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Cattle Breeds and Reproductive Characteristics Effects of Genotype and Season on Blood Chemistry Parasitic load and Sperm Reserves of some Nigerian Bull cattle
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Cattle Breeds and Reproductive Characteristics: Effects of ~ Cattle Breeds and Reproductive Characteristics: Effects of Genotype and Season on Blood Chemistry, Parasitic load and Sperm Reserves of some Nigerian Bull cattle [Philip, Addass] on . *FREE* shipping on qualifying offers. Cattle Breeds and Reproductive Characteristics: Effects of Genotype and Season on Blood Chemistry, Parasitic load and Sperm Reserves of some Nigerian Bull cattle
Genetic Practices to Improve Beef Cattle Reproduction ~ Although providing a good environment for cattle is essential to reproductive success, there are also genetic practices that can be implemented to improve the likelihood of acceptable reproduction. For commercial producers it is important to implement a good crossbreeding program to provide the best opportunity for high reproduction rates.
Breeding & Genetic Selection ~ The beef cattle industry is composed of six basic segments: Purebred Breeder; Commercial Producer; Stocker or Backgrounding Operations . contributing more to the genetic makeup of a herd in one breeding season than a cow contributes in her lifetime. Selecting genetically superior sires is the fastest approach to herd improvement and .
Reproductive Disorders in Cattle due to Nutritional Status ~ the influence of blood flow and concentration. Nutrition or perhaps more specifically certain food nutrients can influence the hormonal status of the animal at several levels. Inadequate intake of nutrients or inadequate body reserves, needed to meet production requirements, after calving, results in suppressed reproductive performance in cattle.
Genetic characterization of indigenous cattle breeds in ~ diversity. During characterization, blood from two to three animals from each kraal was sampled for DNA analysis and subsequent genotyping. The number of samples collected to date total about 300. Table 1: Productive and performance characteristics of indigenous cattle breeds Cattle Breed Angoni Tonga Barotse
Cattle Types and Breeds Characteristics and Uses ~ breeds or types, there is usually a trade-off between yield grade and quality grade. As one increases, the other declines. Breeds and functional types Table 1 lists characteristics of the major breeds of cattle in Texas — those most numerous or most familiar in the state — by estimates of purebred breed-wide averages.
Genetic characterization of indigenous cattle breeds in ~ During characterization, blood from two to three animals from each kraal was sampled for DNA analysis and subsequent genotyping. The number of samples collected to date total about 300. Table 1. Productive and performance characteristics of indigenous cattle breeds.
Selection and Breeding of Cattle in Asia: Strategies and ~ local cattle population to 75% or more of exotic genotype, but they are often not successful due to incompatibility of the genotypes with farmers’ breeding objectives and the production systems. Choice of the exotic breeds usually depends on milk production, early maturity, and compatibility with local breeds, especially related to body size.
The implications of cattle domestication ~ evolution. Some cattle became specialised dairy or specialised beef breeds while others were dual-purpose breeds supplying both these products. Physical work has always been a product but now horses and tractors have taken over this role. In many developing countries, cattle are still a sign of wealth and prestige.
8 concepts to breed grass-efficient cattle / Farm Progress ~ 2. Do not confuse frame size and weight. We do not want tall cattle. We want cattle that are heavy relative to their frame size (8-in-5 packages). The smaller and heavier the better ! 3. Genetic change comes through the bull. To identify a good bull you first need to identify a good cow. Culling cows has more economic than genetic value. 4.
Beef Cattle Breeding, Genetics, Reproduction / UNL Beef ~ Adequate nutrition during the breeding season critical for reproductive success (July 2012) Environmental Influences on Reproduction (April 2011) Cow Disposition affects Pregnancy Rate (May 2010) Bull Management in Multi-sire Pastures (April 2010) Short Term Calf Removal May Help After Tough Winter (March 2010) Trichomoniasis, a New Challenge .
List of Cattle Breeds in the World - Livestocking ~ Cattle are one of the most important sources of animal protein in the world. Beef (meat of cattle) is consumed in virtually all the countries in the world. There are numerous cattle breeds across the globe. There are beef cattle; dairy cattle; and dual-purpose cattle. The beef cattle breeds are
Cattle Breeding: Improve Reproductive Efficiency / Drovers ~ Finally, the bull must be factored in to conception rates. Dr. Anderson said that often cows shoulder the blame for fertility issues when the problem may in fact, be the bull. Bulls should have a breeding soundness exam 30 days before the beginning of the breeding season and only those bulls that easily pass the exam should be considered. Dr.
Genetic Effects on Reproduction in Beef Cattle - KANSAS ~ In most breeds of beef cattle, reproductive traits are unmeasured or not included in genetic evaluation protocols, despite the economic importance of these traits. This project will determine genetic relationships between reproductive, production and carcass traits using breed association and other industry databases, and determine the utility of using these data in genetic evaluation.
Breed Selection - Pharo Cattle Company ~ Breed Selection Not every breed has the type of cattle that can meet the requirements established by our philosophy. We have studied many different breeds to find cattle with the biological type most suited to our environment and our philosophies. Our focus has always been on low-maintenance cattle with strong maternal traits. Our seedstock program includes Red Angus, Black Angus, Hereford .
Colouration and Genetics in Cattle / BackYardHerds - Goats ~ Breeds & Breeding - Cattle Colouration and Genetics in Cattle . the physical characteristics of an animal. Genotype is in reference to the type of genes that has animal has that cannot be seen unless that animal is bred to another animal of similar phenotype or has his/her DNA tested. Some more definitions to know:
Cattle Breeds: Best Breeds For Cattle Farming Business ~ The cattle breeds are classified below on the basis of their origin and production purpose. On the Basis of Production: According to the effectiveness and production of milk and meat, the cattle breeds are of four types. Milk Breed: This types of cattle breed become highly milk productive. Some famous milk productive cattle breeds are holstein friesian, sahiwal, jersey, red sindhi, brown swiss .
The Economics of Gene Testing Cattle ~ by genotype interactions. Differences in profitability ranged from $15 to $39 per year depending on breed. To summarize, little is known to date about profitability differences due to cattle genotypes. Only a few studies have explicitly considered genotype. All of those studies investigated mutations associated with the leptin gene (Table 4). Since
Cattle Breeds - an overview / ScienceDirect Topics ~ Parturition is similar as in dairy cattle, but beef cattle do not experience the post-partum negative energy balance that dairy cows do and have comparative ease to become pregnant again. Specialist breeds of beef cattle are adapted to adverse conditions, e.g., tropical climates, which have led to some interesting reproductive functions.
Genotype by environment interaction and breeding for ~ Mattar et al. (2011) investigated the presence of genotype × environment interactions for long-yearling weights of Brazilian Canchim cattle using reaction norms of the trait as a response to a “contemporary group” effect that combined year and season of birth, sex, genetic group of dam, herd at weaning and long-yearling, and feeding .
Breeding Dairy Cattle - ACS Distance Education ~ Some strains are good milkers and others are better beef producers. The old triple purpose cattle that were kept for milk, beef and work did not do any of these things particularly well. There are a large number of possible characteristics or points for selection for different types of livestock. Have a Clear Aim
Beef Cattle Breeds and Biological Types ~ Beef Cattle Breeds and Biological Types Scott P. Greiner, Extension Animal Scientist, Virginia Tech Worldwide there are more than 250 breeds of beef cat-tle. Over 60 of these breeds are present in the United States. However, a relatively small number of breeds (less than 20) constitute the majority of the genetics
The Livestock Conservancy ~ The Livestock Conservancy works to protect livestock and poultry from extinction including asses, cattle, goats, horses, sheep, pigs, rabbits, chickens, ducks, geese .
Genetic analysis of days open in beef cattle - ScienceDirect ~ 1. Introduction. In dairy cattle, breeders pay a great deal of attention to days from calving to conception, also called days open (DO), because despite its low heritability, this trait seems to be clearly related to the cow's reproductive performance and profitability, as well as to its lactation yield (Freeman, 1984, Philipsson, 1981, Kirkpatrick, 1998).
Recent Developments in Genetic Evaluations - Beef Cattle ~ Summary: The application of genomics to improve the accuracy of EPDs is a rapidly developing field. There are ongoing improvements in genotyping and sequencing technologies, statistical methods to increase the correlation between genomic predictions and true genetic merit, and the computing systems to handle the large datasets associated with animal breeding.