2 edition of Evaluation of nutritional and genetic effects on female reproductive performance in beef cattle found in the catalog.
Evaluation of nutritional and genetic effects on female reproductive performance in beef cattle
Christopher J. Roeder
Written in English
|Statement||by Christopher J. Roeder.|
|The Physical Object|
|Pagination||viii, 61 leaves, bound :|
|Number of Pages||61|
Reproductive performance is influenced by many factors, including sire fertility, herd health aspects, and opportunities to mate. Breeding soundness evaluation is a technique to assess the reproductive performance of the cow herd. It includes obtaining relevant information, analysis and interpretation, and recommendations for improvement. Optimizing efficiency in the cow-calf sector is an important step toward improving beef sustainability. The objective of the study was to use a model to identify the relative roles of reproductive, genetic, and nutritional management in minimizing beef production systems' environmental impact in an economically viable, socially acceptable manner. Abstract. The study was conducted to estimate calf growth, reproductive performance and milk yield of Ethiopia Sheko cattle and to assess non-genetic factors affecting their performance in their home tract as a step towards designing sustainable Cited by: 1.
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Increased genetic capability for milk production coupled with changes in nutritional management and larger herd size have been associated with a decline in fertility of lactating cows (Fig. 1; Butler,Darwash et al., ).Nutritional requirements shift abruptly at parturition as milk production rapidly increases and cows enter negative energy balance (NEBAL).Cited by: Excellent reproductive performance in both males and females is fundamental to profitable dairy and beef production systems.
In this review we undertook a meta-analysis of genetic parameters for female reproductive performance across 55 dairy studies or populations and 12 beef studies or populations as well as across 28 different studies or populations for Cited by: Bazan O.
Munoz H. Deaton O W and Vohnout K. () Reproductive performance of beef cattle in Costa Rica. Memoria, Asociacion Latinoamericana de Produccion Animal 54 (Animal Breeding Abstracts ). Bazer F W. () A twenty-year summary of heterotic effects on reproduction in Florida cattle.
In: MAuthor: Nematollah Dayyani, Keyvan Karkudi, Hasan Bakhtiari. Optimising reproductive performance of beef cows and replacement heifers Article Literature Review (PDF Available) in animal 8(s1) April. 12 beef studies or populations as well as across 28 different studies or populations for male reproductive performance.
A plethora of reproductive phenotypes exist in dairy and beef cattle and a meta-analys is of the literature suggests that most of the female reproductive traits in dairy and beef cattle tend to be lowly heritable ( to ). S.H. Evaluation of nutritional and genetic effects on female reproductive performance in beef cattle book, B.G.
Lowman, D.W. Deas, The effect of plane of nutrition during lactation on the reproductive performance of beef cows Vet Rec () J.C. Spitzer, Influence of nutrition on reproduction in beef cattle D.A. Morrow, Current Therapy in Theriogenology ed 2 () WB Saunders Co Philadelphia Cited by: The study was conducted to estimate calf growth, reproductive performance and milk yield of Ethiopia Sheko cattle and to assess non-genetic factors affecting their performance in their home tract as a step towards designing sustainable Cited by: 1.
Nutritional interactions with reproductive performance in dairy cattle Article Literature Review (PDF Available) in Animal Reproduction Science August with 3, ReadsAuthor: Walter R Butler. Reproductive efficiency (fertility) determines to a great extent the profitability of the beef cattle enterprise.
Income from a beef cattle herd comes from the sale of progeny or the sale of salvageable animals in the breeding herd itself. There is no disputing the level of importance reproduction has when compared to other Size: KB.
Proceedings, Applied Reproductive Strategies in Beef Cattle November 1 and 2,Lexington, Kentucky REPRODUCTIVE EVALUATION OF HEIFERS John B. Hall, Ph.D. Department of Animal & Poultry Sciences Virginia Tech, Blacksburg, VA Development of replacement heifers is a crucial enterprise in the cow/calf Size: KB.
Effects of Nutrition on Beef Cow Reproduction T he nutritional quality of feeds and forage can have a tremendous influence on the reproductive performance of cattle.
Although reproductive failure may occur for several reasons, management and the environment are often important contributing Size: KB. The reproductive performance of the herd or animal is a key indicator of sustainability of a dairy farming system.
However, assessment of productive and reproductive performance depends on composite parameters to assess overall performance evaluation (Islam et al ).
Of course, there are several key factors that determine reproductive performance in females, and George Perry discussed these factors at the Applied Reproductive Strategies in Beef Cattle Workshop at the Cattle Industry Annual Convention in San Antonio, TX on Jan.
29, Achieving high reproductive performance in beef herds by Michael G. Diskin Introduction As calves are the major output, reproductive efficiency is a key factor determining profitability in the beef herd.
What are the main reproduction targets for a beef cow herd. What determines the reproductive efficiency of the cow or heifer. REPRODUCTIVE PERFORMANCE IN DAIRY CATTLE 9 and egg or ovum.
The liberation of the egg usually occurs toward the latter part of the heat period, or the first day following estrum. The rupturing of the follicle is directly due to two factors, an increased pressure within the fol-licle and a weakening of the follicular walls.
Effects of maternal nutrition on conceptus growth and offspring performance: implications for beef cattle production. Funston RN(1), Larson DM, Vonnahme KA. Author information: (1)West Central Research and Extension Center, University of Nebraska, North Platte, NEUSA.
[email protected] by: The objective of this study was to determine whether or not reproductive performance in cattle produced by somatic cell nuclear transfer (SCNT) is significantly different from that of their genetic donors. To address this question, we directed two longitudinal studies using different embryo production procedures: (1) superovulation followed by artificial.
desirable beef. productive efficiency and carcass merit. performance traits, both positive and negative, should difficulty as a result of heavy birth weights can cut Chapter 3 Beef Cattle Selection The goal of beef cattle production is to provide highly desirable beef.
Nutritional Management. Proper nutrition is extremely important in managing first-calf heifers. In order to initiate and sustain reproductive functions such as maintenance of pregnancy and lactation, first-calf heifers often require additional energy inputs because they are.
The percentage of body fat in beef cows at spe-cific stages of their production cycle is an important determinant of their reproductive performance and overall productivity. The amount and type of winter supplementation required for satisfactory perfor-mance is greatly influenced by the initial body reserves, both protein and fat, of the cattle.
Current genomic applications for improved reproductive performance in beef and dairy Kent J. Andersen, Jason B. Osterstock Zoetis Centennial, CO Abstract Genetic improvement in beef and dairy cattle reproductive traits has historically been hampered by the availability and accuracy of applicable genetic predictions.
Impact of Reproductive Technologies on Genetic Improvement in Beef Cattle Introduction Reproductive processes can be compromised at many different stages in both male and female cattle. Reproduction can, therefore, be compromised at gametogenesis (egg and sperm production and development), joining of the.
Nutrition has an important impact on the reproductive performance of dairy cattle. Energy is the major nutrient required by adult cattle and inadequate energy intake has a detrimental impact on reproductive activity of the female bovine.
Cows under negative energy balance have lowered plasma glucose, insulin, and insulin - like growth factor-I. Cattle health and reproductive diseases.
The health and condition of cattle have a direct impact on their reproductive capacity. Reproductive diseases exist that affect both the male and female reproductive ability.
The key to preventing reproductive disease is vaccination and good management practices. to reduce reproductive performance.
More recently it has been found that reproductive performance may be impaired if protein is fed in amounts that greatly exceed the cow’s requirements. Over-feeding of DIP either as protein or urea has been associated with decreased pregnancy rates in female dairy and beef cattle [4,45].
Moorey’s efforts combine reproductive management with genomics technologies and bioinformatics to contribute advancements of knowledge in follicular contributions to pregnancy success, nutritional effects on pregnancy outcome, and.
genetic influences of age at puberty and calving difficulty on reproductive performance of young beef females. Age at Puberty and Reproductive Tract Score - Since age at puberty is difficult to measure directly, a method for evaluating the reproductive tract of yearling heifers has been developed at Colorado State University (Anderson et al., ).
Identifying nutritional managements systems that optimize feed resources will have significant impact on profitability of cow-calf operations. In any beef operation, there are multiple periods when nutritional and management interventions can have long-term consequences for the cattle performance and system profitability.
Those critical periods include: 1) fetal and postnatal calf. The tools that modern-day cattle producers have available to them are extensive, and the implementation of herd-appropriate management, along with input from health, nutrition, reproduction and genetic professionals, has allowed for.
Exposure to various types of toxins can also impact reproductive performance. One of the most common areas of concern in Western Canada following a few more wet than average growing seasons was an increase in the amount of ergot. Ergot has a number of effects on cattle including an increased risk of abortions.
tional paradigms that have been studied in the beef cow and how nutrition during pregnancy affects pre- and postnatal growth and development of the calf. Although this review primarily focuses on maternal nutrition in.
Effects of maternal nutrition on conceptus growth and offspring performance: Implications for beef cattle production. reproductive performance in beef herds. The objective of this study, therefore, was to estimate genetic parameters for reproductive performance in beef herds. Genetic correlations between reproduction traits and other nationally recorded traits including live weight, docility, linear type traits, and carcass traits were also es-timated.
The impact of quantitative genetics on productive, reproductive and adaptive traits in beef cattle LV Cundiff US Meat Animal Research Center, Agricultural Research Service, US Department of Agriculture, Clay Center, Nebraska USA Introduction Efficiency of beef production has been impacted greatly by implementation of genetic evaluation.
order to get good reproductive performance: 1. Balanced feeding is necessary throughout the year (lactation, gestation, dry period). Reproduction can be affected by both an excess as well as a nutritional deficiency.
Interactions exist between the factors affecting fertility so that the combined effects are Size: 96KB. Reproductive Diseases of Beef Cattle Jeremy Powell, DVM.
Reproductive disease such as. Extension Veterinarian. infertility and abortion can lead to. major economic losses for beef cattle are many potential causes that lead to reproductive disease in File Size: KB. The aim of this investigation was to study the influence of maternal effects on the genetic evaluation of sire production in Tabapuã beef cattle.
Single and multiple trait analyses were done with adjusted animal weights atand days of age. Antagonism was observed between additive direct and maternal genetic effects, with the. Evaluation of non‑genetic factors affecting calf growth, reproductive performance and milk yield of traditionally managed Sheko cattle in southwest Ethiopia E.
Bayou1*, A. Haile2, S. Gizaw3 and Y. Mekasha3 Background Although, cattle have a very important role in the economies of the farmers and theCited by: 1.
Successful reproductive management is essential for profitable milk production. Since milk is the major source of income on dairy farms, the goal of the farmer is to maximize milk production.
Delayed conception – and suboptimal reproductive performance in general - lead to decreased milk yield per time unit (Ózsvári, ). Cow Condition and Reproductive Performance. Julie Walker and George Perry South Dakota State University Department of Animal and Range Sciences.
Download PDF version of this report. INTRODUCTION. It has been understood for decades that reproductive performance is the most important factor affecting production efficiency of a cow-calf enterprise.
MAJOR PERFORMANCE TRAITS OF BEEF CATTLE _-; 22 Reproductive Performance or Fertility 22 Birth Weight 23 Nursing or Mothering Ability 23 Growth Rate.- 25 Economy of Gain.
26 Longevity Carcass Merit 28 Conformation Evaluation in Beef Cattle 32 CENTRAL TESTING STATIONS 34 HEREDITARY DEFECTS OF BEEF CATTLE.
Genetic Effects on the Productivity of Beef Cattle A. Phillips, Meat and Livestock, Alice Springs INTRODUCTION The physical features we observe and performance characteristics we can measure in cattle are called traits. Both the animal's genes, and the environment in which it lives, shape its traits.
Economically important traits inFile Size: 34KB. Reproductive performance of the U.S. beef herd has not changed in the last 20 years, and beef cattle inventory in the U.S. has declined concurrently. Global demand for red meat will continue to rise with rapid population growth and economic development.
The overall goal of this proposal is to develop educational opportunities and nutritional strategies for .In conclusion, beef cattle consuming low-quality cool-season forages had similar ruminal forage disappearance and intake, performance, and physiological status if offered supplements based on soybean meal or corn at approximately % of BW (DM basis).Author: Bruno Ieda Cappellozza.