Naked neck chicken of Serbian and foreign origin: Carcass characteristic

Abstract

Objective of the research was to establish the growth of body mass and slaughter characteristics of native, autochthonous breed of chickens called Naked neck of different varieties (white, black, gray) in our country and French hybrid Naked neck Farm Q, reared in extensive systems. Fattening lasted for 91 (Farm Q) and 98 (naked neck) days. In the paper, the body masses prior to slaughtering are presented, as well as slaughter yields (traditionally dressed carcass, ready to grill, ready to cook), absolute and index values of conformation measures (shank and keel length, breast deep and angle, thigh girth) and shares of major carcass parts. Average body mass of chickens prior to slaughtering varied from 1371.0 g (FQ) to 1080.26 g (B) and 1295.0g (NN). Slaughter yield, i.e. dressing percentage, 'traditionally dressed carcass' varied from 79.4% (FQ) to 75.4% (NN), slaughter yield 'ready to cook' from 72. 4% (FQ) to 68.1% (NN) and slaughter yield 'ready to grill' from 62.6% (FQ) to 58.7 (NN). Obtained mean values of conformation measures indicated poor development and built of carcasses of both sexes and were results of strong effect of body mass of chickens. Significant effect of genotype and sex on differences between mean values obtained for major carcass parts (breast, thigh + drumstick) was established in share of breast in Farm Q females and Farm Q males in share of thigh + drumstick. Farm Q chickens had statistically significantly higher share of thigh + drumstick, and chickens of genotype Naked neck had higher share of breasts. Further research is necessary which would confirm the hypothesis that naked neck chickens (both investigated genotypes) have better nutritive quality of meat for which consumers which prefer natural food are willing to pay the higher price.

Cilj ispitivanja je bio da se ustanovi porast telesne mase i klanične karakteristike autohtone rase pilića nacked neck različitih varijeteta (white, black, gray), u našoj zemlji, i francuskog hibridnog nacked neck Farm Q, gajenih u ekstenzivnim sistemima. Tov je trajao 91 (Farm Q) i 98 (nacked neck) dana. U radu su prikazane telesne mase pilića pred klanje, klanični randmani (traditionally dressed carcass, ready to grill, ready to cook), apsolutne i indeksne vrednosti mere konformacije (shank and keel length, breast deep and angle, thight girth) i udeli važnijih delova trupa. Prosečna telesna masa pilića pred klanje bila je od 1371.0 g (FQ) do 1295.0 g (NN). Klanični randman 'traditionally dressed carcass' varirao je od 79.4% (FQ) do 75.4% (NN), randman 'ready to cook' od 72. 4% (FQ) do 68.1% (NN) i randman 'ready to grill' od 62.6% (FQ) do 58.7 (NN). Dobijene srednje vrednosti mera konformacije ukazali su na lošu građu trupova pilića oba pola i rezultat su jakog uticaja telesne mase pilića. Značajan uticaj genotipa i pola na razlike između srednjih vrednosti vrednijih delova trupa (grudi, bataci + karabataci) je ustanovljen kod udela grudi kokica Farm Q kao i petlića Farm Q kod udela batak + karabatak. Pilići Farm Q su imali statistički značajno veći udeo batak + karabatak, a pilići genotipa nacked neck udeo grudi. Neophodna su dalja istraživanja koja će potvrditi hipotezu da pilići naked neck (oba ispitivana genotipa) imaju bolji nutritivni kvalitet mesa za koji su potrošači, ljubitelji prirodne hrane spremni da plate višu cenu.