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Biomedical subjects

Iu D Klinskiĭ

Publications and source records attributed to Iu D Klinskiĭ.

14 recordsLinked to original sources
PubMed1977

[Conclusions on the use of Suisychron in the USSR].

Suisynchron was applied to 2,258 gilts, including 850 from breeding farms. Forty-four pigs were checked to elucidate the influence of sexual maturity on the success of oestrus synchronisation. Suisynchron-Prämix was fed to the animals over 20 days, the daily dose for each pig having been 5 g. Twenty-four hours were allowed to elapse from the last administration before 1,500 I.U. PMSG were injected. Synchronised oestrus occurred in 81.2 per cent of all pigs between four and six days from serum injection. Fertilisation in response to first insemination was recorded from 72.9 percent of the pigs, their fertility rate being 9.7 piglets from each farrowing sow. The results of oestrus synchronisation obtained from fattening pigs were somewhat inferior to those recorded from pigs of breeding units. Suisynchron and serum of pregnant mares can synchronise oestrus in 91 per cent of all mateable sows with no previous cycle. The fertility rates recorded from such pigs did not exceed 59 per cent or were between 28.9 and 31.9 per cent lower than those recordable from pigs with a cycle history prior to the use of Suisynchron.

Animals↗
PubMed1977

[Use of norgestagens for estrus synchronization if farm animals].

The action of norsteroid type preparations and their capability of synchronising oestrus in heifer and sheep were studied at laboratory and clinical levels. The effectiveness of norethysterone acetate in heifer was tested by subcutaneous injections of 5 mg and 10 mg and did not exceed the order of 50 per cent. Combination of norsteroids with serum of pregnant mares increased slightly the number of animals with synchronised oestrus and improved the rate of fertilisation. Studies conducted into sheep revealed that no complete inhibition of the sexual function was ensured by injection of norgestrol acetate with prolongator in intervals of four days. Implantation of norgestrol acetate was not effective either. Further studies are required, before the above preparations can be applied to farm animals on a large scale.

Animals↗
PubMed1977

[Teratogenicity of zinc-metallibur].

Suisynchron-Prämix, 5 g/100 mg active principle, was administered daily to pregnant brood sows over 20 days, beginning from the 15th, 25th, 35th, 45th, and 55th days of pregnancy. The effects of Suisynchron on pregnancy were assessed by slaughter results immediately after administration as well as by farrowing results and slaughter of the newborn piglets. Suisynchron administration between the 15th and 55th day of pregnancy killed the embryos, while teratogenic effects were primarily recorded from administration in more advanced phases, say, between the 45th and 75th days of pregnancy. Teratogenicity was attributable to damage to metabolism which, in turn, had been caused by deviations in the activity of endocrine glands.

Animals↗
PubMed1977

[Significance of the correlation between follicle-stimulating and luteinizing components in the pregnant mare serum--relevance to results of biotechnical regulation of reproduction].

Full assessment of the correlation between follicle-stimulating and luteinising components in PMS is of greatest importance to progress in bio-engineering action to regulate reproduction processes. Biological tests ought to be developed that are of high specificity and convenient applicability to practice conditions. Studies into the components of "raw" PMS will enable high-economy and specific use of such serum in animal husbandry.

Animal Husbandry↗
PubMed1977

[Planned control of reproduction processes in industrialized sheep breeding].

Discussed in this paper are possibilities at present available for bio-engineering action to control reproduction processes in ewes under the aspect of their applicability to industrialised lamb production. Reference, in this context, is make to the requirements of industrialised sheed breeding in establishing groups of young animals on the basis of cyclograms. Described is the most appropriate method at present to use feed pellets with megestrol acetate for oestrus synchronisation. The conclusion is that for the time being there is no method with sufficient economy by which to stimulate oestrus in sheep during the season and the non-oestral lactation period by which to bring forward the onset of sexual maturity.

Animals↗
PubMed1977

[Comparative studies on the effects of hormone preparations on meat building in farm animals].

Many hormone preparations of non-stilbene nature are known for their weight-gain stimulating properties in the context of cattle, smaller horn animals, and swine, with gain rates between five and 20 per cent being achievable. Savings on feedstuff may reach orders between five and 15 per cent, and the yield of high-quality meat products is improved as well. Oestrogenic activity may be substantively reduced by discontinuation of diethylstilboestrol tablts five days before slaughter. It is suggested to remove tablet residues when other stimulators are to be implanted. The following preparations and doses are recommended for approbation in the context of breeding and fattening.

Animal Husbandry↗
PubMed1977

[Use of megestrol acetate in estrus synchronization of heifers under industrialized conditions of cattle breeding].

Daily doses between 30 and 35 mg megestrol acetate were administered to 4,000 heifers over roughly two weeks and produced highly synchronising effects which, however, were lower in response to lower doses. Rectal checks were applied to the ovaries of heifers which had received megestrol acetate and showed that here the number of mature follicles was higher than recorded from animals that had been given chlormadinone acetate. Megestrol acetate, applied in granular form blended into mixed fodder, proved to be the most favourable variant of application. Synchronisation of oestrus on the basis of the above approach was found to yield per animal savings between 4.30 and 22.70 roubles under practice conditions.

Animals↗
PubMed1977

[Use of megesterol acetate for synchronization of estrus in cows].

Megestrol acetate has proved to be of positive impact upon synchronisation of oestrus in beef cows. Fodder-borne administration of 35-45 mg megestrol acetate caused oestrus in nursing cows, accompanied by disorders in ovarian function. The physiological condition of the animal at the date of treatment was found to be of major relevance to success. Evidence was produced to the strong action of serum obtained from pregnant mares in which the ratio of total gonadotrophic activity to luteinising activity was between 3:1 and 2.5:1. The use of megestrol acetate is recommended as a method by which to activate sexual function in the context of beef cattle breeding.

Animals↗