High-yielding lactating sows maintained a high litter growth when fed reduced crude protein, crystalline amino acid-supplemented diets

Camilla Kaae Hojgaard; Thomas Sønderby Bruun; Anja Varmløse Strathe; Jens Erik Zerrahn; Christian Fink Hansen

doi:10.1016/j.livsci.2019.06.002

High-yielding lactating sows maintained a high litter growth when fed reduced crude protein, crystalline amino acid-supplemented diets

Camilla Kaae Hojgaard, Thomas Sønderby Bruun, Anja Varmløse Strathe, Jens Erik Zerrahn, Christian Fink Hansen^*

^*Corresponding author for this work

4 Citations (Scopus)

Abstract

The study was conducted to determine the optimal standardized ileal digestible (SID) CP level to maximize litter gain in high-yielding lactating sows when feeding reduced CP, crystalline amino acid-supplemented diets. In total, 520 Landrace × Yorkshire sows (parity 1 to 5) were allocated to 1 of 6 diets from day 2 post-partum when litters were standardized to 14 piglets. All diets were formulated to meet or slightly exceed Danish recommendations for Lys, Met, Met + Cys, Thr and Trp using crystalline amino acids. Diets contained 116, 126, 132, 138, 144, and 153 g SID CP per kg (as-fed). Sow body weight, back fat thickness, and litter weight were recorded at litter standardization and at weaning. On a subsample of 72 sows (parity 2 to 4), milk samples were collected at day 3, 10 and 17 post-partum, and blood was sampled at day 10 and 17 post-partum. All data were subjected to ANOVA using the MIXED procedure in SAS. Litter size at weaning was not affected by the dietary CP content (13.0 ± 0.06; P = 0.40), nor was litter ADG (3.13 ± 0.03 kg/d; P = 0.52), nor milk contents of fat and lactose (P > 0.05). Likewise, the daily changes in sow body weight (−0.58 ± 0.04 kg/d, P = 0.44) and back fat thickness (−0.15 ± 0.004 mm/d, P = 0.20) were similar across dietary treatments. Milk protein (P < 0.01), milk Lys (P < 0.05), and other essential amino acids in milk protein were reduced at a SID CP concentration of 116 g/kg. Plasma concentrations of NEFA and creatinine were not affected by dietary treatment (P > 0.05), but concentrations of plasma urea nitrogen were elevated (P < 0.001) as dietary CP content increased. In conclusion, sows were able to maintain a high litter growth when fed reduced CP, crystalline amino acid-supplemented diets. Though, it is not recommended to feed the lactating sows less than 126 g SID CP/kg (as-fed).

Original language	English
Journal	Livestock Science
Volume	226
Pages (from-to)	40-47
Number of pages	8
ISSN	1871-1413
DOIs	https://doi.org/10.1016/j.livsci.2019.06.002
Publication status	Published - 2019

Keywords

Amino acid
Crude protein
High-yielding
Milk
Piglet
Sow

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10.1016/j.livsci.2019.06.002

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@article{e0f88bb5c39d44b6bc5a92ace8b078f0,

title = "High-yielding lactating sows maintained a high litter growth when fed reduced crude protein, crystalline amino acid-supplemented diets",

abstract = "The study was conducted to determine the optimal standardized ileal digestible (SID) CP level to maximize litter gain in high-yielding lactating sows when feeding reduced CP, crystalline amino acid-supplemented diets. In total, 520 Landrace × Yorkshire sows (parity 1 to 5) were allocated to 1 of 6 diets from day 2 post-partum when litters were standardized to 14 piglets. All diets were formulated to meet or slightly exceed Danish recommendations for Lys, Met, Met + Cys, Thr and Trp using crystalline amino acids. Diets contained 116, 126, 132, 138, 144, and 153 g SID CP per kg (as-fed). Sow body weight, back fat thickness, and litter weight were recorded at litter standardization and at weaning. On a subsample of 72 sows (parity 2 to 4), milk samples were collected at day 3, 10 and 17 post-partum, and blood was sampled at day 10 and 17 post-partum. All data were subjected to ANOVA using the MIXED procedure in SAS. Litter size at weaning was not affected by the dietary CP content (13.0 ± 0.06; P = 0.40), nor was litter ADG (3.13 ± 0.03 kg/d; P = 0.52), nor milk contents of fat and lactose (P > 0.05). Likewise, the daily changes in sow body weight (−0.58 ± 0.04 kg/d, P = 0.44) and back fat thickness (−0.15 ± 0.004 mm/d, P = 0.20) were similar across dietary treatments. Milk protein (P < 0.01), milk Lys (P < 0.05), and other essential amino acids in milk protein were reduced at a SID CP concentration of 116 g/kg. Plasma concentrations of NEFA and creatinine were not affected by dietary treatment (P > 0.05), but concentrations of plasma urea nitrogen were elevated (P < 0.001) as dietary CP content increased. In conclusion, sows were able to maintain a high litter growth when fed reduced CP, crystalline amino acid-supplemented diets. Though, it is not recommended to feed the lactating sows less than 126 g SID CP/kg (as-fed).",

keywords = "Amino acid, Crude protein, High-yielding, Milk, Piglet, Sow",

author = "Hojgaard, {Camilla Kaae} and Bruun, {Thomas S{\o}nderby} and Strathe, {Anja Varml{\o}se} and Zerrahn, {Jens Erik} and Hansen, {Christian Fink}",

year = "2019",

doi = "10.1016/j.livsci.2019.06.002",

language = "English",

volume = "226",

pages = "40--47",

journal = "Livestock Science",

issn = "1871-1413",

publisher = "Elsevier",

}

TY - JOUR

T1 - High-yielding lactating sows maintained a high litter growth when fed reduced crude protein, crystalline amino acid-supplemented diets

AU - Hojgaard, Camilla Kaae

AU - Bruun, Thomas Sønderby

AU - Strathe, Anja Varmløse

AU - Zerrahn, Jens Erik

AU - Hansen, Christian Fink

PY - 2019

Y1 - 2019

N2 - The study was conducted to determine the optimal standardized ileal digestible (SID) CP level to maximize litter gain in high-yielding lactating sows when feeding reduced CP, crystalline amino acid-supplemented diets. In total, 520 Landrace × Yorkshire sows (parity 1 to 5) were allocated to 1 of 6 diets from day 2 post-partum when litters were standardized to 14 piglets. All diets were formulated to meet or slightly exceed Danish recommendations for Lys, Met, Met + Cys, Thr and Trp using crystalline amino acids. Diets contained 116, 126, 132, 138, 144, and 153 g SID CP per kg (as-fed). Sow body weight, back fat thickness, and litter weight were recorded at litter standardization and at weaning. On a subsample of 72 sows (parity 2 to 4), milk samples were collected at day 3, 10 and 17 post-partum, and blood was sampled at day 10 and 17 post-partum. All data were subjected to ANOVA using the MIXED procedure in SAS. Litter size at weaning was not affected by the dietary CP content (13.0 ± 0.06; P = 0.40), nor was litter ADG (3.13 ± 0.03 kg/d; P = 0.52), nor milk contents of fat and lactose (P > 0.05). Likewise, the daily changes in sow body weight (−0.58 ± 0.04 kg/d, P = 0.44) and back fat thickness (−0.15 ± 0.004 mm/d, P = 0.20) were similar across dietary treatments. Milk protein (P < 0.01), milk Lys (P < 0.05), and other essential amino acids in milk protein were reduced at a SID CP concentration of 116 g/kg. Plasma concentrations of NEFA and creatinine were not affected by dietary treatment (P > 0.05), but concentrations of plasma urea nitrogen were elevated (P < 0.001) as dietary CP content increased. In conclusion, sows were able to maintain a high litter growth when fed reduced CP, crystalline amino acid-supplemented diets. Though, it is not recommended to feed the lactating sows less than 126 g SID CP/kg (as-fed).

AB - The study was conducted to determine the optimal standardized ileal digestible (SID) CP level to maximize litter gain in high-yielding lactating sows when feeding reduced CP, crystalline amino acid-supplemented diets. In total, 520 Landrace × Yorkshire sows (parity 1 to 5) were allocated to 1 of 6 diets from day 2 post-partum when litters were standardized to 14 piglets. All diets were formulated to meet or slightly exceed Danish recommendations for Lys, Met, Met + Cys, Thr and Trp using crystalline amino acids. Diets contained 116, 126, 132, 138, 144, and 153 g SID CP per kg (as-fed). Sow body weight, back fat thickness, and litter weight were recorded at litter standardization and at weaning. On a subsample of 72 sows (parity 2 to 4), milk samples were collected at day 3, 10 and 17 post-partum, and blood was sampled at day 10 and 17 post-partum. All data were subjected to ANOVA using the MIXED procedure in SAS. Litter size at weaning was not affected by the dietary CP content (13.0 ± 0.06; P = 0.40), nor was litter ADG (3.13 ± 0.03 kg/d; P = 0.52), nor milk contents of fat and lactose (P > 0.05). Likewise, the daily changes in sow body weight (−0.58 ± 0.04 kg/d, P = 0.44) and back fat thickness (−0.15 ± 0.004 mm/d, P = 0.20) were similar across dietary treatments. Milk protein (P < 0.01), milk Lys (P < 0.05), and other essential amino acids in milk protein were reduced at a SID CP concentration of 116 g/kg. Plasma concentrations of NEFA and creatinine were not affected by dietary treatment (P > 0.05), but concentrations of plasma urea nitrogen were elevated (P < 0.001) as dietary CP content increased. In conclusion, sows were able to maintain a high litter growth when fed reduced CP, crystalline amino acid-supplemented diets. Though, it is not recommended to feed the lactating sows less than 126 g SID CP/kg (as-fed).

KW - Amino acid

KW - Crude protein

KW - High-yielding

KW - Milk

KW - Piglet

KW - Sow

U2 - 10.1016/j.livsci.2019.06.002

DO - 10.1016/j.livsci.2019.06.002

M3 - Journal article

AN - SCOPUS:85067243135

SN - 1871-1413

VL - 226

SP - 40

EP - 47

JO - Livestock Science

JF - Livestock Science

ER -

High-yielding lactating sows maintained a high litter growth when fed reduced crude protein, crystalline amino acid-supplemented diets

Abstract

Keywords

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