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Paper Information

Journal:   THE SCIENTIFIC JOURNAL OF AGRICULTURE (SJA)   MARCH 2008 , Volume 30 , Number 4-A; Page(s) 25 To 32.
 
Paper: 

DETERMINATION OF PREFER-FATTENING AGE OF TURKEY-GHASHGHAII MALE LAMBS

 
 
Author(s):  NOUROLLAHI H.*, EDRISS M.A., SAMEE A.H.
 
* AGRICULTURE AND NATURAL RESOURCE RESEARCH CENTER PROVINCE OF FARS, IRAN
 
Abstract: 

This trial was conducted to investigate the effects of fattening periods on growth and carcass characteristics of Turkey-Ghashghaii male lambs. 80 lambs with age of 90±7 days and with an average body weight of 23.1±2.5 kg were used. At the end of each period of 60, 90, 120 and 150 days, 16 lambs were slaughtered for evaluating the carcass characteristics. Results indicated fattening period showed a highly significant effect (P<0.01) on body weight and feed conversion ratio, whereas the effect on daily gain, carcass efficiency and meat percentage was P>0.05. There was a significant effect on fat and bone percentages (P<0.05) while increasing fattening period and fat percentage increased but bone percentage decreased. The highest carcass meat (49.8%), fat (17.9%) and bone (19.2%) were found after 120, 150 and 60 days respectively, and the lowest (47.1, 13.7 and 13.9%) were. found after 150, 60 and 150 days respectively. By increasing fattening period, fat-tail percentage increased and the highest (20.1%) and the lowest (17.4%) respectively were found after 150 and 60 days. The eye muscle area in different fattening period was 11.07, 14.23, 15.50 and 15.73 cm2 respectively and was highly significant (P<0.01) for 60 days fattening compared with other periods. Effect of fattening period on carcass composition was significant. With increasing fattening period the percentage of moisture, protein and ash decreased but fat percentage increased. The best period for gaining meat as a most important factor was 90 days.

 
Keyword(s): FATTENING LAMB, CARCASS CHARACTERISTICS, TURKEY-GHASHGHAII SHEEP
 
References: 
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