Animal Sciences Commons^™

Producing A Transgenic Mouse, Michael Hatch, Dr. David Kooyman

Journal of Undergraduate Research

One of the greatest challenges in the world today is providing adequate nutrition for all, particularly in third world nations. One potential way to improve worldwide nutrition is to use transgenic animals to create a better livestock base. Transgenic animals can potentially be bigger, stronger, and better producers of meat and milk than their non-transgenic counterparts. The purpose of this research project was to produce transgenic mice, serving as a model for what could potentially occur with larger mammals with more agricultural value, such as cows or pigs.

Evaluating Dietary Amino Acid Adequacy In Horses Using Isotopic Techniques, Sara L. Tanner

Theses and Dissertations--Animal and Food Sciences

Little is known about amino acid (AA) requirements in horses despite muscle mass accretion being of importance to an athletic species. Isotope methods for determining AA requirements and whole-body protein synthesis (WBPS) had not been previously used in growing horses. The first study herein was the first to apply isotope methods to determine WBPS in growing horses. In the study, weanling colts received two different levels of crude protein. Whole-body protein kinetics indicated that WBPS was greater when the weanlings were fed the diet with a greater crude protein content (P<0.05). The second study sought to determine a lysine requirement for yearling horses using the indicator AA oxidation (IAAO) method. Despite using six dietary levels of lysine; three above and three below the current recommendation, no breakpoint could be determined. Phenylalanine kinetics were not affected by lysine level (P>0.05), but plasma lysine increased linearly with lysine intake …

Bioinformatics Analysis Of Transcriptome Dynamics During Growth In Angus Cattle Longissimus Muscle, Sonia J. Moisa, Daniel W. Shike, Daniel E. Graugnard, Sandra L. Rodriquez-Zas, Robin E. Everts, Harris A. Lewin, Dan B. Faulkner, Larry L. Berger, Juan J. Loor

Department of Animal Science: Faculty Publications

Transcriptome dynamics in the longissimus muscle (LM) of young Angus cattle were evaluated at 0, 60, 120, and 220 days from early-weaning. Bioinformatic analysis was performed using the dynamic impact approach (DIA) by means of Kyoto Encyclopedia of Genes and Genomes (KEGG) and Database for Annotation, Visualization and Integrated Discovery (DAVID) databases. Between 0 to 120 days (growing phase) most of the highly-impacted pathways (eg, ascorbate and aldarate metabolism, drug metabolism, cytochrome P450 and Retinol metabolism) were inhibited. The phase between 120 to 220 days (finishing phase) was characterized by the most striking differences with 3,784 differentially expressed genes (DEGs). …

Economic Benefits Of Using Prebiotic And Probiotic Products As Supplements In Stimulation Feeds Administered To Bee Colonies, Silvia Patruica, Ioan Hutu

Turkish Journal of Veterinary & Animal Sciences

Spring stimulation feeding of honeybee colonies (Apis mellifera carpatica) is a very important technique for the encouragement of productive foraging. In addition to improving bee health by creating favorable conditions for the development of a beneficial intestinal bacterial flora, the use of prebiotic and probiotic supplements in the feed promotes good colony development, thus increasing the forager population. This paper presents the results for the economic benefit measured following use of supplements with acidifying substances (acetic and lactic acids) and probiotic products (Enterobiotics and Enterolactis Plus), as well as the synergism between them. A total of 110 bee colonies were …

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 …

Comparative Response Of Different Broiler Genotypes To Dietary Nutrient Levels, Franco Javier Mussini

Graduate Theses and Dissertations

ABSTRACT

Three studies were conducted to evaluate how the broiler has changed over the years due to intense genetic selection. Four different broiler genotypes, one unselected since the 1950's (HER) representing the old meat-type bird and three current strains (Ross 308, Ross 708, and a test product (TY)) were studied. Differences in growth, morphometry, and response in performance and processing yield to different nutrient levels were studied.

Experiment 1 evaluated growth and morphometric analysis. Birds of each strain were killed weekly from day 7 to day 56, necropsied and cut up parts and organs weighed. Measurement of small intestine segments …

The Effect Of Maternal Undernutrition On Muscle Development In The Ovine Fetus*, Berjan Demi̇rtaş, Mukaddes Özcan

Turkish Journal of Veterinary & Animal Sciences

The effect of maternal undernutrition on muscle development of near-term ovine fetuses was studied in 2 experiments. In each experiment, Welsh mountain ewes were randomly assigned to either control (C) or nutrient-restricted (R) groups. In the first experiment, mild maternal undernutrition (85% of daily nutritional requirement (DNR)), and in the second experiment, severe maternal undernutrition (50% of DNR), were imposed between 0 and 70 days of gestation (dg). Controls for both groups were maintained on 100% of their DNR throughout the experiment. In each experiment, ewes were killed at 126 ± 1 dg by an intravenous injection of pentobarbitone. The …

Evaluation Of The Possibility Of Using Oligosaccharide-Free Pea In Japanese Quail Nutrition, Danuta Szczerbinska, Zofia Tarasewicz, Piotr Gulewicz, Danuta Majewska, Marek Ligocki

Turkish Journal of Veterinary & Animal Sciences

In this paper, evaluation of the effect of processed pea seeds (free of raffinose family oligosaccharides) on the performance traits and the results of reproduction in Japanese quails is presented. A flock of 72 quails was divided into 3 groups consisting of equal numbers of birds (18 females and 6 males). Birds were kept in cages in an environmentally controlled room with a lighting cycle of 17 h of light and 7 h of dark, and they were fed 1 of 3 different diets. Whereas diet 1 served as the control, diet 2 was supplemented with 5% and diet 3 …

Effects Of Dietary Supplementation Of Conjugated Linoleic Acid In Horses, Shannon Headley

All Theses

Conjugated linoleic acid (CLA) reduces inflammation via the inhibition of cyclooxygenase II , thus reducing prostaglandin E2 (PGE2) production. Conjugated linoleic acid has a suggested osteoclast-suppressive role in bone remodeling and osteoarthritis, which are dependent on bone resorptive stimulator PGE2. Bone resorption marker, deoxypyridinoline (DPD), and bone formation marker, bone alkaline phosphatase (BAP), have been modulated by CLA supplementation in other species. Recent research in equine exercise physiology investigated dietary supplementation of polyunsaturated fatty acids as a possible prevention and treatment for osteoarthritis, but CLA supplementation has putative effects on skeletal function or inflammation in horses has not been reported. …

Protein Utilization And Requirements In Broiler Breeders, Ricardo David Ekmay

Graduate Theses and Dissertations

Advances in the genetics of poultry have created unintended consequences to the broiler breeder industry. Excessive weight has been shown to have many negative effects, including double hierarchies, multiple ovulations, and fatty liver. In an effort to curb excessive body weight gain, both the protein requirements and feeding strategies of broiler breeders are being revisited. A series of studies were conducted to determine the protein and amino acid requirements of broiler breeders during the production phase and to determine the interrelationship between protein turnover and egg formation. In the first trial, a 2x3x3 factorial study was conducted to determine the …

Intake, Apparent Digestibility, And Digesta Passage In Leopard Tortoises (Geochelone Pardalis) Fed A Complete, Extruded Feed, Laura Evelyn Lickel

Master's Theses

The influence of feeding juvenile female leopard tortoises (Geochelone pardalis, n=18) a commercially available, complete, extruded feed three (3) or seven days (7) per week on dry matter and digestible energy intake, apparent digestibility of dry matter, organic matter, gross energy and fiber fractions, animal body weight and measurements, digesta transit time, rate of passage, and indigestible fill was evaluated.  Both feeding frequencies are commonly practiced with captive tortoises. When fed 7 compared to 3 days per week, dry matter and digestible energy intake was greater.  Tortoises gained more g BW, but not when adjusted per kg initial …

Effects Of Dietary Fish Oil Replacement By Cottonseed Oil On Growth Performance And Fatty Acid Composition Of Rainbow Trout (Oncorhynchus Mykiss), Müjde Güler, Mustafa Yildiz

Turkish Journal of Veterinary & Animal Sciences

The aim of the present study was to determine the effects of replacing fish oil (FO) with cottonseed oil (CSO), as an alternative plant lipid source in diets for rainbow trout (89.3 ± 1.1 g mean individual weight), on the growth and fatty acid composition of fish. As a control diet, 5 experimental diets were formulated with pure FO and with partial or complete (25%, 50%, 75%, or 100% CSO, respectively) replacement of FO with CSO. The fish were fed 2% of their body weight per day for 60 days at an average water temperature of 10.2 °C. At the …

Equine Nutrition: Forages, Patricia Evans, Scott Mckendrick

All Current Publications

This publication explains differences in legume and grass hay and pasture and feeding suggestions

Proportion Of Calves And Adult Muskoxen, Ovibos Moschatus Killed By Gray Wolves, Canis Lupus, In July On Ellesmere Island, L. David Mech

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Generally Gray Wolves (Canis lupus L., 1758) tend to focus predation on young-of-the-year ungulates during summer, and I hypothesized that wolves preying on Muskoxen (Ovibos moschatus Zimmerman, 1780) in summer would follow that trend. Over 23 July periods observing wolves on Ellesmere Island, Nunavut, Canada, I found that packs of 2-12 adult wolves killed seven calves, one yearling, and five adult muskoxen at distances of 2.9 to 32 km from their current dens and pups. Given a possible bias against finding calves because of their fewer remains, these results do not necessarily refute the hypothesis, but they do …

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 …

Evaluation Of The Effects Of Saka Or Suncho (Viguera Pascensis) In The Feeding Of Guinea Pigs (Cavia Aparea Porcellus) In The Community Of Sococoni, Muñecas Province, La Paz, Boris Rodriguez Peñaranda

Theses and Dissertations

The following work was conducted in the community of Socononi, La Paz, in which we analyzed the effects of three different portions of saka or suncho (viguera pascensis) during the growth, and fattening stages in guinea pigs (cavia aparea porcellus). We used 32 mestizo guinea pigs (improved Peruvian creole breed) weaned 21 days after birth. Four treatments were administrated to the 32 animals (16 males and 16 females), the treatments were the following: (R0) or witness, consisting of corn alone, (R2) consisting of 30% of saka, (R3) consisting of 50% of saka, and (R4) consisting of 70% saka. The variables …

Concentration Of Metabolites And Behavior Of Live Weight In Llamas (Lama Glama) Fed With Natural Grass And Barley During Gestation, Postpartum, And New Born Phases In Turco, Department Of Oruro, Eduardo Ticona Benique

Theses and Dissertations

The llama, a potential socioeconomic resource in the Bolivian highlands, faces serious nutritional deficiencies during the gestational and postpartum stages that negatively affect production. This study was conducted at the Tika Huta Experimental Center in the Llachu community of the Oruro prefecture. Our objectives were to determine metabolite concentration in blood plasma as well as live weight performance of pregnant and postpartum female llamas. Adult and juvenile llamas were fed diets of either plain natural grass or natural grass combined with 0.4 kg of barley hay. In addition, we determined metabolite concentrations in blood plasma and live weight performance of …

Sheep Updates 2008 - Part 2, Meredith L. Sheil, Di Evans, Brown Besier, Tim Scanlon, Andre Martinho De Almeida, Johan Greeff, Tanya Kilminster, John Milton, Chris Oldham, B. L. Mcintyre, Alison Wheatley, John Lucey, Fiona Jones, Nick Costa, Ed Riggall, J. R. L. Hall, Robin Jacob, Dave Pethick, Dave Hopkins, Graham Gardner

Sheep Updates

This session covers eleven papers from different authors: The Sheep Room 1. Analgesia for Surgical Husbandry Procedures in Sheep and Other Livestock, Dr Meredith L. Sheil, Animal Ethics Pty Ltd, Associate Sydney University Faculty of Veterinary Science The Wool Enterprise 2. Unmulsed sheep - implications for chemical use, Di Evans & Brown Besier, Department of Agriculture and Food WA 3. Are Damara and Dorper sheep better adapted than Merinos to nutritional stress? - Growth rates, Tim Scanlon1, Andre Martinho de Almeida2, Johan Greeff1, Tanya Kilminster1, John Milton3, Chris Oldham1, Department of Agriculture and Food WA1, Instituto de Investigacao Cientifica Tropical, …

Precision Of Descriptors For Percent Marrow Fat Content For Whitetailed Deer, Odocoileus Viriginianus, L. David Mech

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Based on 168 records of both verbal descriptors of White-tailed Deer (Odocoileus virginianus) femur-marrow fat and percentage of fat measured later, “gelatinous” served well to distinguish fat < 46% from higher percentages. “Waxy” distinguished fat > 56%.

Effect Of Food Deprivation On The Metabolic Profile Of Llamas (Lama Glama) In The Letanias Experimental Station - Viacha, Edwin Eddy Ali Quisbert

Theses and Dissertations

In the highlands, where regular agriculture and livestock are not viable, raising camelids is the only means of subsistence for rural families. While grazing during the dry season in the high Andean region, llamas face serious nutritional deficiencies due to limited forage availability. This study was done at the experimental station of the Benson Agriculture and Food Institute located in the community of Letanias which is in the municipality of Viacha. The objective was to determine the effect of food deprivation on the metabolic profile of blood plasma (concentration of urea-nitrogen, total protein, albumin, and creatinine) as well as the …

Fruit Quality And Consumption By Songbirds During Autumn Migration, Susan B. Smith, Kathleen H. Mcpherson, Jeffrey M. Backer, Barbara J. Pierce, David W. Podlesak, Scott R. Mcwilliams

Biology Faculty Publications

Seasonal fruits are an important food resource for small songbirds during autumn migration in southern New England. Therefore, conservation and management of important stopover sites used by migrating birds requires knowledge about nutritional requirements of songbirds and nutritional composition of commonly consumed fruits. We measured nutrient composition and energy density of nine common fruits on Block Island, Rhode Island, and conducted a field experiment to estimate consumption rates of three of these fruits by birds during autumn migration. Most common fruits on Block Island contained primarily carbohydrates (41.3–91.2% dry weight), and little protein (2.6–8.6%) and fat (0.9–3.7%), although three contained …

Sheep Updates 2007 - Part 1, Richard Gunner, Anthony Clarke, Kevin Bell, Hugh Dove, H. M. Burrow, Kevin Goss

Sheep Updates

This session covers six papers from different authors:

PLENARY

1. Life beyond the farmgate - the meat perspective, Richard Gunner – Principal:- Richard Gunner’s Fine Meats

2. Do you need to worry about climate change?, Anthony Clark, Centre for Resource and Environmental Studies, Australian National University and Bureau of Rural Sciences.

3. Ruminant nutrition panel session - The impact of nutrition on animal health and welfare, Kevin Bell, School of Veterinary and Biomedical Studies, Murdoch University

4. Ruminant nutrition panel session - Pasture/animal interactions, Hugh Dove, Chief Research Scientist, CSIRO Plant Industry

5. Precision Cattle Breeding for …

Sheep Updates 2007 - Part 5, Bindi Murray, John Karlsson, Johan Greeff, Carolina Viñoles Gil, B. L. Paganoni, K. M. M. Glover, J. T. B. Milton, G. B. Martin, Hugh Dove, Bill Mckiernan, John Wilkins, Paul Greenwood, Linda Cafe

Sheep Updates

This session covers six papers from different authors:

GENETIC IMPROVEMENT

1. Breech Strike Resistance: Selecting for resistance traits reduces breech strike, Bindi Murray, John Karlsson, Johan Greeff, Department of Agriculture and Food, Western Australia

2. Breeding Merino Sheep for Worm Resistance increases profit in a Mediterranean Environment, John Karlsson and Johan Greeff Department of Agriculture and Food, Western Australia

FEEDING

3. Embryo lasses were not increased when Merino ewes that had lost weight were supplemented with lupins, C. Viñoles Gil, B.L. Paganoni, K.M.M. Glover, J.T.B. Milton & G.B. Martin, School of Animal Biology, Faculty of Natural and Agricultural Sciences, …

The Prolamins Of Pearl Millet, Christian B. Ricks

Theses and Dissertations

Although work on the prolamins of pearl millet (Pennisetum glaucum) has revealed partial amino acid sequences for several alcohol-soluble storage proteins (Marcellino et al. 2002) the genes encoding them have not yet been isolated. We constructed a cDNA library from developing P. glaucum seed tissue and screened it using maize zein gene probes to isolate several α-prolamin-like gene sequences. The proteins encoded by these genes generally fall into two size classes: 20.6kD and 27.1kD, which we call the 21kD and 27kD pennisetins. Both proteins are similar in composition and sequence to α-prolamins from maize, sorghum and Coix. Protein bodies that …

Feeding Ecology Of Asiatic Wild Ass Equus Hemionus, Jochen Lengger, Frieda Tataruch, Christian Walzer

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The Mongolian wild ass or khulan (Equus hemionus) is a potential competitor for forage to reintroduced Przewalski’s horses. To evaluate the major foraging plants of khulan we chose the alkane method that was first described by Mayes in 1984. Different plant species contain varying amounts and proportions of n-alkanes. This fact allows the determination of diet composition by comparing the plant alkane to the fecal alkane pattern. The major advantage is that the method is non-invasive and has been shown to be a reliable method in captive trials. Fecal and plant samples were collected simultaneously and preserved by …

Influence Of Post-Ai Nutrition On Blood Urea Nitrogen, Progesterone, And Pregnancy, George Perry, Brandi Perry, Josh Nelson, Julie Walker, Cody Wright

South Dakota Beef Report, 2007

Research has shown that changes in nutrition can have an effect on reproductive performance. Our objective was to determine the effect of post-AI nutrition on BCS, blood urea nitrogen (BUN), progesterone, and pregnancy rates. Forage-developed Angus-cross bred heifers (n = 336) were synchronized with the Select Synch+ Controlled Internal Drug Releasing device (CIDR) protocol (d -7 100 μg GnRH and CIDR; d 0 25 mg PG and removal of CIDR). Estrus was detected for 72 h and heifers bred by AI 12 h after being detected in estrus; heifers not in detected in estrus were bred by AI and given …

Modelling The Protein And Amino Acid Requirements Of The Greater Rhea (Rhea Americana), James Sales

Turkish Journal of Veterinary & Animal Sciences

Protein and amino acid requirements of the Greater rhea (Rhea americana) have been estimated from growth data available for this species, and assumptions derived with other closely related species. Differences in body weight and growth pattern caused considerable higher protein and amino acid requirements for males compared to females after 3 months of age. Whereas the absolute protein requirement is comparable between males (148 g/day) and females (144.5 g/day) at 50 days of age, 21.8 g/day protein is needed by males at 500 days of age compared to 12.2 g/day for females. Limitations include the lack of knowledge on feed …

Sheep Updates 2006 - Part 3, Karen Venning, Andrew Thompson, Mike Hyder, Sue-Ellen Shaw, Kelly Hill, Ron Mctaggart, Gus Rose, Carolyn Kabore, Mandy Curnow, P. R. Kenyon, S. T. Morris, D. M. West, N. R. Perkins, G. L. Pinchbeck, Ralph Behrendt

Sheep Updates

This session covers six papers from different authors:

GRAZING

1. Making better use of clover, Karen Venning and Andrew Thompson, Department of Primary Industries, Victoria

2. Grazing systems demonstration to optimise pasture utilisation and stocking rate, Mike Hyder, Sue-Ellen Shaw, Kelly Hill and Ron McTaggart, Department of Agriculture and Food Western Australia.

3. Know your audience to increase their rate of practice change - Lifetime Wool as an example, Gus Rose, Department of Agriculture and Food Western Australia, Carolyn Kabore, Kazresearch

REPRODUCTION

4. Lifetime Wool - Ewe Management Guidlines, Mandy Curnow, Department of Agriculture and Food Western Australia

5. …

Effect Of Refrigerated Storage On Fillet Lipid Quality Of Rainbow Trout (Oncorhynchus Mykiss W.) Fed A Diet Containing Different Levels Of Dl A-Tocopherol Acetate, Mustafa Yildiz, Erdal Şener, Hüseyi̇n Gün

Turkish Journal of Veterinary & Animal Sciences

The effect of refrigerated storage at 1 ± 0.3 ºC on vitamin E level, fatty acid composition and lipid oxidation of fillets was studied in 3 groups of rainbow trout fed diets supplemented with increasing levels (100, 300 and 500 mg kg^{-1} diet, respectively) of \alpha-tocopherol acetate as antioxidant. Fish (initial mean weight 131 ± 1.0 g) were fed experimental diets for 58 days and reached a mean final weight of 299 ± 6.1 g, with growth differences among the 3 experimental groups being insignificant (P > 0.05). Fillet samples of fish were analyzed fresh (on day 0) or after storage …

Sheep Updates 2005 - Part 1, R. W. Kelly, R. Kingwell, A. R. Bray, Chris Oldham, Graeme Martin, D. Blanche, D. Ferguson, Keith Crocker, Di Evans

Sheep Updates

This session covers seven papers from different authors: Boosting lambing percentages of WA sheep flocks. R.W. Kelly CSIRO Livestock Industries, Floreat WA , R. Kingwell Department of Agriculture WA,

Kiwis can fly - 30% higher lambing in 15 years, AR Bray, Meat and Wool New Zealand, Wellington, New Zealand

Rams are not a trivial expense, so what can you do to maximise on your investment? Chri Oldham, Department of Agriculture Western Australia, Graeme Martin, University of West Australia.

Care for mun - fetal programming, lamb survival and lifetime performance. RW Kelly CSIRO Livestock Industries, Floreat WA

Boost lamb survival - …