The Effect of Using Different Proportions of Fat Poultry Slaughterhouses in Diets and their Effect on Some Carcasses Characteristics of Awassi Lambs

Abstract

This study was conducted to demonstrate the effect of adding fat from poultry at different levels to the diet of Awassi lambs on the quantitative characteristics of the carcass. In this study, 12 lambs of Awassi sheep were used, at the age of 4-4.5 months, with an average weight of 0.85 ± 22.16 kg. The animals were randomly divided equally into four groups, the first group was fed. On a diet devoid of fat from poultry slaughterhouses, the comparison group was considered (T1), while the other three groups were fed on diets containing fat from poultry at a rate of 2, 4, and 6% for the second (T2), third (T3), and fourth (T4) treatments, respectively. Animal weights weekly Throughout the study period (120 days). All lambs were slaughtered, skinned and hollowed out until the end of the study period. The results were as follows:

1-The treatment (T1) was highly significant (P < 0.01) in the amount of total and daily intake of concentrated and total alfalfa feed, and the total feed (concentrated and alfalfa) compared with diets containing 2, 4 and 6% of fat from poultry.

2- The third and fourth treatments were highly significant (P < 0.01) in the final weight of lambs compared with T1 and T2 from poultry abattoir waste fat, and treatment T4 was highly significant (P < 0.01) in the characteristic of daily and total weight gain compared with T1, and it took the form of Feed conversion efficiency improved in all study parameters.

 3- The results of the statistical analysis showed that the treatments (T3 and T4) had a highly significant superiority (P<0.01) in empty body weight over ((T1), and in the same context the fourth treatment outperformed and constitutes a highly significant (P<0.01)) in hot and cold carcass weight over (T1). Treatments T3 and T4 had the highest percentage of purification from hot carcass weight compared to treatment T2 and T1, which did not differ significantly from the rest of the treatments, while the results did not show significant differences in percentage of purification from cold carcass weight between fat treatments, while treatments T3 and T4 had the highest percentage of purification. of empty body weight compared with treatment T2 and T1. As for the percentage of  loss in the carcasses of Awassi lambs, treatment T3 recorded a highly significant decrease (P<0.01)) in the percentage of loss compared with T1 and T2.