Učinkovitost sinkronizacijskog protokola u šilježica i koza Sanske pasmine izvan sezone rasplođivanja

master's thesis

• Title (english): The Effectiveness of the Synchronization Protocol in the Doelings and Does of the Saanen Breed Outside the Breeding Season
• Author: Korina Ažić
• Mentor: Ivan Folnožić (mentor)
• Mentor: Silvijo Vince (mentor)
• Committee member: Branimira Špoljarić (predsjednik povjerenstva)
• Committee member: Ivan Folnožić (član povjerenstva)
• Committee member: Silvijo Vince (član povjerenstva)
• Granter: University of Zagreb; Faculty of Veterinary Medicine; Zagreb
• Defense date and country: 2024-07-02, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Veterinary Medicine; Veterinary Clinical Sciences

Abstract

Koze sezonski poliestrične životinje, što znači da se njihov spolni ciklus javlja samo u
određeno doba godine. Sezona spolne aktivnosti i njeno trajanje ovise o pasmini i zemlji
(zemljopisna širina, klima). U našim krajevima najčešće u jesen. Cilj ovog istraživanja je
procijeniti učinkovitost metode sinkronizacije koristeći Oviser gonadotropine i Syncro-part
vaginalne spužvice van sezone rasplođivanja i razliku pri primjeni između primiparih i
multiparih koza. Istraživanja je provedeno na 29 koza, od čega je 10 bilo odraslih i 19 mladih,
odnosno šilježica. Podaci koji su uzeti iz Vef. Amb protokola su jedinstveni životni broj koza,
pasmina, dob, datum umetanja vaginalnih spužvica, datum aplikacije hormona, datum i
rezultati pregleda gravidnosti koza u istraživanju.. Za sinkronizaciju estrusa korišteni su
vaginalni gestageni, injekcijski prostaglandini i gonadotropini. Od ukupno 29 koza koje su
izabrane za provođenje ovog istraživanja, nakon sinkronizacijskog protokola 26 koza je
pokazivalo znakove estrusa. Svih 10 odraslih koza ušlo je u estrus (100%), a od šilježica njih
16 od ukupno 19 (84,2%). Od ukupnog broja koza njih 11 je ostalo gravidno te je postotak
gravidnosti izvan sezone parenja nakon sinkronizacije iznosio 37,9 %. Od onih koza koje su
ušle u estrus (N=26), postotak gravidnosti iznosio je 42,3%. Od 10 odraslih koza koje su ušle
u estrus, 6 je bilo gravidno (60%), a od 16 šilježica, 5 je bilo gravidno (31,2%). Niži postotak
koncepcije šilježica pripisuje se pasminskom svojstvu kao i neadekvatnoj metodi parenja
(haremsko držanje s jarcem). Nadalje, niži postotak šilježica u estrusu nakon sinkronizacije
posljedica je korištenja mladih životinja koje je teško pripremiti za postavljanje vaginalnih
spužvica (defloracija) te lako dolazi do ispadanje spužvica koje se nisu uspjele postaviti dublje
u rodnicu.

Abstract (english)

Goats are seasonal polyoestrous animals, which means that their sexual cycle occurs
only at certain times of the year. The season of sexual activity and its duration depend on the
breed and the country (latitude, climate). In our region, most often in autumn. The aim of this
research is to evaluate the effectiveness of the synchronization method using Oviser
gonadotropin and Syncro-part vaginal sponges outside the breeding season and the difference
in application between primiparous and multiparous goats. The research was conducted on 29
goats, of which 10 were adults and 19 were young goats. Data taken from Vef. Amb protocols
are the unique life number of goats, breed, age, date of insertion of vaginal sponges, date of
hormone application, date and results of pregnancy examination of the goats in the study.
Vaginal gestagens, injectable prostaglandins and gonadotropins were used for estrus
synchronization. Out of a total of 29 goats that were chosen for conducting this research, after
the synchronization protocol, 26 goats showed signs of estrus. All 10 adult goats entered
estrus (100%), and 16 out of a total of 19 (84.2%) were doelings. Out of the total number of
goats, 11 remained pregnant, and the percentage of pregnancies outside the breeding season
after synchronization was 37.9%. Of those goats that entered estrus (N=26), the percentage of
pregnancy was 42.3%. Of the 10 adult goats that entered estrus, 6 were pregnant (60%), and of
the 16 doelings, 5 were pregnant (31.2%). The lower percentage of doelings conception is
attributed to the breed's characteristic as well as to an inadequate mating method (harem
keeping with a male goat). Furthermore, the lower percentage of spikes in estrus after
synchronization is a consequence of the use of young animals that are difficult to prepare for
the placement of vaginal sponges (defloration), and it is easy for sponges that have failed to be
placed deeper into the vagina to fall out.

• Keywords: sinkronizacija; plodnost; sezona; šilježica; koza
• Keywords (english): synchronization; fertility; season; doeling; doe
• Language: croatian
• URN:NBN: urn:nbn:hr:178:942310
• 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: Embargoed access; Embargo expiration date: 2025-01-17
• Created on: 2024-07-17 07:45:09