Issue №: 2(101)
У збірнику висвітлено питання підвищення продуктивності виробництва продукції сільського і рибного господарства, технології виробництва і переробки продукції тваринництва, харчових технологій та інженерії, водних біоресурсів і аквакультури
MODELING OF LIVE WEIGHT OF HEIFERS OF HOLSTEIN BREED BY USING B.GOMPERTZ’ GENETIC AND MATHEMATICAL MODEL
Karateyeva O.I., Сandidate of Аgricultural Sciences, Associate Professor
Mykolayiv National Agrarian University
Polishchuk T.V., Сandidate of Аgricultural Sciences, Associate Professor
Vinnytsia National Agrarian University
The paper highlights the results of the study of the live weight of heifers of Holstein breed of different origins and its genetic and mathematical modeling by using B.Gompertz’ model. This model adequately describes the dynamics of heifers’ weight gain and the most correctly characterizes their live weight in the period of early ontogenesis – 3 months, at an older age – 9 months and after the age of 18 months. At the same time, the biggest differences between the actual live weight values and the theoretical ones were noted at birth and at the age of six and 12 months. The model can be used to describe the characteristics of heifers’ growth and development, and as a unique marker in predicting the milk productivity.
The study was conducted on the basis of Ltd. “Dobrobut” of the Mykolayiv district, Mykolayiv region, on the heifers of Holstein breed of different origins (n=80 heads). The groups of animals were randomized and evaluated according to the live weight at birth and at the age of 3, 6, 9, 12, 15 , 18 and 24 months.
The research has established a clear preference of the live weight in the heifers-daughters of the bull-bearer Mars (41, 172, 286, 385 kg), which may indicate its better hereditary characteristics regarding the effect on the formation of this feature in its descendants. The B.Gompertz’ model adequately describes the dynamics of heifers’ weight gain, which can be served as a unique marker in predicting the milk productivity of the experimental groups of animals. This model characterizes them the most correctly in the period of early postnatal ontogenesis – 3 months, at an older age: 9 months and after the age of 18 months. Their live weight is approaching its maximum possible index – α=142. The approximation of the actual curves by the theoretical ones has established a certain adequacy of the model, which allows using it to describe the characteristics of heifers’ growth and development.
Our research has found that the live weight at birth does not have a significant difference, but the cows of the bull-bearer Mars have its higher value of 41 ± 0.2 kg. It is equal to the live weight of the control group cows, which in turn exceed the third degree of probability of this economically useful feature in the daughters of the bull-bearer Eric by 2.5% (40 ± 0.2 kg).
The tendency of the predominance of cows-daughters of the bull Mars remains in the future. Thus, its level at the age of six months is 172±0.7 kg, with the difference of 1 kg from the control group.
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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).
