Increased dietary protein levels during lactation improved sow and litter performance

Strathe, A. B.; Bruun, Thomas Sønderby; Geertsen, Niels; Zerrahn, Jens Erik; Hansen, C. F.

doi:10.1016/j.anifeedsci.2017.08.015

Cited by 34 publications

(61 citation statements)

References 28 publications

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“…The current study estimated the SID CP requirement of hyperprolific lactating sows using litter gain as the main determinant supported by measurements on several traits of sow metabolism. Based on the average feed intake and the SID CP concentration of 135 g/kg (Strathe et al, 2017a), the daily requirement for optimal litter ADG was estimated to be 850 g SID CP/day. The 850 g SID CP/day found in the current study was considerably higher than the 700 g SID CP/day estimated in the NRC model (National Research Council, 2012) and slightly lower than the 880 g SID CP/day (±70 g/day) estimated in the requirement model by Strathe et al (2015).…”

Section: Discussionmentioning

confidence: 99%

“…This experiment was carried out on a subsample of 92 sows from a larger trial with 544 sows (Strathe et al, 2017a).…”

Section: Methodsmentioning

confidence: 99%

“…Information on the collection of feed samples and analyses is given in Strathe et al (2017a). On 544 sows, BW and back fat (BF) thickness were measured at day 2 postpartum and at weaning, and litter weight was recorded at litter standardization and at weaning (Strathe et al, 2017a).…”

Section: Data Collection Measurements and Chemical Analysesmentioning

confidence: 99%

“…Litter size (12.8 ± 1.2 piglets) at weaning was unaffected by dietary SID CP concentration, whereas ADG of the litters (0.01 × (SID CP − 135) × (SID CP 135) þ 2.53 first parity or 3.07 multiparity ) and BF loss (−0.03 × (SID CP − 127) × (SID CP 127) − 2.97) of sows increased and BW loss (0.007 × (SID CP − 143) × (SID CP 143) − 0.58) decreased with increasing dietary SID CP (P < 0.001; data not shown). For a detailed description of these results, see Strathe et al (2017a).…”

Section: Diets and Sow Performancementioning

confidence: 99%

“…The supply of protein above the requirement will cause deamination of the surplus amino acids and increased excretion of N into the environment (Hansen et al, 2014;Huber et al, 2015). In another part (Strathe et al, 2017a) of the current study, the dietary standardized ileal digestible (SID) CP concentration for maximizing litter gain was determined to be 135 g/kg. Litter gain is regarded as an important determinant of nutrient requirements of lactating sows (Trottier et al, 2015).…”

Section: Introductionmentioning

confidence: 97%

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Increased dietary protein for lactating sows affects body composition, blood metabolites and milk production

Strathe

Bruun

Tauson

et al. 2020

Animal

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Hyper-prolific sows nurse more piglets than less productive sows, putting a high demand on the nutrient supply for milk production. In addition, the high production level can increase mobilization from body tissues. The effect of increased dietary protein (104, 113, 121, 129, 139 and 150 g standardized ileal digestible (SID) CP/kg) on sow body composition, milk production and plasma metabolite concentrations was investigated from litter standardization (day 2) until weaning (day 24). Sow body composition was determined using the deuterium oxide dilution technique on days 3 and 24 postpartum. Blood samples were collected weekly, and milk samples were obtained on days 3, 10 and 17 of lactation. Litter average daily gain (ADG) peaked at 135 g SID CP/kg (P < 0.001). Sow BW and back fat loss reached a breakpoint at 143 and 127 g SID CP/kg (P < 0.001). Milk fat increased linearly with increasing dietary SID CP (P < 0.05), and milk lactose decreased until a breakpoint at 124 g SID CP/kg and 5.3% (P < 0.001) on day 17. The concentration of milk protein on day 17 increased until a breakpoint at 136 g SID CP/kg (5.0%; P < 0.001). The loss of body protein from day 3 until weaning decreased with increased dietary SID CP until it reached a breakpoint at 128 g SID CP/kg (P < 0.001). The body ash loss declined linearly with increasing dietary SID CP (P < 0.01), and the change in body fat was unaffected by dietary treatment (P=0.41). In early lactation (day 3 + day 10), plasma urea N (PUN) increased linearly after the breakpoint at 139 g SID CP/kg at a concentration of 3.8 mmol/l, and in late lactation (day 17 + day 24), PUN increased linearly after a breakpoint at 133 g SID CP/kg (P < 0.001) at a concentration of 4.5 mmol/l. In conclusion, the SID CP requirement for sows was estimated to 135 g/kg based on litter ADG, and this was supported by the breakpoints of other response variables within the interval 124 to 143 g/kg.

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Section: Discussionmentioning

confidence: 99%

“…This experiment was carried out on a subsample of 92 sows from a larger trial with 544 sows (Strathe et al, 2017a).…”

Section: Methodsmentioning

confidence: 99%

Section: Data Collection Measurements and Chemical Analysesmentioning

confidence: 99%

Section: Diets and Sow Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Increased dietary protein for lactating sows affects body composition, blood metabolites and milk production

Strathe

Bruun

Tauson

et al. 2020

Animal

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Feeding the modern sow to sustain high productivity

Theil

Krogh

Bruun

et al. 2022

Molecular Reproduction Devel

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Selection for hyper-prolific sows has increased the litter size by more than 50% during the last three decades, and proper nutrition of the female pigs has concomitantly changed due to improved prolificacy and productivity of gilts and sows. This review summarizes the physiological characteristics and nutritional challenges associated with feeding modern hyper-prolific sows during the gilt rearing period and during gestation, transition, and lactation periods. The review presents up-to-date knowledge of the energy and lysine requirements of female pigs and focuses on how nutrition may increase fat gain and limit protein and weight gain in the gilt rearing period and in early and mid-gestation. In late gestation, fetal and mammary growth should be considered and during the transition, colostrum yield and farrowing performance need to be optimized.Finally, milk production should be optimized and body mobilization should be minimized in the lactation period to achieve high feed efficiency in hyperprolific sows.

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Physiological and metabolic aspects of follicular developmental competence as affected by lactational body condition loss

Costermans

Teerds

Kemp

et al. 2022

Molecular Reproduction Devel

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Metabolic demands of modern hybrid sows have increased over the years, which increases the chance that sows enter a substantial negative energy balance (NEB) during lactation. This NEB can negatively impact reproductive outcome, which is especially evident in primiparous sows causing a reduced second parity reproductive performance. The negative effects of the lactational NEB on reproductive performance can be partly explained by the influence of the premating metabolic state, during and after lactation, on the development of follicles from which oocytes will give rise to the next litter. In addition, the degree and type of body tissue mobilization during lactation that is, adipose tissue or lean mass, highly influences follicular development. Research investigating relations between the premating metabolic state and follicular and oocyte competence in modern hybrid sows, which experience higher metabolic demands during lactation, is limited. In this review we summarize current knowledge of physiological relations between the metabolic state of modern hybrid sows and follicular developmental competence. In addition, we discuss potential implications of these relations for current sow management strategies.

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Increased dietary protein levels during lactation improved sow and litter performance

Cited by 34 publications

References 28 publications

Increased dietary protein for lactating sows affects body composition, blood metabolites and milk production

Increased dietary protein for lactating sows affects body composition, blood metabolites and milk production

Feeding the modern sow to sustain high productivity

Physiological and metabolic aspects of follicular developmental competence as affected by lactational body condition loss

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