311 Determining the Impact of Increasing Standardized Ileal Digestible Lysine for Primiparous and Multiparous Sows during Lactation.

Gourley, K. M.; Nichols, G. E.; Sonderman, J A; Spencer, Z T; Woodworth, J. C.; Tokach, Mike D; DeRouchey, Joel M.; Dritz, S. S.; Goodband, Robert D.; Kitt, Steve J; Stephenson, E. W.

doi:10.1093/jas/sky073.308

Cited by 2 publications

(6 citation statements)

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“…Increasing dietary soybean meal concentration resulted in no effect on the growth of suckling pigs even though greater changes in sow BW loss occurred with increasing dietary soybean meal concentration. Similarly, previous studies did not observe a difference in litter growth as soybean meal concentration increased from 19.3% to 34% ( Gourley et al, 2017 ) or 24.6% to 34% ( Greiner et al, 2018 ). This would suggest that modern sow genotypes will support high litter growth by mobilizing body reserves, even when feed intake is limited as demonstrated by the sows fed the high soybean meal diet in the current study.…”

Section: Discussionsupporting

confidence: 73%

“…This is likely a result of decreased lactation feed intake when sows were consuming the 35% soybean meal diet compared with 25–30% soybean meal diets. Decreased feed intake has also been observed in Lys titration studies where increasing Lys concentration by increasing soybean meal concentration from 14.5% to 48.5% ( Yang et al, 2000a ) or from 19% to 34% ( Gourley et al, 2017 ) resulted in decreased sow feed intake. In contrast, Greiner et al (2018) observed no change in feed intake when soybean meal concentration increased from 24.6% to 34% of the diet, while balancing diets to 1.12% SID Lys.…”

Section: Discussionmentioning

confidence: 76%

“…While the researchers hypothesized that the decrease in intake was due to elevated serum urea nitrogen levels and varying branch chain amino acid ratios across their experimental diets, the soybean meal concentration also increased from 12.6% to 48.5% of the diet. A more recent study ( Gourley et al, 2017 ) observed a decrease in feed intake when soybean meal increased above 29% of the total diet as total Lys concentration was increased.…”

Section: Introductionmentioning

confidence: 93%

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Effects of soybean meal concentration in lactating sow diets on sow and litter performance and blood criteria1

Gourley

Woodworth

DeRouchey

et al. 2020

Translational Animal Science

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A total of 131 sows (Line 241; DNA, Columbus, NE) were used in a study to evaluate the effect of increasing soybean meal concentration in lactating sow diets on sow and litter performance. Sows were blocked by body weight (BW) within parity on day 112 of gestation and allotted to one of three treatments of increasing dietary soybean meal (25%, 30%, or 35% of the total diet). Diets were formulated to 1.05% standardized ileal digestible lysine (Lys) with L-Lys HCl decreasing as soybean meal increased. All other amino acids and nutrients were formulated to meet nutrient requirement recommendations. Diets were fed from day 112 of gestation until weaning (day 20 ± 2). Litters were cross-fostered up to 48 h after farrowing to equalize litter size. Increasing soybean meal concentration increased (linear, P = 0.017) sow BW loss and tended to increase (quadratic, P = 0.052) sow backfat loss from farrowing to weaning. Sow average daily feed intake (ADFI) from day 0 to 7 was similar (P > 0.10) across dietary treatments. However, from day 7 to 14, 14 to weaning, and overall, ADFI decreased (linear, P = 0.01) as soybean meal concentration increased. Despite the linear response in ADFI, the greatest decrease was observed as soybean meal concentration increased from 30% to 35% of the diet. There was no evidence for difference (P > 0.10) in wean-to-estrus interval, litter size, litter weight, or litter weight gain between dietary treatments. Sow serum urea nitrogen concentrations taken on day 14 of lactation increased (linear, P = 0.001) as soybean meal concentration increased. There was no difference (P > 0.05) for sow creatinine concentration, regardless of dietary treatment, suggesting that the increased urea nitrogen was a reflection of the increased dietary crude protein as opposed to increased protein catabolism. In summary, sow feed intake decreased and weight loss increased as soybean meal concentration of the diet increased, with the greatest decrease observed at 35% of the total diet. Although there were no differences in litter performance, it appeared that 35% soybean meal in the lactation diet negatively affected feed intake.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

Effects of soybean meal concentration in lactating sow diets on sow and litter performance and blood criteria1

Gourley

Woodworth

DeRouchey

et al. 2020

Translational Animal Science

View full text Add to dashboard Cite

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“…This can affect the size of the subsequent litter via the reduction of follicular development (CLOWES et al, 2003). Garcia et al Thus, the establishment of nutritional requirements for lactating sows is important to minimize the mobilization of body reserves (GOURLEY et al, 2017). Among the amino acids required by lactating sows, more than 70% are destined for the production of milk protein (PEdERSEN et al, 2016); therefore, the adequate consumption of amino acids and protein may increase milk production (STRATHE et al, 2017).…”

Section: Sowmentioning

confidence: 99%

“…Among the amino acids, lysine stands out for its direct role in protein synthesis and as the first limiting amino acid in diets based on corn and soybean (GOURLEY et al, 2017), being used as a reference in the formulation (COTA et al, 2003). However, there is wide variation in the recommendations for lysine for lactating sows that can be attributed to several factors such as genetic differences (TU et al, 2010), sow parity (YANG et al, 2009), diet composition (COTA et al, 2003), room temperature (ROSTAGNO et al, 2017) and even the adopted response criteria (BOYd et al, 2000).…”

Section: Sowmentioning

confidence: 99%

Meta-analysis of recommended digestible lysine levels for primiparous lactating sows

et al. 2020

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A meta-analysis was carried out to evaluate the recommended levels of digestible lysine and its influence on the productive performance of primiparous lactating sows. The database consisted of 26 publications, 138 diets and 3,820 sows was developed from articles on the association between, lysine, crude protein and lactating primiparous sows. The digestible lysine levels of the studies ranged from 0.22 to 1.43% with average values of 0.85% digestible lysine in the diet, with consumption of 41.25 g day-1. The digestible lysine intake of sows was positively correlated (P<0.05) with feed intake, essential amino acids, crude protein, metabolizable energy, body weight loss sows, milk production, number and weight of piglets at weaning. Digestible lysine intake showed negative correlation (P<0.05) with backfat thickness at weaning and weaning to oestrus interval. It was observed a quadratic effect (P<0.01) of body weight loss sow and daily weight gain of piglets and a quadratic effect (P<0.01) in the weight of piglets at weaning due to increased dietary lysine level. The level of 1.04% of digestible lysine indicates less weight loss sows. The greater weight of piglets at weaning and increased daily weight gain of piglets was verified with the addition of 1.30 and 1.07% digestible lysine in the diet, respectively.

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311 Determining the Impact of Increasing Standardized Ileal Digestible Lysine for Primiparous and Multiparous Sows during Lactation.

Cited by 2 publications

References 0 publications

Effects of soybean meal concentration in lactating sow diets on sow and litter performance and blood criteria1

Effects of soybean meal concentration in lactating sow diets on sow and litter performance and blood criteria1

Meta-analysis of recommended digestible lysine levels for primiparous lactating sows

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