Methionine and cystine requirements of slow- and fast-feathering male broilers from zero to three weeks of age

Kalinowski, A; Moran, E. T.; Wyatt, C.L.

doi:10.1093/ps/82.9.1423

Cited by 30 publications

(15 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Baker et al [18], Kalinowski et al [46] and Baker [60], a series of factors may overlay evaluating of the ideal ratios between these AAs. Especially, the applied experimental approach must be taken into account.…”

Section: Discussionmentioning

confidence: 99%

An Elevated Dietary Cysteine to Methionine Ratio Does Not Impact on Dietary Methionine Efficiency and the Derived Optimal Methionine to Lysine Ratio in Diets for Meat Type Chicken

Kahn¹,

Wecke²,

Liebert³

2015

OJAS

View full text Add to dashboard Cite

Optimal dietary methionine (Met) to lysine (Lys) ratio in presence of elevated dietary cysteine (Cys) levels was derived for meat type growing chicken. Twelve averaged weighed Ross 308 birds (each 50% of male and female per dietary treatment) were utilized in N balance trials. During starter (d10 -20) and grower period (d25 -35) five dietary treatments were used. Diets based on uniform mixtures of maize, wheat, soybean meal, potato protein and fish meal were supplemented with crystalline amino acids (AA). In diets 1 -3, the dietary Cys to Met ratio was set as 85, 95 and 105 to 100, respectively. Diet 4, at a Cys to Met ratio of 105 to 100, was additionally supplemented with betaine (BET) as methyl group donor. Diets 1 -4 were limiting in Met, diet 5 without L-Lys•HCl addition was limiting in Lys. Individual N-balance data per treatment were utilized for assessing protein quality and efficiency of dietary Met (Diets 1 -4) or Lys (Diet 5) based on "Goettingen approach". Elevated dietary Cys supply and supplemented BET failed to improve both dietary protein quality and Met efficiency. The established optimal Met to Lys ratio was on average 34 to 100 for growing chicken during starter and grower period, respectively.

show abstract

Section: Discussionmentioning

confidence: 99%

An Elevated Dietary Cysteine to Methionine Ratio Does Not Impact on Dietary Methionine Efficiency and the Derived Optimal Methionine to Lysine Ratio in Diets for Meat Type Chicken

Kahn¹,

Wecke²,

Liebert³

2015

OJAS

View full text Add to dashboard Cite

show abstract

“…Kalinowski et al [52,53] reported total TSAA requirements for slow-and fast-feathering broilers in starter phase (1 to 21 d) for slow-and fast-feathering broilers as 0.89 and 0.94%, respectively, and TSAA requirements during the grower phase (21 to 42 d) as 0.83 and 0.88%, respectively. Baker et al [54] determined a total TSAA requirement as 0.73% for 21-to 42-d-old broilers.…”

Section: Regression Analysesmentioning

confidence: 99%

“…Baker et al [54] determined a total TSAA requirement as 0.73% for 21-to 42-d-old broilers. The TSAA requirement reported by Kalinowski et al [53] and Baker et al [54] varied considerably. The research design to estimate the TSAA requirements differed between Baker et al [54] and Kalinowski et al [53], which have produced conflicting results.…”

Section: Regression Analysesmentioning

confidence: 99%

Dietary Amino Acid Responses of Broiler Chickens

Dozier

Kidd

Corzo

2008

Journal of Applied Poultry Research

110

View full text Add to dashboard Cite

In commercial practice, formulating diets to adequate amino acid (AA) minimums is critical to optimize live production and meat yield of broiler chickens. The modern broiler has lower feed intake per unit BW gain and also has the potential to accrete more white meat than the commercial broiler of previous decades. Broilers consuming less feed per unit of gain have led to formulating higher AA density diets in commercial production for improved performance and meat yield. This manuscript reviews current literature in dietary AA density. In addition, it provides estimates of consumption and dietary percentages of critical AA needed to optimize growth and meat yield calculated from published research.

show abstract

“…The growth and development of breast muscle is more sensitive to nutrition than management factors. It has been well documented that dietary levels of lysine (Lys) (Hickling et al, 1990;Kidd et al, 1997;Kerr et al, 1999), methionine (Met) (Hickling et al, 1990;Kalinowski et al, 2003) and threonine (Thr) (Kidd et al, 1997 and2004) greatly influence the breast meat yield. Among muscle tissues, the breast muscle seems to be most sensitive to Lys deficiency in young chicks and this deficiency may increase the fractional rate of proteolysis in this muscle than in the liver (Tesseraud et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Growth responses of breast and leg muscles to essential amino acids in broiler chicks

Mehri

Kasmani

Rokouei

2016

Animal

View full text Add to dashboard Cite

The first three essential amino acids (EAA) for broilers including methionine (Met), lysine (Lys) and threonine (Thr) may greatly influence the growth of chick muscles at early stages of life. In order to survey the potential effects of those EAA on growth muscles, a rotatable three-variable central composite design (CCD) was conducted to track the interrelationships of dietary digestible Met (dMet), Lys (dLys) and Thr (dThr) for optimization of processing yields in broiler chicks using response surface methodology. A total of 60 floor pens of six birds each were assigned to 15 dietary treatments based on CCD containing five levels of dMet (0.416% to 0.584% of diet), dLys (0.881% to 1.319% of diet) and dThr (0.532% to 0.868% of diet) from 3 to 16 days of age. Experimental treatments significantly affected breast mass (BM) and leg mass (LM) of the birds ( P < 0.05) in which the main effect of dLys on BM was threefold higher than the main effect of dThr, and interaction effect between dMet and dLys was observed on BM ( P < 0.05). However, in the case of LM, the main effect of dThr was higher than the main effects of dMet and dLys and highest interaction effect exist between dThr and dMet ( P < 0.05). The second-order models for BM and LM were fitted by least squares regression. Canonical analysis revealed that the stationary points for carcass components were saddle points, thus ridge analysis was performed for getting optimal values of each EAA. Ridge analyses of BM and LM models showed that the maximum BM point may be obtained with 0.58%, 1.05% and 0.76% of dMet, dLys and dThr, respectively, in diet, and maximum LM point may be achieved with 0.58%, 1.09% and 0.70% of dMet, dLys and dThr, respectively, in diet. The resultant ideal ratios of dMet and dThr to dLys were 55% and 72% for BM; 53% and 64% for LM. Moreover, sensitivity analysis showed that the most important amino acids in BM and LM models were Lys and Thr, respectively. In conclusion, providing these three amino acid for BM optimization may warrant LM optimization and higher ideal ratios of dMet and dThr for breast muscle may indicate the higher importance of these EAA in this muscle than those in thigh muscle.

show abstract

Methionine and cystine requirements of slow- and fast-feathering male broilers from zero to three weeks of age

Cited by 30 publications

References 20 publications

An Elevated Dietary Cysteine to Methionine Ratio Does Not Impact on Dietary Methionine Efficiency and the Derived Optimal Methionine to Lysine Ratio in Diets for Meat Type Chicken

An Elevated Dietary Cysteine to Methionine Ratio Does Not Impact on Dietary Methionine Efficiency and the Derived Optimal Methionine to Lysine Ratio in Diets for Meat Type Chicken

Dietary Amino Acid Responses of Broiler Chickens

Growth responses of breast and leg muscles to essential amino acids in broiler chicks

Contact Info

Product

Resources

About