Evaluation of Various Protein Sources for Growing  and Finishing Awssi Lambs

Abdullah Y. ABDULLAH; Marwan M. MUWALLA; Muhammed Y. HARB

Article Details

Evaluation of Various Protein Sources for Growing and Finishing Awssi Lambs

Authors:

Abdullah Y. ABDULLAH | Marwan M. MUWALLA | Muhammed Y. HARB

Publisher:

TUBITAK

Journal:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 5, pp.475-482

Document Type:

Article

Publication Date:

4/1999

Document Language:

Turkish

Document ID (Org No.):

2000771892

Frequency:

Bimonthly

eISSN:

1303-6181

pISSN:

1300-0128

Keywords:

Awassi lambs; protein; performance; feedlot; carcass characteristics.

Abstract:

 

Sixty four newly weaned Awassi lambs (initial BW = 21.0 ± 0.75 kg) from both sexes were randomly allocated to one of  the four treatments (8 males & 8 females/treatment) and grouped into 8 pens with 8 lambs from each sex per pen. They were then  used to evaluate the different sources of protein on a finishing performance trial. The lambs were fed for a period of 114 days using  four different rations. These rations were so formulated as to contain the same percentage of crude protein 14 %, but from  different sources namely sunflower seed meal (SSM), bitter vetch seed (BVS) and urea. Comparisons were made with the control  diet having soybean meal (SBM) as a major source of protein. Four animals from each group were slaughtered and the right leg  from each carcass was dissected for examination of differences in muscularity and for carcass and leg composition.  Average feed intake over the first 8 weeks of the trial increased linearly (P0.001) higher final live weight (47.2 Vs  37.9 kg), average live weight gain (26719 Vs 16409g) and average daily gain (234 Vs 144 g/day) than female lambs.  The SBM ration had significantly a higher feed efficiency value compared to the other experimental rations (3.22, 4.20, 3.99, and  3.77 kg/kg for SBM, SSM, BVS, and urea, respectively). The production responses to the rations were observed only in the first 14  days of the experiment. Thereafter, no significant differences in intake on body weight were obtained through day-56 or day-114.  Thus, the BVS and urea rations both gave a high feed efficiency which was comparable to that of the SBM ration (6.21, 6.20 Vs  6.10 kg/kg for BVS, urea and SBM, respectively).  The male lambs showed higher feed efficiency (P0.05) on hot and cold carcass weight, dressing-out pencentage, tail fat weight, all non-carcass component weights,  all carcass linear dimensions or on the dissected leg tissue weight. The male lambs, however, had higher (P.

 

Sixty four newly weaned Awassi lambs (initial BW = 21.0 ± 0.75 kg) from both sexes were randomly allocated to one of  the four treatments (8 males & 8 females/treatment) and grouped into 8 pens with 8 lambs from each sex per pen. They were then  used to evaluate the different sources of protein on a finishing performance trial. The lambs were fed for a period of 114 days using  four different rations. These rations were so formulated as to contain the same percentage of crude protein 14 %, but from  different sources namely sunflower seed meal (SSM), bitter vetch seed (BVS) and urea. Comparisons were made with the control  diet having soybean meal (SBM) as a major source of protein. Four animals from each group were slaughtered and the right leg  from each carcass was dissected for examination of differences in muscularity and for carcass and leg composition.  Average feed intake over the first 8 weeks of the trial increased linearly (P0.001) higher final live weight (47.2 Vs  37.9 kg), average live weight gain (26719 Vs 16409g) and average daily gain (234 Vs 144 g/day) than female lambs.  The SBM ration had significantly a higher feed efficiency value compared to the other experimental rations (3.22, 4.20, 3.99, and  3.77 kg/kg for SBM, SSM, BVS, and urea, respectively). The production responses to the rations were observed only in the first 14  days of the experiment. Thereafter, no significant differences in intake on body weight were obtained through day-56 or day-114.  Thus, the BVS and urea rations both gave a high feed efficiency which was comparable to that of the SBM ration (6.21, 6.20 Vs  6.10 kg/kg for BVS, urea and SBM, respectively).  The male lambs showed higher feed efficiency (P0.05) on hot and cold carcass weight, dressing-out pencentage, tail fat weight, all non-carcass component weights,  all carcass linear dimensions or on the dissected leg tissue weight. The male lambs, however, had higher (P.

Article Details

Evaluation of Various Protein Sources for Growing and Finishing Awssi Lambs

Authors: Abdullah Y. ABDULLAH | Marwan M. MUWALLA | Muhammed Y. HARB

Publisher: TUBITAK

Journal: Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 5, pp.475-482

Document Type: Article

Publication Date: 4/1999

Document Language: Turkish

Document ID (Org No.): 2000771892

Frequency: Bimonthly

eISSN: 1303-6181

pISSN: 1300-0128

Awassi lambs; protein; performance; feedlot; carcass characteristics.

Issues

Authors:

Abdullah Y. ABDULLAH | Marwan M. MUWALLA | Muhammed Y. HARB

Publisher:

TUBITAK

Journal:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 5, pp.475-482

Document Type:

Article

Publication Date:

4/1999

Document Language:

Turkish

Document ID (Org No.):

2000771892

Frequency:

Bimonthly

eISSN:

1303-6181

pISSN:

1300-0128