Effects of distillers dried grains with solubles and forage dietary concentration in precision-fed dairy heifer diets: Mineral apparent absorption and retention

F. X. Suarez-Mena, G. J. Lascano, S. M. Hussein, Arlyn Judson Heinrichs

Research output: Contribution to journalArticle

Abstract

Objective: The objectives were to determine the effects of feeding different forage-to-concentrate ratios (F:C) and corn distillers dried grains with solubles (DDGS) inclusion rates on mineral apparent absorption (AAb) and retention in precision-fed dairy heifer rations. Materials and Methods: A split plot design with F:C as whole plot [50:50 (LF) or 75:25 (HF)] and DDGS concentration as subplot (0, 7, 14 and 21%) was administered in a 4 × 4 Latin square using 8 ruminally cannulated Holstein heifers (12.5 ± 0.5 mo of age and 344 ± 15 kg of BW), and targeted an ADG of 800 g/d. Results and Discussion: Mineral intake was affected by F:C and DDGS; there was a linear interaction in DMI. Fecal excretion of Mg, S, and Mn was greater for heifers fed HF diets, and fecal Ca, Mg, P, S, and Mn decreased linearly with increasing DDGS. Urinary excretion of Mg was greater for LF and decreased as DDGS increased. The AAb of Mg, S, and Mn was greater for LF. Linear and quadratic interactions between F:C and DGGS in AAb were observed for S and Mg, respectively. Retention of Mg was greater in LF; no differences were detected for Ca, K, Na, and S retention with F:C or DDGS. Linear interactions between F:C and DGGS were observed in the retention of Mg, P, and S. Linear and quadratic interactions in AAb for Mg and S, respectively, and a linear interaction for Mg, P, and S rentention demonstrate the importance of digestion kinetics when different F:C are used to evaluate dietary manipulations. Implications and Applications: There was a linear reduction of Ca, Mg, P, S, and Mn fecal excretion in response to the linear reduction of DMI as DDGS were incorporated in diets. Heifers fed high forage diets had greater DMI and rate of passage resulting in small increases in Mg, S, and Mn excretion in feces. Absorption and retention of most minerals, notably Ca, K, Na, and P, were not affected by dietary levels of DDGS.

Original languageEnglish (US)
Pages (from-to)169-176
Number of pages8
JournalApplied Animal Science
Volume35
Issue number2
DOIs
StatePublished - Apr 1 2019

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dairy heifers
distillers grains
Minerals
forage
Diet
minerals
diet
excretion
heifers
Feces
Zea mays
Digestion
Holstein
concentrates
feces
digestion
kinetics
corn

All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology
  • Food Science

Cite this

@article{343c1b7126bf43af8e7d206b879c35fd,
title = "Effects of distillers dried grains with solubles and forage dietary concentration in precision-fed dairy heifer diets: Mineral apparent absorption and retention",
abstract = "Objective: The objectives were to determine the effects of feeding different forage-to-concentrate ratios (F:C) and corn distillers dried grains with solubles (DDGS) inclusion rates on mineral apparent absorption (AAb) and retention in precision-fed dairy heifer rations. Materials and Methods: A split plot design with F:C as whole plot [50:50 (LF) or 75:25 (HF)] and DDGS concentration as subplot (0, 7, 14 and 21{\%}) was administered in a 4 × 4 Latin square using 8 ruminally cannulated Holstein heifers (12.5 ± 0.5 mo of age and 344 ± 15 kg of BW), and targeted an ADG of 800 g/d. Results and Discussion: Mineral intake was affected by F:C and DDGS; there was a linear interaction in DMI. Fecal excretion of Mg, S, and Mn was greater for heifers fed HF diets, and fecal Ca, Mg, P, S, and Mn decreased linearly with increasing DDGS. Urinary excretion of Mg was greater for LF and decreased as DDGS increased. The AAb of Mg, S, and Mn was greater for LF. Linear and quadratic interactions between F:C and DGGS in AAb were observed for S and Mg, respectively. Retention of Mg was greater in LF; no differences were detected for Ca, K, Na, and S retention with F:C or DDGS. Linear interactions between F:C and DGGS were observed in the retention of Mg, P, and S. Linear and quadratic interactions in AAb for Mg and S, respectively, and a linear interaction for Mg, P, and S rentention demonstrate the importance of digestion kinetics when different F:C are used to evaluate dietary manipulations. Implications and Applications: There was a linear reduction of Ca, Mg, P, S, and Mn fecal excretion in response to the linear reduction of DMI as DDGS were incorporated in diets. Heifers fed high forage diets had greater DMI and rate of passage resulting in small increases in Mg, S, and Mn excretion in feces. Absorption and retention of most minerals, notably Ca, K, Na, and P, were not affected by dietary levels of DDGS.",
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Effects of distillers dried grains with solubles and forage dietary concentration in precision-fed dairy heifer diets : Mineral apparent absorption and retention. / Suarez-Mena, F. X.; Lascano, G. J.; Hussein, S. M.; Heinrichs, Arlyn Judson.

In: Applied Animal Science, Vol. 35, No. 2, 01.04.2019, p. 169-176.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of distillers dried grains with solubles and forage dietary concentration in precision-fed dairy heifer diets

T2 - Mineral apparent absorption and retention

AU - Suarez-Mena, F. X.

AU - Lascano, G. J.

AU - Hussein, S. M.

AU - Heinrichs, Arlyn Judson

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Objective: The objectives were to determine the effects of feeding different forage-to-concentrate ratios (F:C) and corn distillers dried grains with solubles (DDGS) inclusion rates on mineral apparent absorption (AAb) and retention in precision-fed dairy heifer rations. Materials and Methods: A split plot design with F:C as whole plot [50:50 (LF) or 75:25 (HF)] and DDGS concentration as subplot (0, 7, 14 and 21%) was administered in a 4 × 4 Latin square using 8 ruminally cannulated Holstein heifers (12.5 ± 0.5 mo of age and 344 ± 15 kg of BW), and targeted an ADG of 800 g/d. Results and Discussion: Mineral intake was affected by F:C and DDGS; there was a linear interaction in DMI. Fecal excretion of Mg, S, and Mn was greater for heifers fed HF diets, and fecal Ca, Mg, P, S, and Mn decreased linearly with increasing DDGS. Urinary excretion of Mg was greater for LF and decreased as DDGS increased. The AAb of Mg, S, and Mn was greater for LF. Linear and quadratic interactions between F:C and DGGS in AAb were observed for S and Mg, respectively. Retention of Mg was greater in LF; no differences were detected for Ca, K, Na, and S retention with F:C or DDGS. Linear interactions between F:C and DGGS were observed in the retention of Mg, P, and S. Linear and quadratic interactions in AAb for Mg and S, respectively, and a linear interaction for Mg, P, and S rentention demonstrate the importance of digestion kinetics when different F:C are used to evaluate dietary manipulations. Implications and Applications: There was a linear reduction of Ca, Mg, P, S, and Mn fecal excretion in response to the linear reduction of DMI as DDGS were incorporated in diets. Heifers fed high forage diets had greater DMI and rate of passage resulting in small increases in Mg, S, and Mn excretion in feces. Absorption and retention of most minerals, notably Ca, K, Na, and P, were not affected by dietary levels of DDGS.

AB - Objective: The objectives were to determine the effects of feeding different forage-to-concentrate ratios (F:C) and corn distillers dried grains with solubles (DDGS) inclusion rates on mineral apparent absorption (AAb) and retention in precision-fed dairy heifer rations. Materials and Methods: A split plot design with F:C as whole plot [50:50 (LF) or 75:25 (HF)] and DDGS concentration as subplot (0, 7, 14 and 21%) was administered in a 4 × 4 Latin square using 8 ruminally cannulated Holstein heifers (12.5 ± 0.5 mo of age and 344 ± 15 kg of BW), and targeted an ADG of 800 g/d. Results and Discussion: Mineral intake was affected by F:C and DDGS; there was a linear interaction in DMI. Fecal excretion of Mg, S, and Mn was greater for heifers fed HF diets, and fecal Ca, Mg, P, S, and Mn decreased linearly with increasing DDGS. Urinary excretion of Mg was greater for LF and decreased as DDGS increased. The AAb of Mg, S, and Mn was greater for LF. Linear and quadratic interactions between F:C and DGGS in AAb were observed for S and Mg, respectively. Retention of Mg was greater in LF; no differences were detected for Ca, K, Na, and S retention with F:C or DDGS. Linear interactions between F:C and DGGS were observed in the retention of Mg, P, and S. Linear and quadratic interactions in AAb for Mg and S, respectively, and a linear interaction for Mg, P, and S rentention demonstrate the importance of digestion kinetics when different F:C are used to evaluate dietary manipulations. Implications and Applications: There was a linear reduction of Ca, Mg, P, S, and Mn fecal excretion in response to the linear reduction of DMI as DDGS were incorporated in diets. Heifers fed high forage diets had greater DMI and rate of passage resulting in small increases in Mg, S, and Mn excretion in feces. Absorption and retention of most minerals, notably Ca, K, Na, and P, were not affected by dietary levels of DDGS.

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