scholarly journals 120 Awardee Talk: Amino acid and energy requirements of high producing sows

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 109-110
Author(s):  
Robert Goodband ◽  
Mariana Menegat ◽  
Kiah Gourley ◽  
Lori Thomas ◽  
Mike Tokach ◽  
...  
Keyword(s):  
Amino Acid ◽  
Continuous Improvement ◽  
Genetic Selection ◽  
Nutrient Requirements ◽  
Protein Deposition ◽  
The Past ◽  
Major Benefit ◽  
Feed Management ◽  
Amino Acid Intake ◽  
Ad Libitum

Abstract Improvements in genetic selection, nutrition, health, and management has led to continuous improvement in sow productivity over the past 10 to 20 years. Today’s sows are more prolific with greater number of pigs gestated, nursed, and weaned per litter than in the past. Modern genotype females are also faster growing and leaner than predecessors. These changes in reproductive performance and body composition alter nutrient requirements during gestation and lactation. Gestation nutrient requirements appear to be met with approximately 11 to 12 g/d of standardized ileal digestible (SID) lysine and 5,000 to 6,000 Kcal/d NE. Providing greater lysine intake increases protein deposition and sow weight gain and may reduce stillbirth rate; however, the magnitude of economic benefit provides marginal economic response. Increasing energy and amino acid intake the last 3 to 4 days pre-farrowing appears to be a better alternative to shorten farrowing duration, increase the number of pigs born alive, and their weaning weights, than providing extra feed from d 90 of gestation through farrowing. During lactation, the goal is still to increase feed intake to minimize sow weight loss. Lysine requirement estimates in lactation seem to vary from study to study possibly reflecting the degree of sow muscle and fat catabolism. A summary of several lactation studies predicts a daily lactation requirement of 27 g SID Lys from the diet with an additional 13 g mobilized from body tissue for each 1 kg of litter growth. From a feed management standpoint, the availability of equipment to provide ad libitum consumption has been a major benefit in lactation. In conclusion, the literature suggests there are many successful ways to feed sows in gestation, peri-partum, and lactation, indicating that today’s sows are extremely resilient to nutritional challenges.

The effect of reducing energy intake through feed intake restriction on the performance of weaned barrows when amino acid intake declines either in direct proportion to energy or at a reduced rate

2006 ◽  
Vol 86 (2) ◽  
pp. 273-277 ◽  
Author(s):  
T. F. Oresanya ◽  
A. D. Beaulieu ◽  
J. F. Patience
Keyword(s):  
Amino Acid ◽  
Energy Intake ◽  
Feed Intake ◽  
Feed Restriction ◽  
Direct Proportion ◽  
Feed Conversion ◽  
Acid Intake ◽  
Amino Acid Intake ◽  
Ad Libitum ◽  
Reduced Rate

Amino acid intake declined either in constant proportion to energy or at a reduced rate when feed intake treatments represented 100, 70, 60 or 50% of ad libitum. Amino acid intake affected feed conversion, and energy and lysine utilization (P < 0.05). Energy studies involving feed restriction may be confounded by amino acid supply. Key words: Pigs, energy intake, amino acid intake

scholarly journals Estimating Amino Acid Requirements in Real-Time for Precision-Fed Pigs: The Challenge of Variability among Individuals

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3354
Author(s):  
Aline Remus ◽  
Luciano Hauschild ◽  
Marie-Pierre Létourneau-Montminy ◽  
Candido Pomar
Keyword(s):  
Cluster Analysis ◽  
Amino Acid ◽  
Interindividual Variability ◽  
Growing Pigs ◽  
Future Research ◽  
Nutrient Efficiency ◽  
Protein Deposition ◽  
Amino Acid Requirements ◽  
Amino Acid Intake ◽  
Similar Amino Acid

This study aimed to measure protein deposition (PD) in pigs fed with daily tailored diets where either dietary lysine (Lys) or threonine (Thr) were provided at independent levels (ignoring an ideal ratio). A total of 95 growing pigs (35 kg body weight (BW)) with electronic ear tags granting them access to automatic feeders were randomly assigned to treatments. The setup was an unbalanced 2 × 5 factorial arrangement with Lys and Thr provided at five levels (i.e., 60%, 80%, 100%, 120%, and 140% of the estimated individual requirements of Lys and Thr), resulting in 25 treatments for 21 days. The observed PD variation to Lys and Thr provisions was large, with Lys and Thr intake explaining only 11% of the variation. Cluster analysis discriminated pigs with low (167 g/d, n = 16), medium (191 g/d, n = 38), and high (213 g/d, n = 37) PD, but with a similar amino acid intake. Differences in PD were associated with differences in nutrient efficiency of utilization. Providing Lys and Thr in a factorial mode, ignoring an ideal ratio, did not decrease the variability in PD. Future research efforts should focus on identifying and investigating the sources of interindividual variability—a necessary step before final recommendations can be made for AA in precision-fed pigs.

The effect of microbial phytase and feed restriction on protein, fat and ash deposition in growing-finishing pigs

2002 ◽  
Vol 82 (4) ◽  
pp. 551-558 ◽  
Author(s):  
F. Gagne ◽  
J. J. Matte ◽  
G. Barnett ◽  
C. Pomar
Keyword(s):  
Feed Intake ◽  
Growing Pigs ◽  
Ash Deposition ◽  
Finishing Pigs ◽  
Nutrient Requirements ◽  
X Ray ◽  
Protein Deposition ◽  
Microbial Phytase ◽  
Ad Libitum ◽  
Alpha Amino Acid

Forty-eight 35-kg-bodyweight barrows were assigned to treatments in a 2 × 2 factorial arrangement. Main factors were feed intake level (ad libitum or restricted) and supplementation of microbial phytase (with or without). Restricted pigs rece ived 80% of the feed consumed by the corresponding ad libitum group. Phytase-supplemented diets contained 584 phytase units kg-1. Body weight, fat, protein and ash were estimated every 2 wk by dual-energy X-ray absorptiometry. Plasma alpha-amino N concentrations were measured every 30 min during the 6 first postprandial hours at 90 and 132 d of age. Microbial phytase addition reduced feed intake by 6.8% (P < 0.05). Phytase did not affect (P > 0.05) feed, energy and protein efficiencies, but it reduced protein deposition (P < 0.05) and tended to reduce ADG (P < 0.09). Ninety day-old pigs receiving phytase had higher plasma levels of alpha-amino N during the first postprandial hours (P < 0.01) as compared to control pigs. At 132 d of age these effects disappeared. Supplemental phytase may improve alpha-amino acid absorption in growing pigs but the phytase effect on protein deposition suggest that these effect is not necessarily associated with better growth performance when nutrient requirements are satisfied. Key words: Pigs, phytase, feed intake, amino acids, protein deposition

Trail-Blazer Dependency – A Roadmap for the Sustainability Revolution

2020 ◽  
Vol 13 (2) ◽  
pp. 317-337
Author(s):  
Jan Kunnas
Keyword(s):  
Case Studies ◽  
Environmental Problems ◽  
Pulp And Paper ◽  
Historical Research ◽  
The Past ◽  
Success Stories ◽  
Electric Car ◽  
Major Benefit ◽  
Quality Movement

While geologists are still considering whether the Anthropocene should be accepted as a formal geological epoch, it is up to us humanists to search for ways making this human era a good one. In this article, I will examine how we can use historical research to provide such tracks based on past regularities or similarities. Positive success stories from the past can at least provide faith that we can do something about our current environmental problems. This investigation is based on two case studies: the Tesla Model S electric car, and the Swedish pulp and paper industry's transition to chlorine-free bleaching. It argues that the sustainability revolution doesn't just share similarities with the quality movement of the 1970s and 1980s, but is essentially a continuation of it. In concordance with previous megatrends, the major benefit of the sustainability revolution will be reaped by countries and companies running ahead of the curve. A new term, 'trail-blazer dependency' is introduced; by setting an example, the first-movers are opening a trail for late-comers to follow.

scholarly journals 88 Benefits of increasing amino acid intake in late gestation in prolific sows

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 76-76
Author(s):  
Ron Ball ◽  
Crystal L Levesque ◽  
D J Cadogan
Keyword(s):  
Birth Weight ◽  
Amino Acid ◽  
Reproductive Performance ◽  
Essential Amino Acid ◽  
Control Diet ◽  
Genetic Selection ◽  
Late Gestation ◽  
Negative Effects ◽  
Amino Acid Levels ◽  
The Many

Abstract Most sows are fed a constant energy and amino acid supply throughout gestation, in line with the recommendations of most authorities and swine genetic companies. These recommendations for sow feeding have seen little change in decades, despite the many ways that sows have changed dramatically in reproductive performance. Beginning in about the year 2000, sow litter size has steadily increased as a result of genetic selection. With this increase in litter number has been a steady decline in birth weight, and the resulting negative effects of lower birthweight on subsequent piglet performance. Many experiments using so-called ‘bump’ feeding, or increased energy intake in late gestation, have been conducted in attempts to arrest this decline in birthweight and piglet performance. Generally, these experiments have shown little to no improvement in birthweight and often have negative effects on sow feed intake during gestation. These experiments have ignored the fact that the energy:amino acid ratios (lysine, threonine, isoleucine, tryptophan) in late gestation are different than during early and mid-gestation. In recent research in Australia we hypothesised that rapidly increasing essential amino acid levels in late gestation would increase birth weight and potentially improve subsequent reproductive performance. Three hundred and thirty-four multiparous PIC sows (average parity 3.6, average LW 261 kg) were housed in a dynamic gestation pen after mating and randomly assigned to one of two diet regimes. Two 13.5 MJ/kg DE gestation diets were formulated and created by blending in an ESF. The Control diet contained 0.48 g SID lysine per MJ DE and SID threonine, methionine+ cysteine, isoleucine and tryptophan at 68%, 65%, 58% and18% of SID lysine and offered at 2.2kg/day from d 28 to d 110. Sow were then moved to the farrowing house and placed on a lactation diet at 3.5kg/d. The Treatment diet contained 0.55 g SID lysine/MJ DE and SID threonine, methionine+cysteine, isoleucine and tryptophan at 78%, 65%, 60% and 20% of SID lysine and offered at 2.1kg/d from d 28 to d 85 and then increased to 2.4 kg/d to d 110 d. Increasing essential amino acid levels in late gestation increased gestational weight gain (5.6 kg, P=0.004), increased total litter birth weight (1.25 kg, P=0.003), and increased the birthweight of liveborn pigs from 1.286 to 1.329 kg, (P=0.04). There was no significant effect on the total number born or born alive. Piglet performance is not available because this commercial farm practices cross-fostering. Effects of continuation of this feeding regime in the same sows during subsequent parities is currently being evaluated.

scholarly journals METABOLIC ALTERATIONS IN SURGICAL PATIENTS. I. THE EFFECT OF ALTERING THE ELECTROLYTE, CARBOHYDRATE AND AMINO ACID INTAKE*

1953 ◽  
Vol 138 (3) ◽  
pp. 434-452 ◽  
Author(s):  
William E. Abbott ◽  
Harvey Krieger ◽  
Louis I. Babb ◽  
Stanley Levey ◽  
William D. Holden
Keyword(s):  
Amino Acid ◽  
Surgical Patients ◽  
Metabolic Alterations ◽  
Acid Intake ◽  
Amino Acid Intake

scholarly journals Are Dietary Amino Acids or Protein Quality Associated with Infant Length Gain from 6 to 12 Months in Rural Malawi? (P10-010-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Andrew Matchado ◽  
Kathryn Dewey ◽  
Christine Stewart ◽  
Per Ashorn ◽  
Ulla Ashorn ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Breast Milk ◽  
Protein Quality ◽  
Complementary Food ◽  
Complementary Foods ◽  
Acid Intake ◽  
Dietary Amino Acid ◽  
Amino Acid Intake ◽  
Length Gain

Abstract Objectives 1) to estimate the probability of inadequate amino acid intake among infants 9–10 months of age in rural Malawi 2) to evaluate whether dietary amino acid intake or protein quality are associated with length gain from 6 to 12 months of age Methods We assessed total amino acid intake from breast milk and complementary foods in 285 infants. Breast milk intake and complementary foods were estimated using dose-to-mother deuterium oxide dilution method and repeat 4-pass interactive 24-hour recall interviews, respectively. Amino acid composition values were taken from FAO human milk profile, Tanzania Food Composition table and International Minilist. Protein quality was estimated using Digestible Indispensable Amino Acid Score (DIAAS). Probability of intake below Estimated Average Requirement (EAR) for each amino acid was estimated using National Cancer Institute (NCI) method. We estimated protein quality of complementary food using median DIAAS. We assumed a DIAAS of ≥0.75 to represent a diet or food with good protein quality. Relationships between amino acid intake or protein quality with length gain were assessed using regression models. Length was measured at 6 and 12 months of age and length for age z-score (LAZ) velocity was calculated (ΔLAZ/months). Results The probability of inadequate amino acid intake from breast milk and complementary food that included a lipid-based nutrient supplement (LNS) was 3% for lysine, 0% for tryptophan, threonine, valine, histidine, isoleucine, leucine, sulfur containing amino acids (SAA), and aromatic amino acids (AAA). Without LNS, the probability was 7% for lysine and 0–2% for the other amino acids. The median (interquartile range) DIAAS for complementary food with and without LNS was 0.70 (0.28) and 0.64 (0.32), respectively. Dietary amino acid intake and protein quality were not significantly associated with length gain velocity from 6 to 12 months even after adjusting for confounding factors. Conclusions The prevalence of inadequate amino acid intake in 9–10 months old infants in rural Malawi is very low. However, in conditions of frequent clinical or sub-clinical infections this situation may be different. Linear growth at 6–12 months does not appear to be limited by dietary amino acid intake or protein quality in this setting. Funding Sources The Bill & Melinda Gates Foundation.

scholarly journals PSXI-31 Program Chair Poster Pick: Determination of the threonine requirement in adult and senior Labrador Retrievers using the indicator amino acid oxidation technique

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 321-322
Author(s):  
Jordan T Weil ◽  
Jessica L Varney ◽  
Jason W Fowler ◽  
Craig N Coon
Keyword(s):  
Amino Acid ◽  
Control Diet ◽  
Genetic Selection ◽  
Isotope Ratio Mass Spectrometry ◽  
Acid Oxidation ◽  
Amino Acid Oxidation ◽  
Amino Acid Requirements ◽  
Indispensable Amino Acids ◽  
Nutrient Profiles ◽  
Labrador Retrievers

Abstract Although nutrient profiles for canines have been developed in the past, the need to update amino acid (AA) requirements has gained importance as genetic selection changes the recommended nutrients. Correctly feeding AA to canines can have enormous effects, considering a deficiency or excess of such nutrient can lead to weight loss, disease, or in some cases, death. Amino acid requirements can be determined through the nitrogen balance or indicator amino acid oxidation (IAAO) methods. In this experiment, the IAAO technique was used to determine the threonine (Thr) requirement in Labrador retrievers. A total of six dogs (6 adult and 6 senior) were subjected to six diets with varying levels of Thr, ranging from deficient to excess. Diets were formulated to 1.6x NRC values for all indispensable amino acids. The control diet was fed for two days, followed by a day in which the test diet was fed, a tracer AA was supplied, and breath samples were collected. On test day, a priming dose of L-[1-13C]phenylalanine (Cambridge Isotope Laboratories, Inc.) based on the subject’s body weight was first supplied, followed by [1-13C]Phe doses every thirty minutes, spanning a four hour period. A respiration mask was placed on each subject every thirty minutes (Oxymax, Columbus Instruments), 13CO2 was collected, and enrichment was determined by isotope ratio mass spectrometry (IRMS). Results for IRMS were converted to atom percent excess (APE) and analyzed using a piecewise model of best fit (JMP® Pro 15). The segmented line regression showed that the Thr mean and population requirements were determined to be 1.21 ± 0.24 and 0.92 ± 0.17 g/1000kcal (mean ± 2SD) for adult and senior dogs, respectively. As the pet food industry becomes more specialized in diets relating to aging, and diseased canines, updating the amino acid requirements related to such animals is increasingly important.

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