Effect of Betaine Supplementation to Methionine Adequate Diet on Growth Performance, Carcass Characteristics, Some Blood Parameters and Economic Efficiency of Broilers

Abstract

The objective of this study was to evaluate the influence of supplementing betaine to broiler diets containing adequate concentration of methionine on growth performance, carcass traits and some blood parameters, as well as economic efficiency. Two hundred and sixty day-old Ross broiler chicks were allotted into five equal treatments of four equal replications. Five experimental isonitrogenous and isocaloric diets with graded levels of betaine (0.0, 1.0, 1.5, 2.0 and 2.5 g/kg diet) were formulated and fed to chicks from 1 to 39 days of age. During the entire experimental period, dietary betaine supplementation had positive effects on mortality rate, economic efficiency and growth performance (weight gain, feed conversion ratio, protein efficiency ratio, efficiency of energy utilization and performance index) of broiler chicks but feed intake was not affected. Broilers fed the betaine-supplemented diets exhibited significantly higher percentages of carcass yield, total edible parts, breast yield and breast meat while those of heart and abdominal fat were decreased but relative weights of giblets, liver and gizzard were not affected compared with their control counterparts. Feeding the betainesupplemented diets also produced a positive effect on liver and breast meat composition (increased crude protein and decreased ether extract contents of both) compared with the control group. Dietary supplementation with betaine led to significant increases in serum concentrations of total protein, globulin, triglycerides and total cholesterol but levels of glucose and albumin were not affected. Taking the economic aspect into account, it is concluded that supplemental betaine can be used to improve growth performance and carcass quality of broilers fed methionine adequate diets. Based on the present results, a supplemental dietary betaine level of 1.0 g/kg diet is suggested to be enough to exert such beneficial effects.

Broylerlerde Betain İlavesinin Performans, Karkas Verimi ve Bazı Kan Parametreleri Üzerine Etkisi

“…In consequence of the findings obtained at the end of the experiment, no statistically significant difference was found between the groups in terms of carcass parameters, and heart, liver, spleen, and gizzard weights in the control and experimental groups. The present study is similar to those by (El-Shinnawy 2015;Honarbakhsh et al, 2007;Uzunoğlu and Yalçın, 2019) reporting that betaine addition did not affect carcass yield and heart, liver, spleen, and gizzard weights.…”

Supplementary outcomes of betaine on economic and productive performance, some biochemical parameters, and lipoprotein lipase gene expression in finishing male broilers

“…Inconsistance to the present results, Bogusławska et al [34] observed increased plasma TG (18%) of betaine-fed pigs which could affect cholesterol metabolism, furthermore, Martins et al [35] reported significant increase ( P > .05) in blood serum concentrations of triglycerides in response to dietary betaine supplementation in broilers. Betaine might activate liver lipid mobilization and improve hepatic lipoprotein secretion as indicated by El-Shinnawy [36] which supported the strong positive significant correlation between TG and GLB obtained in G3. The trend of serum cholesterol observed in G3 was partially in agreement with Boguslawska et al [34] who reported that betaine supplementation can lead to higher serum cholesterol.…”

Effects of dietary supplementation of betaine and sepiolite supplementation on performance and intestinal health in broilers

“…Similar to the present results, some researchers reported that carcass yield (6,12,49) and the relative weights of liver (12,41,49), spleen (12,41,49), heart (49) and bursa of Fabricius (12,49) were not affected by dietary sepiolite. In some studies (4,8,11,13) carcass yield was increased by betaine supplementation. The improvement in carcass yield may be due to the osmotic effects of betaine that increases water retention (45).…”

“…Reduction in triglyceride could be correlated with betaine usage in shynthesis of carnithine and lecithin for fat immobilization. El-Shinnawy (11) showed that betaine supplementation increased serum cholesterol, protein and albumin. Some researchers (8,15) indicated that betaine supplementation improved the immunity of birds.…”