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Full-Text Articles in Dairy Science
Effects Of Milk, Pasteurized Milk, And Milk Replacer On Health And Productivity Of Dairy Calves (2014), Lindsey E. Hulbert, Sophia A. Trombetta, Jere A. Noel, Sonia J. Moisa
Effects Of Milk, Pasteurized Milk, And Milk Replacer On Health And Productivity Of Dairy Calves (2014), Lindsey E. Hulbert, Sophia A. Trombetta, Jere A. Noel, Sonia J. Moisa
Kansas Agricultural Experiment Station Research Reports
Our objectives were to determine the health and blood parameters before, during, and after weaning of 114 Holstein heifers fed either accelerated milk replacer (MR; 28% CP, 18% fat) or non-saleable milk (3.59 ± 0.28% true protein; 4.12 ± 0.37% fat) that was either pasteurized (PM) or raw (RM; refrigerated and fed collection). Calves were randomly assigned to feeding treatments at birth. Colostrum (1 L) was fed less than 14 hours after birth (MR and PM = pasteurized colostrum; RM = raw colostrum). All calves were bottle-fed 1.8 ± 0.20 L, 3 times daily; all calves were provided fresh water …
Yeast Product Supplementation Influences Feeding Behavior And Measures Of Immune Function In Transition Dairy Cows (2014), Kai Yuan, Mary Beth Muckey, Luis Mendonca, Lindsey E. Hulbert
Yeast Product Supplementation Influences Feeding Behavior And Measures Of Immune Function In Transition Dairy Cows (2014), Kai Yuan, Mary Beth Muckey, Luis Mendonca, Lindsey E. Hulbert
Kansas Agricultural Experiment Station Research Reports
Yeast supplementation has been shown to increase feed intake and production in some studies with early lactation dairy cows, but the mechanisms underlying this effect remain unknown. The objective of this study was to assess the effects of supplementing a yeast product derived from Saccharomyces cerevisiae on production, feeding behavior, and immune function in cows during the transition to lactation. When fed for 3 weeks before calving through 6 weeks after calving, supplementation altered feeding behavior as well as responsiveness to vaccination and gut immunoglobulin secretion. Results suggest that yeast products can modulate several aspects of immune function and promote …
Luteolysis And Pregnancy Outcomes After Change In Dose Delivery Of Prostaglandin F2Α In A 5-Day Timed Artificial Insemination Program In Dairy Cows (2014), Jeffrey S. Stevenson, Stephanie Leeann Pulley, Scott L. Hill
Luteolysis And Pregnancy Outcomes After Change In Dose Delivery Of Prostaglandin F2Α In A 5-Day Timed Artificial Insemination Program In Dairy Cows (2014), Jeffrey S. Stevenson, Stephanie Leeann Pulley, Scott L. Hill
Kansas Agricultural Experiment Station Research Reports
Three experiments were conducted to determine if a larger dose of prostaglandin F2α (PG) administered on day 6 of a 5-day Ovsynch timed artificial insemination (AI) program would induce regression of the corpus luteum to facilitate AI and pregnancy outcomes similar to a traditional 5-day program with two doses of PG. When applying a 5-day program, cows that ovulate in response to the first GnRH injection have a new corpus luteum (CL) that is 2 days younger when PG is administered in a 5- versus 7-day program. To regress successfully the younger CL, a second injection of PG must be …
Effects Of Postpartum Treatment With Non-Steroidal Anti-Inflammatory Drugs On Milk Production And Culling Risk In Dairy Cattle (2014), Abigail J. Carpenter, Caroline M. Ylioja, Claudio F. Vargas, Laman K. Mamedova, L. Mendonca, Johann F. Coetzee, L. Hollis, R. Gehring, B. Bradford
Effects Of Postpartum Treatment With Non-Steroidal Anti-Inflammatory Drugs On Milk Production And Culling Risk In Dairy Cattle (2014), Abigail J. Carpenter, Caroline M. Ylioja, Claudio F. Vargas, Laman K. Mamedova, L. Mendonca, Johann F. Coetzee, L. Hollis, R. Gehring, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Inflammation during early lactation is common in dairy cattle, and a high degree of inflammation during this time has recently been associated with both lower productivity and greater risk of disease during that lactation. Early lactation treatments with two non-steroidal anti-inflammatory drugs were compared with a placebo treatment to evaluate effects on whole-lactation productivity and retention in the herd. Both meloxicam and sodium salicylate increased whole-lactation milk and milk protein yields by 6 to 9%, despite being administered for only 1 or 3 days in early lactation, respectively. In addition, meloxicam treatment tended to decrease the risk of cows leaving …
Milking Time During Periods Of Heat Stress: Part Of The Solution Or Part Of The Problem? (2014), L. Rocha, Lindsey E. Hulbert, Filippe Scortegagna, Benjamin Voelz, L. Mendonca
Milking Time During Periods Of Heat Stress: Part Of The Solution Or Part Of The Problem? (2014), L. Rocha, Lindsey E. Hulbert, Filippe Scortegagna, Benjamin Voelz, L. Mendonca
Kansas Agricultural Experiment Station Research Reports
Milking time may be a stressful event for lactating dairy cows during summer. Increases in body temperatures because of crowding in the milk parlor holding pen may contribute to increased heat stress. The objective of this extension project was to evaluate the effectiveness of heat stress abatement in milking facilities from two Kansas commercial dairies. Vaginal temperatures at milking were lower than vaginal temperatures before milking in one of the dairies. The lower vaginal temperatures at milking, however, were not observed in the other dairy at all milkings, likely because of differences in efficacy of heat abatement strategies. Milking facilities …
Preliminary Studies On In Situ Monitoring Of Lactose Crystallization Using Focused Beam Reflectance Measurement (2014), Karthik Pandalaneni, Jayendra K. Amamcharla
Preliminary Studies On In Situ Monitoring Of Lactose Crystallization Using Focused Beam Reflectance Measurement (2014), Karthik Pandalaneni, Jayendra K. Amamcharla
Kansas Agricultural Experiment Station Research Reports
Isothermal crystallization of lactose was studied at supersaturated concentrations (w/w) of 50%, 55%, and 60% at temperatures 20ºC and 30ºC using an in situ system, focused beam reflectance measurement (FBRM), and a refractometer. The FBRM data were compared with Brix readings taken over time using a refractometer during isothermal crystallization. Chord length distribution obtained from FBRM in the ranges of<50>μm (fine crystals) and 50 to 300 μm (coarse crystals) were observed and evaluated in relation to the extent of crystallization and rate constant results deduced from the refractometer measurements. The measured fine crystal counts increased with supersaturated concentration and …