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Full-Text Articles in Life Sciences
The Effect Of Stage Of Maturity On The Nutritive Value Of Smooth Bromegrass And Eastern Gamagrass Silages, J.E. Turner, M.K. Siefers, G.L. Huck, S.A. Anderson, K.K. Bolsen, Matthew A. Young
The Effect Of Stage Of Maturity On The Nutritive Value Of Smooth Bromegrass And Eastern Gamagrass Silages, J.E. Turner, M.K. Siefers, G.L. Huck, S.A. Anderson, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
Early- and late-harvested smooth bromegrass and eastern gamagrass silages and fourthcutting alfalfa silage were compared in two, 20- day voluntary intake and digestion trials. Visual appraisal and pH values indicated that all five forages were well preserved as silage. Voluntary intake tended to be higher for sheep fed bromegrass and alfalfa silages compared to those fed gamagrasssil ages. The late-harvested gamagrass silage had the lowest DM intake in both periods. Dry matter, crude protein, and neutral detergent fiber digestibilities were generally similar for the two grasses within the early- and late-harvested silages. Chemical analyses indicated that the two bromegrass silages …
Milking Twice Daily In The Presence Of A Cow’S Own Calf Fails To Prolong Postpartum Anestrus, G.C. Lamb, J.M. Lynch, B.L. Miller, David M. Grieger, Jeffrey S. Stevenson
Milking Twice Daily In The Presence Of A Cow’S Own Calf Fails To Prolong Postpartum Anestrus, G.C. Lamb, J.M. Lynch, B.L. Miller, David M. Grieger, Jeffrey S. Stevenson
Kansas Agricultural Experiment Station Research Reports
Six treatment s were initiated approximately 15 days after calving: 1) calf was weaned permanently from its dam (calf weaned; CW); 2) calf was present continuously with its dam but contact with the udder was prohibited (calf restricted; CR); 3) calf was present continuously with its dam (calf present; CP); 4) CR dam was suckled twice daily by her own calf (CR+S2x); 5) CW dam was milked twice daily (CW+M2x); 6) CR dam was milked twice daily (CR+ M2x). During the 4-week treatment period , cows in the CR+M2x treatment had twofold greater yield milk and milk components than CW+M2x …
Rapid Nutrient Evaluation Of Sorghum Silages Using Two Types Of Near-Infrared Reflectance Spectroscopy, K.J. Budiongo, L.H. Harbers, B.W. Seabourn, K.K. Bolsen, B.E. Brent
Rapid Nutrient Evaluation Of Sorghum Silages Using Two Types Of Near-Infrared Reflectance Spectroscopy, K.J. Budiongo, L.H. Harbers, B.W. Seabourn, K.K. Bolsen, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
This research was designed to develop a set of prediction equations to measure nutrient composition of Kansas sorghum silages using both a portable and a research type near-infrared spectrometer (NIRS). A robust set of equations for dry matter, crude protein, neutral detergent fiber, and acid detergent fiber was developed for a wide range of sorghum phenotypes . NIRS analysis of sorghum silages is feasible with both a tilting filter (portable) and research instrument with a grating monochrometer.
Failure Of Precalving Supplementation Of Vitamin E And Dietary Fat To Alter Reproductive Performance Of First Lactation Cows Or The Health Of Their Calves, J.L. Coalson, L.R. Corah, Gerald L. Stokka, Frank Blecha
Failure Of Precalving Supplementation Of Vitamin E And Dietary Fat To Alter Reproductive Performance Of First Lactation Cows Or The Health Of Their Calves, J.L. Coalson, L.R. Corah, Gerald L. Stokka, Frank Blecha
Kansas Agricultural Experiment Station Research Reports
A study was conducted to determine the effect of precalving supplementation with vitamin E and fat on the reproductive performance of first lactation cows and the health of their calves. Approximately 50 days before the first expected calving, 48 crossbred heifers were allotted to four treatments: 1) basal diet that consisted of 13 lb of prairie hay, 7.3 lb of milo, and 1 lb of supplement per heifer per day; 2) basal diet+supplement bringing the diet to 4% fat; 3) basal diet+supplement providing 1000 IU supplemental vitamin E/day; and 4) basal diet plus both fat and vitamin E. Supplementation of …
Fertility After Timed Breeding Using Gnrh, Pgf2, And Norgestomet, K. E. Thompson, G.C. Lamb, T.J. Marple, L.R. Corah, R.M. Mckee, Jeffrey S. Stevenson, David M. Grieger, David A. Nichols
Fertility After Timed Breeding Using Gnrh, Pgf2, And Norgestomet, K. E. Thompson, G.C. Lamb, T.J. Marple, L.R. Corah, R.M. Mckee, Jeffrey S. Stevenson, David M. Grieger, David A. Nichols
Kansas Agricultural Experiment Station Research Reports
At the KSU Purebred Unit, 164 purebred Angus, Hereford, and Simmental cows were used to test a new estrus-synchronization program using GnRH, PGF2, and norgestomet. Cows were inseminated after detected estrus, or in the absence of estrus, inseminations were made at one fixed time after a second injection of GnRH. The treatment consisted of a 100 µg injection of GnRH plus a 6-mg ear implant of norgestomet. Seven days later, the ear implant was removed, and 25-mg of PG F2% was injected. In the absence of estrus, the time-bred group received a second injection of GnRH 48 h after PGF2% …
A Novel Estrus-Synchronization Program For Anestrous And Cycling, Suckled, Beef Cows, W.L. Forbes, L.R. Corah, K. E. Thompson, G.C. Lamb, David M. Grieger, Jeffrey S. Stevenson
A Novel Estrus-Synchronization Program For Anestrous And Cycling, Suckled, Beef Cows, W.L. Forbes, L.R. Corah, K. E. Thompson, G.C. Lamb, David M. Grieger, Jeffrey S. Stevenson
Kansas Agricultural Experiment Station Research Reports
We used four herds at three Kansas ranches to evaluate the potential of two new estrus synchronization strategies to increase estrus expression and fertility of 911 crossbred suckled beef cows. The treatments included: 1) 100 μg of GnRH and a 6-mg norgestomet ear implant on day -7 and 25 mg of PG F2" and implant removal on day 0 (GnRH+NORG+PG F2"); 2) 100 μg of GnRH on day - 7 and 25 mg of PGF 2" on day 0 (GnRH+PG F2"); and 3 ) (control) 25- mg injections of PG F2" on days -14 and 0; (2xPGF2" control) . The …
Estrus Detection, First Service Conception, And Embryonic Death In Beef Heifers Synchronized With Mga And Prostaglandin, G.C. Lamb, B.L. Miller, V. Traffas, L.R. Corah
Estrus Detection, First Service Conception, And Embryonic Death In Beef Heifers Synchronized With Mga And Prostaglandin, G.C. Lamb, B.L. Miller, V. Traffas, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
In April, 1996, 1501 yearling crossbred heifers located on seven different ranches were estrus-synchronized and artificially inseminated (AI) 12 hours after they were detected in estrus. Herd size ranged from 82 to 43 9 head. Of the 1501 heifers, 86.1% were detected in estrus. First service conception rates of those 1292 heifers averaged 58.4% (40.3 to 68.8%). In three herds, ultrasonography was used to diagnose 525 heifers as pregnant at 30 days after AI. At 60 to 90 days after the breeding season, palpation of the uterus confirmed that embryonic death had occurred in 4.2% (4.0 to 4.8%). First service …
Effect Of Heifer Source On Reproductive Performance, Culling, Marketing And Profitability For A Commercial Heifer Development Program, J.M. Lynch, G.C. Lamb, L.R. Corah, David M. Grieger
Effect Of Heifer Source On Reproductive Performance, Culling, Marketing And Profitability For A Commercial Heifer Development Program, J.M. Lynch, G.C. Lamb, L.R. Corah, David M. Grieger
Kansas Agricultural Experiment Station Research Reports
A commercial heifer development operation purchased 483 weanling Angus x Hereford heifers from 11 sources. Heifers were fed a common silage-based diet through an initial developmental period and retained or culled based on average daily gain, pelvic area, and disposition . The percentage of heifers culled from each source ranged from 18.1% to 94.7% and were either sold directly through a local sale barn or sent to a feedlot with retained ownership . Estrus was synchronized, and heifers were artificially inseminated (AI) for 30 days followed by 15 days of natural mating. First service conception rates for each source ranged …