Life Sciences Commons^™

Cow Conundrum: The Science Behind Lactose Intolerance, Dana Morcillo

Osmosis Magazine

We’ve all heard those words before - lactose intolerant. You, a close friend, or even a random stranger at d-hall mutters those words and with it comes the inability to eat milk, cheese, and ice cream. But what does being lactose intolerant actually mean? Besides special access to that one refrigerator in d-hall you’ve always wondered about, lactose intolerance means that you lack a special enzyme needed to digest lactose - a sugar present in many of your favorite foods.

Mediator Margins In The Dairy Supply Chain And Factors Influencing Marketing Preferences In Eastern Mediterranean Region Of Turkey, Mehmet Feri̇t Can, Ayteki̇n Günlü, Yilmaz Aral, Tuğba Sarihan Şahi̇n, Mehmet Saltuk Arikan

Turkish Journal of Veterinary & Animal Sciences

The purpose of this study is to identify the shares of the intermediaries in the Eastern Mediterranean region milk supply chain (I) and to estimate the factors influencing the raw milk marketing preferences of milk producers (II). The research was conducted in 2017 with 102 dairy farms and 36 dairy industry enterprises in Hatay, Kahramanmaraş, and Osmaniye provinces. As a result of the research, it was found that 85% of the milk produced by dairy farms was offered to the market, 65% of the milk entering the supply chain was transferred to the dairy industry and the average capacity utilization …

Covid-19_Umaine News_Animal And Veterinary Sciences Seniors: Capstone Stories, University Of Maine Division Of Marketing And Communications

Division of Marketing & Communications

Screenshot of UMaine News press release regarding University of Maine animal and veterinary sciences capstone course AVS 401, students having the opportunity to combine their knowledge and skills with ongoing research of UMaine faculty.

Cooperative Extension Covid-19_Services & Programs Webpages, University Of Maine Cooperative Extension

Cooperative Extension

Screenshots of various University of Maine Cooperative Extension webpages featuring announcements regarding various programs, services, and publications provide by the Cooperative Extension during the COVID-19 pandemic.

Cooperative Extension Covid-19_Farming & Livestock Webpages, University Of Maine Cooperative Extension

Cooperative Extension

Screenshots of various University of Maine Cooperative Extension webpages featuring guidance and resources regarding farming and livestock during the COVID-19 pandemic.

Evaluation Of Casein Hydrolysate As An Alternative Dry-Off Treatment And Milk Quality Management Tool In Dairy Cows, Justine Elena Britten

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Mastitis, an infection of the mammary gland, is the most common and expensive animal health problem for the dairy industry and affects every dairy farm to some degree. This disease complex is painful for dairy cows, increases the on-farm use of antibiotics, presents a threat to milk quality and is a waste of time, money and milk production. Each year, the dairy industry loses as much as a billion dollars to mastitis.

Many cows will experience mastitis at least once during a lactation cycle and some animals will develop recurring mastitis episodes in a single mammary quarter. These mastitic quarters …

Genotypes And Phenotypes Of Staphylococci On Selected Dairy Farms In Vermont, Robert Mugabi

Graduate College Dissertations and Theses

The genus Staphylococcus contains at least 47 species and 23 subspecies. Bacteria in this genus are ubiquitous; many are commensals on human and animal skin and can be opportunistic pathogens. In dairy cattle, staphylococci are the leading cause of intramammary infections (IMI) and mastitis. Mastitis is the inflammation of the mammary gland, and is one of the leading infectious diseases causing production losses in the dairy industry. Based on the ability to clot blood plasma in vitro, members of the genus can be divided into two groups: coagulase positive staphylococci (CPS) and coagulase negative staphylococci (CNS). In the dairy industry, …

Lactose Intolerance: An Overview Of The Facts And Their Implications, Noelle M. Yeo

Honors Theses

Lactose intolerance is often blamed for the symptoms such as bloating, diarrhea, gas, abdominal pain, and nausea, that ail many people. Patients often do not seek proper diagnosis from a physician and create their own treatment plans, severely restricting lactose intake, without professional guidance. Even those who do seek the care of a physician find that diagnosis is complicated by less-than ideal testing and confusion due to the symptoms common to many other conditions. The misconceptions and inability to confirm a diagnosis of lactose intolerance can cause nutrient deficiencies in these patients, as well as begin a pattern of unnecessary …

Influence Of Dietary Component Manipulation And Feed Management Strategies On Growth And Rumen Development Of Weaned Dairy Heifers, Tana Shea Dennis

Open Access Dissertations

Well-developed replacement heifers provide a central foundation for the continued success of the dairy industry. Emphasis on improving pre-weaned calf nutrition has predominated in the industry, but opportunities exist to improve post-weaning heifer nutrition and management. We aimed to evaluate common feed management strategies seen in the industry and their effects on growth, feed efficiency (G:F), and rumen development of calves from birth to 8 mo of age using pen- and individually-fed animal trials. Little information exists regarding post-weaning performance and rumen development of calves fed conventional or high planes of nutrition pre-weaning; therefore, we evaluated two milk replacer feeding …

Identifying Genetic Factors In Streptococcus Uberis That Enable Evasion Of The Host Immune Response, Alexis Christine Burnham

Chancellor’s Honors Program Projects

No abstract provided.

Effects Of Light On Riboflavin And Ascorbic Acid In Freshly Expressed Human Milk, Jimi Francis, Darby Dickton

Health and Kinesiology Faculty Publications and Presentations

Millions of dollars each year is spent funding dairy research to better understand every aspect of milk processing, storage, handling, and shelf life. The dairy industry has shown that in animal milks vitamin C is photo-oxidized when exposed to light, which can cause a cascade of other nutrients that may be affected. Expressed human breast milk has had limited research published, mainly recommendations for storage duration secondary to bacterial growth, with scant research on nutrient quality during handling compared to the animal models. In this study, freshly expressed human milk was placed in containers of varying color/UV sensitivity and exposed …

Implementing Innovative Farm Management Practices On Dairy Farms: A Review Of Feeding Systems, Şeyda Özkan, Julian Hill

Turkish Journal of Veterinary & Animal Sciences

The Australian dairy industry relies primarily on pasture for its feed supply. However, the variability in rainfall negatively affects plant growth, leading to uncertainty in dryland feed supply, especially during periods of high milk price. New feeding (complementary) systems combining perennial ryegrass with another crop and/or pasture species may have the potential to mitigate this seasonal risk and improve productivity and profitability by providing off-season feed. To date, the majority of research studying the integration of alternative crops into pasture-based systems has focused on substitution and utilization of alternative feed sources. There has been little emphasis on the impacts of …

Absorption And Utilization Of Choline And Vitamin B12 In Lactating Dairy Cows Using Different Delivery Methods, Virginia Maria Artegoitia Etcheverry

Doctoral Dissertations

Choline and vitamin B12 are essential nutrients for growth and performances of production animals. However, both nutrients are extensively degraded during digestion in the rumen. This thesis comprised three experiments. First, four cows equipped with a rumen cannula and catheters in the portal vein and a mesenteric artery received a post-ruminal bolus of: 1) cyanocobalamin (CN-CBL) alone (0.1 g) [gram], 2) CN-CBL (0.1 g) + casein (10 g) or 3) CN-CBL (0.1 g) + whey proteins (10 g). After the bolus, blood samples were taken until 24 h [hour] post-bolus. The intestinal absorption of CN-CBL was greater when the vitamin …

Consumers' Salient Beliefs Regarding Dairy Products In The Functional Food Era: A Qualitative Study Using Concepts From The Theory Of Planned Behaviour, Deborah Nolan, Elizabeth Neale, Yasmine Probst, Karen E. Charlton, Linda C. Tapsell

Karen E. Charlton

Background Inadequate consumption of dairy products without appropriate dietary substitution may have deleterious health consequences. Social research reveals the factors that may impede compliance with dietary recommendations. This is particularly important given the recent introduction of functional dairy products. One of the challenges for public health professionals is to demonstrate the efficacy of nutrition education in improving attitudes toward nutrient rich foods. The aim of this study was to explore the salient beliefs of adult weight loss trial participants regarding both traditional and functional dairy products and to compare these with a control group not exposed to nutrition education Methods …

Effect Of Extenders, Postdilution Intervals, And Seasons On Semen Quality In Dairy Goats, Muhammad Subhan Qureshi, Daulat Khan, Anila Mushtaq, Shoaib Sultan Afridi

Turkish Journal of Veterinary & Animal Sciences

The breeding of female dairy goats with good quality sires has been a problem in rural areas and artificial insemination (AI) provides an answer to this issue. To develop an AI model, a total of 9 bucks were purchased from a local market. Semen was collected in an artificial vagina, the libido was noted, and the semen was evaluated for its physical characteristics. The libido, semen volume, mass motility, individual motility, and sperm concentration were 2.94 ± 0.25 (scale of 1-3), 0.79 ± 0.59 mL, 4.34 ± 0.93 (scale of 1-5), 55.01 ± 32.59%, and 1027 ± 406 million spermatozoa/mL, …

Consumers' Salient Beliefs Regarding Dairy Products In The Functional Food Era: A Qualitative Study Using Concepts From The Theory Of Planned Behaviour, Deborah Nolan, Elizabeth Neale, Yasmine Probst, Karen E. Charlton, Linda C. Tapsell

L. C. Tapsell

Background Inadequate consumption of dairy products without appropriate dietary substitution may have deleterious health consequences. Social research reveals the factors that may impede compliance with dietary recommendations. This is particularly important given the recent introduction of functional dairy products. One of the challenges for public health professionals is to demonstrate the efficacy of nutrition education in improving attitudes toward nutrient rich foods. The aim of this study was to explore the salient beliefs of adult weight loss trial participants regarding both traditional and functional dairy products and to compare these with a control group not exposed to nutrition education Methods …

The Effect Of Dairy Consumption On Blood Pressure In Mid-Childhood: Caps Cohort Study, A M. Rangan, V L. Flood, G Denyer, J G. Ayer, K L. Webb, G B. Marks, D S. Celermajer, Tim Gill

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background/objectives: It has been postulated that higher dairy consumption may affect blood pressure regulation. The aim of this study was to examine the association between dairy consumption and blood pressure in mid-childhood. Methods: Subjects (n=335) were participants of a birth cohort at high risk of asthma withinformation on diet at 18 months and blood pressure at 8 years. Multivariate analyses were used to assess the association of dairy consumption (serves) and micronutrient intakes (mg) at 18 m with blood pressure at 8 y. In a subgroup of children (n=201), dietary intake was measured at age 18 m and 9 y …

Effects Of Dairy Products On Crohn's Disease Symptoms Are Influenced By Fat Content And Disease Location But Not Lactose Content Or Disease Activity Status In A New Zealand Population, Deborah Nolan, Linda C. Tapsell, Rong Hu, Dug Yeo Han, Lynnette Ferguson

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background Dairy products have been perceived as having the potential to cause adverse effects in individuals with Crohn’s disease (CD) and are often avoided, potentially increasing the risk of osteoporosis and related morbidity associated with inadequate dietary calcium intake. Objective To evaluate the self-reported effects of dairy products on CD symptoms and to determine whether these effects differed between types of dairy products consumed and disease state or location. Design Secondary analysis of dietary survey and clinical data from participants in the Genes and Diet in Inflammatory Bowel Disease study based in Auckland, New Zealand. Subjects/setting One hundred and sixty-five …

Consumers' Salient Beliefs Regarding Dairy Products In The Functional Food Era: A Qualitative Study Using Concepts From The Theory Of Planned Behaviour, Deborah Nolan, Elizabeth Neale, Yasmine Probst, Karen E. Charlton, Linda C. Tapsell

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background Inadequate consumption of dairy products without appropriate dietary substitution may have deleterious health consequences. Social research reveals the factors that may impede compliance with dietary recommendations. This is particularly important given the recent introduction of functional dairy products. One of the challenges for public health professionals is to demonstrate the efficacy of nutrition education in improving attitudes toward nutrient rich foods. The aim of this study was to explore the salient beliefs of adult weight loss trial participants regarding both traditional and functional dairy products and to compare these with a control group not exposed to nutrition education Methods …

Regulatory Issues And Functional Health Claims For Bioactive Dairy Compounds, P. Roupas, P. G. Williams, C. Margetts

Peter Williams

Dairy foods and ingredients have a natural advantage over new/novel foods, from a regulatory viewpoint, because they are generally considered as “traditional” foods, that is, there is a long history of human consumption. However, the regulatory landscape on adding bioactive ingredients, whether from dairy streams or from non-dairy sources, into dairy foods is rapidly evolving, and the dairy industry will need to be aware of potential regulatory challenges, within the countries they wish to market their products.

Regulatory Issues And Functional Health Claims For Bioactive Dairy Compounds, P. Roupas, P. G. Williams, C. Margetts

Faculty of Health and Behavioural Sciences - Papers (Archive)

Dairy foods and ingredients have a natural advantage over new/novel foods, from a regulatory viewpoint, because they are generally considered as “traditional” foods, that is, there is a long history of human consumption. However, the regulatory landscape on adding bioactive ingredients, whether from dairy streams or from non-dairy sources, into dairy foods is rapidly evolving, and the dairy industry will need to be aware of potential regulatory challenges, within the countries they wish to market their products.

Incidence Of Endemic Diseases In Dairy Herds In Burdur, Konya, And Kırklareli Provinces In Turkey, Cengi̇z Yalçin, Savaş Sariözkan, Ahmet Şener Yildiz, Ayteki̇n Günlü

Turkish Journal of Veterinary & Animal Sciences

A prospective longitudinal observation study was carried out with 150 randomly selected dairy herds from among 1684 Turkish Dairy Breeding Association (TDBA) herds in Burdur, Konya, and Kırklareli provinces. The herds were stratified as small scale (less than 11 milking cows) and medium-large scale (more than 10 milking cows). The survey was conducted between October 2003 and September 2004, and each herd was visited at least once per month. As the weighted average of 3 provinces, the most frequent events were fertility disorders (30.2%) and udder diseases (28.3%), followed by puerperal disorders (18.3%) and locomotor system disorders (10.0%). There was, …

Regulatory Aspects Of Bioactive Dairy Ingredients, P. Roupas, P. G. Williams

Faculty of Health and Behavioural Sciences - Papers (Archive)

Scientific research has identified potential health benefits of many food ingredients. These health-promoting (bioactive) food ingredients may be naturally present in a food, or may be added by manufacturers into foods that do not naturally contain such components. These bioactives have challenged traditional concepts of food fortification and consequently food regulations. Dairy foods and ingredients have significant potential as vehicles for the delivery of such bioactives and health-promoting physiological effects, if regulatory hurdles can be overcome. The regulatory landscape on the addition of bioactive ingredients (from dairy streams and non-dairy sources) into foods is rapidly evolving, and the industry will …

Herd Improvement Service Forges Ahead, M P. Bond

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

Since its establishment three years ago, the Herd Improvement Service has steadily expanded the range of services provided to Western Australian livestock producers. The genetic advancement and improved hers management offered by the service give farmers the ability to use modern technology in the most cost-effective way. There is an increasing realisation amongst farmers that to survive and remain competitive, it is worthwhile to invest in such technology.

The Herd Improvement Service is a statutory corporation which was formed to improve the productivity of the State's livestock enterprises. Most of the organisation's activities have been directed to servicing the dairy …