Effects of dietary soybean and sunflower oils with and without L-carnitine supplementation on growth performance and blood biochemical parameters of broiler chicks

Abstract

Abstract. An experiment was designed to investigate the effects of soybean, sunflower oil and dietary Lcarnitine supplementation on growth performance, some blood biochemical parameters and antibody titer against Newcastle disease of broiler chicks. A 5-week feeding trial, 240 1-day old male broiler chicks (Ross 308) were randomly allocated to six dietary treatments as a 3 × 2 factorial experimental design where three sources of dietary oil contained soybean, sunflower and soybean plus sunflower oil with and without 120 mg kg −1 of Lcarnitine supplementation in the diet. Results showed that soybean oil with L-carnitine significantly improved body weight gain and feed conversion ratio of broiler chicks in the grower and total period of rearing (p < 0.05). L-carnitine supplementation significantly increased total protein, globulin, cholesterol, HDL and LDL (high-and low-density lipoprotein) of blood serum in broiler chicks (p < 0.05). L-carnitine supplementation increased antibody titer against Newcastle disease of chicks and the highest levels were observed in those with the supplement of L-carnitine in the soybean oil dietary treatment. Results of this experiment showed that the growth performance and blood biochemical responses of broiler chicks to dietary supplementation with L-carnitine in dietary oil source and soybean oil, in comparison to sunflower oil, is the better plant oil for growth and immunological performance of broiler chicks.

Productive Performance of Rabbits Fed on Diets Supplemented With Sunflower Oil

“…Bodyyyyyy weight gain of broiler chickens were significantly reduced by dietary conjugated linoleic acid (Szymczyk et al, 2001, Zduńczyk et al, 2001Shahriar et al, 2007). Sunflower oil has the higher percentage of linoleic acid (C18 : 2, ω-6), as omega 6 fatty acids and therefore this plant oil has the lower ω-3 to ω-6 fatty acid ratio in comparison to soybean oils (Jalali et al, 2015). Also, Fernandez-Carmona et al (1998) reported that increasing the level of dietary fat did not increase average daily gain.…”

Effect of Different Dietary Sources of Oils on Growth Performance and Profile of Lipid, Testosterone and Fatty Acids in Rabbit Bucks.

“…Sunflower oil has the higher percentage of linoleic acid (C18: 2, n-6), as n-6 fatty acids. This plant oil has the lower n-3 to n-6 fatty acid ratio in comparison to soybean oils (Jalali et al, 2015). The recorded improved ADG might be due to the presence of poly-unsaturated fatty acids (PUFA) in vegetable oils (El-Sayed et al, 2013).…”

Enrichment of Poultry Diets with Polyunsaturated Fatty Acids (PUFA) for Human Consumption

“…This effect is highly associated with down-regulation or up-regulation of different cytokines that are believed to affect the avian immune function such as IL-1β, IFN-γ, MGF, IL-1, IL-4, IL-2 [13,14].…”