Effect of Addition Protected Fatty Acids in Ruminant Rations on Productive Performance of Suffolk X Ossimi Crossbred Ewes During Different Production Stages

Abstract

his study was conducted to evaluate the effect of dietary supplementation of protected fatty acids (FA) on nutrient digestibility, rumen parameters, some blood components, milk yield and its composition and lambs growth performance during the pre-weaning period (2 months old) of Suffolk x Ossimi ewes. A total of 36 pregnant ewes, weighing on the average 64.89±1.57 kg in their 2 nd-4 th parities and aged 2.5-4.5 years were divided into three similar groups according to their body weight (12 ewes each) using a complete randomized block design .The feeding trial started 60 days before lambing (late pregnancy period) and continued 60 days after lambing (suckling period). The experimental rations were offered into animals with the rate of 0, 4 and 6% calcium-soap as protected fatty acids (based on DM intake). Body weight, total gain and daily gain of the new born lambs were recorded during the preweaning period (suckling period). The basal rations composed of 60% concentrate feed mixture (CFM) and 40% roughage (berseem 30% + rice straw 10%, RS).Three digestibility trials were carried out using nine Suffolk x Ossimi crossbred rams with average 62 kg BW and aged 2-2.5 years to determine the digestibility and feeding values of the experimental rations. Data showed that significant higher digestibility at (P <0.05) of OM, CP, CF, EE and NFE for fat supplemented groups than those of control one. Rumen parameters (pH, total VFAs and ammonia-N concentration) were higher in supplemented groups than those of the control one. Values of concentrations of blood plasma total protein and its fractions, glucose, total cholesterol, triglycerides and total lipids of experimental ewes were higher in for supplemented groups than that of control one in the two stages of the whole production cycle. Supplemented fat treatments (group) led to significant increases in birth, weaning weights and total gain of lambs, and the highest values were occurred with FA6. Milk yield was higher significantly in supplemented groups than that of control one as well as its composition (fat, total solids and protein, %) were followed the same trend of milk yield among treatments. Generally, it could be concluded that the supplementation of calcium salt of fatty acids at different levels (FA4 or FA6) for rations of Suffolk x Ossimi crossbred ewes improved digestibility, feeding values, increased lambs birth weight and milk yield and its composition beside better feed efficiency, with superiority of 6% level (FA6).

Enrichment of chocolate byproducts and protected fats with zinc to partially replace corn in diets of early lactation Holstein cows

“…Additionally, treatments did not affect the concentrations of ALT and AST, which were within reference ranges for healthy cows (Jackson and Cockcroft, 2007), indicating minimal effects of treatments on liver enzymes as evidences of the absence of negative effects on liver function. Replacing corn with chocolate byproducts, protected fats, or their mixture did not affect the blood WBC, RBC, hemoglobin, hematocrit, MCV, MCH, MCHC or platelets, confirming our assumption that feeding chocolate byproducts and protected fats did not affect the health of the cows (Ghoniem and Atia, 2020).…”

“…These results indicate an altered lipids metabolism in cows and probably reproductive hormones (Singh et al, 2015). Others (Ghoniem and Atia, 2020) reported similar results when they fed ewes on protected fats.…”

“…Replacement of corn with chocolate byproducts, protected fats and their mixture increased cholesterol by 10.0, 24.2 and 17.0%, and triglyceride by 9.2, 12.8 and 9.2%. The increased concentrations of cholesterol and triglycerides may be attributed to increased absorption of fatty acids from the protected fats and chocolate byproducts containing diets through the gut and/or the fact that feeding fat is associated with depression of lipogenic enzyme activities by liver and adipose tissues (Ghoniem and Atia, 2020). These results indicate an altered lipids metabolism in cows and probably reproductive hormones (Singh et al, 2015).…”

Chocolate Byproducts and Protected Fats Enriched with Chromium to Replace Corn in Diets of Early Lactation Holstein Cows: Feed Utilization, Blood Profile, and Lactational Performance

“…Values of both AST and ALT were within reference ranges for healthy cows (Jackson and Cockcroft, 2007). Additionally, the replacement of corn with chromium supplemented CH, PF, or CHPF diets did not affect all the hematological indices, which is another confirmation of the hypothesis that feeding CH and PF did not affect the health of cows (Ghoniem and Atia, 2020).…”

Screening for Pathogenic Genetic Variants of APOA1 and ABCG1 Genes Associated with Dyslipidemia in Type 2 Diabetic Patients

“…Nutritionally rich milk can be obtained by using oil seeds (Kennelly, 1996). High-energy diet like adding fat or oil to the diets of ruminants can help in covering the requirements of high energy for high milk yield (Ghoniem and Atia, 2020). Diet enriched with protein and having high energy can help to improve the performance of sheep.…”