Svojstva trupa i boja mesa janjadi iz različitih sustava proizvodnje.

Sheep production in Croatia is primarily based on indigenous breeds and different production systems determined by specific environmental conditions and tradition. The aim of this research was to determine the influence of sex on birth weight, daily gain, pH value, and meat colour as well as the slaughter and carcass traits of lambs derived from three different sheep production systems. For that purpose a total of 306 lambs from three breeds reared in three production systems with different production goals were randomly selected: I - milk production, Pag sheep (total 112 lambs: 66 males and 46 females); II - lamb meat production, Dalmatian Pramenka (total 96 lambs: 52 males and 44 females), and III - milk and lamb meat production, Istrian sheep (total 98 lambs: 54 males and 44 females). Sex only had a significant influence on daily gain and age (P<0.01), and weight at slaughter (P<0.05) in production system III. The effect of sex on slaughter characteristics between the investigated breeds was variable. The highest pH value of m. longissimus dorsi (MLD) was determined in production system III, while the L* value of the same muscle differed (P<0.001) between all three production systems and the b* value was significantly lower in production system II. The highest value of L* and b* parameters of m. rectus abdominis (MRA) was determined in production systems III and I, respectively. Sex significantly affected the b* parameter of MRA in production system I, L* parameters of MLD and MRA in production system II, and pH value and L* parameter of MLD in production system III. The results of this study indicate that in a rather small geographical area the possibilities exist for the production of lamb carcasses with specific quality characteristics.Ovčarska proizvodnja u Hrvatskoj primarno se temelji na izvornim pasminama i različitim sustavima proizvodnje te je određena tradicijom i specifičnim uvjetima okoliša. Cilj ovog istraživanja bio je utvrditi utjecaj spola na porođajnu masu, dnevni prirast, pH vrijednost i boju mesa kao i klaoničke pokazatelje te odliku trupova janjadi iz tri različita sustava ovčarske proizvodnje. Za tu svrhu nasumično je odabrano ukupno 306 janjadi triju pasmina uzgajane u tri različita proizvodna sustava: I. – proizvodnja mlijeka, paška ovca (ukupno 112 janjadi: 66 muške i 46 ženske); II. – proizvodnja janjećeg mesa, dalmatinska pramenka (ukupno 96 janjadi: 52 muške i 44 ženske) i III. – proizvodnja mlijeka i janjećeg mesa, istarska ovca (ukupno 98 janjadi: 54 muške i 44 ženske). Spol je značajno utjecao na dnevni prirast i dob (P<0,01) te tjelesnu masu prije klanja (P<0,05) samo u proizvodnom sustavu III. Utvrđen je varijabilan utjecaj spola na klaoničke pokazatelje janjadi istraživanih pasmina. Najviša pH vrijednost m. longissimus dorsi (MLD) utvrđena je u proizvodnom sustavu III namijenjenom proizvodnji mlijeka i mesa. L* vrijednost MLD-a razlikovala (P