Barley Rations for Swine. II. The Influence of L-Lysine and DL-Methionine Supplementation of Barley-Soybean Meal Diets upon Rate and Efficiency of Gain and upon Nitrogen Retention of Growing Swine

Soldevila, Manuel; Meade, R. J.

doi:10.2527/jas1964.232397x

Cited by 13 publications

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“…At the 22 % protein level a significant relationship was found only for the growth interval between 8 and 13-6 kg. Several authors have also reported no significant responses to graded additions of methionine to different dietary mixtures (Meade, 1956;Acker, Catron and Hays, 1959;Soldevila and Meade, 1964;Stockland, Meade and Nordstrom, 1971). The relationship at the 20% protein level for the 8 to 50 kg growth phase was only significant.…”

Section: Regression and Correlation Analyses Of Some Performance And mentioning

confidence: 99%

Protein levels in diets for European pigs in the tropics. 1. The effect of methionine supplementation on the protein requirement of growing pigs

1975

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One hundred and twenty-eight Landrace and Large White pigs were allocated on the basis of sex, litter origin and initial weight to one of 16 treatments, made up of four basal 16, 18, 20 and 22% protein diets, each supplemented with either 0-00, 0-10, 0-15 or 0-20 % synthetic DL-methionine, at a common digestible energy level of 3740 kcal/kg. Pigs were reared between 8 and 50 kg live weight. Growth rate of pigs and efficiency of feed conversion were significantly improved as the protein levels were increased up to the 20 % protein level, optimal performance being on the 20 % protein diet, with added 0-15% methionine, giving a total methio-nine+cystine level of 0-65% and a lysine level of 1-07%. Addition of synthetic methionine to the diets resulted in significant improvement in the rate and efficiency of gain only at the 16 and 18% protein levels. Carcass leanness and fatness increased and decreased respectively over the whole range of protein levels. Graded addition of DLmethionine within each protein level did not influence carcass characteristics. Nitrogen retention showed optimal utilization of dietary nitrogen to be at the 18% protein level, with a total dietary methionine + cystine level of 0-61 %, which was at variance with the levels indicated by both growth and feed efficiency.

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Section: Regression and Correlation Analyses Of Some Performance And mentioning

confidence: 99%

Protein levels in diets for European pigs in the tropics. 1. The effect of methionine supplementation on the protein requirement of growing pigs

1975

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“…Lysine supplementation has been shown to increase nitrogen digesti¬ bility (Jones, Hepburn, and Boyne, 1961;Long et al, 1962) and nitrogen retention (Jones et al, 1961;Soldevila and Meade, 1964;and Robinson, 1965) . Meade (1956) and Meade and Teter (1956) reported that supplemental lysine did not affect nitrogen retention of growing pigs, while Long et al (1962) reported decreased nitrogen retention due to lysine supplementation of baby pig rations.…”

Section: Effect Of Amino Acid Supplementation On Nitrogen Balancementioning

confidence: 99%

“…Methionine was found to have no effect on nitrogen digestibility or retention when added to barley-soybean meal rations for growing pigs (Soldevila and Meade, 1964;Meade et al, 1965). Jones et al (1961) reported that nitrogen retention, expressed as a percentage of dietary nitrogen, was depressed by the addition of methionine to 18%protein diets composed of barley and groundnut meal.…”

Section: Effect Of Amino Acid Supplementation On Nitrogen Balancementioning

confidence: 99%

Energy, protein, and amino acid levels in the rations of weanling pigs /

Standish¹

1966

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Experiments were designed to study fat, lysine, and methionine additions to rations containing three levels of crude protein for weanling pigs from 3 to 9 weeks of age.The experiments were 3 x 5 x 2 x 2 factor¬ ials in which the factors were fat level, protein treatment, breed group, and sex. The levels of supplemental fat were 0, 4, and 8 per cent. The five protein treatments were based on rations containing 12, 16, or 20% protein and 12 or 16% protein supplemented with lysine and methionine so that the level of these amino acids was calculated to be the same as in the 20%,-protein ration. The two breed groups were Lacombe x Yorkshireand Hampshire x Lacombe-Yorkshire .Increasing protein from 12 to 16% resulted in doubling the rate of gain (from 0.11 to 0.22 kg/day) while increasing protein from 16 to 20%, resulted in a smaller but significant increase (from 0.22 to 0.28 kg/day).Increasing the lysine and methionine in the 12 and 16%, rations resulted in a 27 and 36% increase in rate of gain, respectively. Average daily feed intake was increased when the protein level was increased from 12 to 16%,, but the increase in feed consumption was not significant when protein was raised from 16 to 20 per cent. Supplemental lysine and methionine added to the 12 and 16%,-protein rations resulted in a 13%, increase in daily feed intake. Efficiency of feed utilization was improved (P <0.05) as protein was increased from 12 to 16%, (2.97 and 2.14 kg feed/kg gain, respectively) and supplementing these rations with lysine and methionine resulted in a further improvement of 15 and 17%, in the efficiency of feed utilization.Apparent digestible energy for 6-week-old pigs was not significantly influenced by any of the treatment factors. Apparent nitrogen digestibility and nitrogen retention were significantly (P

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Grain and Grain By-product Energy Sources

Maner¹

1984

Swine Production and Nutrition

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Barley Rations for Swine. II. The Influence of L-Lysine and DL-Methionine Supplementation of Barley-Soybean Meal Diets upon Rate and Efficiency of Gain and upon Nitrogen Retention of Growing Swine

Cited by 13 publications

References 0 publications

Protein levels in diets for European pigs in the tropics. 1. The effect of methionine supplementation on the protein requirement of growing pigs

Protein levels in diets for European pigs in the tropics. 1. The effect of methionine supplementation on the protein requirement of growing pigs

Energy, protein, and amino acid levels in the rations of weanling pigs /

Grain and Grain By-product Energy Sources

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