Effect of L-carnitine supplementation on growth performance, nutrient utilization, and nitrogen balance of broilers fed with animal fat

Murali, P.V.; George, Samuel D.; Ally, K.; Dipu, M. T.

doi:10.14202/vetworld.2015.482-486

Cited by 20 publications

(17 citation statements)

References 14 publications

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“…This may be due to ducklings are able to compensate their feed intake according to their energy requirements as well as the experimental diet had similar metabolizable energy. This result is similar with Murali et al (2015) who reported that dietary LC addition (900 mg/kg diet) did not affect feed consumption in broilers during growing period (0-6 wks). Also, Awad et al (2016) reported that FC for Domyati ducklings was not significantly affected due to LC supplementation with 150up to 600 mg/kg diet.…”

Section: Resultssupporting

confidence: 92%

Effect of Sex and L-Carnitine Addition on Growth Performance and Carcass Quality of Sudani Ducklings

Awad

Fahim

Beshara

et al. 2017

EPSJ

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Two hundred and eighty eight of Sudani ducklings (144 from both males and females), 4-wks-old were used, weighed and divided into six experimental groups (three replicates each) for both sexes to investigate the effect of ducklings sex and dietary L-carnitine (LC) addition(0, 150, 300, 450, 600 and 750 mg/kg diet) in a factorial design (2 × 6) on growth performance, carcass traits and quality and blood constituents as well as economic efficiency under Egyptian summer conditions. Results indicated that, live body weight (LBW), body weight gain (BWG), feed consumption (FC) and production index (PI) were significantly (P≤0.01) higher for male ducklings than female, also, feed conversion ratio (FCR) was significantly (P≤0.05) improved during the whole experimental period (4-16 wks of age). However, dietary LC addition resulted in a significant (P≤0.01) improvement in BWG, FCR and PI during the experimental period than the control group. Abdominal fat and breast and thigh yield (%) were significantly higher for female than male ducklings. Eviscerated carcass and total edible parts (%) were significantly (P≤0.01) improved by supplementing different LC levels to the diet, while abdominal fat was significantly (P≤0.01) decreased. Breast yield (%) was significantly (P≤0.05) higher by feeding 450 mg LC/kg diet, only than the control, however, thigh yield (%) was significantly(P≤0.01) improved by feeding different LC levels except of 300 mg/kg. Furthermore, muscles ether extract (EE) content was significantly higher in both breast and thigh of female's ducklings than males, while crude protein (CP) was significantly decreased for female thigh muscles. Addition different LC levels to the diet resulted in a significant improvement of CP content for both breast and thigh muscles, while EE content was significantly decreased for them. Serum total cholesterol was significantly increased for female than male ducklings, whereas, both serum triglycerides and total cholesterol constituents were significantly decreased by supplementing different LC levels to the diet than the control. Supplementing different LC levels to the diet resulted in a significant increase in lymphocytes (L) cells (%), while heterophils (H) cells (%) and H/L ratio were significantly (P≤0.01) decreased than the control group. Net return and economic efficiency were significantly lowered for female ducklings than male, however, they significantly improved for ducklings fed different LC diets than those fed the control diet. These results indicated that dietary L-carnitine additionwith150 or 300 mg/kg could be maximize and improve the growth performance and carcass traits and quality as well as economic efficiency of Sudani ducklings especially males during growth period (4-16 wks of age) under Egyptian summer conditions.

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Section: Resultssupporting

confidence: 92%

Effect of Sex and L-Carnitine Addition on Growth Performance and Carcass Quality of Sudani Ducklings

Awad

Fahim

Beshara

et al. 2017

EPSJ

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“…A decreased level of glucose in the blood of broilers with the introduction of tannic acid into the diet was observed in earlier studies [ 32 ], as well as triglycerides on feeding an essential oil mix obtained from plants [ 33 ]. It is known that triglycerides are important energy products, especially those used by chickens for growth [ 34 , 35 ]. In addition, a recent study [ 36 ] found that bifidobacteria inhibit fat accumulation, improve insulin resistance, and reduce blood glucose levels in the blood of laboratory animals.…”

Section: Resultsmentioning

confidence: 99%

Effect of the combined action of Quercus cortex extract and probiotic substances on the immunity and productivity of broiler chickens

et al. 2018

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Aim:This study was designed to investigate the synergistic effect of the combined action of probiotic bacterial strains (Bifidobacterium adolescentis and Lactobacillus acidophilus) and Quercus cortex extract as biologically active substances in the feed on the immunity and productivity of Gallus gallus domesticus.Materials and Methods:For the experiment, 120 7-day-old broiler chickens were selected (4 groups, n=30, 3 replicates with 10 birds in each group). The groups were as follows: The reference group - basic diet (BD); experimental Group I - BD + Q. cortex extract (Q. cortex), 2.5 ml/kg of body weight; experimental Group II - BD + probiotic preparation based on B. adolescentis, 80.0 million colony-forming units (CFU), and L. acidophilus, 1.0 million CFU (dosage in accordance with the recommendations of the manufacturer); and experimental Group III - BD + probiotic + extract of Q. cortex. The following methods of study were used: Chemiluminescence and biochemical and hematological analysis.Results:The results of the experiment showed a slight decrease in the level of leukocytes in Groups II (p≤0.05) and III, and of hemoglobin in Group III (p≤0.05), compared to the reference group. The level of alanine aminotransferase and aspartate aminotransferase in Group II was higher than both the reference group (p≤0.05) and the other groups. Introduction of Q. cortex extract into the diet increased the level of triglycerides (p≤0.05) and urea in the blood serum. The combined use of probiotic preparations and the extract resulted in an increase in the level of iron in the blood serum by 78.1% (p≤0.05) in Group III. An increase in indicators of the antioxidant system (catalase increased in Group I by 27.2% (p≤0.05) and by 3.0–12.7% in other groups; superoxide dismutase increased by 3.0–13.2%) and nonspecific immunity (β-lysine increased by 8.8–16.0%) was noted. Introduction of the extract and probiotic preparation into the diet contributed to increasing the live weight of chickens at the age of 15 days by 5.9 and 7.4%, respectively (p≤0.05). In experimental Group II, this trend continued, and by the end of the period, the weight of animals exceeded that of their peers in other groups by 0.7-7.0%. Given the high preservation rate of poultry in the II and III Groups, and the low feed consumption per 1 kg of live weight gain (by 3.1–6.7%), the efficiency of growth was higher than in the reference group.Conclusion:Thus, the combined use of probiotic strains of bacteria and Q. cortex extract helped to increase the antioxidant activity of the organism and antimicrobial components of blood plasma compared with broiler chickens with similar growth rates but without the supplementation of this combination.

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“…Also, Takahashi, Kitano, and Akiba () did not observe an effect of supplemental L‐carnitine (experiment 1: 0, 100 and 3,000 mg/kg diet; experiment 2: 0 and 100 mg/kg diet) fed for 24 days on BW gain, feed intake and gain‐to‐feed ratio in Ross broiler chickens (experiment 1: n = 48; experiment 2: n = 40), whereas the authors could demonstrate that supplemental L‐carnitine enhances concanavalin A‐stimulated splenic mononuclear cell proliferation in broiler chickens. Finally, Murali, George, Ally, and Dipu (), which evaluated the effect of a high dietary L‐carnitine concentration (900 mg/kg diet) on performance of mixed‐sex Vencobb broiler chickens ( n = 80) in a 6‐week feeding trial and on nutrient utilization and nitrogen balance in a subsequent metabolism trial of 3‐day duration, found no effect of supplemental L‐carnitine on BW, feed consumption and gain‐to‐feed ratio in the starter, finisher and whole period. In addition, nutrient utilization and nitrogen balance estimated from the metabolism trial did not indicate any effect of supplemental L‐carnitine.…”

Section: Efficacy Of L‐carnitine Supplementation On Performance Of Momentioning

confidence: 99%

Basic mechanisms of the regulation of L‐carnitine status in monogastrics and efficacy of L‐carnitine as a feed additive in pigs and poultry

Ringseis

Keller

Eder

2018

Animal Physiology Nutrition

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A great number of studies have investigated the potential of L-carnitine as feed additive to improve performance of different monogastric and ruminant livestock species, with, however, discrepant outcomes. In order to understand the reasons for these discrepant outcomes, it is important to consider the determinants of L-carnitine status and how L-carnitine status is regulated in the animal's body. While it is a long-known fact that L-carnitine is endogenously biosynthesized in certain tissues, it was only recently recognized that critical determinants of L-carnitine status, such as intestinal L-carnitine absorption, tissue L-carnitine uptake, endogenous L-carnitine synthesis and renal L-carnitine reabsorption, are regulated by specific nutrient sensing nuclear receptors. This review aims to give a more in-depth understanding of the basic mechanisms of the regulation of L-carnitine status in monogastrics taking into account the most recent evidence on nutrient sensing nuclear receptors and evaluates the efficacy of L-carnitine as feed additive in monogastric livestock by providing an up-to-date overview about studies with L-carnitine supplementation in pigs and poultry.

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Effect of L-carnitine supplementation on growth performance, nutrient utilization, and nitrogen balance of broilers fed with animal fat

Cited by 20 publications

References 14 publications

Effect of Sex and L-Carnitine Addition on Growth Performance and Carcass Quality of Sudani Ducklings

Effect of Sex and L-Carnitine Addition on Growth Performance and Carcass Quality of Sudani Ducklings

Effect of the combined action of Quercus cortex extract and probiotic substances on the immunity and productivity of broiler chickens

Basic mechanisms of the regulation of L‐carnitine status in monogastrics and efficacy of L‐carnitine as a feed additive in pigs and poultry

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