title: Effects of age and period of fattening on carcass and non-carcass characteristics of one-humped camels.
abstract: This study was conducted to compare the carcass characteristics and quantity of carcass and non-carcass components of 2- and 3-year-old male camels fattened for either 3 or 6 months. Twelve 2-year-old camels with an average body live weight of 268.5 ± 21.4 kg and twelve 3-year-old camels with an average body live weight of 307.5 ± 29.9 kg were used in a completely randomized design with a 2 × 2 factorial arrangement. For carcass analysis, three camels from each group were selected and slaughtered. The results showed that camel age and fattening period had no significant effect on average daily gain (ADG). Older camels and a longer fattening period resulted in heavier hot and cold carcass weights. Three-year-old camels had a higher dressing percentage compared to 2-year-old camels, regardless of the period of fattening. Analysis of non-carcass components showed that the heaviest component was the hide and 2-year-old camels fattened for 90 days had the greatest weight of hide as percentage of cold carcass weight. Total muscle weight was greater for the 3-year-old camels compared to the 2-year-old ones, regardless of the fattening period, and camels fattened for 180 days had heavier weight than those fattened for 90 days, regardless of age at fattening. However, the greatest weight of total muscle was detected in camels at 2 years of age fattened for 180 days when it was expressed as percentage of carcass weight. The highest and the lowest total fat content as kilogram or as percentage of cold carcass was observed in 3-year-old camels fattened for 180 days and 2-year-old camels fattened for 180 days, respectively. Our results suggested that the best age for slaughtering is 2 years old with the fattening period of 180 days.
authors.affiliation: Animal Science Research Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran.
authors.forename: Davoud Ali
authors.initials: DA
authors.lastname: Saghi
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.
authors.forename: Ali Reza
authors.initials: AR
authors.lastname: Shahdadi
authors.affiliation: Research Center of Special Domestic Animals, Research Institute at University of Zabol, Zabol, Iran. Am.Mokhtarpour@uoz.ac.ir.
authors.forename: Amir
authors.initials: A
authors.lastname: Mokhtarpour
mesh_terms: D000367:Age Factors; D000821:Animal Feed; D000822:Animal Husbandry; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001823:Body Composition; D002162:Camelus / Q000502:physiology*; D008297:Male; D008460:Meat / Q000592:standards*; D015430:Weight Gain
keywords: Carcass characteristics; Dromedary; Fattening age; Fattening period