that grazed E+ and
Publikováno v:
Poultry Science. 89:328-334
One-day-old chicks were used to evaluate testis development and concentrations of luteinizing hormone, follicle-stimulating hormone (FSH), and testosterone during ontogenesis. Males on a conventional breeder program (control) were reared on a 15L:9D
Publikováno v:
The Professional Animal Scientist. 25:300-306
To evaluate a modified glucomannan to mitigate fescue toxicosis, 45 steer calves (BW = 281 ± 7.0 kg) grazed nine 2-ha pastures of endemic endophyte-infected tall fescue (Festuca arundinacea) for 133 d begininning in March of each year (2 yr; 5 steer
Autor:
Kenneth P. Coffey, Charles F. Rosenkrans, J. D. Caldwell, Don S Hubbell, W.K. Coblentz, John A. Jennings, Michael Looper, D. L. Kreider
Publikováno v:
Forage & Grazinglands. 7:1-7
Autor:
D. L. Kreider, Charles F. Rosenkrans, Rick Rorie, M. A. Lamb, R. Flores, Michael Looper, S. T. Reiter, Dennis M. Hallford
Publikováno v:
Journal of Animal Science. 85:1318-1329
Ninety-nine multiparous Brahman-influenced (1/4 to 3/8 Brahman) cows were managed to achieve low (BCS = 4.3 +/- 0.1; n = 50) or moderate (BCS = 6.1 +/- 0.1; n = 49) body condition (BC) to determine the influence of bovine somatotropin (bST) on estrou
Autor:
Donald S. Hubbell, Kenneth P. Coffey, D. L. Kreider, Charles P. West, John A. Jennings, D. H. Hellwig, Charles F. Rosenkrans, T. F. Smith, J. E. Turner, J. B. Humphry, D. A. Scarbrough, W. K. Coblentz, Michael P. Popp, B. C. McGinley
Publikováno v:
Crop Science. 46:1929-1938
A 4-yr trial was initiated in January 2000 to evaluate cow-calf performance on mixed-species pasture systems consisting of (i) endophyte-infected tall fescue (E+; Festuca arundinacea Schreb.) diluted by approximately 50% with common bermudagrass [Cyn
Autor:
Michael P. Popp, D. H. Hellwig, D. L. Kreider, Charles P. West, John A. Jennings, Donald S. Hubbell, Kenneth P. Coffey, D. A. Scarbrough, T. F. Smith, Charles F. Rosenkrans, J. E. Turner, B. C. McGinley, W. K. Coblentz, J. B. Humphry
Publikováno v:
Crop Science. 46:1919-1928
A systems trial was designed to evaluate forage characteristics within mixed-species pastures consisting of (i) endophyte-infected tall fescue (Festuca arundinacea Schreb.; E+) mixed with common bermudagrass [Cynodon dactylon (L.) Pers.] and other fo
Publikováno v:
Journal of Animal Science. 84:1916-1925
Spring-calving, crossbred (1/4 to 3/8 Brahman) primiparous (n = 56) and multiparous (n = 102) beef cows were used to evaluate the effects of progesterone, delivered via a controlled internal drug-releasing (CIDR) device, and prostaglandin F(2alpha) (
Publikováno v:
The Professional Animal Scientist. 21:365-370
This experiment was conducted to determine the effects of diet and pattern of gain on reproductive performance. On November 24, 80 spring-born Angus- and Brangus-sired heifers (BW = 230 ± 23 kg) were allotted by breed and BW to one of four treatment