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- Dairy Day (276)
- Kansas Agricultural Experiment Station contribution; no. 10-103-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1021; Dairy Day (13)
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- 2001; Kansas Agricultural Experiment Station contribution; no. 02-133-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 881; Dairy; Heat stress; Freestalls; Cow comfort (2)
- 2004; Kansas Agricultural Experiment Station contribution; no. 05-112-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 941; Dairy; Heat stress abatement; Cow comfort; Cow cooling (2)
- 2005; Kansas Agricultural Experiment Station contribution; no. 06-46-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 963; Dairy; Cow comfort; Cow cooling; Heat abatement (2)
- Bioavailability (2)
- Byproduct (2)
- Core body temperature (2)
- Dairy research (2)
- Estrus (2)
- Evaporative cooling (2)
- Fiber (2)
- Gonadotropin-releasing hormone (2)
- Heat abatement (2)
- Inflammation (2)
- L-carnitine (2)
- Lactation (2)
- Luteolysis (2)
- Lying behavior (2)
- Milk replacer (2)
- Milk yield (2)
- Nutrition (2)
- Ovsynch (2)
- PGF2α (2)
- Processing (2)
- Progesterone (2)
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Articles 31 - 60 of 450
Full-Text Articles in Life Sciences
2018 Dairy Research, B. J. Bradford
2018 Dairy Research, B. J. Bradford
Kansas Agricultural Experiment Station Research Reports
Research on dairy foods and dairy cattle performed in 2018 at Kansas State University.
Dominance Of Right Ovary Structures In Lactating Dairy Cows, J. S. Stevenson
Dominance Of Right Ovary Structures In Lactating Dairy Cows, J. S. Stevenson
Kansas Agricultural Experiment Station Research Reports
The objectives were to determine the absolute and relative ovary location of dominant and preovulatory follicles and corpora lutea (CL) present in ovaries before and during hormone synchronization and their associations with CL regression, ovulation, and pregnancy rates in lactating dairy cows. Cows were exposed to presynchronization treatments of PGF2a, GnRH, or both, 3 to 4 weeks before initiating a timed artificial insemination (AI) program (GnRH-1 – 7 days – PGF2α[1 dose or 2 doses 24 hours apart] – 56 hours after first or only dose of PGF2α– GnRH-2 – 16 hours – timed …
Productivity Of A Triticale And Crimson Clover Winter Cover Crop For Dairies, K. Olagaray, C. Takiya, M. Scheffel, T. Brown, J. S. Stevenson, D. H. Min, B. Bradford
Productivity Of A Triticale And Crimson Clover Winter Cover Crop For Dairies, K. Olagaray, C. Takiya, M. Scheffel, T. Brown, J. S. Stevenson, D. H. Min, B. Bradford
Kansas Agricultural Experiment Station Research Reports
The potential for a winter cover crop to align with agronomic objectives and to support milk production was evaluated at the Kansas State University Dairy Teaching and Research Center, Manhattan, KS. August planting of a triticale and crimson clover blend following corn silage harvest resulted in production of more than 3.5 tons of dry matter prior to subsequent corn planting. After ensiling, the impact of triticale/crimson clover silage (TCS) on milk production was evaluated in 48 mid- to late-lactation Holstein cows. Cows were blocked by parity (1 and 2+) and milk production, then randomly assigned within block to treatment sequence …
Dose And Frequency Of Pgf2Α Administration To Lactating Dairy Cows Exposed To Presynchronization And Either Five- Or Seven-Day Ovsynch Protocols: Ovulation, Luteolysis, And Pregnancy Rates, J. S. Stevenson, J. A. Sauls
Dose And Frequency Of Pgf2Α Administration To Lactating Dairy Cows Exposed To Presynchronization And Either Five- Or Seven-Day Ovsynch Protocols: Ovulation, Luteolysis, And Pregnancy Rates, J. S. Stevenson, J. A. Sauls
Kansas Agricultural Experiment Station Research Reports
Lactating Holstein cows in one herd were milked three times daily and enrolled in a 2 × 2 × 2 factorial design with eight treatments before first postpartum artificial insemination (AI). These treatments were employed to test ovulatory, progesterone, and luteolytic outcomes to three main effects: (1) two GnRH-PGF2αpresynchronization programs (PG-3-G vs. Double Ovsynch); (2) 5- vs. 7-day Ovsynch-duration programs; and (3) two doses (25 mg on consecutive days) or one dose (50 mg) of PGF2αadministered before timed AI. Results from this experiment demonstrate no differences in the presynchronization treatments of PG-3-G vs. Double Ovsynch; both …
Development Of A Berry Processing Score For Sorghum Silage And Assessment Of Processing Effects On Sorghum Silage Starch Digestibility, J. R. Johnson, J. P. Goeser, Michael Brouk
Development Of A Berry Processing Score For Sorghum Silage And Assessment Of Processing Effects On Sorghum Silage Starch Digestibility, J. R. Johnson, J. P. Goeser, Michael Brouk
Kansas Agricultural Experiment Station Research Reports
The objectives of this study were to develop a berry processing score (BPS) for sorghum silage, similar to the kernel processing score currently used for corn silage, and to evaluate the effects of processing on starch digestibility. Sorghum silage samples were collected from commercial farms in Kansas and randomly assigned to 1 of 4 processing levels differing in roll gap spacing: unprocessed (UNP), 1.5 (1.5P), 1.0 (1.0P), or 0.5 (0.5P) mm. Differences in BPS and starch digestibility were found–as the roll gap decreased, both BPS and starch digestibility increased. Thus, by processing sorghum silage during harvest and measuring the extent …
Effects Of Milk Feeding Strategies On Short- And Long-Term Productivity Of Holstein Cows, M. Garcia, S. R. Montgomery, L. Hulbert, B. Bradford
Effects Of Milk Feeding Strategies On Short- And Long-Term Productivity Of Holstein Cows, M. Garcia, S. R. Montgomery, L. Hulbert, B. Bradford
Kansas Agricultural Experiment Station Research Reports
The objectives of this study were to determine the impacts of feeding preweaning heifers with a high protein milk replacer (MR) or a raw or pasteurized non-saleable milk (NSM) on preweaning and first lactation performance. Holstein heifers (n = 154) were blocked by birth date and weight (BW) and within block randomly assigned to 1 of 3 treatments: 1) MR (4% protein and 2.6% fat, liquid basis); 2) pasteurized NSM (PNSM, 3.6% protein and 4.1% fat, liquid basis); or 3) raw NSM (RNSM, 3.6% protein and 4.1% fat, liquid basis). Heifers in RNSM were fed raw colostrum whereas heifers in …
The Effects Of An Evaporative Cooling System On Reducing Heat Load In Lactating Dairy Cows, J. R. Johnson, M. J. Wolf, J. Mcbride, Michael Brouk
The Effects Of An Evaporative Cooling System On Reducing Heat Load In Lactating Dairy Cows, J. R. Johnson, M. J. Wolf, J. Mcbride, Michael Brouk
Kansas Agricultural Experiment Station Research Reports
This study was conducted to evaluate the effect of 2 cooling systems on barn temperature, core body temperature (CBT), respiration rate, rear udder temperature, and lying time in lactating Holstein dairy cows. Twenty lactating Holstein dairy cows were randomly assigned to 1 of 2 treatment groups: CONV, where cows were housed in a conventional, open-sidewall freestall barn equipped with feedline soakers and fans located over the feedline and stalls; and TUNNEL, where cows were housed in a tunnel-ventilated freestall barn utilizing an evaporative cooling system. TUNNEL was effective at reducing barn temperature humidity index (THI) compared to CONV, but failed …
Association Between Reproduction And Postpartum Cow Health During Summer Months In Dairies Located In The Great Plains Region, L. Mendonca, A. Scanavez
Association Between Reproduction And Postpartum Cow Health During Summer Months In Dairies Located In The Great Plains Region, L. Mendonca, A. Scanavez
Kansas Agricultural Experiment Station Research Reports
Postpartum cow health has an impact on fertility of dairy cows, and impaired fertility in dairy herds ultimately influences profitability of dairy farms. During summer months, postpartum cow health and reproductive performance are affected in dairies located in the Great Plains region. The goal for this study was to evaluate farm-level associations between reproductive efficiency and postpartum cow health in dairy herds located in the Great Plains region. Data from June to August of 2010 to 2016 from 18 herds located in Colorado, Kansas, Oklahoma, Nebraska, and Texas were extracted. Overall pregnancy per AI was used as the measure of …
Resynchronization Of Lactating Dairy Cows At Open Pregnancy Diagnosis Based On The Presence Or Absence Of A Corpus Luteum: A Practical Approach, J. A. Sauls, J. S. Stevenson
Resynchronization Of Lactating Dairy Cows At Open Pregnancy Diagnosis Based On The Presence Or Absence Of A Corpus Luteum: A Practical Approach, J. A. Sauls, J. S. Stevenson
Kansas Agricultural Experiment Station Research Reports
Lactating Holstein cows in three herds were enrolled in a study at the time of nonpregnancy diagnosis. Cows were assigned to a resynchronization program based on ovarian structures determined by transrectal ultrasonography. Three resynchronization treatments were employed starting on the day of open diagnosis to test: (1) accuracy of ultrasound technician’s ability to identify a functional corpus luteum (CL); (2) whether an initial GnRH injection is required to start resynchronization when a CL is present at nonpregnant diagnosis (Short Synch: PGF2α— 24 hours — PGF2α— 32 hours — GnRH — 16 hours — timed artificial insemination …
Acknowledgments
Kansas Agricultural Experiment Station Research Reports
Appreciation is expressed to the following organizations for their support of dairy teaching, research, and extension at Kansas State University during 2016-2017.
Case Study: Improving Heat Abatement Strategies For Lactating Dairy Cows In Southwest Kansas, L. Mendonca, A. Scanavez
Case Study: Improving Heat Abatement Strategies For Lactating Dairy Cows In Southwest Kansas, L. Mendonca, A. Scanavez
Kansas Agricultural Experiment Station Research Reports
Temperature loggers attached to intravaginal devices can be used to assess severity of heat stress in dairy cows. Vaginal temperature data collected using this method can be used to evaluate effectiveness of heat abatement systems. The goal for this study was to use vaginal temperature information to evaluate the impact of implementing new heat abatement strategies in order to minimize heat stress in lactating dairy cows. Vaginal temperature of cows from 2 dairies located in southwest Kansas were assessed during summers of 2014 and 2017. Dairy A improved the heat abatement systems in 2017, while Dairy B did not. Historical …
Effects Of Dietary Supplementation Of Scutellaria Baicalensis Extract During Early Lactation On Milk Production Of Dairy Cattle, K. Olagaray, Michael Brouk, F. Robert, E. Dupuis, B. Bradford
Effects Of Dietary Supplementation Of Scutellaria Baicalensis Extract During Early Lactation On Milk Production Of Dairy Cattle, K. Olagaray, Michael Brouk, F. Robert, E. Dupuis, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Multiparous Holstein cows (n = 122) were used in a randomized block design to determine the effect of short-term and long-term postpartum administration ofScutellaria baicalensisextract (SBE) on 305-day milk yield, 120-day milk component yield, and early lactation milk markers of inflammation and metabolic function. Treatments were (1) control, (2) short-term (5-day) administration of the SBE (SBE5), and (3) longterm (60-day) administration of the SBE (SBE60). Treatments were included in a treatment pellet that was identical to the control pellet in ingredient source and composition except for the extract, and both pellets were provided via an automated milking system. …
Full Report, B. Bradford
Full Report, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Kansas State University is pleased to present the 2017 Dairy Research Report of Progress.
Foreword, B. Bradford
Foreword, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Kansas State University is pleased to present the 2017 Dairy Research Report of Progress. We continue to watch the Kansas dairy industry grow, and in 2016 our state ranked 10th for largest growth in total milk produced. During the past 5 years (2011 to 2016), total milk production in Kansas has increased by 29%; the number of cows by 18%; and annual pounds of milk per cow by 1,785. Therefore, the Kansas dairy herd is not only growing, but is becoming more productive and efficient. At the end of 2016, Kansas ranked 13th nationally in milk yield per cow at …
Foreword, Dairy Research 2016, B. Bradford
Foreword, Dairy Research 2016, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Kansas State University is pleased to present the 2016 Dairy Research Report of Progress.
Increasing Estrus Expression In Lactating Dairy Cows, J. A. Sauls, B. E. Voelz, J. Stevenson
Increasing Estrus Expression In Lactating Dairy Cows, J. A. Sauls, B. E. Voelz, J. Stevenson
Kansas Agricultural Experiment Station Research Reports
This report summarizes the use of various hormones in an attempt to induce greater estrus expression of lactating dairy cows. Average detection of estrus (<50%) in most U.S. dairy herds has been identified as a problem limiting reproductive efficiency. Detection of estrus plays an important role in reproductive management in U.S. dairy herds despite the adoption of fixed-time artificial insemination programs. When estrus was detected by an activity monitoring system or a rump-mounted device, supplementing cows with progesterone before induction of luteolysis resulted in greater intensity of estrus when compared with controls. In addition, administering estradiol cypionate at 24 h after induced luteolysis resulted in greater frequency of estrus expression compared with cows treated with testosterone propionate or controls when assessed by an activity monitor. Activity monitoring systems achieved heat-detection rates of approximately 70% (80% with estradiol) and are likely cost effective for herds achieving less than that level of heat detection.
Effects Of Dietary Zinc Source And Level On Mammary Epithelia And Dairy Food Chemistry, J. Shaffer, K. Pandalaneni, L. Mamedova, J. Defrain, J. Amamcharla, B. Bradford
Effects Of Dietary Zinc Source And Level On Mammary Epithelia And Dairy Food Chemistry, J. Shaffer, K. Pandalaneni, L. Mamedova, J. Defrain, J. Amamcharla, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Twelve lactating Holstein cows (132 ± 21 days in milk) were enrolled in a Latin square experiment to explore the extent to which source and amount of supplemental dietary Zn can impact barrier function of mammary epithelial tissue. Cows received either 970 mg supplemental Zn/day as ZnSO4(LS), 1,640 mg supplemental Zn/day as ZnSO4(HS), or 1,680 mg supplemental Zn/day as a mixture of ZnSO4and Zn methionine complex (HC). Treatments lasted for 17 days followed by 4 days of sample collection. Blood and milk were collected and analyzed for markers of blood-milk leak including plasma lactose …
Effectiveness Of Two Ruminally Protected Methionine Sources For Lactating Dairy Cows, M. Ardalan, F. Vargas-Rodriguez, G. I. Zanton, M. Vázquez-Añón, E. Titgemeyer, B. Bradford
Effectiveness Of Two Ruminally Protected Methionine Sources For Lactating Dairy Cows, M. Ardalan, F. Vargas-Rodriguez, G. I. Zanton, M. Vázquez-Añón, E. Titgemeyer, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Two sources of ruminally protected methionine were tested for their ability to provide available methionine to lactating dairy cattle. Based on milk protein yield and milk protein percent, NTP-1401 (an unreleased product from Novus International, Inc., St. Charles, MO) and Smartamine (Adisseo, αretta, GA) provided similar amounts of available methionine to the cows. These two products led to different methioninerelated compounds appearing in blood plasma, suggesting that they contained different methionine precursors.
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 …
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 …
Bioavailability Of Ruminally Or Abomasally Infused L-Carnitine In Holstein Heifers, K. Olagaray, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford
Bioavailability Of Ruminally Or Abomasally Infused L-Carnitine In Holstein Heifers, K. Olagaray, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford
Kansas Agricultural Experiment Station Research Reports
This study evaluated the relative bioavailability of carnitine delivered by different methods in dairy cattle. Four Holstein heifers were used in a split-plot design to compare ruminally or abomasally infused L-carnitine. The study included 2 main-plot periods, with infusion routes allocated in a crossover design. Within main-plot periods, each of 3 subplot periods consisted of 4-d infusions separated with 4-d rest periods. Subplot treatments were infusion of 1, 3, and 6 g L-carnitine daily. Doses were increased within a period to minimize carryover. Treatments were delivered in two 10-h infusions daily. Blood was collected before the start of infusions and …
Acknowledgments, Dairy Research 2016, B. Bradford
Acknowledgments, Dairy Research 2016, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Appreciation is expressed to the following organizations for their support of dairy teaching, research, and extension at Kansas State University during 2015-2016.
Dairy Research 2016, Full Report, B. Bradford
Dairy Research 2016, Full Report, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Kansas State University is pleased to present the 2016 Dairy Research Report of Progress.
Assessing Training Methods To Educate Dairy Workers, L. Mendonca, B. E. Voelz, A. Scanavez
Assessing Training Methods To Educate Dairy Workers, L. Mendonca, B. E. Voelz, A. Scanavez
Kansas Agricultural Experiment Station Research Reports
Training employees is fundamental for dairy producers to achieve efficiency in order to increase profitability. Training videos offered online are becoming more common and recommended to train employees. The goals of this survey were to evaluate the comfort level of dairy employees in using computers and tablets, and preferred training delivery methods. A total of 71 employees from 6 dairies were interviewed. Interviews were conducted in the preferred language of the interviewee – English or Spanish. Of the respondents, 52 and 65.6% of employees consider computers and tablets easy to use, respectively. More than half of the employees reported that …
Additional Small Dose Of Prostaglandin F2Α At The Time Of Ai Fails To Improve Pregnancy Rates Of Lactating Dairy Cows, J. Stevenson, J. A. Sauls, L. Mendonca
Additional Small Dose Of Prostaglandin F2Α At The Time Of Ai Fails To Improve Pregnancy Rates Of Lactating Dairy Cows, J. Stevenson, J. A. Sauls, L. Mendonca
Kansas Agricultural Experiment Station Research Reports
In two experiments we tested the hypothesis that administering 10 mg of prostaglandin F2α(PGF) to lactating dairy cows concurrent with timed artificial insemination would increase pregnancy outcome. In three herds with 2,135 inseminations, we failed to demonstrate a positive effect on pregnancy per AI. Although a trend was observed in experiment 1, with more cows in experiment 2, the PGF treatment failed to improve pregnancy outcomes.
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 …
Bioavailability Of Rumen-Protected Carnitine In Lactating Dairy Cows, K. Olagaray, J. Shaffer, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford
Bioavailability Of Rumen-Protected Carnitine In Lactating Dairy Cows, K. Olagaray, J. Shaffer, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford
Kansas Agricultural Experiment Station Research Reports
For this study, 56 lactating Holstein cows (143 ± 72 days in milk) were used in a randomized complete block design to evaluate 2 rumen-protected products compared to crystalline carnitine. Treatments were a) control, b) 3 grams/day crystalline L-carnitine (raw), c) 6 grams/day raw, d) 5 grams/day 40COAT (40% coating, 60% L-carnitine), e) 10 grams/day 40COAT, f) 7.5 grams/day 60COAT (60% coating, 40% L-carnitine), and g) 15 grams/day 60COAT. Treatments were top-dressed to diets twice daily. The 14-day experiment included a 6-day baseline-measurement period with the final 2 days used for data and sample collection and an 8-day treatment period …
Guanidinoacetic Acid As A Precursor Of Creatine For Cattle, M. Ardalan, E. Batista, C. Armendariz, E. Titgemeyer
Guanidinoacetic Acid As A Precursor Of Creatine For Cattle, M. Ardalan, E. Batista, C. Armendariz, E. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Creatine serves as an energy-storing molecule in muscle, and in mammals it can be synthesized in the liver from guanidinoacetic acid (GAA). With this study, we evaluated whether GAA supplementation would lead to creatine production in cattle similarly to other species. Because the synthesis of creatine from GAA requires the use of a methyl group, we also evaluated the effect of supplementing methionine, as a methyl group donor, on the synthesis of creatine.
Supplemental GAA did increase plasma concentrations of creatine. Also, blood concentrations of arginine, a precursor to GAA, were increased by GAA supplementation, suggesting that arginine use for …
Effects Of Cobalt Source On Rate And Extent Of Dry Matter And Fiber Degradation In Vitro, F. Vargas-Rodriguez, Gail Carpenter, J. Defrain, B. Bradford
Effects Of Cobalt Source On Rate And Extent Of Dry Matter And Fiber Degradation In Vitro, F. Vargas-Rodriguez, Gail Carpenter, J. Defrain, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Positive effects on fiber degradation have been observed when supplemental cobalt was fed to ruminants. This study tested the effects of cobalt carbonate (CoCarb) and cobalt glucoheptonate (CoGH) at different concentrations on in vitro fermentation rate, fermentation end-product concentrations, and degradation of feed dry matter and neutral detergent fiber. Compared to CoCarb, CoGH increased dry matter disappearance and neutral detergent fiber degradation when added at 1 part per million (ppm) cobalt or less. Furthermore, CoGH had limited effects on the biohydrogenation of long chain fatty acids, whereas CoCarb appeared to stimulate this process when added at more than 3 ppm …
Spinning Straw Into Milk: Can An All- Byproduct Diet Support Milk Production?, M. Hulett, C. Ylioja, T. Wickersham, B. Bradford
Spinning Straw Into Milk: Can An All- Byproduct Diet Support Milk Production?, M. Hulett, C. Ylioja, T. Wickersham, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Ruminants are able to consume feeds that are unsuitable for humans and monogastric animals, and thus contribute to increased efficiency of our food systems. This study evaluated the performance of dairy cows consuming a diet comprised almost entirely of byproduct feeds, compared with cows consuming a typical lactation diet. The hypothesis was that the byproduct diet could support 80 lb/day of milk production. Although milk production and crude feed efficiency decreased compared to the typical diet, feed efficiency expressed as human-edible output per human-edible input increased for the byproduct diet. This study highlights the unique and important role played by …