Effects of Performance Testing on Superovulatory Response in Juvenile Simmental Heifers

1994 ◽  
Vol 1994 ◽  
pp. 20-20
Author(s):  
L.D. Tregaskes ◽  
P.J. Broadbent ◽  
J.A. Roden
Keyword(s):  
Test Performance ◽  
Performance Test ◽  
Performance Testing ◽  
Meat Production ◽  
Gestation Length ◽  
Multiple Ovulation ◽  
Agricultural College ◽  
Relationship Of ◽  
The Relationship ◽  
Calving Difficulty

Multiple ovulation and embryo transfer (MOET) is being used by the Scottish Agricultural College, Aberdeen to accelerate genetic change in the Simmental breed. The selection goal of the project is improving the efficiency of lean meat production. The factors in this goal are saleable meat (predicted from liveweight, fat depth and muscling score), food intake and calving difficulty (predicted from gestation length and birth weight). Success of the project depends on the generation of sufficient grade 1 embryos from selected donor heifers in a 12 week period following a performance test. Performance testing to assess beef characteristics can produce precociously fat heifers which may be detrimental to embryo production. The onset of puberty in heifers is also highly variable and influenced by many factors including body weight and nutrition. The objective of this study was to examine the relationship of superovulatory response to performance on test and age at the onset of puberty.

Selecting terminal beef sires on their estimated breeding values for economic efficiency

1995 ◽  
Vol 1995 ◽  
pp. 127-127
Author(s):  
Margaret E King ◽  
P J Broadbent
Keyword(s):  
Economic Efficiency ◽  
Feed Intake ◽  
Performance Test ◽  
Production Systems ◽  
Selection Index ◽  
Performance Testing ◽  
Breeding Value ◽  
Gestation Length ◽  
Beef Production ◽  
Calving Difficulty

The selection objective of the SAC Simmental MOET Project, is to improve the economic efficiency of lean, or saleable, meat production in crossbred beef production systems.The factors which contribute to the selection objective are the yield of saleable meat, feed intake and calving difficulty. These goal characteristics are combined into an index by taking into account their respective financial values and costs. Calves generated by multiple ovulation and embryo transfer (MOET) are weaned from their recipient dams at 10 weeks old and placed in performance test from 5 to 11 months of age. At the end of the performance test, saleable meat yield is estimated from liveweight at end of test, ultrasonic fat depth measurements and muscling score. Calving difficulty is predicted from the birthweight and gestation length of the animal on test whilst feed intake is measured directly by recording individual food intakes during performance testing. The estimated breeding value for the selection index of an animal is expressed in £'s (pounds sterling) as deviations from a mean of zero for the SAC population of Simmentals. It is calculated using the information for each animal plus that of all its relatives in its own and other performance tests by means of BLUP procedures.The objective of the work described here was to evaluate the effectiveness of the selection index in identifying sires of superior genetic merit for use in crossbred beef production systems.

Study on the Test System of ERF's Performance

2013 ◽  
Vol 579-580 ◽  
pp. 813-817
Author(s):  
Xin Sheng He ◽  
Peng Huang ◽  
Kai Fei ◽  
Xiao Yi Zhang ◽  
Wei Zeng Chen ◽  
...  
Keyword(s):  
Shear Stress ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Apparent Viscosity ◽  
Performance Test ◽  
Performance Testing ◽  
Test System ◽  
Relationship Of ◽  
The Relationship

Electrorheological fluid (ERF) is a new kind of smart materials, which has a great deal of market value and broad application prospects. To meet the needs of the ERFs performance testing, design and produce of the ERF's performance test system are based on the relationship of the apparent viscosity, shear stress and electric field strength. Select the NDJ-8S digital viscometer, high voltage DC power supply, liquid container, and other parts to constitute the ERFs performance test system after considering the relationship of the apparent viscosity, shear stress, shear rate and electric field strength. The system has potentials to control voltage, change velocity, change the distance between the parallel panels, and test the yield stress of the ERF, shear stress, viscosity and other parameters. The study introduces the hardware and software device, the related experiments, and obtains the relationship of the viscosity, rotational speed, voltage, and plate gap.

Meat without Animals: Outcast Objects and the Improvement of London

2018 ◽  
Author(s):  
Ted Geier
Keyword(s):  
Animal Rights ◽  
Legal Reform ◽  
Meat Production ◽  
History Of ◽  
Relationship Of ◽  
The Relationship

Covers the long history of the Smithfield animal market and legal reform in London. Shows the relationship of civic improvement tropes, including animal rights, to animal erasure in the form of new foodstuffs from distant meat production sites. The reduction of lives to commodities also informed public abasement of the butchers.

The Joint Relationship of Conscientiousness and Ability with Performance: Test of the Interaction Hypothesis

1999 ◽  
Vol 25 (5) ◽  
pp. 707-721 ◽  
Author(s):  
Michael K. Mount ◽  
Murray R. Barrick ◽  
J. Perkins Strauss
Keyword(s):  
Job Performance ◽  
Performance Test ◽  
Employee Selection ◽  
Hierarchical Regression ◽  
Limited Evidence ◽  
Interaction Hypothesis ◽  
Supervisory Ratings ◽  
Relationship Of ◽  
The Relationship ◽  
Practical Implications

This study investigated whether conscientiousness and ability interact in the prediction of job performance. Although few studies have directly addressed this issue, there is limited evidence that ability moderates the relationship between conscientiousness and job performance. Specifically, it has been reported that the relationship of conscientiousness to performance is positive for high ability and near zero or negative for low ability. Results in the present study provided no support for the interaction of GMA and conscientiousness. Moderated hierarchical regression analyses for three independent samples of participants (146 managers in sample 1, 103 sales representatives in sample 2, and 121 managers in sample 3), showed that the interaction did not account for unique variance in the prediction of supervisory ratings of job performance beyond that accounted for by GMA and conscientiousness. These findings indicate that ability does not moderate the relationship of conscientiousness to job performance. Practical implications for employee selection practices, and theoretical implications for models of job performance, are discussed.

scholarly journals GENETIC IDENTIFICATION AS THE CRITERION OF PRIMARY ERRORS BEHIND THE REGISTRATION OF CATTLE ON THE TERRITORY OF THE URALS FEDERAL DISTRICT

2020 ◽  
Author(s):  
Я.А. КАБИЦКАЯ ◽  
Л.А. КАЛАШНИКОВА ◽  
Е.Г. БОЙКО ◽  
А.Е. КАЛАШНИКОВ
Keyword(s):  
Nuclear Dna ◽  
Genetic Relationships ◽  
Molecular Genetic ◽  
Quality Standard ◽  
Mendelian Inheritance ◽  
Genetic Identification ◽  
Meat Production ◽  
Technical Data ◽  
Relationship Of ◽  
The Relationship

Для организации селекционно-племенной работы необходимо уточнение данных о родстве потомков крупного рогатого скота молочного и мясного направлений продуктивности при помощи молекулярно-генетических методов. Для осуществления этой задачи производилось сравнение данных первичного учета о родстве животных из информационно-аналитической системы (ИАС) СЕЛЭКС с менделевским наследованием генотипов от родителей потомкам, определенных при помощи ДНК тестирования. В качестве определения родства использовался простой и доступный метод анализа микросателлитных локусов ядерной ДНК. Для выполнения исследований создан и систематизирован банк образцов ДНК животных (крупный рогатый скот молочного и мясного направлений продуктивности) в количестве 4716 голов. Показана степень ошибочных записей в родословной потомков по данным первичного учета и результатов генотипирования на адаптированной панели 15 микросателлитных участков ядерного генома животных предприятий Тюменской и Курганской областей, а также ХМАО-Югра. Из 531 «троек» (мать-потомок-отец) животных молочного направления продуктивности выявлено не менее 88% совпадений по обоим родителям. По родителям для черно-пестрой породы выявлено до 3% ошибочных записей в родословной потомков, для голштинской – до 11%. Для мясных пород животных величина ошибок по генетической идентификации для абердин-ангус составила до 10% и герефорд – до 25%. Установлено, что микросателлиты являются инструментом для определения достоверности происхождения по международному стандарту и проверки данных первичной регистрации зоотехнических данных и генетической идентификации крупного рогатого скота молочного и мясного направлений продуктивности. It is necessary to clarify data on the relationship of cattle progeny in the directions of dairy and meat production by molecular genetic methods and organization of breeding work. To accomplish this task, a comparison of primary registration data on the relationship of animals from the information-analytical system (IAS) was carried out taking into computation the Mendelian inheritance of genotypes from parents to offspring identifi ed using DNA testing. A simple and affordable method for analyzing micro-satellite nuclear DNA loci was used as a defi nition of genetic relationships. A genetic bank of cattle samples was created and systematized for 4716 animals for research purposes. The extent of incorrect entries in the pedigree of descendants is given according to the primary counting data and the results of genotyping in the panel of 15 micro-satellite loci for animal enterprises of the Tyumen and Kurgan regions, as well as the Khanty-Mansi Autonomous Okrug-Yugra was observed. At least 88% of the matches were found for both parents of 531 “triples“ (mother-offspringfather) animals of the milk cattle. Up to 3% of incorrect entries in the pedigree of offspring for the black-motley breed and up to 11% for Holstein were identifi ed for their parents. The genetic identifi cation errors for meat breeds for Aberdeen Angus was achieved in 10% and Hereford to 25%. It is established that micro-satellites are a tool for determining the accuracy of origin, according to the worldwide quality standard. They are suitable for verifying primary zoo-technical data and genetic identifi cation of dairy and beef cattle.

scholarly journals The Relationship of Conceptual Tempo to Reading Readiness Test Performance

1976 ◽  
Vol 8 (1) ◽  
pp. 83-87 ◽  
Author(s):  
Jon E. Shapiro
Keyword(s):  
Reading Instruction ◽  
Test Performance ◽  
First Grade ◽  
Test Results ◽  
Mental Age ◽  
Beginning Reading Instruction ◽  
Relationship Of ◽  
The Relationship ◽  
Matching Familiar Figures Test ◽  
Conceptual Tempo

This study was designed to investigate the relationship of reflection-impulsivity to performance on a standardized readiness measure. 90 first grade boys were administered the Matching Familiar Figures test to determine their conceptual tempo. 37 boys were classified as impulsive while 30 were determined to have a reflective conceptual tempo. After determining that no pre-existing differences on chronological age, mental age, or intelligence quotients were evident between the two groups, the 67 subjects were administered the Gates-MacGinitie Readiness Skills Test. Results of the statistical analyses revealed that the reflective subjects were significantly superior on overall test perfromance and on six of eight subtests. Implications for beginning reading instruction and for further research were drawn.

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