UPRAVLJANJE RASPLOĐIVANJEM I KONTROLA RASPLODNE SPOSOBNOSTI PASTUHA TOPLOKRVNIH PASMINA

master's thesis

• Title (english): BREEDING MANAGEMENT AND BREEDING SOUNDNESS EXAMINATION OF WARMBLOOD STALLIONS
• Author: Margareta Jagušt
• Mentor: Martina Lojkić (mentor)
• Mentor: Nikica Prvanović Babić (mentor)
• Committee member: Ivan Folnožić (predsjednik povjerenstva)
• Committee member: Nikica Prvanović Babić (član povjerenstva)
• Committee member: Martina Lojkić (član povjerenstva)
• Committee member: Branimira Špoljarić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Veterinary Medicine; Zagreb
• Defense date and country: 2022-02, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Veterinary Medicine; Veterinary Clinical Sciences

Abstract

Pastusi kao glavni prijenosnici kvalitetnog genetskog materijala imaju ključnu ulogu u rasplođivanju, jer se koriste na velikom broju kobila i time imaju značajan utjecaj na iduće generacije. Rasplodni pastusi se odabiru na temelju podrijetla, eksterijera i sportskih rezultata. Svaki pastuh prije ulaska u rasplod i prije svake rasplodne sezone mora proći procjenu rasplodne sposobnosti te biti redovito testiran na zarazne bolesti. Procjena rasplodne sposobnosti uključuje klinički pregled, pregled vanjskih spolnih organa, procjenu libida, ponašanja tijekom parenja odnosno polučivanja ejakulata te ocjenu ejakulata i spermija. Plan mora biti prilagođen svakom pastuhu individualno s obzirom na to da se toplokrvni pastusi osim u rasplodu koriste i u sportu, a vrhunac sportske sezone se poklapa sa sezonom parenja. Toplokrvni pastusi se u rasplodu, a i u sportu obično koriste od svoje 3. godine, a njihova karijera najčešće traje 15 ili više godina. Istovremenu primjenu pastuha u rasplodu i sportu nam olakšavaju razne tehnike asistirane reprodukcije poput umjetnog osjemenjivanja svježim, ohlađenim ili smrznutim sjemenom. Svako polučivanje ejakulata te rukovanje s ejakulatom mora biti u skladu s mjerama biosigurnosti kako bi spriječili kontaminaciju ejakulata i prijenos zaraznih bolesti. Kako bi odredili prikladan uzgojni plan za pastuha određujemo njegovu sposobnost proizvodnje odgovarajućeg broja morfološki normalnih i vitalnih spermija koji imaju sposobnost progresivne pokretljivosti 24-72 sata nakon razrjeđenja u odgovarajućim ekstenderima. Ejakulat mora biti slobodan od virusnog arteritisa konja, bakterije Taylorella equigenitalis i ostalih patogenih bakterija poput Pseudomonas, Klebsiella i Streptococcus zooepidemicus. Pastuh mora biti pod strogim zdravstvenim nadzorom jer svaki odmak od homeostaze može ugroziti plodnost. Isto tako, svi postupci vezani uz korištenje pastuha u rasplodu moraju biti u skladu s važećim zakonskim regulativama.

Abstract (english)

As the main carriers of quality genetic material, stallions are the focal point of equine breeding program, because they are used on a large number of mares and thus have a significant impact on future generations. Breeding stallions are selected based on their pedigree, performance, and conformation. Before entering the breeding program and before each breeding season, each stallion must undergo a breeding soundness examination and be regularly tested for infectious diseases. Breeding soundness examination includes clinical examination, examination of the external genitalia, libido, sexual behavior, and semen evaluation. The plan must be adapted to each stallion individually, since most warmblood stallions are not used solely in breeding but also in sports, and the peak of the sports season coincides with the mating season. Warmblood stallions are often used in breeding and as well in sports usually from the age of three, and their career mostly lasts 15 or more years. Simultaneous use of stallions in breeding and sports is facilitated by various assisted reproduction techniques such as artificial insemination with fresh, cooled, or frozen semen. Each semen collection and handling of semen must be in accordance with biosecurity measures to prevent semen contamination and transmission of infectious diseases. In order to determine a suitable breeding plan for stallion, we should check stallion's ability to produce adequate numbers of morphologically normal sperm that have the ability to remain progressively motile for 24-72 hours when diluted in an acceptable semen extender. Semen should be free of equine arteritis virus, bacteria Taylorella equigenitalis, and other pathogenic bacteria such as Pseudomonas, Klebsiella, and Streptococcus zooepidemicus. The stallion must be constantly under strict health supervision because any deviations from homeostasis can endanger fertility. Also, everything must be in accordance with applicable legislation.

• Keywords: pastuh toplokrvne pasmine; ejakulat; rasplođivanje; biosigurnost
• Keywords (english): warmblood stallion; semen; breeding; biosecurity
• Language: croatian
• URN:NBN: urn:nbn:hr:178:635522
• Study programme: Title: Veterinary Medicine; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor/doktorica veterinarske medicine (doktor/doktorica veterinarske medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-03-16 09:07:35