Selection of layer hens for intensity of embryonic development allows segregation of layers with the highest productivity indicators, best reproductive qualities and best population safety.
Keywords: poultry, poultry production, egg, productivity, selection, layer, embryo, egg weight, egg laying capacity, chick hatching, attribute correlation, reproductive qualities, population safety, fertilization rate, incubation.
Improvement of egg nutritional value by selection methods due to increase in the egg yolk size by 30–31% of egg weight (yolk diameter up to 0.055–0.057 cm/g of egg) of highly productive industrial chicken crosses is practicable and feasible.
Keywords: poultry, poultry production, nutrient value, selection, egg yolk, protein, egg shell, egg, productivity, chicken hen, layer, embryo, glucose, triglycerides, calorie value, correlation, feed conversion, selection, ultrasonic scanning.
The new hybrid combination of chickens of combined type of productivity, unlike the analogues — parental forms, is characterised by high viability of young animals (survival rate 100%), intensity of cockerels growth during fattening for meat, more compact constitution, and better meat qualities.
Keywords: poultry production, cockerels, maternal and paternal line, livestock breeding, hybrid combination, viability, growth intensity, compact constitution, meat qualities, combined type of productivity, Poltavskaya Glinistaya chicken breed, White Plymouth Rock, fattening for meat, chicks, live and slaughter weight, carcass, mass index.
A new breed of geese with grey colour of feathering was developed, with high productive and reproductive characteristics.
Keywords: poultry production, family selection, geese production, feathering, feeding, diet, male goose, female goose, young male goose, young female goose, young geese survival, egg hatchability, Large Grey breed, Land breed, productivity, live weight, pedigree breeding, thoroughbred geese, egg laying capacity, nest, fatherly and motherly lines, incubation eggs, nest mating, parental pair, selection, pair selection, directional growing, Ural Grey geese.
The official distributor and breeder of Cobb meat crosses in Russia — a first order nucleus Broiler Budushchego LLC —was renamed to Cobb Russia LLC in September 2017.
Keywords: poultry production, Cobb crosses, first order nucleus, Cobb Russia LLC, breeding chickens, incubatory eggs, grandparent herd.
Industrial inspection confirmed the conclusions of experts about practicability of geese selection for improvement of egg fertilization rate through selection of polygamous stud males and for improvement of productive qualities of the poultry. Upon crossing the selected lines, expenses for production of one-day goslings were reduced by 5.8%.
Keywords: geese farming, Linda breed, poultry breeding, selection nests, polygamous stud males, egg fertilization rate, live weight parameters, gosling yield.
The article discusses new recessive genetic defects of Holstein cattle associated with embryonic and early postembryonic mortality, which were named «fertility haplotypes».
Keywords: DNA technologies, selection and breeding work, embryonic and early postembryonic mortality, fertility haplotypes, stud bulls, cow, calf, dairy cattle sector, metabolic stress, transit period, Holstein cattle, reproductive ability of cows, mutant allel.
For successful animal breeding, improvement of the existing breeds and early forecasting of the future productivity of dairy cattle, interrelation between milk yields and blood biochemical indicators are studied as they directly influence the process of lactogenesis.
Keywords: dairy cattle production, selection, enzymes, blood serum, correlation, breed, cow, productivity, biochemical blood indicators, lactogenesis, aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase, lactic dehydrogenase, sorbitol dehydrogenase, cholinesterase, amylase, γ-glutamine transferase, genes, DNA, proteins, milk yield, metabolites, daughter cows, father bulls, improvers, lactation, feeding.
Breeding value of the Large White pig was assessed for replacement gilts using indicators of own productivity and for sows for reproductive qualities as well for the degree of correlation between the signs with low heritability estimate.
Keywords: pig production, replacement gilts, sows, Large White breed, breeding value, animal assessment, BLUP method, macrocarpous, reproductive qualities, prolificacy, nest uniformity, live weight, daily average gain, L.Lash indexes as modified by N. Berezovsky, correlation relationship.
Genetic potential of pigs of contemporary breeds is realized by competent feeding of animals and creation of optimum housing conditions.
Keywords: pig production, pigs, gene fund, genetic potential, paternal and maternal forms, selection, nucleus, genotype, additive effect of the action of genes and heterosis, mongrel offspring, selection, productivity, blood relationship of offspring, hybrid, half-blood, heredity, fruitfulness, Duroc, Large White pig, Landrace, Pietrain, correlation relation, population, prolificacy, piglet, breed line hybridization, sow, pig weaning, superdomination, inter-breed crossing, nest weight, back crossing and absorption crossing.
It is reasonable to fertilize Large White thoroughbred sows and mongrel individuals LB×L with sperm of hybrid male pigs of L×D and D×P genotypes to receive mongrel young animals adapted for growing in the conditions of industrial technologies, in carcasses of which the fat layer is thinner, the rib eye area is larger, the gammon is heavier, and the meat content is greater.
Keywords: pig production, pigs, sow, male pig, piglet, yelt, intra-breed improvement, selection, inherited traits, prolificacy, productivity, milkiness, survival, breed, crossing, Large White breed, Duroc, Landrace, Pietrain, thoroughbred individual, two- three- and four-breed, mongrel offspring, pork, breed, fattening, farrowing, live weight, artificial insemination, reproductive qualities, estimate index of reproductive traits, composite indicator of reproductive qualities, weaning, effect of heterosis, mating, daily average weight gain, pork fat, gammon, carcass, rib eye, genotype.
It was experimentally proved that thoroughbred Tuklin pigs are better adapting for changing feeding conditions than hybrid animals.
Keywords: pig production, pigs, yelts, thoroughbred, hybrid, Tuklin breed, Yorkshire, Landrace, Duroc, selection, feeding, feed, diet, digestibility of nutrients, coefficient, total nutrient value, solids, organic substance, protein, fibre, fat, nitrogen-free extractive substances, ash, average daily gain, live weight.
Based on the data on pig growth rates in the first months of life, more accurate forecast of the trend of their development at older age is possible. Pig growth up to eight months is mostly governed by large size and weight of animals at an age of four month.
Keywords: animal breeding, pig production, piglet, productivity, phenotypic assessment, correlation relationship, growth energy, growth intensity, breeding value, live weight, genotype, large size of litter, weaning, growth uniformity and intensity index, replacement young animals.
Interview with Natalya Kazmina, Director of Selection and Hybrid Center LLC (Voronezh Region).
Keywords: Selection and Hybrid Center LLC, breeding pig stock, thoroughbred animals, Large White, Landrace, Duroc, hybrid population, Russian Selection and Hybrid Centers, sow, pig factory farm; phenotypical, index and genetic assessment; prolificacy, pig growth rate, depth of loin eye, valuation, farrow, marker selection, boar testing for average daily gain and feed conversion.
Semex offers milk producers the Immunity+ technology that guarantees herd health improvement and increases profit on investment.
Keywords: dairy cattle production, bull, cow, calf, Immunity+ technology, Genomax bulls (high genomic bulls), Immunity+ bulls, genetics, genomic selection, genomic assessment, herd, population, pneumonia, diarrhea, metritis, placenta detention, mastitis, ketosis, insemination, immune response, milk, culling, vaccine, antibodies, colostrum, productivity, heritability, Holstein breed, bulls’ semen, bulls’ daughters, top bull, milk yield, somatic cells, GTPI index, bull rating, vaccination, heifer, company Semex.