Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Chickens (3)
- Dairy farming (2)
- Poultry (2)
- American lobster (1)
- Aquaculture (1)
-
- Asian shore crab (1)
- Black ducks (1)
- Broilers (1)
- Dairy cattle (1)
- Dairy processing (1)
- Dissolved oxygen (1)
- Ducklings (1)
- Ducks (1)
- Enzymes (1)
- Fishers (1)
- Mourning doves (1)
- Newcastle disease (1)
- Nutrition (1)
- Organic dairy farming (1)
- Predators (1)
- Ring-necked ducks (1)
- Shellfish fisheries (1)
- Towing basins (1)
- Water filtration (1)
- Water purification (1)
- Water reuse (1)
- Waterfowl (1)
Articles 1 - 19 of 19
Full-Text Articles in Animal Sciences
Tb204: Organic Milk Production In Maine: Attributes, Costs, And Returns, Amelia L. Cook, Patrick S. Heacock, George K. Criner, Lisa A. Bragg
Tb204: Organic Milk Production In Maine: Attributes, Costs, And Returns, Amelia L. Cook, Patrick S. Heacock, George K. Criner, Lisa A. Bragg
Technical Bulletins
This report summarizes attributes, costs, and returns for organic dairy farms in Maine that responded to the 2008 dairy cost of production survey. This survey and analysis was conducted by the University of Maine in cooperation with the Maine Milk Commission. This publication reports on data collected over the 2007 production year. Analysis and discussion of the data revolve around four categories. The first category averages all 30 organic farms to create a statewide group. The authors then broke these 30 farms into three size groups (small, medium, and large) based on the number of cows on each farm. There …
Tb194: Hemisgrapsus Sanguineus (Asian Shore Crab) As Predator Of Juvenile Homarus Americanus (American Lobster), Anna Demeo, John G. Riley
Tb194: Hemisgrapsus Sanguineus (Asian Shore Crab) As Predator Of Juvenile Homarus Americanus (American Lobster), Anna Demeo, John G. Riley
Technical Bulletins
Hemigrapsus sanguineus, commonly known as the Asian shore crab, was first discovered on the east coast of the United States in New Jersey in 1988. The spread of this invasive crab has been rapid, and it is now abundant along a large portion of the mid-Atlantic and southern New England coast. Further, an invasion of H. sanguineus into New Hampshire and southern Maine is in its preliminary stages. The introduction of this crab to North America could potentially affect a variety of native species. Numerous studies have examined the predation of H. sanguineus on blue mussels, snails, and other bivalves. …
Tb193: The Cost Of Producing Milk In Maine: Results From The 2005 Dairy Cost Of Production Survey, Lisa A. Bragg, Timothy J. Dalton
Tb193: The Cost Of Producing Milk In Maine: Results From The 2005 Dairy Cost Of Production Survey, Lisa A. Bragg, Timothy J. Dalton
Technical Bulletins
This report summarizes the results of the 2005 Dairy Cost of Production survey implemented by The University of Maine and the Maine Milk Commission. This study summarizes data collected over the 2004 production year. Funding for this report was provided by the Maine Milk Commission. Analysis and discussion of the data in this report centers on an industry-wide group and three smaller sets called clusters. Cluster analysis attempts to identify groups of farms from within the sample of survey respondents that have relatively homogenous characteristics.
Tb188: Tow Tank Scale Modeling In The Design Of Tidal Upwellers, John Riley
Tb188: Tow Tank Scale Modeling In The Design Of Tidal Upwellers, John Riley
Technical Bulletins
In February 1999 an ad hoc committee of representatives of Maine’s shellfish aquaculture industry, The University of Maine, and the Maine Sea Grant College Program met to discuss priorities for research to improve the performance of tidally powered shellfish upwellers. Information from this meeting was incorporated into a proposal submitted later in the year to the Maine Aquaculture Innovation Center. The project was funded and work began in January 2000. The project involved engineering analysis, field measurements of shellfish seed properties, and scale-model testing conducted in the university wave/towing tank with the overall goal of optimizing the design of a …
Tb189: The Cost Of Producing Milk In Maine: Results From The 2002 Dairy Cost Of Production Survey, Timothy J. Dalton, Lisa A. Bragg
Tb189: The Cost Of Producing Milk In Maine: Results From The 2002 Dairy Cost Of Production Survey, Timothy J. Dalton, Lisa A. Bragg
Technical Bulletins
This report summarizes the results of the 2002 Dairy Cost of Production survey implemented by The University of Maine and the Maine Milk Commission. Funding for this report was provided by the Maine Milk Commission. Analysis and discussion of the data in this report centers on four major groups called clusters. Cluster analysis attempts to identify groups of farms from within the sample of survey respondents that have relatively homogenous characteristics.
Tb181: 2000 Milk Processing Costs In Maine, Timothy J. Dalton, George K. Criner, John Halloran
Tb181: 2000 Milk Processing Costs In Maine, Timothy J. Dalton, George K. Criner, John Halloran
Technical Bulletins
The objective of this study is to provide an estimate of the theoretically lowest achievable costs of processing and distributing milk in Maine. This processing and distribution margin (referred hence as "margin") is estimated for a state-of-the-art processing plant assumed to be located in the Portland, Maine, area. The plant is assumed to produce and distribute a line of products including white milk, chocolate milk, orange juice, and other fruit drinks, and to distribute additional purchased products such as cheeses and yogurts. This report will present information for four plants to better study the impact of plant size and production …
Tb179: Oxygen Supplementation For Aquaculture Biofilters, John Riley, Daniel Hagopian
Tb179: Oxygen Supplementation For Aquaculture Biofilters, John Riley, Daniel Hagopian
Technical Bulletins
There is conflicting evidence concerning the negative effects of high concentrations of dissolved oxygen on nitrifying bacteria. This project was developed to determine what happens to an established slime layer in a fixed-film, flow-through bio-filter, exposed to oxygen supersaturation. Specific objectives were to determine qualitatively and quantitatively whether the treatment is actually beneficial after acclimation, and whether rapid fluctuations in DO are detrimental to an acclimated culture.
Tb177: Evaluation Of An Experimental Filter Medium For Water Re-Use Systems, John Riley, David Cole, Robert Bayer
Tb177: Evaluation Of An Experimental Filter Medium For Water Re-Use Systems, John Riley, David Cole, Robert Bayer
Technical Bulletins
This report describes the development and testing of a new material for use as a filter medium in recirculating aquaculture systems and other water quality control situations. The material consists of a combination of activated carbon and a hydrophilic urethane foam in a homogeneous matrix. Its physical properties relevant to filtration were determined. It was then tested for its ability to remove various dissolved organic compounds and inorganic nitrogenous compounds in the form of a synthetic waste-water containing ammonia and nitrite. Finally it was subjected to long-term use in the biofilter of a fish culture system. It proved to be …
Tb157: Capture, Care, And Handling Of Fishers (Martes Pennanti), Herbert C. Frost, William B. Krohn
Tb157: Capture, Care, And Handling Of Fishers (Martes Pennanti), Herbert C. Frost, William B. Krohn
Technical Bulletins
These authors brought fishers into captivity to assess the reproductive cycles of both sexes and to monitor females with known reproductive histories. In addition, kits born in captivity were raised to sexual maturity to monitor growth and development. Here they report on the rates at which fishers were caught, the care and maintenance of fishers while in captivity, and the handling procedures used with 44 fishers taken from the wild and 38 fishers conceived in the wild and born in captivity, during the period from 1990 to 1993.
Tb132: An Annotated Bibliography Of Predator Research In Maine, 1974-1988, Stephen M. Arthur, William B. Krohn
Tb132: An Annotated Bibliography Of Predator Research In Maine, 1974-1988, Stephen M. Arthur, William B. Krohn
Technical Bulletins
From 1974 to 1988, graduate students (13 M.S. and 5 Ph.D.) and faculty members from the University of Maine conducted a series of studies regarding the ecology of coyotes, red foxes, bobcats, pine martens, fishers, otters, and their prey. This research was reported in 67 theses, journal articles, or other reports, which are abstracted here. An introductory section summarizes the major findings.
Tb117: Techniques For Using The Growth And Behavior Of Imprinted Ducklings To Evaluate Habitat Quality, Malcolm L. Hunter Jr., Jack W. Witham, Jody Jones
Tb117: Techniques For Using The Growth And Behavior Of Imprinted Ducklings To Evaluate Habitat Quality, Malcolm L. Hunter Jr., Jack W. Witham, Jody Jones
Technical Bulletins
We developed a technique for evaluating duckling habitat quality that is based on two assumptions. In good habitat young birds (1) grow rapidly and thus are better able t o survive stresses such as inclement weather, and (2) spend relatively less time moving about in search of food and more time resting and thus are less conspicuous to predators. We imprinted artificially incubated and hatched ducklings by being present at the time of hatching; i.e., the ducklings thought we were their mother. Ducklings were split into broods and placed on ponds where their growth was measured and their behavior monitored …
Tb89: Motor And Elective Activity Of The Duodenum Of Broilers, C. Mba-Mezoui, F. H. Bird, C. B. Chawan
Tb89: Motor And Elective Activity Of The Duodenum Of Broilers, C. Mba-Mezoui, F. H. Bird, C. B. Chawan
Technical Bulletins
Recordings of pressure changes and electrical activity from the proximal small intestine of seven to eight-week-old unanesthetized chickens were made with chronically implanted transducers. The recordings were used to quantitate and determine the relationships among basic electric rhythm (BER), spike potentials (SP), and intestinal contractions (IC) of the duodenum. The omnipresence of the BER was demonstrated. SP were recorded whenever IC were detected. SP numbers and amplitudes were directly related to the strength of IC. Acetylcholine caused a general increase in the number and amplitude of both SP and IC. Epinephrine completely abolished both SP and IC. The results suggest …
Tb86: Waterfowl Populations As Related To Habitat Changes In Bog Wetlands Of The Moosehorn National Wildlife Refuge, Stewart I. Fefer
Tb86: Waterfowl Populations As Related To Habitat Changes In Bog Wetlands Of The Moosehorn National Wildlife Refuge, Stewart I. Fefer
Technical Bulletins
The response of waterfowl populations to marsh management on the Moosehorn National Wildlife Refuge in eastern Maine was evaluated. The objectives were (1) to estimate populations of breeding waterfowl in 1974 and 1975 and compare these numbers with trends of the past 30 years and (2) to interpret these trends in relation to vegetative and other environmental changes that have occurred. The long-term trend of black duck numbers on the primary study areas was downward. Fluctuating water levels, advanced plant succession and a decrease in the number of open-water areas were factors contributing to the decline. Breeding populations of ring-necked …
Tb78: Food Habits And Body Measurements Of Mourning Doves In Southwestern Maine, Sanford D. Schemnitz
Tb78: Food Habits And Body Measurements Of Mourning Doves In Southwestern Maine, Sanford D. Schemnitz
Technical Bulletins
This study presents the first published information on the food in the crops of Maine mourning doves collected at the Western Maine Forest Nursery at Fryeburg. The main food was conifer seed (54. 6 percent volume). Red and white pine totaled 37. 6 percent of foods consumed. Corn and goosefoot comprised an additional 30.9 percent by volume in the diet. The heavy use of conifer seed by doves in a nursery suggests the need to treat the seed with a repellent. Maine doves were longer in total length than doves from New York and several southern states. The sex ratio …
Tb72: Selection For Type And Milk Production In Dairy Cattle, Howard C. Dickey
Tb72: Selection For Type And Milk Production In Dairy Cattle, Howard C. Dickey
Technical Bulletins
This publication discusses milk production in dairy cattle, then explains type improvement, then describes one can select for both type and production with the aid of a chart.
Tb44: The Fluorescent Antibody Technique In The Diagnosis Of Avian Encephalomyelitis, Louis Van Der Heide
Tb44: The Fluorescent Antibody Technique In The Diagnosis Of Avian Encephalomyelitis, Louis Van Der Heide
Technical Bulletins
This publication provides an overview of avian encephalomyelitis including a description of the disease and its geographical distribution. The authors also discuss various methods for diagnosing the disease and losses in egg production during outbreaks.
Tb42: The Mycotoxic Effects Of Fungi Isolated From Poultry Feed Ingredients: The Response Of Ducklings And Performance Of Commercial Broiler Chickens Fed Experimentally Infected Corn Diets, Elizabeth S. Barden, H. L. Chute, D. C. O'Meara, Hilda T. Wheelwright
Tb42: The Mycotoxic Effects Of Fungi Isolated From Poultry Feed Ingredients: The Response Of Ducklings And Performance Of Commercial Broiler Chickens Fed Experimentally Infected Corn Diets, Elizabeth S. Barden, H. L. Chute, D. C. O'Meara, Hilda T. Wheelwright
Technical Bulletins
The present work, planned to investigate the possibility of mycotoxins occurring in feed ingredients fed to poultry in Maine, was designed with the following objectives: (1) to isolate fungi from poultry feed ingredients; (2) to grow the m separately on corn (the carbohydrate source of poultry rations) for later mixing into the diets; (3) to test the variously infected lots of this corn substrate for mycotoxicity by feeding ducklings, a bioindicator for toxins; (4) to determine the effects of aflatoxin and other mycotoxins from feed ingredients, on the performance of commercial broiler chickens; and (5) to appraise this response as …
Tb8: Enzyme Levels In Birds, Lois S. Mcdaniel, Helen A. Dempsey, Harold L. Chute
Tb8: Enzyme Levels In Birds, Lois S. Mcdaniel, Helen A. Dempsey, Harold L. Chute
Technical Bulletins
This technical bulletin describes a research project relating to enzymes and chickens during health and disease. This project was started in 1957, and with the aid of a National Institutes of Health grant #C-4957 in 1959 the work was accelerated. This bulletin covers some of the work that has not been published and at also summarizes some of the literature relating to enzyme activity levels in birds.
Tb9: Newcastle Disease Virus Activity And Volume Of Amniotic Allantoic Fluid In Chicken Embryos From Flocks With Different Vaccination Histories, Harold L. Chute, D. C. O'Meara, D. B. Reardon, H. T. Wheelwright
Tb9: Newcastle Disease Virus Activity And Volume Of Amniotic Allantoic Fluid In Chicken Embryos From Flocks With Different Vaccination Histories, Harold L. Chute, D. C. O'Meara, D. B. Reardon, H. T. Wheelwright
Technical Bulletins
Breeding hens of similar age, 9 to 11 months old, were selected from four flocks, each with a different vaccination history. One flock received no vaccinations, the second received spray and wing web Newcastle disease (ND) vaccine, the third was given three ND dust vaccinations, and the fourth received two dead ND viral vaccinations.