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Effects of feed refreshing frequency on growth and carcasscharacteristics of Awassi lambs     
Yazarlar
Mahmut Keskin
Mustafa Kemal Üniversitesi, Türkiye
Sabri Gül
Mustafa Kemal Üniversitesi, Türkiye
Prof. Dr. Ahmet ŞAHİN Prof. Dr. Ahmet ŞAHİN
Ahi Evran Üniversitesi, Türkiye
Şerafeddin Kaya
Mustafa Kemal Üniversitesi, Türkiye
Metin Duru
Uşak Üniversitesi, Türkiye
Prof. Dr. Özkan GÖRGÜLÜ Prof. Dr. Özkan GÖRGÜLÜ
Ahi Evran Üniversitesi, Türkiye
Suat Şahinler
Uşak Üniversitesi, Türkiye
Osman Biçer
Mustafa Kemal Üniversitesi, Türkiye
Fatemeh Sadrzadeh
Özet
Sixty, two-month old male Awassi lambs were used in this study to investigate the effects of feed refreshing (FR) frequencies on their growth and carcass characteristics over a period of 65 days. Treatments were: Feed refreshing at 2 h (FR2), 4 h (FR4), 8 h (FR8), 12 h (FR12) and 24 h (FR24) intervals. The lambs were fed individually. At the onset of each refreshing period the lambs were offered fresh feed ad libitum. Daily feed intakes, weekly live weights and carcass characteristics were recorded. Daily feed intakes per lamb per treatment were: 1.13 kg, 1.05 kg, 1.00 kg, 0.98 kg and 0.95 kg; daily gains were 193.6 g, 180.6 g, 148.6 g, 169.3 g and 146.4 g; feed conversion ratios (kg feed/kg gain) were 6.1, 6.7, 7.2, 7.2 and 7.5; hot carcass weights were 13.0 kg, 13.1 kg, 12.1 kg, 13.3 kg and 13.1 kg; dressing percentages were 42.3%, 42.4%, 39.9%, 40.2% and 41.2%; the proportion of muscle in the carcass was 52.0%, 55.2%, 55.6%, 55.8% and 54.8%; bone ratio was 20.4%, 20.3%, 21.9%, 21.1% and 20.9%; subcutaneous fat ratio was 16.9%, 14.2%, 12.9%, 12.7% and 14.0% and intramuscular fat ratio was 8.8%, 7.1%, 6.8%, 8.7% and 7.7% in FR2, FR4, FR8, FR12 and FR24 treatments, respectively. Results showed that frequent feed refreshing stimulated feed intake and daily gain without affecting carcass characteristics. © South African Society for Animal Science.
Anahtar Kelimeler
Body components | Daily gain | Feeding system | Lamb
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı SOUTH AFRICAN JOURNAL OF ANIMAL SCIENCE
Dergi ISSN 0375-1589
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 01-2007
Cilt No 37
Sayı 4
Sayfalar 248 / 255
Doi Numarası 10.4314/sajas.v37i4.4097