Dairy Science Commons^™

Crab And Lobster Shell Meal Taste Preferences Of Dairy Heifer Calves, Summer R. Pescinski, Peter S. Erickson

Honors Theses and Capstones

Objective: This preference study was conducted to evaluate the palatability of crab shell meal (CM) and lobster shell meal (LM) when added to calf starter for post-weaned dairy heifer calves.

Materials and methods: Six calves were used for a sequential elimination experiment to rank their taste preferences when offered control calf starter, calf starter mixed with 50 g of CM, and calf starter mixed with 50 g of LM.  The calves were kept on the study for a total of 5-d split into two feeding segments.  Preference was determined by calculating the total intake of each treatment …

Serum Concentrations Of Inflammatory Markers And Selected Nutrient Metabolites In Holstein And Jersey Cows Across The Transition Period, Avery Orr

Master's Theses

The transition period, spanning the weeks surrounding parturition, requires dairy cows to undergo synchronized metabolic, endocrine, and immunological adjustments that support the onset of lactation but also heighten disease susceptibility. Although individual inflammatory or metabolic biomarkers have been extensively studied, the integrated immunometabolic dynamics that occur across this period and the difference between breeds is not fully understood. The objective of this study was to characterize longitudinal patterns in key nutrient metabolites and inflammatory markers in Holstein and Jersey cows and assess how these systems interact across the transition period.

A total of 63 Holstein and Jersey cows were sampled …

Nutritive Comparison Of Ruminant Feed, Integrating Crab And Lobster Meal, Kelsi L. Devolve

Honors Theses and Capstones

In attempts to increase livestock production and decrease waste products from the seafood industry, crab meal and lobster meal were tested as a potential cattle feed ingredient. Jonah crab waste, Atlantic Red crab waste, soybean meal, and blood meal were collected from various vendors and utilized in an in vitro study, an in situ study, and a nitrogen analyzer to determine crude protein in each feed. After allowing the samples to sit in a DAISY incubator for 48 h, mimicking a rumen environment, degradability for the soybean meal, blood meal, lobster meal, and crab meal were 100.13%, 76.36%, 43.77%, and …

Understanding Milk Consumption Habits Among College Students In Order To Redesign Outreach, Stacey F. Stearns, Adam N. Rabinowitz

Journal of Extension

College students consume less dairy milk than in the past. Increased competition in the beverage aisle influences their choices. However, much of the population is not meeting the recommended intake guidelines for calcium. A survey of undergraduate college students with university dining plans focused on milk consumption habits, beverage choices, and student attitudes toward healthful foods and nutrition. Results are guiding Extension program educational outreach campaigns to college students. By focusing on the healthful and nutritional benefits of milk, Extension educators could increase consumption among college age consumers, and their long-term healthful outcomes.

The Use Of Grape By-Products As A Nutrient Rich Cattle Feed, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

In this article you will learn about how to use the grape stems, skins and pulp that are generated by the wine industry. Ruminant animals such as cattle can digest this inexpensive yet nutrient rich material. The complete process from wine press to cattle feed is covered in this article. The historical background of using grape by-products and methods to preserve this food source is also presented.

Growing Yeast For Livestock, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Over 500,000 tons of organic materials such as food scraps are disposed of each year in Wisconsin. A large percentage of this material could be composted or turned into useful products. The purpose of this article is to educate farmers and organizations on how to turn food waste into a high value food source for livestock. Yeast can be grown at any time of the year without the large inputs of agricultural chemicals and machinery that is common with other feed production methods. A yeast growing facility can be scalable to any size the producer wants such as a small …

Circulating Amino Acids In Blood Plasma During The Peripartal Period In Dairy Cows With Different Liver Functionality Index, Z. Zhou, J. J. Loor, F. Piccioli-Cappelli, F. Librandi, G. E. Lobley, E. Trevisi

Physiology Collection

The liver functionality index (LFI) measures the changes of albumin, cholesterol, and bilirubin concentrations between 3 and 28 d postpartum. This composite index, based on variables with direct relevance to liver-specific plasma protein synthesis (albumin), hepatic/intestinal lipoprotein synthesis (cholesterol), and clearance of breakdown products of heme catabolism (bilirubin), provides a tool for evaluating manifestations of hepatic disease. Both energy and protein metabolism are likely to be affected by various physiological challenges in this period but have not been tested systematically. The present study was conducted to profile AA in cows with high or low LFI during the peripartal period …

Body Condition Score And Plane Of Nutrition Prepartum Affect Adipose Tissue Transcriptome Regulators Of Metabolism And Inflammation In Grazing Dairy Cows During The Transition Period, M. Vailati-Riboni, M. Kanwal, O. Bulgari, S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. Mcdougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, J. J. Loor

Physiology Collection

Recent studies demonstrating a higher incidence of metabolic disorders after calving have challenged the management practice of increasing dietary energy density during the last ~3 wk prepartum. Despite our knowledge at the whole-animal level, the tissue-level mechanisms that are altered in response to feeding management prepartum remain unclear. Our hypothesis was that prepartum body condition score (BCS), in combination with feeding management, plays a central role in the peripartum changes associated with energy balance and inflammatory state. Twenty-eight mid-lactation grazing dairy cows of mixed age and breed were randomly allocated to 1 of 4 treatment groups in a 2 × …

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 …

Effect Of Direct-Fed Microbials And Enzyme Supplementation In Prepartum Holstein Cows On Colostrum And Calf Immunity, Erin M. Shangraw

Honors Theses and Capstones

In cows, colostrum is composed of several antibodies and nutrients to provide immunity and energy to the calf. Feeding calves high quality colostrum has been shown to improve calf health, leading to reduced mortality in calves and greater milk production in cows. The addition of direct-fed microbials (DFM) to cow diets has been theorized to improve feed efficiency and milk production, with studies showing mixed results. However, few experiments have studied the effect of feeding DFM on colostrum quality. In this experiment two treatments were given, 1) DFM and 2) DFM and enzymes (DFME). Colostrum was …

Best Management Practices For Raising Dairy Calves From Birth To Weaning, Alexa Cabral

Dairy Science

There are many different ways to raise calves on dairy farms in the United States. The way calves are raised can depend on the resources, natural environment and operation of the farm. There is no right or wrong way to raise calves. However, the aim of raising calves is to find the best way to raise a healthy calf so that she will become a productive cow. The objective of this literature review was to determine the ideal management practices for raising a healthy calf from birth to weaning. This literature analyzed numerous articles that covered all aspects of calf …

Variations In Carotenoids In Plasma From Jersey Cows At An Organic Dairy Compared To A Conventional Dairy Over Time, Jillian M. Smith

Honors Theses and Capstones

Interest in organic milk is increasing. By USDA Certified Organic standards, animals must be fed on pasture for a minimum of 120 days. Research indicates that various factors such as diet impact the nutritional quality and composition of milk. The objective of this study was to understand how feeding practices affected bovine plasma carotenoid concentrations over time. Plasma samples were collected from 9 cows fed on pasture at an organic dairy and from 9 cows fed total mixed ration (TMR) at a conventional dairy. Components were extracted from the plasma and separated via High Performance Liquid Chromatography. Results showed that …

Algae As An Economical Protein Source For Dairy Cattle Nutrition, Brian Azevedo

Dairy Science

Dairying continues to change with economic and environmental demands of today’s fast moving society. Feed costs continue to rise and now account for a large majority of expenses on dairies; especially protein, which has become expensive to purchase. I believe that Algae can serve as a possible solution to aid in alleviating this problem. Algae grow rapidly and consume undesirable carbon dioxide to release oxygen to the environment, making it an environmentally friendly source of feed. There are particular strands of algae that are high in protein. During the course of this project, I intend to discover how effective protein …

Don't Neglect Those Dry Cows, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

WHEN a dairy cow becomes pregnant she is normally milking and has some months to go before being dried off.

It is usual at this stage for dairy farmers to provide the best feed available.