Effect of Monensin on Growth, Reproductive Performance, and Estimated Body Composition in Holstein Heifers

R. A. Meinert, C. M.J. Yang, Arlyn Judson Heinrichs, G. A. Varga

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The objective was to determine the effect of feeding monensin on growth performance, average age at breeding, and body composition of Holstein heifers. Forty heifers were divided by weight into two groups, averaging 330 kg (heavy) and 217 kg (light) at the begenning of the trial. Within each weight group, heifers were assigned randomly to either of two treatments: without or with monensin feeding (200 mg per head daily). All heifers were fed diets containing either corn silage at 2% BW or ad libitum grass pasture supplemented with concentrates (1 to 1.5 kg per head daily). Monensin had no effect on BW, average daily gain, height at withers, heart girth, length, coccae width, or body condition score, Feeding monensin significantly decreased the age at breeding by 15 and 24 d and age at calving by 36 and 61 d for heavy and light heifers, respectively. Estimated empty body water, protein, or fat percentages determined by urea space were not affected by monensin. Heavy heifers contained a smaller percentage of empty body water but higher percentages of empty body protein and fat than light ones. The results from this study indicate that monensin can reduce age at puberty in Holstein heifers without affecting BW and composition.

Original languageEnglish (US)
Pages (from-to)257-261
Number of pages5
JournalJournal of dairy science
Volume75
Issue number1
DOIs
StatePublished - Jan 1 1992

Fingerprint

Monensin
monensin
Body Composition
body composition
heifers
reproductive performance
Holstein
Growth
Body Water
Light
Breeding
body water
Weights and Measures
Silage
Puberty
Poaceae
withers
body protein
breeding
girth

All Science Journal Classification (ASJC) codes

  • Food Science
  • Animal Science and Zoology
  • Genetics

Cite this

@article{531311ea420c4df2b9a26201b4e42a1a,
title = "Effect of Monensin on Growth, Reproductive Performance, and Estimated Body Composition in Holstein Heifers",
abstract = "The objective was to determine the effect of feeding monensin on growth performance, average age at breeding, and body composition of Holstein heifers. Forty heifers were divided by weight into two groups, averaging 330 kg (heavy) and 217 kg (light) at the begenning of the trial. Within each weight group, heifers were assigned randomly to either of two treatments: without or with monensin feeding (200 mg per head daily). All heifers were fed diets containing either corn silage at 2{\%} BW or ad libitum grass pasture supplemented with concentrates (1 to 1.5 kg per head daily). Monensin had no effect on BW, average daily gain, height at withers, heart girth, length, coccae width, or body condition score, Feeding monensin significantly decreased the age at breeding by 15 and 24 d and age at calving by 36 and 61 d for heavy and light heifers, respectively. Estimated empty body water, protein, or fat percentages determined by urea space were not affected by monensin. Heavy heifers contained a smaller percentage of empty body water but higher percentages of empty body protein and fat than light ones. The results from this study indicate that monensin can reduce age at puberty in Holstein heifers without affecting BW and composition.",
author = "Meinert, {R. A.} and Yang, {C. M.J.} and Heinrichs, {Arlyn Judson} and Varga, {G. A.}",
year = "1992",
month = "1",
day = "1",
doi = "10.3168/jds.S0022-0302(92)77760-1",
language = "English (US)",
volume = "75",
pages = "257--261",
journal = "Journal of Dairy Science",
issn = "0022-0302",
publisher = "Elsevier Limited",
number = "1",

}

Effect of Monensin on Growth, Reproductive Performance, and Estimated Body Composition in Holstein Heifers. / Meinert, R. A.; Yang, C. M.J.; Heinrichs, Arlyn Judson; Varga, G. A.

In: Journal of dairy science, Vol. 75, No. 1, 01.01.1992, p. 257-261.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of Monensin on Growth, Reproductive Performance, and Estimated Body Composition in Holstein Heifers

AU - Meinert, R. A.

AU - Yang, C. M.J.

AU - Heinrichs, Arlyn Judson

AU - Varga, G. A.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - The objective was to determine the effect of feeding monensin on growth performance, average age at breeding, and body composition of Holstein heifers. Forty heifers were divided by weight into two groups, averaging 330 kg (heavy) and 217 kg (light) at the begenning of the trial. Within each weight group, heifers were assigned randomly to either of two treatments: without or with monensin feeding (200 mg per head daily). All heifers were fed diets containing either corn silage at 2% BW or ad libitum grass pasture supplemented with concentrates (1 to 1.5 kg per head daily). Monensin had no effect on BW, average daily gain, height at withers, heart girth, length, coccae width, or body condition score, Feeding monensin significantly decreased the age at breeding by 15 and 24 d and age at calving by 36 and 61 d for heavy and light heifers, respectively. Estimated empty body water, protein, or fat percentages determined by urea space were not affected by monensin. Heavy heifers contained a smaller percentage of empty body water but higher percentages of empty body protein and fat than light ones. The results from this study indicate that monensin can reduce age at puberty in Holstein heifers without affecting BW and composition.

AB - The objective was to determine the effect of feeding monensin on growth performance, average age at breeding, and body composition of Holstein heifers. Forty heifers were divided by weight into two groups, averaging 330 kg (heavy) and 217 kg (light) at the begenning of the trial. Within each weight group, heifers were assigned randomly to either of two treatments: without or with monensin feeding (200 mg per head daily). All heifers were fed diets containing either corn silage at 2% BW or ad libitum grass pasture supplemented with concentrates (1 to 1.5 kg per head daily). Monensin had no effect on BW, average daily gain, height at withers, heart girth, length, coccae width, or body condition score, Feeding monensin significantly decreased the age at breeding by 15 and 24 d and age at calving by 36 and 61 d for heavy and light heifers, respectively. Estimated empty body water, protein, or fat percentages determined by urea space were not affected by monensin. Heavy heifers contained a smaller percentage of empty body water but higher percentages of empty body protein and fat than light ones. The results from this study indicate that monensin can reduce age at puberty in Holstein heifers without affecting BW and composition.

UR - http://www.scopus.com/inward/record.url?scp=0026444461&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026444461&partnerID=8YFLogxK

U2 - 10.3168/jds.S0022-0302(92)77760-1

DO - 10.3168/jds.S0022-0302(92)77760-1

M3 - Article

VL - 75

SP - 257

EP - 261

JO - Journal of Dairy Science

JF - Journal of Dairy Science

SN - 0022-0302

IS - 1

ER -