Purpose. To predict the level of meat and dairy productivity of farm animals based on the use of multidimensional information and statistical models
Specifications. Washing solution – 5% or 10% hydrochloric acid depending on the nature and thickness of deposits, eco-inhibitor at the rate of 1-3 kg/ton of technical acid (30-35%). Temperature range 20 – 40 oC, time range – depending on the amount of deposits. Circulation in a closed loop at a speed of 0.1 m/s.
Application area. Agriculture
Advantages. This technology, in comparison with existing ones, allows for early prediction of estimates of the breeding value of animals based on the main traits of meat and dairy productivity in the early stages of postnatal ontogenesis, based on estimates of multilocus heterozygosity for QTL gene loci and MS-DNA. The technology makes it possible to estimate the probability of having a male/female calf based on the body weight of heifers at the age of 9, 12, 15 and 18 months, height at the withers, rear width and oblique length of the body at the age of 1st calving. An approach is presented to predicting the potential level of milk productivity of first-born dairy cows using Principal Component Analysis (PCA) of a variation-covariance matrix containing data on the body weight of heifers at birth, at 3, 6, 9, 12, 15 and 18 months of age. The proposed approaches can be used for early assessment of signs of reproduction, growth and development of cows and pigs and have no analogues at the national level.
Technical and economic effect. The presented approach to modeling the level of meat and dairy productivity of farm animals based on the use of multidimensional information and statistical models can be used in the conditions of breeding and commercial dairy and meat farms under the conditions of adequate maintenance of zootechnical breeding documentation. This approach allows for early prediction of estimates of the breeding value of animals based on the main characteristics of meat and dairy productivity. Due to the fact that the model uses data on animals at the early stages of postnatal ontogenesis, the approach makes it possible to reduce the time of keeping animals with low predictive estimates of breeding value and reduce the costs of their maintenance.
Description. The technology involves the use of genetic polymorphism at loci of QTL genes and DNA microsatellites (MS-DNA), recommended by ISAG, to search for connections between the allelic spectrum and estimates of multilocus heterozygosity, as well as MS Excel, PAST, STATISTICA, MiniTab, GenAIEx software for constructing and verification of the mathematical model, as well as statistical processing of verification results. For large white breed sows, the correlation between heterozygosity and reproductive traits was negative for most of the MS-DNA loci used in the analysis, which is associated with the crossing of breeding animals of different origins (English and Hungarian selection) and, accordingly, the manifestation of outbred. For heifers of the southern beef breed, the probable influence of the BM2113 locus on live weight at the age of 15 months was established. and BM1818 locus on live weight at the age of 8 months. and the presence of an association between body weight and d2 measure scores for four MS-DNA loci (BM2113, SPS115, ETH3 and BM1824).