Open Journal of Animal Sciences

Volume 8, Issue 1 (January 2018)

ISSN Print: 2161-7597   ISSN Online: 2161-7627

Google-based Impact Factor: 1.39  Citations  h5-index & Ranking

Tolerance Study for Standardized Macleaya cordata Extract Added to Chicken Layer Diet

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DOI: 10.4236/ojas.2018.81008    1,259 Downloads   2,033 Views  Citations

ABSTRACT

The objective of this study was to assess the effects of Sangrovit®, a standardized preparation of Macleaya cordata extract (MCE), on the health status and egg laying parameters of layer chickens. Layer chickens (N = 360) were randomly divided into four groups (90 birds/treatment, 10 birds/pen) and fed either a standard basal feed (T1) or a basal diet that was supplemented with 100 mg/kg (T2), 500 mg/kg (T3) or 1000 mg/kg (T4) Sangrovit® (providing 0, 3.7, 18.5, and 37.0 mg MCE/kg feed, respectively) for 56 consecutive days. Live Weight (LW), Average Daily Feed Intake (ADFI) and the Feed Conversion Ratios (FCR) were calculated during the study, and biochemical and hematological endpoints were obtained at the end of the study (Day 56). Eggs were analyzed for the isoquinoline alkaloids sanguinarine and chelerythrine. No statistically significant (P > 0.05) differences were found between control and treatment groups for LW, ADFI and FCR. There was a significant increase in the % laying in groups T3 and T4 for the study overall, but no significant differences in egg size during the study. Blood biochemical analyses showed a near-significant trend for decreased bilirubin in the T2 and T4 groups, but this was not dose-dependent and not considered treatment-related. The percent hemoglobin was significantly decreased in the high dose group, but was not considered treatment-related as it was not a dose-dependent effect. No treatment-related changes were found after necropsy of the selected organs. No quantifiable sanguinarine or chelerythrine was found in the eggs after 56 days administration of the MCE preparation to the hens. The results of this study show that consumption of a standardized MCE preparation at up to 1000 mg/kg feed in laying hens had no adverse effect on the hen or eggs, and no residual sanguinarine or chelerythrine was transferred to the eggs.

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Matulka, R. , von Alvensleben, S. , Morlacchini, M. and Fusconi, G. (2018) Tolerance Study for Standardized Macleaya cordata Extract Added to Chicken Layer Diet. Open Journal of Animal Sciences, 8, 104-117. doi: 10.4236/ojas.2018.81008.

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