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Articles 1 - 5 of 5
Full-Text Articles in Dairy Science
The Effect Of Heat Stress And Essential Amino Acids On Production And Metabolism Of Lactating Dairy Cattle, Kimberly Rose Kassube
The Effect Of Heat Stress And Essential Amino Acids On Production And Metabolism Of Lactating Dairy Cattle, Kimberly Rose Kassube
Masters Theses
Heat stress (HS) causes decreases in production of lactating cattle that is only partially explained by decreases in intake. Evidence suggests that changes in energy and protein metabolism occur to cope with the impact of HS. The objective of this thesis was to determine if the effect of jugular infusion of essential amino acids (AA) ameliorated the negative effects of HS in milk production and metabolism. Twelve multiparous lactating Holstein cows were used in a crossover design to evaluate the effect of thermoneutral (THN) and HS environments along with the absence (CTL) …
Improving Feed Efficiency Through Forage Strategies For Increasing Dairy Profitability And Sustainability, Jon Patrick Pretz
Improving Feed Efficiency Through Forage Strategies For Increasing Dairy Profitability And Sustainability, Jon Patrick Pretz
Electronic Theses and Dissertations
Three studies were conducted to determine production parameters and study specific hypothesis in regard to improving feed efficiency through various forage utilization strategies with or without the inclusion of various supplemented products. The first study evaluated the supplementation of a cobalt-lactate product and its effects on fiber digestibility and milk production parameters when fed to cows consuming a 70% forage diet. Treatments included: 1) CONTROL diet containing 12.5 mg/cow/d of cobalt (carbonate carbonate) and 2) TEST diet being the same basal diet but including an additional 50 mg/cow/d of cobalt via a 1% Co-lactate product (Co-Max®). In a feeding trial …
Evaluation Of Weather Information From On-Farm And Meteorological Stations To Assess Heat Stress In Dairy Cows In Southwest Kansas, A. Scanavez, L. Rocha, B. E. Voelz, L. Hulbert, L. Mendonca
Evaluation Of Weather Information From On-Farm And Meteorological Stations To Assess Heat Stress In Dairy Cows In Southwest Kansas, A. Scanavez, L. Rocha, B. E. Voelz, L. Hulbert, L. Mendonca
Kansas Agricultural Experiment Station Research Reports
Heat stress represents a challenge for the dairy industry. In order for producers to implement appropriate management practices, it is crucial for researchers to assess the extent of heat stress to which cows are exposed during the summer. Temperaturehumidity index (THI) may be used to determine the severity of heat stress that cows are exposed to during the summer. The objective of this study was to evaluate climate conditions by calculating THI using information from: 1) an official meteorological station, 2) loggers at the pen-level, and 3) loggers at the cow-level from a commercial dairy located in southwest Kansas. Temperature-humidity …
Benchmarking Reproductive Efficiency And Transition Cow Health Of Kansas Dairy Herds, A. Scanavez, B. E. Voelz, L. Mendonca
Benchmarking Reproductive Efficiency And Transition Cow Health Of Kansas Dairy Herds, A. Scanavez, B. E. Voelz, L. Mendonca
Kansas Agricultural Experiment Station Research Reports
Comparing key performance indicators across dairy farms may provide insightful information to dairy producers. Differences in management philosophies, facilities, and locations of dairy farms may influence overall performance of dairy operations. An ongoing extension program aims to benchmark reproductive performance and transition cow health of dairy farms located in Kansas and adjacent states. In this report, we compiled data from 2013 to 2015 of herds enrolled in the program and divided the data in warm and cool seasons to evaluate the impact of heat stress on key performance indicators. Annual pregnancy risk and warm to cool ratio of pregnancy risk …
Development Of A Berry Processing Score For Sorghum Silage, J. R. Johnson, J. P. Goeser, Michael Brouk
Development Of A Berry Processing Score For Sorghum Silage, J. R. Johnson, J. P. Goeser, Michael Brouk
Kansas Agricultural Experiment Station Research Reports
This study was done in an effort to develop a berry processing score (BPS) for sorghum silage, similar to the kernel processing score (KPS) currently used for corn silage. Sorghum silage samples were collected from 3 dairies in Kansas and processed in the Grain Science & Industry grain processing laboratory at Kansas State University using one of four different roll gap settings to give four differently processed samples: unprocessed, 1.5, 1.0, or 0.5 mm. After drying, samples were placed into a Ro-Tap particle separation machine for 10 minutes until the whole sample was separated. Whole samples, as well as separated …