Manuscript Title:

EFFECT OF BREED AND SLAUGHTER WEIGHTS ON MEAT QUALITY OF MALE LAMBS

Author:

REYZAN A. HAMO, REDEER K. SAADULLAH, TAHER M. TAHER, FATAH M. KHALAF

DOI Number:

DOI:10.17605/OSF.IO/CJWXG

Published : 2022-10-10

About the author(s)

1. REYZAN A. HAMO - Animal Production Department, College of Agricultural Engineering Science, University of Duhok, Kurdistan Region-Iraq.
2. REDEER K. SAADULLAH - Animal Production Department, College of Agricultural Engineering Science, University of Duhok, Kurdistan Region-Iraq.
3. TAHER M. TAHER - Animal Production Department, College of Agricultural Engineering Science, University of Duhok, Kurdistan Region-Iraq.
4. FATAH M. KHALAF - Animal Production Department, College of Agricultural Engineering Science, University of Duhok, Kurdistan Region-Iraq.

Full Text : PDF

Abstract

The aim of the present study was to compare meat quality traits of Karadi and Awassi male lambs at different slaughter weights raised intensively. Fifteen male lambs from either Awassi or Karadi were randomly blocked by live weight into three slaughter weights (30 kg, 40 kg and 50 kg), all lambs were fed on iso energetic and nitrogenous concentrated diet ad libitum. lambs were slaughtered once they reached a target weight. Proximate results showed moisture and fat percentage were affected by weight with the highest moisture % and lowest fat % for lambs slaughtered at 30 kg compared to those slaughtered at 50 kg. Crude protein, ash, and myoglobin were not affected by either breed or slaughter weight. Drip loss and cooking loss were not influenced by either breed or slaughter weight. Free fatty acid % in meat increased significantly by slaughter weight from 0.67% to 0.87% for 30 kg and 50 kg, respectively, during storage period. Similarly, free fatty acid % was increased significantly by storage period from 0.70% at day 1 to 0.88% at day 7 of storage period. TBARS values in meat was not affected by breed and slaughter weight, whereas during the storage period TBARS values increased from 0.65 mg MDA/kg meat at day 1 to 2.7 mg MDA/kg meat at day 7. Neither breed nor slaughter weight had an adverse effect on meat quality characteristics.


Keywords

Breed; slaughter weight; proximate; lipid oxidation; free fatty acid.