Milk Fatty Acid Composition and Conjugated Linoleic Acid (CLA) Content in Dairy Ewe’s Milk in Relation to the Nature of Food Supplements
Journal Title: Journal of Animal Science Advances - Year 2011, Vol 1, Issue 2
Abstract
Milk fatty acid composition was determined in Sicilo – Sarde dairy ewes supplemented with two concentrates made of varied raw materials. Twenty Sicilo-Sarde ewes were divided into two homogeneous groups (after analysis by Bartlett test of homogeneity) according to age (5.3 ± 1.25 years and 5.7 ± 1.15 years), litter size (1.1 ± 0.31), the number of lactation (4.3 ± 1.25 and 4.6 ± 0.96), and weight (33.83 ± 5.63 and 33.95 ± 5.58 kg). Ewes were housed in two identical boxes with an area of 10.14 m[sup]2[/sup] each (1.01 m[sup]2[/sup]/ewe). Both groups of ewes were offered a common base ration of oat hay (1.5 kg DM / ewe ). They were supplemented with one of two concentrates at the rate of 500 g /ewe/ day . The first concentrate (CC) was a standard concentrate made of corn, barley, wheat bran, soybean and a mineral supplement and vitamins for sheep. The second concentrate (CS) included local white sorghum, horse beans and the same mineral and vitamins supplement. Milk samples (1 sample /group of ewes/ week) during the first ten weeks of the study, were collected for analysis of total fat and fatty acids by gas chromatography. The fat content was 72.1 ± 4.1 and 75.8 ± 6 g / kg for the control group (CC) and experimental group(CS), respectively. The main fatty acid was palmitic acid C16 (27.75 ± 1.29% vs. 27.77 ± 1.21% of total fatty acids for the CS and CC diets, respectively) and miristic acid C14 (12.06 ± 0.82% and 12.47 ± 1.21% for CC and CS, respectively). Capric acid (C10) had an intermediate concentration. It was comparable (p> 0.05) in both concentrates (7.17 ± 1.17) in the control group (CC) and 7.38 ± 1.39 % in the experimental group (CS). The concentration of conjugated linoleic acid (CLA) was 0.48 ± 0.03 for the CC and 0.36 ± 0.09% for the CS ewe groups, respectively. Total fatty acids were comparable (p> 0.05) for both ewe groups.
Authors and Affiliations
H. Selmi , M. Kammoun , G. Tibaoui , B. Rekik
Keywords
Related Articles
- EP ID EP113864
- DOI -
- Views 147
- Downloads 0
Genetic Correlations of some Traits of the Heavy Ecotype of Nigerian Native Chicken
Numerous researches have been done and documented on the genetic associations among many traits in the exotic broiler and layer breeds, however there seem to be no single reference documented literature on the collective...
Breeding Management Program of Iranian Holstein Farms in Tehran Province
Dairy industry plays an important role in the national economy and in the socio-economic development of Iran. Considering the importance of breeding programs by dairy farmers, a study was conducted at Tehran Province of...
Prevalence of Endoparasites of Horses in Jos North and Jos South Local Government Areas of Plateau State Nigeria
Parasitism is the most common and economically devastating disease of horses. The study was therefore conducted to determine the prevalence of endoparasites of horses in Jos metropolis. Blood and fecal samples were colle...
Lethal Influence of Zinc Exposure to Clarias gariepinus (Burchell, 1822, Pisces, Clariidae)
Acute toxicity of zinc (ZnSO4.7H2O) on Clarias gariepinus (Burchell, 1822) was investigated using toxicity scale of 96hrLC50 values and the quantal response determined by the statistical Probit Analysis Method. Fish spec...
Evaluation of Processed Soybean Meal in the Feeding of Clarias Gariepinus Fingerlings
Seven isonitrogenous and isocaloric diets were formulated to provide 40% crude protein. Diet I served as control diet formulated with 100% fishmeal, in diets II, III, IV, V, VI and VII, fish meal was replaced with proces...