Impact of Methionine Sources on Performance in Turkeys

Hoehler, D.; Lemme, A.; Roberson, K. D.; Turner, K.

doi:10.1093/japr/14.2.296

Cited by 17 publications

(15 citation statements)

References 14 publications

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“…However, for all experiments the bioefficacy of liquid MHA‐FA relative to DL‐Met was determined on a product‐to‐product basis, not on an equimolar basis. Hoehler et al . (2005) demonstrated that similar, if not exactly the same, results can be obtained estimating bioefficacy with either comparison.…”

Section: Discussionmentioning

confidence: 99%

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Bioavailability of methionine hydroxy analog‐free acid relative to DL‐methionine in broilers

Payne¹,

Lemme²,

Seko³

et al. 2006

Animal Science Journal

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Three experiments were conducted to determine and validate the relative bioefficacy of the liquid form of hydroxy analog (liquid MHA-FA) to that of DL-methionine (Met) in male broilers. In experiments 1 and 2, 945 and 550 male broilers were fed either a Met-deficient basal diet, or the basal diet supplemented with four and five equimolar levels of each Met source, respectively. In experiment 3, 1232 male broilers were fed either a Met-deficient basal diet, or the basal diet with three levels (low, moderate, or high) of liquid MHA-FA or DL-Met at 65% of the liquid MHA-FA level. Growth performance improved in all trials, regardless of the Met source, relative to those broilers fed the basal diet. In experiments 1 and 2, the bioefficacy estimates for liquid MHA-FA relative to DL-Met on a product basis were: 50% and 64% for weight gain, 51% and 59% for the feed conversion ratio, and 54% and 48% for breast-meat yield, respectively. In experiment 3, there were no differences between the DL-Met or liquid MHA-FA treatments, and the broilers fed liquid MHA-FA were 68% as efficient on a product basis as those fed DL-methionine for weight gain. The results from these three trials indicate that the bioefficacy of liquid MHA-FA relative to DL-methionine is 57% on a product basis on average across all criteria tested.

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Section: Discussionmentioning

confidence: 99%

“…The bioefficacy of liquid MHA‐FA compared with DL‐Met was assessed using exponential regression on a product‐to‐product (weight/weight) basis. Hoehler et al . (2005) indicated that regression results were similar or exactly the same determined on equimolar or product basis.…”

Section: Methodsmentioning

confidence: 99%

Bioavailability of methionine hydroxy analog‐free acid relative to DL‐methionine in broilers

Payne¹,

Lemme²,

Seko³

et al. 2006

Animal Science Journal

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“…Waldroup and England (2002) demonstrated that the methionine content of diets higher than 0.52% had no beneficial influence on the body weights of 21-day old turkeys. On the other hand, Hoehler et al (2005) reported that turkeys fed supplemental methionine had higher body weights at 21 days of age than control birds fed a basal diet. Lemme et al (2005) also noted a positive effect of graded methionine levels on body weight gains in turkey toms.…”

Section: Discussionmentioning

confidence: 98%

Immunological and biochemical indicators in turkeys fed diets with a different Methionine content

Kubińska¹,

Tykałowski²,

Jankowski³

et al. 2014

Polish Journal of Veterinary Sciences

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The objective of this study was to determine the effect of different levels of dietary methionine on selected immune parameters of young turkeys. A total of 357 one-day-old female Hybrid Converter turkeys were randomly divided into three groups with low, medium and high level of dietary methionine (LM, MM, HM) of seven replicates each. Methionine was added to the basal diet (LM) at 0.16% (MM) and 0.32% (HM). At 17 days of age, seven birds per group were vaccinated against Ornithobacterium rhinotraheale (ORT) infection, with ORNITIN (ABIC) vaccine. At 28 days of age, blood was sampled and the birds were euthanized. The serum concentrations and activity of selected biochemical parameters, total IgY and IgM, and vaccine-induced antibody titers (IgY) against ORT were determined. The percentages of CD4 + , CD8 + , CD4 + /CD8 + T cell subpopulations and IgM

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“…There have already been many discussions concerning the relative bioavailability of methionine from different sources, as well as a considerable number of experiments comparing various sources, mainly DL-HMBA and DLM, conducted in birds (Esteve-Garcia and Llaurado, 1997;Hoehler et al, 2005a;Elwert et al, 2008). Furthermore, the correct statistical design to evaluate the bioavailability of different sources of essential nutrients has been under debate (Littell et al, 1997;Kratzer and Littell, 2006;Piepho, 2006).…”

Section: Introductionmentioning

confidence: 99%

Bioavailability of different methionine sources for broilers from 1 to 21 days old

et al. 2015

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. 2015. Bioavailability of different methionine sources for broilers from 1 to 21 days old. Cien. Inv. Agr. 42(1): 35-43. This trial aimed to evaluate the bioavailability of DL-2-hydroxy-4-(methyl) butanoic acid (DL-HMBA) and a poly-herbal ingredient (PHI) in relation to DL-methionine (DLM) on broilers. A sample of 1100 broiler chickens of the Cobb 500 strain, both male and female, were fed either a basal diet without industrial methionine supplementation or a basal diet that was supplemented with three DL-HMBA levels (0.170, 0.340, and 0.511%) or three DLM levels (0.111, 0.221, and 0.332%) in an amount equivalent to 65% of the respective DL-HMBA levels (on a product weight basis) and three levels of PHI (0.111, 0.221, and 0.332%) in amounts equivalent to the used DLM levels from 1 to 21 days of age. The simultaneous linear regression analysis (slope ratio) revealed a relative bioavailability of DL-HMBA of 39% compared to that of DLM for weight gain and 44% for feed conversion. However, the performance data from birds that were supplemented with PHI did not significantly adjust to simultaneous regression designs; therefore, it was not possible to determine the PHI bioavailability in relation to the DLM. Considering together all of the studied parameters, the relative bioavailability of DL-HMBA was 42% compared to the DLM on a product basis.

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Impact of Methionine Sources on Performance in Turkeys

Cited by 17 publications

References 14 publications

Bioavailability of methionine hydroxy analog‐free acid relative to DL‐methionine in broilers

Bioavailability of methionine hydroxy analog‐free acid relative to DL‐methionine in broilers

Immunological and biochemical indicators in turkeys fed diets with a different Methionine content

Bioavailability of different methionine sources for broilers from 1 to 21 days old

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