D.K. Combs
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Vision-based Vineyard Navigation Solution with Automatic Annotation Open
Autonomous navigation is the key to achieving the full automation of agricultural research and production management (e.g., disease management and yield prediction) using agricultural robots. In this paper, we introduced a vision-based aut…
View article: Identification of Genetic Loci Associated with Five Agronomic Traits in Alfalfa Using Multi-Environment Trials
Identification of Genetic Loci Associated with Five Agronomic Traits in Alfalfa Using Multi-Environment Trials Open
Yield is one of the most important agronomic traits in alfalfa breeding; however, this is a complex trait affected by genetic and environmental factors. In this study, we used multi-environment trials to test yield-related traits in a dive…
View article: Identification of Genetic Loci Associated with Five Agronomic Traits in Alfalfa Using Multi-Environment Trials
Identification of Genetic Loci Associated with Five Agronomic Traits in Alfalfa Using Multi-Environment Trials Open
Yield is one of the most important agronomic traits in alfalfa breeding; however, this is a complex trait affected by genetic and environmental factors. In this study, we used multi-environment trials to test yield-related traits in a dive…
View article: Alfalfa biotypes with putative enhanced cell wall digestibility and effects on performance of growing beef steers
Alfalfa biotypes with putative enhanced cell wall digestibility and effects on performance of growing beef steers Open
Three alfalfa biotypes were chosen based on the presumption that they would be sources of alfalfa herbage that differed in lignin concentration and therefore cell wall digestibility. The hypothesis was that a lesser lignin concentration wo…
View article: Genome-Wide Association Studies Identifying Multiple Loci Associated With Alfalfa Forage Quality
Genome-Wide Association Studies Identifying Multiple Loci Associated With Alfalfa Forage Quality Open
Autotetraploid alfalfa is a major hay crop planted all over the world due to its adaptation in different environments and high quality for animal feed. However, the genetic basis of alfalfa quality is not fully understood. In this study, a…
PSVIII-30 Reduced-lignin alfalfa digestibility and effects on performance of growing beef steers Open
Novel alfalfa varieties have been developed to have less lignin by genetic modification, (HarvXtra, Forage Genetics International) and by conventional breeding, (HiGest 360, Alforex Seeds). Second crop (d 29) of these alfalfas and a contro…
Randomized clinical trial to assess the effect of antibiotic therapy on health and growth of preweaned dairy calves diagnosed with respiratory disease using respiratory scoring and lung ultrasound Open
The primary objective of this randomized field study was to assess the effect of antibiotic therapy on health and growth of preweaned dairy calves diagnosed with naturally occurring respiratory disease, using respiratory scoring and portab…
Forage nutritive value and predicted fiber digestibility of Kernza intermediate wheatgrass in monoculture and in mixture with red clover during the first production year Open
Kernza intermediate wheatgrass is the first perennial grain crop in the world and has been developed with conventional breeding to increase seed yield of forage intermediate wheatgrass (Thinopyrum intermedium (Host) Barkworth & D.R. Dewey)…
Effect of milk feeding strategy and lactic acid probiotics on growth and behavior of dairy calves fed using an automated feeding system1 Open
Automated milk feeders offer flexibility to feed calves high milk allowances, to change the daily quantity of milk offered, and also to dispense additives like probiotics on an individual basis. Our objectives were to test the effects of 2…
Technical note: Comparison of dry matter measurements from handheld near-infrared units with oven drying at 60°C for 48 hours and other on-farm methods Open
This study compared dry matter (DM) predictions of 3 handheld near-infrared spectrophotometer (NIRS) units (Moisture Tracker, Digi-Star Inc., Fort Atkinson, WI) to conventional oven drying at 60°C using 2 alfalfa and 2 corn silages. In add…
Technical note: A comparison of alkali treatment methods to improve neutral detergent fiber digestibility of corn stover Open
The objective of this study was to compare neutral detergent fiber (NDF) digestibility of corn stover that had been treated by 2 alkali treatment methods. Two experiments were conducted to test a sodium hydroxide (NaOH) treatment method th…
The effects on digestibility and ruminal measures of chemically treated corn stover as a partial replacement for grain in dairy diets Open
Alkaline treatment of gramineous crop residues can convert an abundant, minimally utilized, poorly digestible straw into a moderately digestible feedstuff. Given the volatile nature of grain prices, substitution of treated stover for grain…
Effects of partial replacement of corn and alfalfa silage with tall fescue hay on total-tract digestibility and lactation performance in dairy cows Open
Our objective was to evaluate the effects of replacing either corn or alfalfa silage with tall fescue hay on total-tract neutral detergent fiber (NDF) digestibility and lactation performance in dairy cows. Twenty-four primiparous (75±35 d …
The effects of calcium hydroxide–treated whole-plant and fractionated corn silage on intake, digestion, and lactation performance in dairy cows Open
The objective of this trial was to evaluate, in dairy cattle, the effects of calcium hydroxide treatment of whole-plant corn and a treatment applied to the bottom stalk fraction of the corn plant, achieved by harvesting corn in 2 crop stre…
Comparison of in situ versus in vitro methods of fiber digestion at 120 and 288 hours to quantify the indigestible neutral detergent fiber fraction of corn silage samples Open
Ruminal digestion of neutral detergent fiber (NDF) is affected in part by the proportion of NDF that is indigestible (iNDF), and the rate at which the potentially digestible NDF (pdNDF) is digested. Indigestible NDF in forages is commonly …