COMPARATIVE ASSESSMENT OF GROWTH, DEVELOPMENT AND MEAT PRODUCTIVITY OF BULL CALVES OF BLACK-SPECKLED BREED AND ABERDEEN-ANGUS CROSSBREEDS
GOLUBENKO Tatyana, Candidate of Agricultural Sciences, Associate Professor of the Department of Technology of Production of Livestock Products, Vinnytsia National Agrarian University; (21008, 3, Soniachna Str., Vinnytsia; e-mail: Aponas-504@rambler.ru).
The reason for studying the meat productivity of Aberdeen-Angus crossbreeds was the fact that this breed has become to be very widely used in Belarus to create herds of beef cattle by crossing the producers with non-technological low-productive livestock of black-speckled dairy breed.
Studying the effect of breed belonging on the productive qualities of bull calves of black-speckled breed and Aberdeen-Angus crossbreeds, which were grown with the use of dairy cattle breeding technology, it was found that the live weight of crossbreeds was by 6 kg or 8.3% (P<0.05) higher at the age of 2 months and by 7 kg or 7.3% (P<0.05) higher at the age of 3 months. Though, by the end of the experiment the live weight had been by 4 kg or 2.4% slightly higher in favor of purebred bull calves. The average daily gains of live weight were almost identical – 766 and 755 g during the whole period of the experiment from birth to the age of 6-6.5 months. The growth rate heterosis wasn’t found out in the crossbred bull calves. As a result of the control slaughter, high rates characterizing meat productivity of the experimental bull calves were determined. The pre-slaughter live weight of bull calves of black-speckled breed was 168.2 kg, while it was 165.8 kg in Aberdeen-Angus x black-speckled crossbreeds and reflected the average results of the groups. In addition to the absolute indicators of carcass weight, fat and other products of slaughter, the level of meat productivity is also characterized by a slaughter yield, which is determined by the ratio of slaughter weight of carcass and raw fat to the pre-slaughter weight of the animal, expressed as a percentage.
The slaughter yield of crossbred beef bull calves in our experiment was by 7.8% higher and amounted to 52.5% (P<0.001) vs 44.7%. Also Aberdeen-Angus x black-speckled crossbreeds exceeded by 7.7% (P<0.001) in carcass output.
It should be noted that Aberdeen-Angus x black-speckled crossbreeds had a higher meat yield with a relatively low fat content in the carcass compared to the control group of bull calves of black-speckled breed.
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About journal
Аnimal feeding and feed technology; current problems of animal breeding, breeding and hygiene; food safety and food processing technology; aquatic bioresources and aquaculture
Certificate of state registration of the print media: КВ № 21523-11423Р 18.08.2015
Founder of the collection: Vinnytsia National Agrarian University, Georgia Academy of Agricultural Sciences
Editor-in-Chief: Viktor Mazur, Candidate of Agricultural Sciences Associate Professor, VNAU (Vinnytsia)
Deputy editors-in-chief: Aleksidze G.M., D.Sc.(Ph.D.), academician of the Academy of agricultural sciences of Georgia; Yaremchuk O.S., D.Sc.(Ph.D.) Professor, University of Vinnitsa (Vinnytsia)
Secretary in charge: L. Kazmiruk
Editorial Board full list
Editorial board
Mazur Viktor, Candidate of Science, Associate Professor of VNAU (Editor-in-Chief);
Guram Aleksidze, Ph.D., Academician of the Academy of Agricultural Sciences Georgia (Deputy Editor-in-Chief);
Yaremchuk Oleksandr, Ph.D., Professor, VNAU (Deputy Editor-in-Chief);
Members of the Editorial Board:
Ibatullin Ildus, Ph.D., Professor, Academician, NULES;
Kaletnik Hryhoriy Ph.D. (Economics), Academician of NAAS of Ukraine, VNAU;
Zakharenko Mykola Oleksandrovych, Ph.D., Professor, NULES;
Vashakidze Archil, Ph.D., Academician, National Coordinator for Agricultural Electrification and Automation (Georgia);
Giorgadze Anatoly, Ph.D. (Engineering), Academy of Agricultural Sciences of Georgia;
Grib Josip, Ph.D, Professor of NUHPP;
Dzhaparidze Givi, Ph.D. (Economics), Academician, Vice-President of the Academy of Agricultural Sciences science of Georgia;
Georgiy Yeresko, Ph.D. (Engineering), Professor, Corresponding Member of NAAS of Ukraine, Institute of Food Resources;
Vlasenko Volodymyr, Ph.D.(Engineering), Professor of VTEI;
Kulyk Mykhaylo, Ph.D., Professor, Corresponding Member of NAAS of Ukraine, VNAU;
Kucheriaviy Vitaliy, Ph.D.(Engineering), Professor, VNAU;
Lysenko Alexander, Ph.D., Professor, Research Institute of Experimental Veterinary Science, Academy of Sciences of Belarus (Minsk);
Lyotka Halyna, Ph.D., Associate Professor of VNAU;
Mazurenko Mykola, Ph.D., (Engineering), Professor;
Polishchuk Galina, Ph.D., Associate Professor;
Sychevsky Mykola, Ph.D.(Economics), Professor, Corresponding Member of the National Academy of Sciences of Ukraine, Institute of Food Resources;
Skoromna Oksana, Ph.D., Associate Professor;
Chagelishvili Revaz, Ph.D., Academician, National Forestry Coordinator (Georgia);
Chudak Roman, Ph.D., (Engineering), Professor, VNAU;
Sheiko Ivan, Doctor of Science, Professor, Institute of Animal Science of the Academy of Sciences of Belarus (Zhodino);
Kazmyruk Larisa, Ph.D., Associate Professor of VNAU (secretary in charge).
Edition: Collection
Type of publication for the intended purpose: scientific
Edition status: shared
Year of foundation: 2015
Frequency: 1 to 5 times a year
Volume: 4 to 10 ppm (format A-4)
Edition language: (different languages) Ukrainian, Georgian, English, Russian
Scope and category of readers: nationwide, foreign researchers, university professors, graduate students, students and professionals of agriculture and fisheries and food production
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Agrarian Science and Food Technology Established in 1994 under the name of the Collection of Scientific Works of VSAU.
According to the Resolution of the Presidium of the Higher Attestation Commission of Ukraine of September 11, 1997, this publication has acquired the status of a professional, in which it is allowed to publish the main results of the dissertation research in the fields of "Agronomy", "Animal engineering" and "Economic Sciences".
In 2001-2014 it was published under the title "Collection of scientific works of Vinnytsia National Agrarian University".
Since 2015 it is:"Agricultural Science and Food Technologies".
Listed in the updated list of scientific professional editions of Ukraine in agricultural sciences under the name "Agrarian Science and Food Technologies" (ground: Order of the Ministry of Education and Science of Ukraine of May 16, 2016 No. 515).
