Proizvodni i reproduktivni pokazatelji dravske guske

master's thesis

• Title (english): Productive and reproductive parameters of growing dravska gees
• Author: Iva Radičević
• Mentor: Dalibor Bedeković (mentor)
• Committee member: Dalibor Bedeković (predsjednik povjerenstva)
• Committee member: Zlatko Janječić (član povjerenstva)
• Committee member: Antun Kostelić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Animal Nutrition); Zagreb
• Defense date and country: 2018-07-09, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Guske su jedna od prvih pripitomljenih domaćih životinja. U Hrvatskoj su guske tradicionalno uzgajane na ekstenzivan način uz najveće kontinentalne rijeke: Dravu, Savu i Dunav te njihove pritoke. Broj dravskih gusaka je danas drastično smanjen, prvenstveno uslijed melioracije Drave te izgradnje hidrocentrala. Cilj ovog diplomskog rada bio je utvrditi reprodukcijske pokazatelje rasplodnih jata dravskih gusaka kao što su broj snesenih jaja, masa jaja, valivost i broj guščića po rasplodnoj guski, te proizvodne pokazatelje guščića do dobi od 4 mjeseci (prirast, završne mase, konzumaciju krmne smjese, konverziju krmne smjese te mortalitet). Istraživanje je provedeno na 12 obiteljskih gospodarstava s područja Varaždinske županije. Istraživani su reprodukcijski pokazatelji 17 rasplodnih jata s omjerom spolova 2:1 i 3:1. Nakon inkubacije i valjenja, guščići su izvagani te su kroz 4 mjeseca praćeni njihovi proizvodni pokazatelji. Prosječna masa rasplodnih jaja iznosila je 141,51 grama, prosječan broj jaja po guski 8,79 komada te svega 4 izvaljena guščića po guski. Valivost je iznosila 46,23 % te nije utvrđena statistička značajnost (P>0,05) između jata s omjerom spolova 2:1 i 3:1. Guščići u starosti jednog dana težili su u prosjeku 98,31 g, a u dobi od 4 mjeseca 3666,87 g. Konverzija krmne smjese na kraju prvog mjeseca povećala se s 1,88 kg/kg na 14,61 kg/kg u 4. mjesecu uzgoja. Temeljem dobivenih rezultata tijekom istraživanja može se zaključiti da su reprodukcijski pokazatelji dravskih gusaka niži nego što je to prikazano u prijašnjim istraživanjima i dostupnoj literaturi što može biti rezultat dugogodišnjeg uzgoja u srodstvu i loše prakse uzgajivača kojom su rasplodna jata formirana isključivo iz vlastitog pomlatka, dok su proizvodni pokazatelji zadovoljavajući.

Abstract (english)

Geese are one of the first domesticated domestic animals. In Croatia, the geese traditionally breeding in an extensive manner with the largest continental rivers: Drava, Sava and Dunav and their tributaries. The number of Dravska geese has drastically decreased today, primarily due to the amelioration of the Drava river and the construction of a hydroelectric plant. The aim of this master’s thesis was to establish reproductive indicators of breeding flocks of Dravska geese such as egg number, egg mass, range and number of gosling per breeding geese, and production indicators of gosling up to the age of 4 months (increment, final mass, feed mix, conversion of fodder mixture and mortality). The research was conducted on 12 family farms from the Varazdin County. The reproductive indexes of 17 breeding flocks with sex ratio 2:1 and 3:1 were investigated. After the incubation and the hatching, the goslings were weighed and their production indicators were monitored for 4 months. The average weight of breeding eggs was 141.51 grams, the average number of eggs per geese was 8.79 pieces, and only 4 were hatched per geese. Hatchability was 46.23% and statistical significance (P>0.05) was not established between flocks with sex ratio 2:1 and 3:1. One-day goslings were average weighed 98.31 g and at 4 months old 3666.87 g. The conversion of feed mixture at the end of the first month increased from 1.88 kg/kg to 14.61 kg/kg in the fourth month of breeding. Based on the results obtained during the research it can be concluded that the reproduction indicators of the Dravska geese are lower than that shown in the previous studies and available literature which may be the result of long-term breeding in the kinship and poor practices of the breeder by which the breeding flock is formed solely from its own breeding, while the production indicators are satisfactory.

• Keywords: dravska guska; guska; reprodukcijski pokazatelji; proizvodni pokazatelji
• Keywords (english): dravska geese; geese; reproductive parameters; productive parameters
• Language: croatian
• URN:NBN: urn:nbn:hr:204:154941
• Study programme: Title: Fisheries and Game Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka ribarstva i lovstva (magistar/ magistra inženjer/inženjerka ribarstva i lovstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2018-07-11 12:00:21