James K. Drackley
University of Illinois at Urbana–Champaign
Internal medicineEndocrinologyAnimal scienceNutrientLatin squareComposition (visual arts)ChemistryIce calvingSilageLactationDairy cattleInsulinNEFADry matterFood scienceFatty acidBiochemistryMetabolismRumenBiology
259Publications
74H-index
11.5kCitations
Publications 253
Newest
#1R. Shiasi Sardoabi (IUT: Isfahan University of Technology)
#2Masoud Alikhani (IUT: Isfahan University of Technology)H-Index: 14
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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BACKGROUND In recent years, there has been an increasing interest in using high quantities of milk or milk replacer (MR) in heat-stressed calves to alleviate the negative effects of high environmental temperatures on their performance. However, observations have indicated a decline in growth performance in the weaning and post-weaning period, which might be optimized with increasing total solids (TS) in milk and weaning age. This study aims to optimize the effects of higher quantities of milk on...
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#1B.S. Henrichs (UIUC: University of Illinois at Urbana–Champaign)
#2K.N. Brost (UIUC: University of Illinois at Urbana–Champaign)H-Index: 1
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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Spray-dried plasma protein (SDP) has been shown to improve growth and intestinal function in young calves when included in milk replacers (MR) fed at conventional rates. Use of an SDP and wheat protein blend to replace a portion of whey protein has been shown to perform similarly to using an all-whey protein control MR. However, a trend in the dairy industry is to feed calves for greater rates of growth during the preweaning period. The purpose of this study was to determine the effects of incre...
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#1A. Razzaghi (FUM: Ferdowsi University of Mashhad)H-Index: 4
#2James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
Last. M. Malekkhahi (FUM: Ferdowsi University of Mashhad)H-Index: 4
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ABSTRACT The study goal was to determine the effects of a fast (FAS) or slow (SLW) incremental rate of concentrate feeding and corn processing method during the early postpartum period on lactational performance, body reserves, blood metabolites, and milk fatty acid (FA) profile. Forty multiparous Holstein cows were used in a randomized block design with a 2 × 2 factorial arrangement of treatments. Treatment diets were either a FAS [1.0 kg of dry matter (DM)/d] or SLW (0.25 kg of DM/d) increment...
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#1C.J. Ottemann Abbamonte (UIUC: University of Illinois at Urbana–Champaign)
#2Thomas R. Overton (UIUC: University of Illinois at Urbana–Champaign)H-Index: 50
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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Modulatory effects of l-carnitine, acetate, propionate, and 5-tetradecyloxy-2-furoic acid (TOFA; an inhibitor of acetyl-CoA carboxylase) on oxidation and esterification of [1-14C]-palmitate were studied in hepatocytes isolated from phlorizin-treated and control wethers. Our hypotheses were that (1) palmitate oxidation would be greater in hepatocytes from sheep injected with phlorizin; (2) l-carnitine would increase palmitate oxidation more in hepatocytes from sheep injected with phlorizin; and (...
1 CitationsSource
#1J. Stamey Lanier (UIUC: University of Illinois at Urbana–Champaign)H-Index: 1
#2Floyd K. Mckeith (UIUC: University of Illinois at Urbana–Champaign)H-Index: 65
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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ABSTRACT Our objectives were to determine the effect of starter crude protein (CP) content on body composition of male Holstein calves from birth to 10 wk of age in an enhanced early nutrition program, and to compare the enhanced program to a conventional milk replacer program. Calves (n = 45) were purchased on the day of birth and assigned to a randomized block design. Eight calves were harvested at baseline and remaining calves were divided among the following 3 dietary treatments: (1) low rat...
3 CitationsSource
#1A. Mirzakhani (IUT: Isfahan University of Technology)
#2Gholam Reza Ghorbani (IUT: Isfahan University of Technology)H-Index: 15
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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ABSTRACT The present study was conducted to investigate the effects of crude protein (CP) content of starter feed and wheat straw (WS) processing on growth performance, digestibility, ruminal fermentation, and behavior of Holstein calves. Sixty calves (28 male and 32 female) were randomly assigned to 1 of 4 treatments in a randomized complete block design. Treatments in a 2 × 2 factorial arrangement were (1) lower-CP ground starter feed mixed with alkali-processed WS (LP-PWS), (2) lower-CP groun...
1 CitationsSource
#1John A. Vasquez (UIUC: University of Illinois at Urbana–Champaign)H-Index: 25
#2M.M. McCarthyH-Index: 6
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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ABSTRACT Our objectives were to evaluate the effects of prepartum monensin supplementation and dry-period nutritional strategy on the postpartum productive performance of cows fed monensin during lactation. A total of 102 Holstein cows were enrolled in the experiment (32 primiparous and 70 multiparous). The study was a completely randomized design, with randomization restricted to balance for parity, body condition score, and expected calving date. A 2 × 2 factorial arrangement of prepartum trea...
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#1I. Ansia (UIUC: University of Illinois at Urbana–Champaign)H-Index: 2
#2Hans H Stein (UIUC: University of Illinois at Urbana–Champaign)H-Index: 26
Last. James K. Drackley (UIUC: University of Illinois at Urbana–Champaign)H-Index: 74
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ABSTRACT The aims of this experiment were (1) to compare the effects of a soybean meal with an enzymatic treatment (ESBM) to reduce the concentration of antinutritional factors versus a standard soybean meal (SBM) on foregut and small intestine digestion in weaned dairy calves and (2) to estimate the endogenous losses of crude protein (CP) in the small intestine. Our hypothesis was that a diet containing ESBM instead of SBM would improve ruminal and small intestine digestion and absorption of nu...
1 CitationsSource
#1Azam Jafari (Lorestan University)
#2Arash Azarfar (Lorestan University)H-Index: 12
Last. Morteza Hossieni Ghaffari (University of Bonn)
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The aim of this study was to investigate interactions between milk feeding quantity (FL) and feeding frequency (FF) on intake, growth performance, rumen development and blood metabolites in dairy c...
1 CitationsSource