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The effectiveness of the feed additives enzyme, probiotic and adsorbents in feeding breeding pigs

Author: Caisîn Larisa
Degree:doctor habilitat of agriculture
Speciality: 06.02.02 - Animal Nutrition and Fodders Technology
Scientific consultant: Vladimir Radionov
doctor habilitat, professor, Agrarian State University of Moldova
Institution: Agrarian State University of Moldova


The thesis was presented on the 30 December, 2015
Approved by NCAA on the 25 February, 2016


Adobe PDF document2.03 Mb / in romanian


CZU 636.

Adobe PDF document 8.12 Mb / in russian
243 pages


pig breeding, fodder, feed additives, enzymes, probiotics, adsorbents, nutrient digestibility, blood composition, the quality of meat products.


Structure of the thesis: the dissertation of the Doctor Habilitat includes an introduction, five chapters, general conclusions and recommendations. The bibliography includes 544 sources. The work is set out on 213 pages, and is illustrated by 128 tables in the text and by 155 tables in the annexes; it also contains 43 figures and 34 photos. The content of the thesis is fully reflected in 74 scientific publications.

The purpose of the study: to scientifically substantiate the problems of the effective systemic utilization of the optimal levels of feed additives of new generation, in order to improve the productivity of breeding pigs of modern meat breeds by means of qualitative feeding.

Objectives: to develop recipes of complete fodders based on the use of local vegetable raw materials and fodder additives of new generation; to identify the impact of different levels of feed additives of new generation on the exchange and use of the nutrients in the rations by breeding pigs; to determine the effect of probiotics on the development of the microbiocenosis of the pigs’ gastrointestinal tract; to determine the content of mycotoxins in the fodders of local production intended for the feeding of pigs; to determine the pigs’ productivity and breeding qualities under the influence of different feed additives of new generation; to develop a system of full feeding of breeding pigs of modern meat breeds using feed additives of new generation; the determine the economic efficiency of the usage of the developed mixed fodders recipes in which the new generation of feed additives were used.

The scientific novelty and originality: for the first time there has been explained the scientific basis on the use of feed additives of new generation in the feeding of pigs of modern meat breeds by improving the productive action of fodders of Moldavian production.

The newly obtained results, relevant to science and practice that have determinned the creation of a new scientific direction or solution of problems that bear a scientific and practical nature or of a major importance problems, is to provide the elements of feeding pigs for breeding based on effective integrated use of feed additives of the new generation, providing increased productivity due to the intensity of growth and development of animals.

Theoretical value: the usage of feed additives of new generation on the metabolism and productivity indicators of the pigs of modern meat breeds has been studied and comprehensively justified. Fodder recipes for breeding pigs with a high content of barley have been developed and tested under production conditions, and the best levels and combinations of enzyme, probiotic and absorbent feed additives in growing breeding pigs have been determined.

The practical value: the optimal levels of feed additives of new generation in the composition of the mixed fodders for breeding pigs of different age and gender have been determined, which improve their productivity and reduce the feeding cost per unit of output, while increasing profitability. The research allows to establish rational methods of the usage of food resources produced in the Republic of Moldova in fodders for breeding piglets.

Application of the scientific results: the research materials are used in the educational process, at the faculty of Animal Science and Biotechnology, and the faculty of Veterinary Medicine of the SAUM. It is also used to develop guidelines on farm animals feeding and technology of fodder preparation. It was used to write the monographs "Mycotoxicoses in pigs», «Probiotics in pig nutrition», and the book "The research methodology and technology in pigs feeding." Based on the results of the study three patents have been obtained and practical recommendations have been developed.