Animal Sciences Commons^™

Limestone Solubility: What Can You Do About It?, Wenting Li, Katie Hilton, Franco Mussini, Janet Remus

Proceedings of the Arkansas Nutrition Conference

Calcium (Ca) is essential for bone development mineralisation, as well as for eggshell formation, muscle and neural functions. Depending on the type of diets (veggie vs. non-veggie), species (turkey, chicken, duck), and age of animal (young vs. adult), limestone can contribute up to 95% total Ca in the final diet, with more Ca from limestone for younger animals with veggie diet. Despite the significant contribution of limestone to total diet Ca levels, the bioavailability variation of limestone Ca is rarely considered. Phosphorus (P) is a limited resource and is the third most costly ingredient in poultry …

2021 (33rd) Report Of The Nou Records Committee, Mark A. Brogie

Nebraska Bird Review

The functions and methods of the Nebraska Ornithologists’ Union Records Committee (NOURC) are described in its bylaws (NOURC 2010). The committee’s purpose is to provide a procedure for documenting unusual bird sightings and to establish a list of all documented birds for Nebraska. Species for which the NOURC seeks documentation (NOURC Review List) can be found at the NOU website www.NOUbirds.org. Starting in 2020, the NOURC decided to deal mainly with those species deemed as Accidental on the “Official List of the Birds of Nebraska”. Casual species and out-of- range species are now summarized in the “Seasonal Reports” of the …

Summer Field Report, June-July 2022, W. Ross Silcock

Nebraska Bird Review

As always, the summer season produces surprises, and this year was no exception. Surprises fall into different categories, though: genuine statewide rarities, within-state distributional rarities, and, of course in summer, nesting records at new locations, population notes, late and early dates and high numbers, increased knowledge about subspecies in the state, and miscellaneous things of interest. These categories are covered separately below after some housekeeping comments.

“Genuine statewide rarities” were led by the first state record Limpkin found by Karen Kader and seen by many in Sarpy Co. Potential 2nd or so state records were a Mexican Duck in Scotts …

The Nebraska Bird Review. Volume 90 September 2022 Number 3

Nebraska Bird Review

Summer Field Report, June - July 2022 by W. Ross Silcock ….90

2021 (33rd) Report of the NOU Records Committee by Mark A. Brogie … 113

Subscription and Organization Information … 123

Evaluation Of A Threonine Fermentation Product As A Digestible Threonine Source In Broilers, D. T. Lee, J. T. Lee, A. J. Ashworth, M. T. Kidd, A. Mauromostakos, S. J. Rochell

Poultry Science Faculty Publications and Presentations

In the present experiment, a Thr fermentation product (FP) (75% minimum digestible Thr) was evaluated as a replacement for crystalline L-Thr (98.5% minimum digestible Thr) as a source of digestible Thr and other nutrients to support broiler performance (0–48 d) and processing characteristics. Five phase-fed diets included 1) a positive control (PC) diet containing L-Met, L-Lys•HCl, and L-Thr, 2) a reduced protein control (RPC) diet with added L-Val, L-Ile, and L-Arg, 3) a negative control (NC) identical to the RPC except that cellulose was added at the expense of L-Thr, 4) a …

Subscription And Organization Information

Nebraska Bird Review

logists’ Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $25 in the United States and $35 in all other countries, payable in advance. Single copies are $7 each, postpaid, in the United States and $9 elsewhere. Send orders for back issues to Anita Breckbill, NOU Librarian, c/o Music Library, WMB 30, University of Nebraska, Lincoln, NE 68588-0101 (or at the email address listed below). Memberships in the NOU (on a calendar-year basis only): Active Household (one or more people) $25; Sustaining Household (one or …

Foraging Habitat Selection Of Shrubland Bird Community In Tropical Dry Forest, Anant Deshwal, Steven L. Stephenson, Pooja Panwar, Brett A. Degregorio, Ragupathy Kannan, John D. Willson

Biological Sciences Faculty Publications and Presentations

Habitat loss due to increasing anthropogenic disturbance is the major driver for bird population declines across the globe. Within the Eastern Ghats of India, shrubland bird communities are threatened by shrinking of suitable habitats due to increased anthropogenic disturbance and climate change. The development of an effective habitat management strategy is hampered by the absence of data for this bird community. To address this knowledge gap, we examined foraging sites for 14 shrubland bird species, including three declining species, in three study areas representing the shrubland type of forest community in the Eastern Ghats. We recorded microhabitat features within an …

Effects Of The In Ovo Administration Of The Poulvac E. Coli Vaccine In Layer Hatching Eggs On Hatchability, Hatchling Characteristics, And Early Posthatch Chick Performance, Lauren L. Lindsey

Theses and Dissertations

Avian Pathogenic E. coli can lead to infections in laying hens and wide-spread economic problems in the table egg industry. A vaccine widely used to combat APEC is the Poulvac E. coli vaccine, which is normally applied via spray vaccination. Application of this vaccine via in ovo injection has not been examined. The purpose of this series of studies was to determine the effects of injecting 50 μL of different dosages of the PECV into Hy-Line W-36 layer hatching eggs on the hatchability and characteristics of the hatchlings, and on the livability and characteristics of the chicks through 21 d …

Using Poultry To Enhance Food Security In Stann Creek, Belize, Emily Spatz

Poultry Science Undergraduate Honors Theses

Food insecurity is a growing issue in developing and developed countries alike, and in countries like Belize, the prevalence of hunger has soared in recent years. Not having access to diets with sufficient calories and nutrients leads to a host of developmental issues, including stunting and cognitive delays. The purpose of this work was to create an all-encompassing manual for small-scale broiler production, with the intention of another honors student overseeing the implementation of the ideas set forth in the manual, in order to provide nourishment for the students and staff of a school in Belize. After determining that the …

Recruitment, Cost Indexes, And Management Of Box-Nesting Wood Ducks In South Carolina And North Carolina, Emily Miller

All Theses

The wood duck (Aix sponsa) has experienced one of the most significant declines and recoveries among species of North American waterfowl (Anatidae). With enactment of the Migratory Bird Treaty Act (1918) and installation of hundreds of thousands of artificial nest structures for this cavity-nesting species in North America, wood duck populations have recovered and remain a sustainable harvested resource. However, long-term research on box-nesting wood ducks conducted at the Savannah River Ecology Laboratory, Aiken, South Carolina, has revealed uncertainty as to whether recruitment rates of yearling females from natal box-nesting populations are self-sustaining without immigration of hens from …

Validation Of Whole Genome Resequencing For Mapping The Genetics Of Ascites In Broilers And Viral Susceptibility In Layers, Katherine Pepper Lee

Graduate Theses and Dissertations

This dissertation focused on the efficacy and validity of whole genome resequencing (WGR) for fine mapping genetic determinants of particular traits in a given organism. Previously, our research group used WGR to identify haplotype blocks of single nucleotide polymorphisms associated with ascites resistance with some as strong candidates for use in marker-assisted selection (MAS). Chapter 2 discusses the completion of a MAS project through evaluation of ascites incidence as well as production traits of economic value to poultry producers. Thus, the MAS project also covered viability of this methodology in the industry. The MAS significantly reduced ascites incidence in broilers …

Histomonosis In Turkeys – Factors Influencing Transmission, Pathogenesis, And The Search For Prophylactic Or Therapeutic Compounds, Thainá Landim De Barros

Graduate Theses and Dissertations

The incidence of histomonosis has been increasing in poultry since the ban of prophylactic and therapeutic compounds. Histomonosis is caused by the protozoa Histomonas meleagridis. The objective of this dissertation was to investigate factors impacting the pathogenesis and transmission of histomonosis and to evaluate compounds that could potentially prevent or reduce the severity of histomonosis in turkeys. In the first study, the effect of sodium chlorate and sodium nitrate on reducing histomonads growth was tested in vitro and added to a basal turkey diet. A decrease in the growth of histomonads in vitro was observed, but no in vivo effect …

The Role Of Microbiota On Campylobacter Jejuni Colonization And Growth Performance In Broiler Chickens, Ayidh Almansour

Graduate Theses and Dissertations

The successful poultry production at modern era comes from the vertical integratedindustrialization, which has fundamentally changed how animals have been living for millions of years. Antimicrobial growth promoters have been used to sustain the efficient industrialized animal production, driving antimicrobial overuse and resistance. Because of the increasing pressure from consumer’s concerns and government regulations, it is urgent to develop antimicrobial free alternatives as growth promoters in poultry production, but few effective antimicrobial alternatives are currently available. Campylobacter jejuni is one of the worldwide prevalent foodborne bacterial pathogens mainly transmitted from poultry. However, few mechanisms are available on why C. jejuni …

Identification Of Genomic, Proteomic, And Metabolomic Signatures Associated With Pulmonary Hypertension Syndrome In Broilers, Duaa Almansaf

Graduate Theses and Dissertations

The present dissertation contains a collection of studies that examine the genomic, proteomic, and metabolomic association to pulmonary hypertension or ascites phenotype in fast-growing broilers. Pulmonary hypertension is a multifactorial metabolic disease influenced by physiological, environmental, and nutritional factors. It is characterized by a number of structural changes including, thrombosis and adverse pulmonary vascular remodeling. Thus, the atrial pressure is increased, and the right ventricle becomes hypertrophied, resulting in heart failure and the death of the bird. Pulmonary hypertension or ascites is a global problem that has negatively impacted the economy. The increased mortality rate of broilers (25%) is estimated …

Intestinal Microbiota Analysis Of Broiler Chickens Under Necrotic Enteritis Challenge And Tributyrin Supplementation, Taylor Nicole Mckinney

Graduate Theses and Dissertations

Poultry is a staple protein source for most of the planet. Until recently, antibiotic growth promoters (AGPs) were used to prevent illnesses in commercial chicken production. Currently, this is not possible due to regulations and consumer concern, but without such a preventative, diseases like necrotic enteritis (NE) have reemerged, posing a threat to bird health, and ultimately, our food source. Necrotic enteritis is a severe gastrointestinal disease caused by the gram-positive pathogen, Clostridium perfringens. Clinical features of this disease are diarrhea, intestinal lesions, and death, with a high transmission rate. In a subclinical form, growth performance is diminished and is …

The Role Of Temperature Variation On Macrophage Physiology And Function In Vitro In Mice, Chicken, And Fish, Intisar Abdullah Hassan

Graduate Theses and Dissertations

Fever is an essential component of the immune response. Baseline body temperatures vary in different species, and fever represents increased temperature over baseline. Fever initiates and enhances immune responses as well as creates an environment in which the body has advantages over pathogens. Macrophages are often the first line of cells that come in contact with pathogens, asthey reside in and traffic through tissues. They are important for their engulfment of pathogens that results in the digestion of the pathogen, and they also produce nitric oxide and cytokines that contribute to immune responses in a variety of ways, including initiating …

Chondronecrosis With Osteomyelitis In Broilers: Bacterial Species Involvement And Influence Of Probiotics And Synbiotics, Amer Abdullah Hasan

Graduate Theses and Dissertations

Since 1945, the market for broiler production has evolved from a collection of smallholder poultry farms into an industry worth billions of dollars. Poultry production has not gone without challenges. Lameness in young broilers is presently a serious issue in the poultry industry for reasons of animal health and welfare, as well as significant lost production and revenue. Bacterial chondronecrosis with osteomyelitis (BCO) is a major form of lameness in broilers. This dissertation contains information about (i) the influence of Staphylococcus agnetis, Staphylococcus saprophyticus, Staphylococcus epidermidis and Enterococcus faecalis on inducing BCO lameness, (ii) evaluation of of probiotics for reducing …

Bacterial Chondronecrosis With Osteomyelitis In Broilers: Genomics, Phylogenomics, And Methods To Detect Specific Pathogens During Outbreaks., Abdulkarim Abdulaziz A. Shwani

Graduate Theses and Dissertations

Lameness is a major issue in animal welfare and the broiler industry. Bacterial chondronecrosis with osteomyelitis (BCO) is one of the main causes of lameness. Many staphylococcal species, including Staphylococcus agnetis isolate 908, have been isolated from the bones and blood of lame broilers at the University of Arkansas. Staphylococcus agnetis is a coagulase-variable, Gram-positive bacterial species that has been previously associated with subclinical or mild clinical cases of mastitis in dairy cattle. The annotated complete genome of hypervirulent strain 908 was published at NCBI. In this study, it has been compared to nine genomes we assembled for hypervirulent isolates …

A Review Of Heat Stress In Chickens. Part Ii: Insights Into Protein And Energy Utilization And Feeding, Jean-Remi Teyssier, Giorgio Brugaletta, Federico Sirri, Sami Dridi, Samuel J. Rochell

Poultry Science Faculty Publications and Presentations

With the growing global demand for animal protein and rising temperatures caused by climate change, heat stress (HS) is one of the main emerging environmental challenges for the poultry industry. Commercially-reared birds are particularly sensitive to hot temperatures, so adopting production systems that mitigate the adverse effects of HS on bird performance is essential and requires a holistic approach. Feeding and nutrition can play important roles in limiting the heat load on birds; therefore, this review aims to describe the effects of HS on feed intake (FI) and nutrient digestibility and to highlight feeding strategies and nutritional solutions to potentially …

A Comparative Study Of The Effects Of Microalgae On Poultry Production, Taylor Kaitlyn O'Lear Reid

Master's Theses

Research has shown Spirulina to be a viable feedstuff in poultry production. Other species of microalgae are being studied to determine their effects on poultry production. This project compared four microalgaes: Hydrodictyon, Vaucheria, Uronema, and Spirulina and was broken down into three trials. The first experiment investigated the digestibility of an algae species, Spirulina, in broiler chicken diets. Eighty, 25-day-old Ross 708 broiler chicks were sorted into 20 metabolism cages and received one of two diets: Control Diet or Test Diet (75% basal diet + 25% Spirulina). The apparent ileal amino acid digestibility (AIAAD) of lysine, methionine, cysteine, threonine, isoleucine, …

Subscription And Organization Information (June 2022)

Nebraska Bird Review

The Nebraska Bird Review is published quarterly by the Nebraska Ornithologists’ Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $25 in the United States and $35 in all other countries, payable in advance. Single copies are $7 each, postpaid, in the United States and $9 elsewhere. Send orders for back issues to Anita Breckbill, NOU Librarian, c/o Music Library, WMB 30, University of Nebraska, Lincoln, NE 68588-0101 (or at the email address listed below). Memberships in the NOU (on a calendar-year basis only): Active …

Nou Spring Field Days And Annual Meeting, Gering, May 20-22, 2022, Janis Paseka

Nebraska Bird Review

The NOU Annual Meeting and Spring Field Days, organized by Kathy DeLara, Robin Harding, Jan Johnson, Alice Kenitz and Ruthie Stearns, was held in Gering on May 20-22, 2022, with 64 in attendance. This was the first time the organization had been able to get together since the meeting in Imperial in September of 2019. Our spring and fall meetings in 2020 and 2021 were cancelled due to the COVID-19 pandemic. Our meetings and meals took place in the Gering Civic Center. The weekend weather varied from cool and sunny to windy, snowy, or rainy, but the total species list …

Spring Field Report, March-May 2022, W. Ross Silcock

Nebraska Bird Review

This spring there was a large number of interesting reports generated by active field observers, particularly in the west, where our knowledge continues to be broadened in all aspects. The main takeaway this spring was the inordinate plethora of species that matched or exceeded early arrival dates listed in BONO. There were no fewer than 70 species in this category, involving most families and genera, suggesting some overall influence on migration timing. Perhaps exceptions to these early arrivals were some lingering waterfowl and gulls although terns arrived early. Fully 50 of the early arrivers were passerines, notably including nine species …

Rare Dark American Kestrel – Melanistic Or Sooty?, Joseph A. Gubanyi, Joel Rathe, Camden Sesna

Nebraska Bird Review

On April 13 in Seward County, we noticed a dark bird flying relatively low over fields east of Seward near 224th and Bluff Rd. Initially, because of its size, dark coloration and pointed wingtips, we were unsure of its identification and followed the bird to get better looks and identify it. We were able to observe and photograph the bird perched (Figure 1). We also observed the bird hovering and diving to the ground multiple times in search of prey. After better looks, based on size, wing shape, hooked beak, claws, and behavior (repeated hovering over field), we concluded the …

Remembering Lanny Randolph, William Flack

Nebraska Bird Review

Nebraska's birding community suffered a great loss on June 17, 2022, with the death of Lanny Randolph, an enthusiastic birder and a good friend to all of us. ... Lanny ... resolutely continued birding. In May 2022, he was able to attend the NOU meeting in Gering, and to see many of his longtime friends for the first time since the COVID pandemic. But a month later, on June 17, he was taken from us. Lanny's no longer physically present among us. But for those of us who knew him, he'll always be there in our memories, an invisible presence …

The Nebraska Bird Review Volume 90 Number 2, June 2022

Nebraska Bird Review

Spring Field Report, March - May 2022, by W. Ross Silcock ….46

Rare Dark American Kestrel – Melanistic or Sooty?, by Joseph Gubanyi, Joel Rathe, Camden Sesna …. 71

Remembering Rosalind Morris …. 76

Remembering Lanny Randolph by William Flack … 77

NOU Spring field Days and Annual Meeting in Gering, May 20-22, 2022 ….78

Subscription and Organization Information …. 87

Vaccines Using Clostridium Perfringens Sporulation Proteins Reduce Necrotic Enteritis In Chickens, Ying Fu, Mohit Bansal, Tahrir Jatli Alenezi, Ayidh Almansour, Hong Wang, Xiaolun Sun

Poultry Science Faculty Publications and Presentations

Clostridium perfringens is the prevalent enteric pathogen in humans and animals including chickens, and it remains largely elusive on the mechanism of C. perfringens-induced enteritis because of limited animal models available. In this study, we investigated the role of C. perfringens sporulation proteins as vaccine candidates in chickens to reduce necrotic enteritis (NE). C. perfringens soluble proteins of vegetative cells (CP-super1 and CP-super2) and spores (CP-spor-super1 and CP-spor-super2) were prepared, and cell and chicken experiments were conducted. We found that deoxycholic acid reduced C. perfringens invasion and sporulation using the Eimeria maxima and C. perfringens co-infection necrotic enteritis (NE) …

Titration Of Dietary Isoleucine And Evaluation Of Branched-Chain Amino Acid Levels In Female Cobb 500 Broilers During A 22-To 42-Day Finisher Period, C. W. Maynard, G. J. Mullenix, C. J. Maynard, S. C. Wells-Crafton, J. T. Lee, S. K. Rao, L. D. Butler, S. K. Orlowski, M. T. Kidd

Poultry Science Faculty Publications and Presentations

Recent research into the branched-chain amino acids has indicated that broiler responses to dietary isoleucine may vary from classic data. Current isoleucine data has focused on male broilers leaving a gap in the literature for female data. An experiment was conducted to determine the isoleucine requirements for a 22 to 42 day finisher period in Cobb MV & POUND; 500 female broilers. A basal diet was formulated to contain dietary isoleucine, valine, and leucine to lysine ratios of 56, 78, and 135, respectively, and graded amounts of L-isoleucine were added to achieve isoleucine to lysine ratios of 56, 59, 62, …

Remembering Rosalind Morris

Nebraska Bird Review

Longtime NOU member Mary Rosalind Morris passed away in Lincoln on March 26, 2022, at the age of 101. ... Her membership in the NOU spanned decades, and she held the offices of vice president (1960), president (1975), librarian (1988-1989) and NBR editor (1992-1997). She was also a member of the Friends of Wilderness Park, Lincoln Naturalist Club, Wachiska Audubon, and the Nature Conservancy. For many years while on walks with her dog she picked up litter in Lincoln parks and on campus and received several environmental stewardship awards for her efforts. She is remembered by those who knew her …

Interactions Of The Branched-Chain Amino Acids. 2. Practical Adjustments In Valine And Isoleucine, C. W. Maynard, G. J. Mullenix, C. J. Maynard, J. T. Lee, S. K. Rao, L. D. Butler, S. K. Orlowski, M. T. Kidd

Poultry Science Faculty Publications and Presentations

Reductions in dietary crude protein have potentially allowed for the occurrence of branched chain amino acid antagonism which can negatively influence live performance and carcass traits. Therefore, 2 factorial studies were conducted with the first experiment evaluating valine and leucine interactions during a 32 to 45 d finisher period, while the second experiment evaluated valine and isoleucine interactions during a 39 to 52 d withdrawal period. Valine, leucine, nor their subsequent interaction influenced broiler live performance or carcass traits in Experiment 1. However, a valine x leucine interaction was observed for average woody breast score and occurrence of scores of …