Open Access. Powered by Scholars. Published by Universities.®

Animal Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Cattle

Discipline
Institution
Publication Year
Publication
Publication Type
File Type

Articles 181 - 210 of 458

Full-Text Articles in Animal Sciences

Effect Of Conditioned Medium On The Recovery Of Dormant Mycobacteria In Culture, Kelly E. Rock Aug 2014

Effect Of Conditioned Medium On The Recovery Of Dormant Mycobacteria In Culture, Kelly E. Rock

Journal of Undergraduate Research at Minnesota State University, Mankato

Mycobacterium avium subsp. paratuberculosis (Mpt) is the etiologic agent of Johne’s disease, a chronic intestinal disease in cattle that threatens the economic viability of dairy farming. Diagnostic culture is typically unrewarding until several years after infection when clinical signs can be observed. This leads to widespread infection within the herd. Difficulty in culturing Mpt may be a result of oxidative damage due to the increased metabolic rate when dormant organisms are recovered in a nutrient rich medium. In order to improve recovery it is believed that some organisms secrete a growth factor in times of environmental stress which enables them …

Go to article

Feeding Alkaline Treated And Processed Crop Residue To Feedlot Cattle, Sarah Jean Peterson Jul 2014

Feeding Alkaline Treated And Processed Crop Residue To Feedlot Cattle, Sarah Jean Peterson

Department of Animal Science: Dissertations, Theses, and Student Research

Chemical treatment and decreased particle size are methods used to improve digestibility and utilization of the available nutrients in low quality forages. Previous research has indicated that chemically treated corn residue can take the place of corn when included in finishing rations containing distillers grains. Also, decreasing particle size utilizing methods such as pelleting has been shown to improve DMI and ADG. However, limited research has been completed on use of chemical treatment and pelleting in growing and receiving rations. Also, an ideal distillers inclusion has not yet been identified when including alkaline treated stalks in finishing rations. Therefore, a …

Go to article

Determining Forage Intake Of Nursing Calves Grazing Native Sandhills Rangeland, Jennifer A. Walker May 2014

Determining Forage Intake Of Nursing Calves Grazing Native Sandhills Rangeland, Jennifer A. Walker

Department of Animal Science: Dissertations, Theses, and Student Research

Effective management of grazing lands is important for longevity and productivity. Accurate calculations of stocking rates per animal unit will aid in long term sustainability. Calculating stocking rates for cattle can prove challenging for cows and nursing calves. Limited research has been conducted to determine forage intake of the nursing calf pre-weaning. The objective of Trial 1 was to determine nursing calf forage intake over time until weaning. Trial 1 used 8 crossbred cow-calf pairs in experiment 1 and 12 pairs in experiment 2. Pairs were separated into two groups rotating between grazing upland range or housed in individual pens …

Go to article

Effects Of Condensed Tannins On The Toxicity Of Fireweed (Senecio Madagascariensis) To Cattle, Carolyn L. Wong May 2014

Effects Of Condensed Tannins On The Toxicity Of Fireweed (Senecio Madagascariensis) To Cattle, Carolyn L. Wong

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fireweed (Senecio madagascariensis) is a noxious and invasive weed affecting pastures in Hawaii, Australia, and South America. Fireweed contains compounds called pyrrolizidine alkaloids that are toxic to most grazing mammals. Toxic effects to cattle include irreversible damage to liver cells, hardening of the liver, and loss of liver function, which may lead to jaundice, swelling, and the accumulation of fluids in the stomach and other physiological malfunctions. External effects include rough appearance, diarrhea, low energy and dullness, photosensitization, and abnormal behavior, many of which can lead to death. Fireweed also can reduce pasture productivity by as much as …

Go to article

Methods Of Bovine Reproduction, Kelsey L. O'Donnell Apr 2014

Methods Of Bovine Reproduction, Kelsey L. O'Donnell

Honors Scholar Theses

The beef and dairy cattle industries are of immense economic value in the United States and have made impressive advancements over the past century. Their success depends strongly upon the reproductive efficiency of their breeding programs. This overview discusses the major advancements in bovine reproduction that have been integrated into the beef and dairy cattle industries and also the emerging technologies that are currently being researched. Current practices like artificial insemination and estrus synchronization resulted from the development of a strong understanding of cattle physiology and the endocrinology of the estrous cycle. With these technologies, selection of superior genetic traits …

Go to article

Model Development For The Prediction Of Intake And Carcass Measures To Be Used As Economic Marketing Determinants For Calf-Fed Steers, Mallorie F. Wilken Apr 2014

Model Development For The Prediction Of Intake And Carcass Measures To Be Used As Economic Marketing Determinants For Calf-Fed Steers, Mallorie F. Wilken

Department of Animal Science: Dissertations, Theses, and Student Research

Accurate prediction of intake and carcass characteristics can assist in projecting input costs and potential premiums when cattle are sold at optimum finishing so net profit/loss can be anticipated. Currently published DMI prediction equations and dietary NE values are based off of data collected over 50 years ago and have been shown to inaccurately predict intake compared to a prediction equation based of off performance data. Calculating dietary NE values from performance data increased precision and accuracy of prediction. Additionally, prediction accuracy was increased for diets containing ethanol byproducts. Since ethanol byproducts have been shown to have 110 to 140% …

Go to article

Halogeton (H. Glomeratus) Poisoning In Cattle: Case Report, Kerry A. Rood, Kip E. Panter, Dale R. Gardner, Bryan L. Stegelmeier, Jeffery O. Hall Apr 2014

Halogeton (H. Glomeratus) Poisoning In Cattle: Case Report, Kerry A. Rood, Kip E. Panter, Dale R. Gardner, Bryan L. Stegelmeier, Jeffery O. Hall

Animal, Dairy, and Veterinary Science Faculty Publications

Historically, the most significant losses from halogeton poisoning have been reported in sheep, with multiple catastrophic deaths documented. While recorded death losses in cattle from halogeton poisoning are less common than in sheep, recent cases, including 2 reported here, and anecdotal reports from other ranchers suggest that the impact of halogeton losses in cattle herds in the western United States is much more widespread than originally thought. Halogeton may accumulate up to 30% oxalates; a small amount of the plant (300 g) is enough to cause death in sheep. Oxalates precipitate calcium from the blood, resulting in hypocalcemia, formation of …

Go to article

Increasing Dietary Neutral Detergent Fiber Concentration Decreases Ruminal Hydrogen Sulfide Concentrations In Steers Fed High-Sulfur Diets Based On Ethanol Coproducts, S. J. Morine, M. E. Drewnoski, S. L. Hansen Jan 2014

Increasing Dietary Neutral Detergent Fiber Concentration Decreases Ruminal Hydrogen Sulfide Concentrations In Steers Fed High-Sulfur Diets Based On Ethanol Coproducts, S. J. Morine, M. E. Drewnoski, S. L. Hansen

Department of Animal Science: Faculty Publications

Cattle feedlot diets commonly contain ethanol coproducts that are high in S. This dietary S is reduced in the rumen by sulfate reducing bacteria, resulting in an accumulation of hydrogen sulfide (H2S), increasing the risk for S toxicity. A negative correlation between H2S and ruminal pH has been observed previously. The objective of this study was to determine the effect of varying dietary NDF from chopped bromegrass hay (66% NDF) on performance, ruminal pH, and ruminal H2S gas concentration of steers fed a high-S finishing diet. One hundred fifty crossbred steers (359 ± 51 kg BW) were blocked …

Go to article

High-Sulfur In Beef Cattle Diets: A Review, M. E. Drewnoski, D. J. Pogge, S. L. Hansen Jan 2014

High-Sulfur In Beef Cattle Diets: A Review, M. E. Drewnoski, D. J. Pogge, S. L. Hansen

Department of Animal Science: Faculty Publications

While many cattle feeding areas in the United States have long dealt with high sulfate water, increased feeding of ethanol co-products such as distillers grains with solubles to beef cattle has led to a corresponding increase in dietary sulfur. As a result, sulfur metabolism in the ruminant has been the focus of many research studies over the past ten years, and advances in our knowledge have been made. Excessive sulfur in cattle diets may have implications on trace mineral absorption, dry matter intake, and overall cattle growth. This review will focus on what we have learned about the metabolism of …

Go to article

Comparative Digestibility By Cattle Versus Sheep: Effect Of Forage Quality, S. A. Soto-Navarro, R. Lancaster, C. Sankey, B. M. Capitan, B. P. Holland, L. A. Balstad, C. R. Krehbiel Jan 2014

Comparative Digestibility By Cattle Versus Sheep: Effect Of Forage Quality, S. A. Soto-Navarro, R. Lancaster, C. Sankey, B. M. Capitan, B. P. Holland, L. A. Balstad, C. R. Krehbiel

Department of Animal Science: Faculty Publications

The objective was to determine the effect of forage quality on apparent total tract digestibility and ruminal fermentation in cattle versus sheep. Five yearling English crossbred (Hereford × Angus) steers (440.4 ± 35.6 kg of initial BW) and 5 yearling whiteface (Rambouillet × Columbia × Debouillet) wethers (44.4 ± 4.6 kg of initial BW), each fitted with a ruminal cannula, were randomly assigned to 1 of 3 forage sources within ruminant specie, and the study was conducted over 3 periods. For forage source, both animal and period served as the blocking factor with all forage sources represented once within each …

Go to article

Gestational Form Of Supplemental Selenium (Se) Affects Steroidogenic Gene Expression In The Newborn Calf Testis, Stefani R. Garbacik Jan 2014

Gestational Form Of Supplemental Selenium (Se) Affects Steroidogenic Gene Expression In The Newborn Calf Testis, Stefani R. Garbacik

Theses and Dissertations--Animal and Food Sciences

Selenium (Se) is an important trace mineral in the diet of cattle. Our objective was to determine whether the form of supplemental Se fed to the dam would affect the expression of genes regulating steroidogenesis in the newborn testis. Twenty-four Angus-cross cows were assigned randomly (n=8) to individual ad libitum access of a mineral mix containing 35 ppm of Se supplied as sodium selenite (inorganic, ISe; Prince Se), Sel-Plex (organic, OSe; Sel-Plex, Alltech) or a 50/50 mix of ISe/OSe (MIX) 4 months prior to breeding and throughout gestation. All male calves were castrated within 2 days of birth and total …

Go to article

Insertion/Deletion Polymorphism Of The Sterol Regulatory Element-Binding Protein 1 Gene In Different Cattle Breeds, Witold Stanislaw Proskura Jan 2014

Insertion/Deletion Polymorphism Of The Sterol Regulatory Element-Binding Protein 1 Gene In Different Cattle Breeds, Witold Stanislaw Proskura

Turkish Journal of Veterinary & Animal Sciences

In the present study, an 84-bp insertion/deletion polymorphism of the sterol regulatory element-binding protein 1 (SREBP1) gene was investigated. The analysis included 6 Polish cattle herds consisting of beef (Limousin, Angus, Charolais), dairy (Holstein-Friesian, Jersey) and dual-purpose (Montbeliard) breeds. The polymorphism was found only in Limousin and Montbeliard animals, in which both the short (S)- and long (L)-type alleles occurred. The genotype distribution in Montbeliard cattle was as follows: 0.038, 0.406, and 0.556 for SS, LS, and LL, respectively. To the author's knowledge, this study was the first to investigate the above-mentioned polymorphic site in the Montbeliard and Jersey cattle …

Go to article

The Results Of Consecutive Superovulations In Cows By Induction With Various Exogenous Progesterone Routes, Numan Akyol, Sedat Hamdi̇ Kizil, Muharrem Satilmiş, Tahi̇r Karaşahi̇n, Serkan Erat Jan 2014

The Results Of Consecutive Superovulations In Cows By Induction With Various Exogenous Progesterone Routes, Numan Akyol, Sedat Hamdi̇ Kizil, Muharrem Satilmiş, Tahi̇r Karaşahi̇n, Serkan Erat

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to determine the possibility of yielding more transferable embryos from cows superovulated with/without exogenous progesterone (ear implant and intravaginal device). Two experiments were conducted in Holstein Friesian cows to evaluate the effect of exogenous progesterone on the yield of corpus luteum (CL), total embryo and ova, and transferable embryos before superovulation. A superovulation program using 2 different progesterone resources was applied (G1 = intravaginal device, G2 = ear implant). Superovulation and uterus irrigations were done at 28-day intervals in the treatment groups. Cows in the control group were superovulated at 60-day intervals without application …

Go to article

A New Approach To Neospora Caninum Infection Epidemiology: Neosporosis In Integrated And Rural Dairy Farms In Turkey, Naci̇ Öcal, Hasan Tarik Atmaca, Meti̇n Koray Albay, Ahmet Deni̇z, Hakan Kalender, Kader Yildiz, Oğuz Kul Jan 2014

A New Approach To Neospora Caninum Infection Epidemiology: Neosporosis In Integrated And Rural Dairy Farms In Turkey, Naci̇ Öcal, Hasan Tarik Atmaca, Meti̇n Koray Albay, Ahmet Deni̇z, Hakan Kalender, Kader Yildiz, Oğuz Kul

Turkish Journal of Veterinary & Animal Sciences

Both cattle and dogs were examined in modern and rural dairy farms that had a history of abortion over 5%. The blood samples were collected from 427 aborted cattle and the sera were tested using a commercial ELISA test kit. Additionally, a necropsy procedure was carried out on the fetuses and calves dead within 2 months after birth; the tissue samples were evaluated by histopathologic, immunoperoxidase, and PCR techniques. Eighteen dogs in close contact with the cattle in the same field were included in the study and blood and feces samples were collected. The feces samples were analyzed by copro-PCR …

Go to article

First Record Of Diplodinium Rangiferi Dogiel, 1925 (Ophryoscolecidae, Entodiniomorphida) From Domestic Cattle, Gözde Gürelli̇ Jan 2014

First Record Of Diplodinium Rangiferi Dogiel, 1925 (Ophryoscolecidae, Entodiniomorphida) From Domestic Cattle, Gözde Gürelli̇

Turkish Journal of Zoology

Diplodinium rangiferi was observed in rumen contents from a single animal out of 25 cattle surveyed in the area of Kastamonu, Turkey. It constituted 2.7% of the total ciliate population and had a 4% frequency of appearance. The size and percentage occurrence of this species in the present study are compared to those previously reported for other animal hosts living in different geographical locations. This study reports for the first time in Turkey and the world the naturally occurring presence of D. rangiferi in cattle.

Go to article

Relationship Between Degree Of Anemia And Blood Gases In Cattle With Theileriosis, Mehmet Temi̇z, Nuri̇ Altuğ, Nazmi̇ Yüksek Jan 2014

Relationship Between Degree Of Anemia And Blood Gases In Cattle With Theileriosis, Mehmet Temi̇z, Nuri̇ Altuğ, Nazmi̇ Yüksek

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to determine the relationship between the degrees of anemia and blood gases in cattle with theileriosis. It included 28 cattle with theileriosis and 7 healthy animals as the control group. The cattle with theileriosis were divided into 4 groups according to their hematocrit (Hct) values: cattle with Hct of >26 were considered as nonanemic (Group 1), Hct of 20-26 as mildly anemic (Group 2), Hct of 14-19 as moderately anemic (Group 3), and Hct of 10-13 as severely anemic (Group 4). The PCO_2, HCO_3, and TCO_2 levels in the study groups were lower than those of …

Go to article

Herd-Specific Autovaccine And Antibiotic Treatment In Elimination Of Staphylococcus Aureus Mastitis In Dairy Cattle, Danuta Czernomysy-Furowicz, Karol Fijalkowski, Anna Silecka, Jolanta Karakulska, Pawel Nawrotek, Radoslaw Drozd, Magdalena Ferlas, Jacek Borkowski, Dorota Jankowiak Jan 2014

Herd-Specific Autovaccine And Antibiotic Treatment In Elimination Of Staphylococcus Aureus Mastitis In Dairy Cattle, Danuta Czernomysy-Furowicz, Karol Fijalkowski, Anna Silecka, Jolanta Karakulska, Pawel Nawrotek, Radoslaw Drozd, Magdalena Ferlas, Jacek Borkowski, Dorota Jankowiak

Turkish Journal of Veterinary & Animal Sciences

The aim of the present study was to compare the effectiveness of cefuroxime, herd-specific autovaccine, and cefuroxime/herd-specific autovaccine treatments in eliminating S. aureus from the milk of 45 cows with subclinical mastitis. Prior to this study, cows with S. aureus mastitis were divided into 3 groups of 15 cows each. Group 1 received cefuroxime, group 2 received the autovaccine, and group 3 received cefuroxime and the autovaccine. The antibiotic was infused into the teat canal, whereas the autovaccine was administrated in the upper udder lymph node region. It was revealed that after day 35 of the treatment S. aureus was …

Go to article

The Micrornas Important For Ovarian And Early Embryonic Development In Cattle, Lei Wang, Jianbo Yao Jan 2014

The Micrornas Important For Ovarian And Early Embryonic Development In Cattle, Lei Wang, Jianbo Yao

Turkish Journal of Veterinary & Animal Sciences

Recent progress in genomic analysis and other biochemical methods has led to the discovery of a large population of microRNAs (miRNAs), which have been demonstrated to play important roles in diseases and a wide range of developmental processes. Characterization of miRNA expression profiles in different stages of ovarian follicular development and early embryogenesis has suggested the potential roles of miRNAs in follicular development, maturation of oocytes, and preimplantation embryonic development. This review focuses on the current studies of miRNAs involved in ovarian and early embryonic development in cattle.

Go to article

Methane Prediction By Nutrient Profiles In Ruminal Continuous Cultures Fed An All Forage Diet Of Bermudagrass Or Annual Ryegrass, Kaylin Young Dec 2013

Methane Prediction By Nutrient Profiles In Ruminal Continuous Cultures Fed An All Forage Diet Of Bermudagrass Or Annual Ryegrass, Kaylin Young

All Theses

Extensive research has been done on the effect of diet on rumen methane (CH4) production, and on developing equations to accurately predict CH4 in cattle. However, the majority of this research has been gathered from feedlot cattle or cattle fed a total mixed ration (TMR). To date, no studies have examined nutrient correlations with CH4 when feeding an all pasture diet of warm season or cool season grasses. This study included two in vitro experiments, one with a warm season forage and one with a cool season forage to see which nutrient characteristics of each forage best correlated with CH4 …

Go to article

Hair Shedding Scores Relating To Maternal Traits And Productivity In Beef Cattle, Ashton Williams May 2013

Hair Shedding Scores Relating To Maternal Traits And Productivity In Beef Cattle, Ashton Williams

Animal Science Undergraduate Honors Theses

The objectives of this study were to measure how quickly cattle shed their winter coat in the sub-tropical climate of Arkansas. As well as, to understand the role age may play on cattle shedding efficiency in spring and summer months, in conjunction with the relationship between mother hair coat and calf sex. Angus based commercial beef cattle (n = 224) were observed over a five-month period in 2012. Once monthly, at approximately 28-day intervals, cattle were evaluated for shedding on a scale from 1 to 5. A score of 5 indicated the cow/heifer had a full winter coat and a …

Go to article

Effect Of Forage Type And Corn Supplementation On Animal Performance And Meat Quality, Asher Wright May 2013

Effect Of Forage Type And Corn Supplementation On Animal Performance And Meat Quality, Asher Wright

All Theses

Angus x Hereford steers (441 ± 24 kg; n = 32) were used in a 2-yr study (2011 and 2012) to examine forage type (legume species, alfalfa and soybeans LG vs. grass species, tall fescue and sudangrass, GR) and daily corn supplementation (0%, NS, vs. 0.75% BW, CS) on animal performance and carcass quality. Steers grazed (May-August) for a total of 98 d and 105 d in 2011 and 2012 respectively. Upon completion of the finishing period, steers were slaughtered and carcass data were collected. Steaks (2.5 cm thick) from the longissimus dorsi muscle (LM) were collected for measurement of …

Go to article

Effect Of Residue Removal On Subsequent Year Quality And Quantity Of Corn Residue And Cattle Performance While Grazing Corn Residue At Different Stocking Rates, Adam L. Mcgee May 2013

Effect Of Residue Removal On Subsequent Year Quality And Quantity Of Corn Residue And Cattle Performance While Grazing Corn Residue At Different Stocking Rates, Adam L. Mcgee

Department of Animal Science: Dissertations, Theses, and Student Research

Two studies evaluated the impact of residue removal; study 1, grazed in the fall or spring, study 2, removed by grazing at two stocking rates, light (LG), heavy (HG), or baled(B). There were no differences in pre-grazing treatments for digestibility, CP, NDF, plant fraction as a percent of residue and kg/25.5 kg of grain. Digestibility was highest in husk and lowest in stem. CP was greatest in leaf blade and lowest in husk. NDF was highest in the leaf sheath and lowest in the cob while stem is the greatest percentage of the plant and husk the smallest. The fractions …

Go to article

2013 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University Jan 2013

2013 South Dakota Beef Report, Department Of Animal Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University

South Dakota Beef Report, 2013

This is the 2013 South Dakota Beef Report produced by the SDSU Department of Animal Sciences in conjunction with the Agricultural Experiment Station , and the SDSU Cooperative Extension. The articles published in this report summarize many of the beef cattle research activities conducted at South Dakota State University during 2013. The articles in this report have many levels of application. Some information has immediate application for your farm, ranch, or agribusiness. The articles include information on nutrition,management, health, growth and development, and economics of the cattle and beef industry in South Dakota.

Go to article

Utilizing Single Nucleotide Polymorphism Analysis In Determining Parentage Of Cattle, Nicole M. Elbert Jan 2013

Utilizing Single Nucleotide Polymorphism Analysis In Determining Parentage Of Cattle, Nicole M. Elbert

Undergraduate Honors Capstone Projects

Parentage identification within cattle herds is an important aspect of record keeping. It is essential for accurate registration within a purebred association and decision making for production purposes, such as replacement heifer and sire selection. Methods used to identify parentage have evolved from utilizing blood protein antigens, restriction fragment length polymorphism (RFLP) and microsatellites to the current technology of analyzing DNA profiles for differing single nucleotide polymorphisms (SNPs). In this preliminary study we analyzed genotype data from 1,066 samples obtained from various cattle breeds. These breeds included Holstein, Angus, Hereford, Irish Black, Jersey, Red Angus, Limousine, Charolais, Brown Swiss and …

Go to article

Analysis Of An Inkjet Printed Strip Assay For Pregnancy Test In Cattle, Alexandra Windley Kelley Jan 2013

Analysis Of An Inkjet Printed Strip Assay For Pregnancy Test In Cattle, Alexandra Windley Kelley

Undergraduate Honors Capstone Projects

Using commercially available antibodies, we created a modified ELISA strip assay to determine pregnancy in cattle. The anti‐progesterone antibody was printed on small membrane strips via an Inkjet printer. The strips were subsequently analyzed using varying concentrations of progesterone. The objective of this study was to assess this novel antibody printing process and to determine the binding activity of the anti‐progesterone antibody. The long‐term objective is to develop a pen-side pregnancy test that would cost less than $1.00. In this specific study, it was determined that the anti‐progesterone antibody used did not provide adequate sensitivity for visualization required for pen‐side …

Go to article

Effect Of Estradiol Supplementation On Blood Estradiol And Metabolite Levels, And Hepatic Protein Expression, In Growing, Mature, And Senescent Beef Cattle, Edwena D. Miles Jan 2013

Effect Of Estradiol Supplementation On Blood Estradiol And Metabolite Levels, And Hepatic Protein Expression, In Growing, Mature, And Senescent Beef Cattle, Edwena D. Miles

Theses and Dissertations--Animal and Food Sciences

Estradiol (Compudose®, COM) implants are extensively used in beef cattle production systems to alter body composition and feed efficiency. Little information exists about the physiological mechanisms affected by COM treatment in growing, mature, and senescent female cattle. Moreover, no reports describe the level of blood estradiol resulting from COM treatment. The effect of COM on levels of plasma estradiol and blood metabolites and proteins, and relative content of glutamine synthetase (GS) and other amino acid nitrogen-metabolizing enzymes in liver tissue, was studied using three experimental models relevant to cow-calf production regimens: senescent cows (Trial 1), young mature (young) versus senescent …

Go to article

Endometritis In Simmental Cows: Incidence, Causes, And Therapy Options, Robert Zobel Jan 2013

Endometritis In Simmental Cows: Incidence, Causes, And Therapy Options, Robert Zobel

Turkish Journal of Veterinary & Animal Sciences

The objectives of this study were to evaluate endometritis incidence and possible causes, and to assess the different therapy options. From a total of 1300 cows, endometritis was diagnosed in 23.07%, with clinical endometritis in 15.31% and subclinical endometritis in 7.77%. Previous dystocia resulted in 40.59% of the clinical endometritis and 47.52% of the subclinical endometritis (P < 0.05). Placental retention caused clinical and subclinical endometritis in 43.18% and 37.50% of the cows, respectively (P < 0.05). Body condition score 2 resulted in the highest endometritis rate and body condition score 3-4 resulted in the lowest endometritis rate (P < 0.05). Corpus luteum was found in 9.67% of the cows suffering from endometritis, while the rest developed various types of subfertility (P < 0.05). Three groups of cows (A, B, and C) with an almost equal number of clinical and subclinical endometritis diagnoses were formed. All of the groups received prostaglandin analogues (PGF Veyx Forte®, Veyx Pharma) intramuscularly 3 times at 11 day intervals. In group A, only prostaglandins were used; in group B, cephapirin (Metricure®, Intervet Schering-Plough) was administered into the corpus uteri simultaneously with the first 2 doses of prostaglandins; and in group C, the first 2 doses of prostaglandins were followed by the ozone product Riger Spray (Novagen, Italy) applied into the uterus. The criteria applied for the therapy success were the number of cows conceived after the first artificial insemination and the number of days open. The best therapy results were achieved in groups C and B (P < 0.05), with the advantage of no milk and meat withdrawing period in the animals of group C.

Go to article

Effects Of Different Weaning Management Strategies On Preconditioning Performance, Haptoglobin Serum Levels, Feedlot Morbidity, And Carcass Characteristics, Jake Everitt Anderson Jan 2013

Effects Of Different Weaning Management Strategies On Preconditioning Performance, Haptoglobin Serum Levels, Feedlot Morbidity, And Carcass Characteristics, Jake Everitt Anderson

LSU Master's Theses

Weaning, one of the first major stressors encountered by the calf, has a negative effect on the immune system and increases the likelihood of infection of novel pathogens such as those that cause bovine respiratory disease. Fenceline contact at weaning has been shown to reduce the stress on the calf during the time following maternal separation. Preconditioning programs have been shown to reduce feedlot morbidity and mortality. Combining these two management practices could reduce the length of time calves need to be held in a preconditioning program. A multi-year study was conducted to evaluate if fenceline weaning will allow for …

Go to article

A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey Jan 2013

A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey

LSU Master's Theses

The objective of this study is to evaluate the association of single nucleotide polymorphisms with growth, performance, and carcass quality and composition characteristics in a population of cattle consisting of multigenerational Angus sired calves and modern characteristic Charolais sired calves. A total of 132 calves were evaluated. Due to a limited sample population statistical difference was set at p ˂ 0.05 and statistical trends were set at p ˂ 0.1. Mean birth weights were significantly higher for Charolais sired calves as compared to Angus sired calves. Significant differences were observed between the two breed types for mean weaning weights with …

Go to article

Financial Losses From Foot Diseases In Cattle Farms In Kars Province, Pinar Demi̇r, Sadik Yayla, Özgür Aksoy, İsa Özaydin Jan 2013

Financial Losses From Foot Diseases In Cattle Farms In Kars Province, Pinar Demi̇r, Sadik Yayla, Özgür Aksoy, İsa Özaydin

Turkish Journal of Veterinary & Animal Sciences

This study was performed via a survey conducted of a total of 112 cattle operations in Kars and the vicinity and included a total of 2317 head, of which 280 were determined to have foot problems. The financial loss incurred per operation was calculated in accordance with the data obtained. As a result, the prevalence of foot disease encountered in cattle in the region in 2010 was determined to be 12.08%, and although it varied depending on the severity of the foot diseases, the animals were healed in an average of 46.5 days. Live weights declined by an average of …

Go to article

First Prev Next Last