TRAJNA ZAŠTITA ISTARSKOG GOVEDA GOSPODARSKIM KORIŠTENJEM

Istrian cattle is the most numerous autochtonous breed of cattle in Croatia. It represents a vivid monument of time and climate, well provided together by breeders and wider community for allmoust two decades. Negative movements in the population of Istrian cattle caused by global trends in animal production of economically developed societies has been stoped. Actual population of of Istrian cattle is in the phase of recovery and mild stagnation. Reduced further growth of population is conditioned by the lack of verified economic reafirmation which needs to conect interests between breeders and consumers, ensuring in that way the sustainability of the breed. The project of reafirmation of the Istrian cattle, allready underway, through the production programme of "Meat of Istrian cattle" has initialized the consensus of all subjects in the sequence of the food-stuff (breeding, processing, gastronomy) and it gives first positive results.Istarsko govedo najbrojnija je autohtona pasmina goveda u Hrvatskoj. Predstavlja živi spomenik vremena i podneblja o kojem gotovo dva desetljeća brinu vrijedni uzgajivači i šira društvena zajednica. Zaustavljena su negativna kretanja u populaciji istarskog goveda izazvana globalnim trendovima u animalnoj proizvodnji gospodarski razvijenijih društava, a aktualna populacija nalazi se u fazi oporavka i blage stagnacije. Usporavanje daljnjeg rasta populacije uvjetovano je izostankom provjerene gospodarske reafirmacije koja treba interesno povezati uzgajivače i potrošače, osiguravajući time samoodrživost pasmine. Pokrenuti projekt reafirmacije istarskog goveda kroz program proizvodnje \u27\u27Mesa istarskog goveda\u27\u27 potakao je konsenzus svih subjekata u slijedu namirnice (uzgoj, procesing, gastronomija), te daje prve pozitivne učinke

Effect of breed and age on beef carcass quality, fatness and fatty acid composition

The aim of this research was to determine differences in beef carcass fatness and in the fatty acid composition of muscle and adipose tissue of three different breeds slaughtered at the age of 14 months and 19 months. The breed significantly affected the muscle fat content, carcass subcutaneous fat tissue thickness and fatty acid composition of the muscle and subcutaneous fat tissue. Different age at slaughter had no significant effect on analysed traits. The muscle tissue of the Herefords contained a higher (P < 0.05) percentage of C14 : 0 and C16 : 0 fatty acids and fewer long-chain fatty acids than the Simmentals and Charolais. The subcutaneous fat tissue of the Simmentals contained a higher (P < 0.05) percentage of PUFA, PUFA/SFA ratio and n-6 fatty acids. When fed with a high-energy diet, the Herefords proved to have the most fattened carcasses and the highest content of saturated fatty acids in the muscle. Changes in the diet of feedlot cattle should result in a more favourable fatty acid composition

UTJECAJ DUŽINE TRANSPORTA I MIJEŠANJA GRUPA NA KAKVOĆU JUNEĆIH TRUPOVA SIMENTALSKIH BIKOVA

In the last few years, beef producers have had great problems with beef distribution, related primarily to the frequent incidence of dark, firm, dry meat. Consumers are unlikely to buy and consume such meat. The aim of this study was to examine the effect of transport period and mixing of groups during rest period in lairage on the quality of beef carcasses. The study included 40 Simmental bulls aged from 18 to 20 months. Ultimate pH value and meat colour were measured 24 hours post mortem in m. longissimus dorsi and m. gracilis. Only 45% of carcasses were within the standard pHu range. Results of transport period did not show significant effect on beef quality. In contrast to transport period, mixing of groups during rest period in lairage had highly significant adverse effect on beef quality (p<0.001). The effect of mixing of bulls during the resting period of 18 hours, could however be regarded of being the main stress factor.Proizvođači junećega mesa proteklih godina imaju značajne probleme u plasmanu junetine, prvenstveno zbog učestalije pojave tamnog suhog i tvrdog mesa (DFD). Potrošači takvo meso nerado kupuju i konzumiraju. Cilj ovog istraživanja je utvrditi značajnost utjecaja dužine transporta i miješanja grupa bikova tijekom odmora u stočnom depou na kakvoću junećih trupova. Istraživanje je uključilo 40 simentalske junadi u dobi od 18 do 20 mjeseci. Mjerenje konačne pH vrijednosti i boje mesa vršena su 24 sata post mortem na m. longissimus dorsi i m. gracilis. Samo je 45% trupova imalo vrijednost kpH u poželjnom intervalu. Istraživanjem nije utvrđen značajan utjecaj dužine transporta na pokazatelje kakvoće junećih trupova. Miješanje grupa bikova tijekom odmora u stočnom depou ima značajan utjecaj na kakvoću junećih trupova (p<0.001). Utjecaj miješanja grupa bikova tijekom odmora u stočnom može se smatrati jednim od glavnih uzročnika stresa odgovornog za pojavu DFD junećega mesa

UTJECAJ DUŽINE TRANSPORTA I MIJEŠANJA GRUPA NA KAKVOĆU JUNEĆIH TRUPOVA SIMENTALSKIH BIKOVA

In the last few years, beef producers have had great problems with beef distribution, related primarily to the frequent incidence of dark, firm, dry meat. Consumers are unlikely to buy and consume such meat. The aim of this study was to examine the effect of transport period and mixing of groups during rest period in lairage on the quality of beef carcasses. The study included 40 Simmental bulls aged from 18 to 20 months. Ultimate pH value and meat colour were measured 24 hours post mortem in m. longissimus dorsi and m. gracilis. Only 45% of carcasses were within the standard pHu range. Results of transport period did not show significant effect on beef quality. In contrast to transport period, mixing of groups during rest period in lairage had highly significant adverse effect on beef quality (p<0.001). The effect of mixing of bulls during the resting period of 18 hours, could however be regarded of being the main stress factor.Proizvođači junećega mesa proteklih godina imaju značajne probleme u plasmanu junetine, prvenstveno zbog učestalije pojave tamnog suhog i tvrdog mesa (DFD). Potrošači takvo meso nerado kupuju i konzumiraju. Cilj ovog istraživanja je utvrditi značajnost utjecaja dužine transporta i miješanja grupa bikova tijekom odmora u stočnom depou na kakvoću junećih trupova. Istraživanje je uključilo 40 simentalske junadi u dobi od 18 do 20 mjeseci. Mjerenje konačne pH vrijednosti i boje mesa vršena su 24 sata post mortem na m. longissimus dorsi i m. gracilis. Samo je 45% trupova imalo vrijednost kpH u poželjnom intervalu. Istraživanjem nije utvrđen značajan utjecaj dužine transporta na pokazatelje kakvoće junećih trupova. Miješanje grupa bikova tijekom odmora u stočnom depou ima značajan utjecaj na kakvoću junećih trupova (p<0.001). Utjecaj miješanja grupa bikova tijekom odmora u stočnom može se smatrati jednim od glavnih uzročnika stresa odgovornog za pojavu DFD junećega mesa

EFFECTS DIFFERENT TRANSPORT PERIOD AND MIXING OF GROUPS ON MEAT QUALITY OF SIMMENTAL BULLS

Summary In the last few years, beef producers have had great problems with beef distribution, related primarily to the frequent incidence of dark, firm, dry meat. Consumers are unlikely to buy and consume such meat. The aim of this study was to examine the effect of transport period and mixing of groups during rest period in lairage on the quality of beef carcasses. The study included 40 Simmental bulls aged from 18 to 20 months. Ultimate pH value and meat colour were measured 24 hours post mortem in m. longissimus dorsi and m. gracilis. Only 45% of carcasses were within the standard pHu range. Results of transport period did not show significant effect on beef quality. In contrast to transport period, mixing of groups during rest period in lairage had highly significant adverse effect on beef quality (p&lt;0.001). The effect of mixing of bulls during the resting period of 18 hours, could however be regarded of being the main stress factor

The genetic structure and sustainability of autochthonous cattle breeds in Croatia

Prepoznavanje i potvrđivanje autohtonosti pasmine temeljna je odrednica u njenom očuvanju, budući da se na njoj temelji kontinuitet logike uzgojnog rada kojim se gubitak genetske osobitosti nastoji svesti na najmanju mjeru. Razložno je činiti redoviti osvrt na minuli uzgojni rad na autohtonim pasminama kako bi uočili manjkavosti u pogledu genetske ali i ekonomske održivosti. Analizirano je stanje genetske strukture i održivosti dvaju hrvatskih autohtonih pasmina goveda koje su više od desetljeća u žiži znanstvenog i šireg interesa. Istarsko govedo samo je dijelom konsolidirano u genetskom pogledu, uz još uvijek nejasnu uzgojnu strategiju u pogledu dostupnih linija i majčinskih rodova. Procijenjena razina uzgoj u srodstvu istarskog goveda na temelju rodoslovlja umjerene je razine (0,0175), no broj i distribucija linija ukazuju na potrebu pažljivije provedbe uzgojnog programa. Razina uzgoja u srodstvu (izračunata na temelju rodoslovlja) slavonsko srijemskog podolca (0,0186) ukazuje na sustavan selekcijski rad, no brojno stanje populacije i distribucija grla ukazuju na postojeću ozbiljnost situacije. Uzgajivačima nezadovoljavajuća visina novčanih poticaja, uz nerazvijene programe gospodarskog korištenja, dovode u pitanje i fizičku održivost populacije u aktivnom in situ programu očuvanja.Recognizing and affirmation of autochthonism are basic points protection breeds, whereas is ground of continuity of breeding work which loss genetic rarity reduces to minimum. Necessary is seems the routine overview over the breeding work on autochthonous breeds in order to notice inadequacies in view of genetic and also economic sustainability. Has been analyzed genetic structure and sustainability of two autochthonous cattle breeds which are more than decades in center scientific and wider interest. The Istrian cattle has been partly consolidated in the genetic sight, beside still is unclear breeding strategy with regard to the accessible lineages. Has been estimated the level inbreeding of Istrian cattle on the basis of pedigree data is moderate level (0,0175), but the number and distribution of lineages suggest the needs of more careful implementation breeding program. Levels of inbreeding (calculated on the basis of pedigree) Slavonian syrmian podolian cattle (0,0186) points to the systematic selection work, but numerical situation of populations and distribution of herds suggest on the existing seriousness situations. Breeders unsatisfactory heights of financial stimulus, by undeveloped programs of economic use, call in question too physical sustainability populations the in situ program preservations