Study of the influence of low concentrations of a-zearalanol in feed on reproductive quality of hens
The effect of a-zearalanol at low concentrations on the reproductive properties of laying hens. Preservation of poultry, weight and hatchability of eggs, distribution of waste by periods of incubation. Decrease in the death of embryos in the later stages.
Подобные документы
Study of economic effect of reproductive and respiratory syndrome virus and porcine circovirus type 2. Analysis of immunoprophylaxis of porcine circovirus type 2. Analysis of impact of reproductive and respiratory syndrome virus on farm productivity.
статья, добавлен 26.01.2017Experiment was conducted by adding the antibiotic-effective plants of sorghum, licorice root, amaranth grain and hydroponically germinated corn, barley, amaranth and sorghum grain to the feed share of young birds to study the effect on meat productivity.
статья, добавлен 11.10.2024The quality of feed must meet the requirements of current regulations. Many countries adopt laws that allow for the establishment of uniform standards and testing of feed. The quality and safety of feed also affect the quality of agricultural products.
статья, добавлен 03.09.2024Biochemical characteristics of chicken eggs after feeding with powder. Microflora of litter after feed additive application. Amino acid analysis of litter and powder samples. Feed additive was derived from poultry manure by microbiological synthesis.
статья, добавлен 20.03.2021It was found that under the influence of the enzyme "Rovabio" in birds increases the gross collection of eggs relative to control analogues. Recommended to use more crosses of domestic selection, as more adapted to local conditions of keping and feeding.
статья, добавлен 30.08.2022The study of the effect of feeding different amounts of triticale grain in the diet on digestibility of nutrients, body weight, average daily gain, carcass weight. It was established that the intake of nitrogen exceeded its excretion with faeces.
статья, добавлен 11.12.2023Study of the influence of the structure of the nest and the age of the queen bee on the flight-gathering activity in the preparation of protein feed. Analysis of the connection between the receipt of pollination in a bee colony and different brood ages.
статья, добавлен 14.07.2022The influence of blood and lineal affiliation of the Holstein breed on milk productivity, reproductive qualities and exterior of cows of the black and spotted breed. The effect of increasing the proportion of blood in Holsteins on milk productivity.
статья, добавлен 24.05.2023Prevention of poisoning of farm animals by heavy metals. Monitoring of the contamination of the fodder base of poultry kept at home. Application of measures to control the presence of toxic metals in the feed and increase the safety of domestic products.
статья, добавлен 19.03.2024Diagnosis of the estrous cycle in female dogs, the concept and essence of vaginal cytology. Characteristics of changes in epithelial cells of the vaginal mucosa. Division of mating time and diagnosis of pathological conditions in the reproductive system.
статья, добавлен 17.03.2022Analysis of differences in pre-slaughter body weight, carcass weight of rabbits that consumed different doses of vitamin and mineral supplements. Study of massometric indicators of carcasses, internal organs of rabbits of different ages after slaughter.
статья, добавлен 30.08.2022Study of the North-Western region of Ukraine as to the distribution and flight periods of blood-sucking dipteran insects, zoophilic flies, and botflies to protect the cattle from their attacks. Analysis of periods of increased activity of the midges.
статья, добавлен 29.06.2022- 13. Nutritional and biologiacal value of quail meat with feed-staff usage with different protein levels
Quail meat quality analyses under the influence of feed-staff feeding with different protein levels. Relationship between the levels of quails protein supply and slaughter indexes and chemical composition of the pectoral muscles is established.
статья, добавлен 29.07.2016 - 14. Probiotic feed addition influence on slaughter qualities of broiler chickens grown in a cage battery
"Protecto-Active" feed addition with probiotic action positive influence on slaughter qualities of the broiler chickens grown in a cage battery is ascertained. The use of the probiotic feed addition of in the technological process of broiler chickens.
статья, добавлен 07.12.2016 - 15. Influence of cow body weight and condition score before delivery on calving course of hereford cows
Determination of the influence of body weight and assessment of the state of Hereford cows before calving. Analysis of the ratio of different courses of calving Hereford cows, depending on their body weight and condition immediately before calving.
статья, добавлен 28.10.2018 Analyze the influence of replacement of soy with protein sunflower concentrate in the diets for broiler chickens and to evaluate the effect of this ingredient on the growth and development of poultry. Review of indicators of the meat productivity index.
статья, добавлен 05.09.2022Showed that using bishofite solutions in order to stimulate growth of spring barley plants. The influence of growth factors on the accumulation of solids in spring barley plants at different stages of organogenesis was established and characterized.
статья, добавлен 01.09.2022The place of the poultry sector in the agro-industrial complex, its role in supporting the country's economy, the state and prospects offunctioning, development of the poultry industry. The ways to improve the economic efficiency of poultry enterprises.
статья, добавлен 02.12.2017Ways and principles of increasing the immunity and productivity of animals when using phytopreparations. Evaluation of the effect of the study drugs on the calves at the age of 2.5 months. Properties and importance of these drugs in agriculture.
статья, добавлен 23.09.2016Development of modern effective biocides for poultry farming, non-toxic for disinfection in the presence of birds with a prolonged effect. Monitoring of test cultures of micromycetes is the main indicator for determining the effectiveness of the drug.
статья, добавлен 25.06.2024Introduction to basic options for measuring bPAGc concentration using three RIA systems in the postpartum period in non-pregnant cows. General characteristics of the most important sources of glycoprotein expression, consideration of the features.
статья, добавлен 23.03.2021- 22. Reproductive ability of queen bees under the influence of heavy metals and fatty acids of bee pollen
Monitoring of the ecological state of the environment of the Carpathians. Assessment of the condition of apiary farms in the mountain zone of the Lviv Region. Determination of the content of heavy metals in the topsoil, bee pollen and honey bee tissues.
статья, добавлен 12.12.2023 The study of the effectiveness of nitrogen fertilizers for winter wheat and their impact on the yield. Approximation of the timing of nitrogen fertilizer application to the preparation stages. Winter wheat yield depending on fertilization system.
статья, добавлен 14.07.2022- 24. Breeding poultry
The domestication of poultry. Principles of maintenance, care and breeding chickens. Selecting breeds for breeding. Basic principles of culling birds at breeding. Breed Character. Detailed official colour standards. Guidelines for keeping cockerels.
контрольная работа, добавлен 25.04.2015 Presents information on feed crops of arid mountain lands of Nakhchivan. It is established that the most widespread group of feed grasses of the studied area includes Artemisia L., Salsola L., Kochia Roth, Atriplex L., Symphytum L., Astragalus L.
статья, добавлен 03.09.2024