Relationship of slaughter carcass traits of Balkan goat kids

Abstract

Objective of this study is to determine the correlation between slaughter traits of kids of Balkan goat breed. Research was carried out in underdeveloped region of Serbia, on altitude of approximately 850 m. Semiintensive breeding system, of housing and care of goats was applied. Results of the study of slaughter properties are presented in this paper, also correlation between certain measures on carcass and carcass sides established in 96 kids of Domestic Balkan breed (gender ratio 50:50), slaughtered at the age of 90 days. Average dressing percentage of warm carcass with head and offal of investigated kid population was 58.19%, whereas the value of the dressing percentage of cold carcass with head and offal was 45.19%. Male kids had statistically significantly (at the level of P (lt) 0.05 and P (lt) 0.01) higher values of carcass mass and linear carcass and carcass side measures compared to female kids. Data on established correlation coefficients between slaughter traits of Domestic Balkan kids reflect presence of highly positive and statistically significant (P (lt) 0.001) correlative dependence. Linear regression coefficients of pre-slaughter body mass of kids, as well as coefficients of determination of linear regression (from 0.41 to 0.99) indicate that this trait has very significant effect on all dressing percentages and carcass and carcass side measures. Considering the expression of slaughter traits and correlation between them in kids of Balkan breed, obtained results should be used for formulating of future programs designed to improve the production of meat from autochthonous goat breeds.

Cilj ovog rada je da se utvrdi povezanost (korelacija) između klaničnih parametara jarića balkanske rase koza. Istraživanja su izvedena u nerazvijenom području R Srbije na nadmorskoj visini od oko 850 m. Primenjen je poluintenzivan sistem odgoja, smeštaj i nege koza. U radu su prikazani rezultati ispitivanja klaničnih karakteristika i utvrđena korelaciona povezanost osobina pojedinih mera na trupu i polutkama, kod 96 jaradi domaće balkanske koze (sa odnosom polova 50:50) koja su zaklana u uzrastu od 90 dana. Prosečan randman toplog trupa sa glavom i iznutricama kod jaradi ispitivane populacije iznosio je 58,19% dok je vrednost randmana hladnog trupa sa glavom bez iznutrica bila 45,19%. Muška jarad su imala statistički značajno teža i imala su veće linearne mere trupa (na nivou P (lt) 0,05 i P (lt) 0,01) u poređenju sa ženskim. Podaci o koeficijentima korelacije između ispitivanih klaničnih karakteristika jaradi domaće balkanske koze, odražavaju postojanje visoko pozitivne i statistički značajne (P (lt) 0,001), korelativne zavisnosti. Linearni regresioni koeficijenti telesne mase jaradi pred klanje, kao i koeficijenti determinacije linearne regresije (od 0.41 do 0.99), ukazuju na to da ova osobina veoma značajno utiče na sve randmane i mere na trupu i polutkama. Imajući u vidu ispoljenost i povezanost ispitivanih klaničnih karakteristika kod jaradi balkanske rase koza, dobijeni rezultati treba da se iskoriste u formulisanju budućih programa unapređenja proizvodnje mesa kod autohtnonih rasa koza.