Effects of grain species and grain processing method on DMI, rate and efficiency of gain, and feeding value for cattle fed high concentrate diets were appraised by statistically compiling results from 605 comparisons from feeding trials published in North American journals and experiment station bulletins since 1974. Metabolizable energy (ME) values for each grain and processing method were cal...

John M. Marsh (406) 994-5621 [email protected] Increases in the demand for cornbased ethanol have contributed to substantially higher corn prices. For example, Central Illinois corn prices increased from $1.84/bushel in the fourth quarter of 2005 to $3.28/bushel in the fourth quarter of 2006, an increase of 78.3 percent (LMIC, 2006). Much of the increase in corn prices occurred during the fall...

Carbon transfer to milk in Holstein cows in late lactation was measured by introducing changes in the natural stable carbon isotope composition of the feed. Six Holstein cows in mid-lactation were placed on a diet naturally low in 13C (-25.0% vs Pee Dee belemnite [PDB] an international carbon isotope standard), based on alfalfa-barley, and six others were placed on a diet naturally enriched in ...

Corn dried distillers grains with solubles (DDGS) contains high crude fat and is reported to confer to PUFA some degree of protection from ruminal biohydrogenation (BH). There is also indication that inclusion in diets of high energy feed such as DDGS results in a reduced response to monensin in feedlot cattle. This study was conducted to determine the effects of increasing corn DDGS inclusion ...

A 3-yr study was conducted to determine the effect of heifer development system on ADG, reproductive performance, and subsequent feed efficiency as a pregnant heifer. Crossbred Angus heifers (n= 299) were assigned by initial BW to be developed grazing corn residue (CR) or in a drylot (DL). Corn residue heifers grazed native pasture 33 d prior to grazing CR 73 d. Corn residue heifers were then p...

In this experiment, we evaluated the influence of increasing chop length and mechanical processing of whole-plant brown-midrib corn silage on intake, digestion, and milk production by dairy cows. Corn silage treatments were harvested at three-quarter milk line stage of maturity at 13- and 19-mm theoretical chop length without processing, or at 19- and 32-mm theoretical chop length with processi...

Samples of food crops (peanut, peeled pistachio, unpeeled pistachio, rice, and corn) and feed (barley, bran, corn) were autoclave-sterilized, and inoculated with 10(6) of spore suspension of an isolate of Aspergillus flavus fungus known to produce aflatoxin B1 (AFB1) . Following a 10-day period of incubation at 27 C to allow for fungal growth, food and feed samples were irradiated with gamma ra...

We evaluated the eff ects of irrigated crop management practices on nitrous oxide (N2O) emissions from soil. Emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0 to 246 kg N ha−1 during the 2005 and 2006 growing seasons. Cropping systems included conventional-till (CT) continuous corn (Zea mays L.), no-till (NT) continuous corn, NT corn–dr...