Open AccessMorphological and qualitative indicators of broiler cross of cockerels “Cobb 500”
Author(s) -
В Е Никитченко,
Д В Никитченко,
В.А. Федотов,
И. А. Егоров,
Tatiana V. Egorova
Publication year - 2018
Publication title -
vestnik rossijskogo universiteta družby narodov. seriâ agronomiâ i životnovodstvo
Language(s) - English
Resource type - Journals
eISSN - 2312-7988
pISSN - 2312-797X
DOI - 10.22363/2312-797x-2018-13-2-138-147
Subject(s) - broiler , zoology , cobb , biology , leg muscle , muscle mass , body weight , anatomy , medicine , endocrinology , genetics , physical medicine and rehabilitation
The dynamics of live weight and the morphological composition of carcasses of broiler chickens Cobb 500 at 1-, 21-, 28-, 33-, 38- and 42-day-old ages were studied. It was found that the increase in the average daily growth in broiler males is observed up to the 33-day age, on average they are 62.7 g, then up to 42 days - 85.56 g. The slaughter yield in 33-day broilers was 71.83%, 42 days - 73.12%. The carcass contains the most muscle tissue, from 994 g (33 day), or 65.57%, to 1410 g, or 66.95% (42 days). By the 42-day age of the males, the absolute mass of muscles is 178.26 times higher than the weight of the 1-day-old ones. The relative mass of bones in the carcasses of 33-day-old males is 20.32%, 42-day-olds - 16.52%. The anatomical cutting of the carcasses shows that the breast yield is 35.95-36.23%, the hips - 17.15-17.09%, the shins - 14.38-14.20%, the wings -11.15-10.68%. It is established that anatomically parts of the carcass differ in quality because of the different ratio of muscle tissue and bones in them.