“The main point about cattle that grade Prime is that they have the genetic ability to marble, and it is not because they are fat,” he says, noting results of three National Beef Quality Audits. FAQs Scrotal Circumference – measure of genetic merit for scrotal circumference. JavaScript seems to be disabled in your browser. Genetic improvement, including selection between breeds, crossing and within-breed selection, is widely used in farm livestock and has led to dramatic changes in performance in dairy and beef cattle … Calf performance differences may also be compared among herd sires. the beef cattle industry depend on continued improvement in productive efficiency “The main point about cattle that grade Prime is that they have the genetic ability to marble, and it is not because they are fat,” he says, noting results of three National Beef Quality Audits. Feedyard, News Herbs, native plants, & reference desk QA. Genetic improvement is about producing the best genotypes of cattle to suit a specific beef enterprises, and genetic gain is cumulative, permanent and relatively cheap. Black Ink, © 2020 Certified Angus Beef LLC, All rights reserved. Base the type of sire selected on the purpose of for each cow-calf operation. See Table 1 for specific levels of heterosis and  its potential impact. Heifer Pregnancy – predicts the probability of a bull’s daughters becoming pregnant as first-calf heifers during a normal breeding season. Some traits of cattle are under genetic control (heritable) and can be exploited to increase herd profitability. Assess the merits of within-breed selection, changing breeds or crossbreeding. Selection of sires is a critical control point in the operation of an effective breeding program. Webinar by Dr. Dan Kniffen. The Pennsylvania State University, 323 Agricultural Administration Building, University Park, PA 16802. In other situations, genetics can change the way you manage the herd (eg reduced need for supervision at calving) and reduce operational costs (eg easier management resulting from selection for better temperament). However, it is important to remember that although genetic correlations can sometimes create the need to exercise … Genetics Selection Tools in Beef Cattle EPDs and Antagonisms. http://www.cabpartners.com/news/research/index.php. This module will assist the discerning commercial breeder whose main avenue for ongoing genetic improvement is through buying-in bulls or semen. Genetic improvement should be continuous, and the most important variable that will limit continuous improvement is inbreeding. We use cookies to ensure that we give you the best experience on our website. Heritability is the part of the variance in an observed trait after allowing for environmental factors. Guiding entrepreneurs from concept to profit. Among those were comparisons of high- and low-marbling-EPD registered Angus bulls bred to composite cows at the USDA Meat Animal Research Center. Progeny were fed and harvested in two groups 60 days apart. relevant traits. For traits such as Stayability, Heifer Pregnancy and 30-month Pregnancy, where knowledge of a successful or unsuccessful pregnancy is critical, WHR has a clear advantage. Males account for approximately 90% of the gene pool, contributing more to the genetic process. Improvement of the next generation calf crop is dependent upon the breeding decisions Find tactics for healthy livestock and sound forages. Journal of animal science, 86(12), 3348-3357. ii Åby, B. The replacement heifer becomes the genetic building block for the cow herd. It also considers the implications of changing breeds or crossbreeding, and provides a guide to selecting the best bulls for your enterprise and setting up a mating program. disease or trait). Artificial insemination can bring positive changes to crossbreeding programs, as well. Your email address will not be published. which were last updated in March 2019. records. There are many advantages to green grass calving when compared to late winter early spring calving. Some circumference and pelvic size. combination of traits that complement the strengths and weaknesses of the cow herd

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