Index Catalog // ScholarsArchive@OSU

The Effects of a Dietary Immunomodulatory Supplement on the Immune-Metabolic Axis in Growing Beef Cattle

Creator:: Armstrong, Shelby A.
Abstract:: To evaluate the immunologic and metabolic effects of OmniGen-AF® (Phibro Animal Health corporation, Quincy, IL; OG) supplementation in growing beef cattle, we designed three studies using replacement beef heifers (8.5 and 10.5 months of age) and steers supplemented across backgrounding, transition, and finishing periods. In Study 1, the effect of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Shelby Armstrong

Effect of Substrate to Inoculum Ratio on Outcomes of In Vitro Rumen Fermentation Studies

Creator:: Remy, Jon D.
Abstract:: The objective of this study was to identify the varying effects of altering the rumen fluid: substrate ratio on the outcomes of in vitro rumen fermentation. In vitro fermentation is a useful tool for evaluating the energy value of feedstuffs and the effect of feed additives on Volatile Fatty Acid...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Shelby Armstrong, Committee Member, representing Phibro Animal Health

Altered ovarian and uterine function in response to intravascular infusion of long chain fatty acids in nonpregnant ewes

Creator:: Burke, Joan M.
Resource Type:: Dissertation
Full Text:: intravascular infusion of long chain fatty acids in nonpregnant ewes AN ABSTRACT OF THE THESIS OF Joan M

Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers

Creator:: Schubach, Kelsey M.
Abstract:: The following experiment presented herein compared growth, physical activity, stress-related responses, and puberty attainment in heifers reared on high- (HIDENS) or low-stocking densities (LOWDENS). Sixty Angus x Hereford heifers were ranked by age and BW (210 ± 2 d and 220 ± 2 kg, respectively) on d 0, and assigned...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Kelsey M. Schubach, for the degree of Master of Science in Animal Science presented on

Effects of Dried Chicory Root on Parasite Loads and Complete Blood Count of Sheep

Creator:: Kirschten, Haley M.
Abstract:: Growing concerns over the rise of anthelmintic resistant populations of gastrointestinal nematodes (GINs) have led producers to look for alternative means of treatment. These sentiments have been echoed by organic producers, who are restricted from the use of synthetically derived anthelmintics in the US. Chicory has emerged as a potential...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Haley M. Kirschten for

Factors Affecting Persistence of Canines at an Independent Task

Creator:: Brubaker, Lauren M.
Abstract:: The development of problem-solving behaviors in canines, including persistence, has implications for canine training, welfare, and the human-dog bond. Past research has shown that a variety of factors, including genetics (domestication) and training experience, play a role in a how a canine might behave during a problem-solving task. Less well...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Lauren M. Brubaker for the degree of Master of Science in Animal Science presented on June

Effects of early rearing environment on learning ability and behavior in laying hens

Creator:: Morris, Hannah M.
Abstract:: The effects of enriching the rearing environment of laying hens on their learning ability and behavior were investigated. Day old ISA brown layer chicks were group housed in open floor pens that were either enriched or unenriched. The enriched rooms contained visual stimuli in the form of hanging decorations, auditory...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Hannah M. Morris for the degree of Master of Science in Animal Science presented on

Endocrinology of fur growth and reproduction in mink

Creator:: Rose, William Jackson
Abstract:: Experiments were conducted to determine: 1) the effects of exogenous melatonin and reduced photoperiod on molting and growth of the winter pelage (fur) and 2) whether changes in serum prolactin levels of treated and control mink during this same period were correlated with growth of winter fur. Adult and kit...
Resource Type:: Dissertation
Full Text:: prolactin with Kd values of 8.25 x 10 -11 + .68 M (uterus) and of 6.14 x 10 11 + .93 M (ovaries). The

Bovine luteal oxytocin synthesis and secretion in vitro : effects of phorbol ester, calcium ionophore and indomethacin

Creator:: Cosola-Smith, Carrie A.
Abstract:: Experiments were conducted to examine the effects of a tumor-promoting phorbol ester, a calcium ionophore and indomethacin on bovine luteal oxytocin (OT) synthesis and secretion and progesterone secretion. Six 18-month-old crossbred beef heifers in Exp. 1 and five similar heifers in Exp. 2 were observed twice daily for estrus using...
Resource Type:: Masters Thesis
Full Text:: sliced and incubated for 2 h with 0.81nM 12-0-tetradecanoylphorbol 13-acetate (TPA), 1.62 nM TPA, 100p,M

Effects of pasture and management variables on forage intake by grazing sheep

Creator:: Lewis, Robert David
Abstract:: Grazing experiments were conducted in summer, autumn and winter to assess the effects of stock density, grazing duration, pre-grazing pasture mass and stock type on forage intake by sheep grazing at high stock densities for short durations. In summer and winter, sheep were stocked at 200 sheep/ha on 0.1 ha...
Resource Type:: Dissertation
Full Text:: ; Armstrong et al., 1986). At low to intermediate digestibility levels, intake has been shown to increase

Response of the bovine corpus luteum to exogenous gonadotropin-releasing hormone during the estrous cycle

Creator:: Martin, Teri L.
Abstract:: Two experiments were conducted to investigate the effects of gonadotropin-releasing hormone (GnRH), administered twice during the same estrous cycle, on bovine luteal function. Eight mature beef cows, each cow serving as her own control, were injected intravenously (i.v.) with saline on days 2 and 8 of the cycle (day of...
Resource Type:: Masters Thesis
Full Text:: of the GnRH. I express my sincere gratitude to Judith Martin-Boesch and Kurt Boesch for their love

Embryonic mortality in pubertal gilts

Creator:: Archibong, Anthony Effanga
Abstract:: An experiment was conducted to compare the reproductive performance and serum concentrations of progesterone and estrogen of mated first (n=18) and third (n=18) estrous gilts slaughtered in equal numbers on days 3, 15 and 30 postmating. Fertilization rate did not differ between mated first and third estrous gilts. Embryonic survival...
Resource Type:: Dissertation
Full Text:: estradiol production originally proposed for the rat (Falck, 1959) are present (Armstrong et al., 1979

Some effects of estradiol on ovine luteal function

Creator:: Akbar, Abulfatah Maqsood, 1938-
Abstract:: Some effects of 171β-estradiol on ovine luteal function were studied in five experiments. Estradiol injected into ewes on days 11 and 12 of the estrous cycle caused luteal regression in both intact and unilaterally hysterectomized ewes indicating that the presence of one uterine horn permits estradiol to cause luteolysis comparable...
Resource Type:: Dissertation
Full Text:: their secretory function (Kilpatrick, Armstrong and Greep, 1964). Corpora lutea of the cyclic rat lose

Management Strategies to Improve Immune Function and Performance of Feeder Cattle

Creator:: Lippolis, Katana D.
Abstract:: Three experiments evaluated the effects of different management strategies on immune function and performance of feeder cattle. The objective of experiment 1 was to compare the effects of anticipating, delaying, or vaccinating against Bovine Respiratory Disease (BRD) at the time of weaning and feedlot entry on growth, DMI, and plasma...
Resource Type:: Dissertation
Full Text:: concentrations of antibodies against M. haemolytica, bovine viral diarrhea types 1 and 2 viruses. Plasma

Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters

Creator:: De Meireles Reis, Maria
Abstract:: The following experiment presented herein compared growth, physiological, and reproductive responses of beef heifers with (MI) or without (CON) access to a creep-feeder, as a manner to stimulate metabolic imprinting while nursing their dams. On d 0 of the experiment, 60 Angus × Hereford heifers were ranked by initial BW...
Resource Type:: Masters Thesis
Full Text:: Clemmons, 1995). In cattle, Armstrong et al. (2001) reported a positive association between feed intake

Pituitary and uterine control of ovarian function in the gilt and ewe

Creator:: Chakraborty, Prabir Kumar, 1936-
Abstract:: The role of the pituitary gland and uterus in regulating ovarian function in the estradiol-treated gilt and ewe was investigated in two experiments. Pituitary gonadotropin content, ovarian follicular development and corpus luteum function were studied following daily intramuscular injection of seven gilts with 7 mg of 17β-estradiol from day 11...
Resource Type:: Dissertation
Full Text:: Science for providing the gilts and facilities. My sincere thanks are extended to Dr. M. W. Montgomery

Physiological factors affecting ovine uterine estrogen and progesterone receptor concentrations

Creator:: Prater, Patrice L.
Abstract:: Two experiments were conducted to determine whether in ewes uterine concentrations of estrogen and progesterone receptors are affected by the presence of a conceptus or by the hormonal milieu associated with extremes in photoperiod to which ewes are exposed. In Exp.1, nine mature ewes were unilaterally ovariectomized by removing an...
Resource Type:: Masters Thesis
Full Text:: Armstrong, 1968; Moor, 1977). Follicle steroidogenesis begins as the specialized cells that comprise the

Mechanisms of estradiol-17β-induced down-regulation of ovine uterine oxytocin receptors during the estrous cycle

Creator:: Hazzard, Timothy McLagan
Resource Type:: Dissertation
Full Text:: of the granulosa (cumulus oophorus) cells surrounding the oocyte (Gore-Langton and Armstrong

The effects of ryegrass straw and monensin on performance of feedlot lambs

Creator:: Shqueir, Adnan Ali
Abstract:: The objectives of this study were to investigate the effects of the by-product, ryegrass straw, and the feed additive, monensin, on the performance of feedlot lambs. Four pelleted rations were fed ad libitum: Ration 1 - 50% barley, 50% alfalfa hay; Ration 2 - 50% barley, 50% alfalfa hay and...
Resource Type:: Masters Thesis
Full Text:: rumen when compared to a ration containing a high level of maize (Leng and Brett, 1966). Armstrong et

Gonadotropin releasing hormone-induced alteration of corpus luteum function in beef heifers

Creator:: Rodger, Lynn Dian
Abstract:: Two experiments were conducted to evaluate the effects of gonadotropin releasing hormone (GnRH) on the function of the bovine corpus luteum during the estrous cycle. In Experiment 1, 10 heifers were assigned randomly into two groups with each heifer serving as her own control. Heifers in Group I (n=5) were...
Resource Type:: Masters Thesis
Full Text:: , 1964; Hall and Koritz, 1965b; Armstrong and Black, 1966, 1968; Hansel, 1966). These aforementioned

Cyclopropenoid fatty acid-induced suppression of ovine corpus luteum function

Creator:: Cortell, Anna Katherine
Resource Type:: Masters Thesis
Full Text:: protein; P < 0.05). Binding affinities of the LH receptor were similar (mean Kd = 2.45 x 10-13 M and

Oxytocin synthesis and release by the bovine corpus luteum

Creator:: Abdelgadir, Salaheldin Eltigani
Abstract:: Four experiments were conducted to determine oxytocin concen tration of bovine luteal tissue at different stages of the estrous cycle and to study the effects of prostaglandins F₂α (PGF₂α), E₂ (PGE₂), luteinizing hormone (LH), cycloheximide, colchicine and cytochalasin B on oxytocin synthesis and release in vitro. In experiment 1, luteal...
Resource Type:: Dissertation
Full Text:: progesterone (Lipner and Greep, 1971) or prostaglandin (Armstrong, 1975) synthesis prevented ovulation

Some ovarian characteristics of the postpartum rabbit

Creator:: Gjesvold, James Allen
Abstract:: The effects of suckling on several ovarian characteristics were studied in postpartum rabbits. Ovarian weight was found to be significantly greater in rabbits suckled for twelve days than in nonsuckled rabbits autopsied at a similar interval postpartum or in a third group autopsied at parturition. There were no significant differences...
Resource Type:: Masters Thesis
Full Text:: marked shortening of the estrous cycle (Armstrong and Hansel, 1959; Hansel and Wagner, 1960; Anderson

In Vivo and In Vitro effects of a cyclopropenoid fatty acid on progesterone synthesis by the ovine corpus luteum

Creator:: Tumbelaka, Ligaya
Abstract:: Two experiments were conducted to examine the effect of a cyclopropenoid fatty acid on luteal cell function. In Exp. 1, 12 mature ewes were mated to a fertile ram, assigned to two groups (n = 6/group) and laparotomized on day 18 of gestation. Ewes with corpora lutea (CL) in both...
Resource Type:: Masters Thesis
Full Text:: vitro progesterone production occurs in response to LH by bovine (Armstrong and Black, 1966; William

Corpus luteum function in hysterectomized and unilaterally hysterectomized ewes treated with gonadotropin-releasing hormone

Creator:: Whitmore, Diana L.
Resource Type:: Masters Thesis

Cellular mechanisms of altered bovine luteal function in response to exogenous gonadotropin-releasing hormone

Creator:: Bertrand, Jennifer Elaine
Abstract:: To determine whether membrane-related events may be involved in attenuated luteal function after gonadotropin-releasing hormone (GnRH) administration, corpora lutea (CL) were removed from 10 beef heifers on day 7 of the estrous cycle after i.v. injection of GnRH or saline on day 2 of the cycle. Luteal slices were incubated...
Resource Type:: Dissertation
Full Text:: organization (Gore-Langton and Armstrong, 1994). All follicles begin as primordial or primary follicles

The fatty acid composition of certain bovine tissues

Creator:: Thompson, Robert Charles, 1927-
Abstract:: In this study subcutaneous, inter- and intramuscular fats from 42 Hereford steers were analyzed for their fatty acid composition using gas-liquid chromatography. The same tissues were analyzed from one pair each of identical twins of Angus and Shorthorn breeding. Muscle and liver lipids from these latter four animals were fractionated...
Resource Type:: Dissertation
Full Text:: this century. Armstrong and Allen (1924) analyzed beef and mutton tallaws from various parts of the

The effects of exogenous melatonin on the plasma levels of interstitial cell stimulating hormone in sheep

Creator:: French, Larry Robert
Abstract:: There is an increasing body of evidence that the pineal gland acts as a neuroendocrine transducer, translating neural information about environmental lighting condition into hormonal information. In the rat, light controls the production of melatonin which acts via the hypothalamic-hypophyseal pathway to control the function of the gonads, A similar...
Resource Type:: Masters Thesis
Full Text:: blood was obtained by jugular puncture be- tween the hours of 9 a. m. and 12 noon. The blood samples

The effects of exogenous follicle stimulating hormone on serum hormone concentrations and in vitro testicular responsiveness to gonadotropins in prepubertal bulls

Creator:: Meyers, Stuart Alan
Resource Type:: Masters Thesis
Full Text:: process with a relatively high equili- brium association constant (K a = 2 to 6 x 10 10 M 1

Involvement of myristoylated alanine-rich c kinase substrate (MARCKS) protein in prostaglandin F2α- induced secretion of oxytocin by the bovine corpus luteum

Creator:: Salli, Ugur
Abstract:: Prostaglandin F₂α (PGF₂α), a stimulatory hormone of luteal oxytocin secretion, is known to activate protein kinase C (PKC); however, the intracellular signals that promote exocytosis of oxytocin remain to be elucidated. Myristoylated alanine-rich C kinase substrate (MARCKS), a protein specifically phosphorylated by PKC, crosslinks actin filaments associated with the inner...
Resource Type:: Dissertation
Full Text:: process (Armstrong and Zamecnik, 1974; LeMaire, 1977; Espey et al., 1989). Labhsetwar (1972

Effects of Feeding OmniGen-AF® on Superovulatory Response in Donor Beef Cows

Creator:: Snider, Alexandria P.
Abstract:: One assisted reproductive tool used to propagate highly desirable genetics from elite sire and dam matings is embryo transfer. Superovulation is the first part of the overall protocol and it is a required yet costly and biologically stressful procedure in cattle embryo transfer. The process of superovulation results in high...
Resource Type:: Dissertation
Full Text:: quality is important for improving the success of a superovulation protocol (M. A. Velazquez, 2011

Optimum combination of time and rumen fluid in three in vitro techniques used to predict forage digestibility

Creator:: McNeill, David Gingles
Resource Type:: Masters Thesis
Full Text:: fermentation. Armstrong and Blaxter (2, p. 253) demonstrated that methane may very well indicate the extent

Regulation of ovine pituitary function with estrogen alone and in combination with progresterone

Creator:: Osland, Robert Birger
Abstract:: Five experiments were conducted to study the activity of the pituitary gland in sheep as influenced by estrogen administered alone or in combination with progesterone. Particular emphasis was given to the study of gonadotropic activity. Mature wethers (experiments I, III, IV and V) or ewes (experiment II) were utilized as...
Resource Type:: Masters Thesis

The effects of the protein metabolites ammonia and urea on oocyte maturation, fertilization, and early embryo development, using an in vitro system

Creator:: Clark, Tina Marie
Resource Type:: Masters Thesis
Full Text:: at the levels of rumen NH3 observed with conventional diets (Armstrong 8s Weekes, 1983). As

The effects of alfalfa hay quality on the production of a lactating dairy cow

Creator:: Turnbull, Gerald Wayne
Resource Type:: Masters Thesis
Full Text:: liver. In contrast, butyric acid is largely metabolized in the epithelium to ketone bodies (Armstrong

Comparison of high and low tannin sorghum grain with low quality roughage for feeding ruminants

Creator:: Wanyama, Justin Mukami
Abstract:: Two studies were conducted to compare lamb feedlot performance and digestibility of nutrients by lambs fed rations containing bird-resistant and bird-susceptible sorghum grain with 20 or 40% tall fescue hay as a source of roughage. Four rations were fed ad libitum on the performance study and at 80% of ad...
Resource Type:: Masters Thesis
Full Text:: quality roughage for feeding ruminants AN ABSTRACT OF THE THESIS OF Justin M. Wanyama for the degree of

Secretion of luteinizing hormone in response to exogenous melatonin in postpartum beef cows and ovariectomized beef heifers

Creator:: Sucheta, Susan Leers
Resource Type:: Dissertation
Full Text:: for the donation of biological grade NIH-bLH-B-10 and Dr. Myron Brown and Dr. C. M. Tucker, Sanofi

Some hormonal factors associated with the regulation of ewe reproductive patterns

Creator:: Reeves, Jerry John
Abstract:: Twenty-eight Columbia ewes were made available for study during their breeding and anestrous seasons. After the regularity of the estrous cycles had been established, eight of the ewes were sacrificed in pairs at four different stages of the estrous cycle. Eight additional ewes were sacrificed during anestrus. Pituitary glands, ovaries,...
Resource Type:: Masters Thesis
Full Text:: Ewe Reproductive Patterns AN ABSTRACT OF THE THESIS OF Jerry John Reeves for the M. S. (Name

Interactions between the immune system, stress and thymulin

Creator:: Christian, Richard L., (Richard Leroy), 1971-
Abstract:: This study was conducted to determine the effects of shipping stress on the immune system in domestic lambs (Ovis aries) and to determine the potential of the thymic peptide, thymulin, to reduce those effects of stress on the immune system. Treatments consisted of no shipping (as unstressed controls), shipping (as...
Resource Type:: Masters Thesis
Full Text:: " attributed to an immunosuppression (Fabris & Mocchegiani, 1985; Bach, M.-A., 1977; Goya, 1992; Bliznakov

Monensin and zeranol alone and in combination for growing-finishing steers and growing heifers

Creator:: Wooten, Donald Griffin
Abstract:: Ninety-two spring-born and 76 fall-born steer and heifer calves (Hereford and Angus x Hereford) averaging 188 and 255 kg, respectively, were utilized in a 2x2 factorial arrangement of treatments to study the effects of zeranol and monensin, alone and in combination, on growth rate, feed efficiency and carcass characteristics. After...
Resource Type:: Masters Thesis
Full Text:: , Greenman et al. revealed information that zearalonol (at 4 x 10 -7 M) would inhibit almost the entire

The effects of alfalfa hay fiber and vitamin B₁₂ levels in body fluids on milk fat production in high-producing dairy cows

Creator:: Dudley, Eric George
Abstract:: The research presented in this thesis was designed to evaluate the effects of feeding alfalfa hays from the Klamath Basin of Oregon in practical dairy rations on milk fat production in high-producing Holstein cows. Thirty-two second lactation or older animals estimated to be capable of producing at least 70 lbs...
Resource Type:: Masters Thesis
Full Text:: (Armstrong, 1965; Schmidt, 1971; Linzell, 1974). Having described changes in ruminal fermentation patterns

Gonadotropin releasing hormone-induced secretion of luteinizing hormone during the milk ejection reflex in the postpartum beef cow

Creator:: Jaeger, John Ralph
Abstract:: A study was conducted to determine the effect of the milk ejection reflex on exogenous gonadotropin releasing hormone (GnRH)- induced release of luteinizing hormone (LH) after short term calf removal. Twenty-four postpartum multiparous beef cows were assigned 3 randomly to groups arranged in a 2[superscript 3] factorial design to be...
Resource Type:: Masters Thesis
Full Text:: . To my fiancee, Donagene M. Anderson, I extend my sincerest thanks and appreciation for being my

Quantities of prostaglandins in whole and extended bovine semen and their potential effect on fertility following insemination

Creator:: Jaeger, John Ralph
Abstract:: Our objectives were to determine 1) the concentration of prostaglandin F2α (PGF2α) in whole and extended bovine semen, 2) if concentrations of prostaglandins in extended bovine semen are correlated to fertility, and 3) if PGF2α administered at the time of artificial insemination would improve conception rate. Concentration of PGF2α tended...
Resource Type:: Dissertation
Full Text:: (Armstrong and Grinwich, 1972; Orczyk and Behrman, 1972). Armstrong and coworkers (1974) concluded that

The effect of lasalocid on fall calving beef cows

Creator:: Hopman, Bruce T.
Abstract:: Forty-two fall-calving crossbred cows were equally allotted to six pens of seven cow-calf pairs each. Two treatments (0 and 200 mg lasalocid/head/day) with three replications were used to determine the effects of lasalocid on fall-calving beef cows. The cows were fed grass hay, haylage and pasture ad libitum. The cow-calf...
Resource Type:: Masters Thesis

Nutritional regulation of adipocyte differentiation in animals

Creator:: Brandebourg, Terry
Abstract:: The incidence of obesity has increased in the U.S. until an obesity epidemic now exists. American consumers are acutely aware of the consequences of obesity and are increasingly associating the consumption of high-fat foods with having a negative impact upon their health. This has in turn forced producers to grow...
Resource Type:: Dissertation

Steroid transformations in the pregnant mare: the effects of exogenous progestins and trilostane on the progestin milieu- in vivo and in vitro

Creator:: Schutzer, William E.
Resource Type:: Masters Thesis

Biochemical evaluation of silage corn varieties

Creator:: Anderson, Daniel Craig
Abstract:: Chemical and biological evaluations were conducted to provide chemical composition and digestibility information, in addition to yield data, for silage corn varieties produced on poorly drained Dayton soil series. Each variety was subjected to a Kjeldahl nitrogen, acid detergent fiber, acid detergent lignin, cell wall, and residual ash test. Subsequently...
Resource Type:: Masters Thesis
Full Text:: the yield of crude fiber to vary. Armstrong, Cook, and Brynmor (1950) discussed the degree of

Partial characterization of gelatinases produced by preimplantation porcine, ovine and bovine embryos

Creator:: Chamberlin, RaeAnne
Resource Type:: Masters Thesis
Full Text:: double strength sample buffer containing 0.125 M 28 Tris-HC1 (pH 6.8), 20% glycerol, 5% SDS, and

Milk Production, Pasture Performance, and Environmental Sustainability of Specialized Pastures

Creator:: Wilson, Randi L.
Abstract:: This study investigated the effects of diversification strategy through the inclusion of forb and legume based pastures in the feedbase of dairy cows on annual forage production, botanical composition, spring milk yield, N partitioning and methane emissions from dairy cows in Western Oregon. Using a randomized complete block design, 3...
Resource Type:: Masters Thesis
Full Text:: Cherney, 1993). In New Zealand, Armstrong (1974) studied the yield of different birdsfoot trefoil

Effects of two forms of intrareticular selenium supplements on beef cow selenium status and on the transfer of selenium from dam to offspring

Creator:: Campbell, Donald T.
Abstract:: Two concurrent studies were conducted to evaluate the effect of selenium (Se) supplementation on beef cows. Trial 1 was designed to evaluate the safety and efficacy of two intrareticular Se supplementation delivery systems. Trial 2 was designed to evaluate the transfer of Se across the placenta and through the colostrum...
Resource Type:: Masters Thesis

Characteristics of preovulatory follicles of pubertal gilts

Creator:: Smith, Gary Daniel
Abstract:: Two experiments were conducted utilizing crossbred gilts to evaluate follicle characteristics at puberty and to determine the effect of exogenous estradio1-17β on embryonic mortality in the mature cycling gilt. Experiment 1 was conducted to compare preovulatory follicle numbers and sizes and follicular fluid concentrations of progesterone, estradio1-17β, plasminogen activator and...
Resource Type:: Masters Thesis

Effect of different nitrogen sources on molasses-based liquid supplements for cattle

Creator:: Ortega-Rivas, Eligio
Resource Type:: Dissertation
Full Text:: Control Run 2 6.03 4.07 .022 a 26c4g 12a 1.7 1-6 2.21 SCP10 1 7.66 4.07 3.9 28.3c;m .0421 226",_c 59a4c

Cow calf confinement energy levels

Creator:: Price, David P.
Resource Type:: Dissertation
Full Text:: been calculated to require 2.1 M cal of 12 Digestible Energy (1.72 Meal Metabolizable Energy

Evaluation of low quality roughages and agricultural by-products as livestock feed

Creator:: Hussain, Imdad
Abstract:: Nine feeding trials and four laboratory scale experiments were conducted in this study. The study consisted of: (1) use of grass straw:corn juice (CJ) silages with fishmeal and/or alfalfa hay supplementation in beef heifers, sheep, pregnant dairy heifers, water buffaloes and Hereford cows; (2) use of cull onions:grass straw silages...
Resource Type:: Dissertation
Full Text:: 1990 (CH,M Hill and O.S.U., 1991), and at least six million gallons of corn juice (CJ) are currently

Nonprotein nitrogenous constituents of the blood in relation to rumen development and growth in suckling lambs

Creator:: Jessup, Gordon Lee
Resource Type:: Dissertation

Evaluation of tree forage as a nontraditional feedstuff for small livestock

Creator:: Ayers, Anne Christine
Abstract:: Five experiments were conducted to evaluate tree forage as a feedstuff for small livestock, using the foliage of black locust (Robinia pseudoacacia) and hybrid poplar (Populus spp.). In the first trial, rabbits were fed diets containing 40% alfalfa (control), and 10%, 20% and 40% poplar leaves (PL) from untrimmed or...
Resource Type:: Masters Thesis
Full Text:: M. Muta. 1984. Effect of condensed tannin of false acacia leaves on protein digestibility, as

Evaluation of liquefied fish as ruminants feed

Creator:: Shqueir, Adnan Ali
Resource Type:: Dissertation
Full Text:: , TVFA (m Mol /liter) = 61.27 + 2.18 LF level, R 2 = .46 Data on Pro and A/P ratios indicate that LF

Evaluation of responses of sows and their litters to feeding patterns

Creator:: Kwansa, Wilhelmina
Resource Type:: Dissertation

The role of the plasminogen activator system in the etiology of ovarian follicular cysts in dairy cattle

Creator:: McNeel, Anthony Kent
Abstract:: Cystic ovarian disease (COD) is an anovulatory condition in cattle that afflicts between 6-18% of all dairy cows in the US. Ovulation is dependent on the plasminogen activator (PA) family of proteases and protease inhibitor for proteolysis, culminating in follicular rupture. Failure of the follicle to ovulate suggests an aberration...
Resource Type:: Dissertation

Influence of pesticides on rumen microbial metabolism

Creator:: Kutches, Alexander Joseph
Resource Type:: Dissertation
Full Text:: rumen microbes as when used in equivalent amounts alone. Reductions in IVDMD and VFA (ii,M/m1) were

Effect of Agronomically Selenium Biofortified Hay on Oxidative Status, Metabolic and Inflammatory Biomarkers, and Immune Response of Transition Primiparous Dairy Cows and Se Transfer and Glutathione Peroxidase Activity in their Calves

Creator:: Jaaf, Shana S.
Abstract:: During the peripartum period (3 weeks before through 3 weeks after calving, a.k.a. “transition”), high producing dairy cows experience, among others, , oxidative stress and immune suppression that compromise performance and increased incidence of diseases.Among trace minerals, supplementation of Selenium (Se) can help to improve the transition by enhancing glutathione...
Resource Type:: Dissertation
Full Text:: (Lorraine M. Sordillo & Aitken, 2009). During the transition period, dairy cows also experience

Implications of selenium status for various metabolic and performance parameters in beef cattle

Creator:: Drake, Daniel J.
Abstract:: Metabolic and performance parameters of beef calves were compared between Se supplemented (Se) and control (C) dam treatment groups from known Se deficient cattle. Four trials were conducted at three locations involving 50, 36, 25 and 39 experimental dam/calf pairs. Se supplementation was either two 30 gram oral boluses (90%...
Resource Type:: Dissertation

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