Effects of partial replacement of corn grain with lactose in calf starters on ruminal fermentation and growth performance

A. Saegusa, K. Inouchi, M. Ueno, Y. Inabu, S. Koike, T. Sugino, M. Oba

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The objective of this study was to evaluate effects of partial replacement of dry ground corn with lactose in calf starters on dry matter intake, growth rate, ruminal pH, and volatile fatty acid profile. Sixty Holstein bull calves were raised on a high plane of nutrition program until 55 d of age. Calves were fed texturized calf starters containing 30.1% steam-flaked grains and lactose at 0 (control), 5, or 10% (n = 20 for each treatment) on a dry matter basis. All calves were fed treatment calf starters ad libitum from d 7 and kleingrass hay from d 35. Ruminal pH was measured continuously immediately after weaning (d 55–62) for 15 calves (n = 5 per treatment), and 3 wk after weaning (d 77 to 80) for the other 45 calves (n = 15 per treatment). Dry matter intake, growth performance, and ruminal pH variables were not affected by treatment. However, according to Spearman's correlation coefficient (rs) analyses, lactose intake was positively correlated with dairy minimum ruminal pH (rs = 0.306) for the data collected from d 77 to 80. Similarly, hay intake was not affected by treatment, but positively correlated with daily mean (rs = 0.338) and maximum ruminal pH (rs = 0.408) and negatively correlated with duration pH <5.8 (rs = −0.329) and area pH <5.8 (rs = −0.325), indicating that the variation in hay intake among animals might have masked treatment effects on ruminal pH. Ruminal molar ratio of acetate was higher (45.2 vs. 40.6%), and that of propionate was lower in 10% lactose than control (35.3 vs. 40.2%) for ruminal fluid collected on d 80; however, molar ratio of butyrate was not affected by treatment. These results indicate that lactose inclusion in calf starters up to 10% of dry matter might not affect dry matter intake and growth performance of calves, but that greater lactose and hay intake might be associated with higher ruminal pH.

Original languageEnglish
Pages (from-to)6177-6186
Number of pages10
JournalJournal of Dairy Science
Volume100
Issue number8
DOIs
Publication statusPublished - Aug 2017

Fingerprint

Lactose
rumen fermentation
lactose
Fermentation
Zea mays
growth performance
calves
corn
Growth
hay
dry matter intake
Weaning
weaning
Volatile Fatty Acids
Butyrates
Propionates
Steam
food and nutrition programs
feeding level
rumen fluids

All Science Journal Classification (ASJC) codes

  • Food Science
  • Animal Science and Zoology
  • Genetics

Cite this

Effects of partial replacement of corn grain with lactose in calf starters on ruminal fermentation and growth performance. / Saegusa, A.; Inouchi, K.; Ueno, M.; Inabu, Y.; Koike, S.; Sugino, T.; Oba, M.

In: Journal of Dairy Science, Vol. 100, No. 8, 08.2017, p. 6177-6186.

Research output: Contribution to journalArticle

Saegusa, A. ; Inouchi, K. ; Ueno, M. ; Inabu, Y. ; Koike, S. ; Sugino, T. ; Oba, M. / Effects of partial replacement of corn grain with lactose in calf starters on ruminal fermentation and growth performance. In: Journal of Dairy Science. 2017 ; Vol. 100, No. 8. pp. 6177-6186.
@article{7e3a7910883548059be149568a85c778,
title = "Effects of partial replacement of corn grain with lactose in calf starters on ruminal fermentation and growth performance",
abstract = "The objective of this study was to evaluate effects of partial replacement of dry ground corn with lactose in calf starters on dry matter intake, growth rate, ruminal pH, and volatile fatty acid profile. Sixty Holstein bull calves were raised on a high plane of nutrition program until 55 d of age. Calves were fed texturized calf starters containing 30.1{\%} steam-flaked grains and lactose at 0 (control), 5, or 10{\%} (n = 20 for each treatment) on a dry matter basis. All calves were fed treatment calf starters ad libitum from d 7 and kleingrass hay from d 35. Ruminal pH was measured continuously immediately after weaning (d 55–62) for 15 calves (n = 5 per treatment), and 3 wk after weaning (d 77 to 80) for the other 45 calves (n = 15 per treatment). Dry matter intake, growth performance, and ruminal pH variables were not affected by treatment. However, according to Spearman's correlation coefficient (rs) analyses, lactose intake was positively correlated with dairy minimum ruminal pH (rs = 0.306) for the data collected from d 77 to 80. Similarly, hay intake was not affected by treatment, but positively correlated with daily mean (rs = 0.338) and maximum ruminal pH (rs = 0.408) and negatively correlated with duration pH <5.8 (rs = −0.329) and area pH <5.8 (rs = −0.325), indicating that the variation in hay intake among animals might have masked treatment effects on ruminal pH. Ruminal molar ratio of acetate was higher (45.2 vs. 40.6{\%}), and that of propionate was lower in 10{\%} lactose than control (35.3 vs. 40.2{\%}) for ruminal fluid collected on d 80; however, molar ratio of butyrate was not affected by treatment. These results indicate that lactose inclusion in calf starters up to 10{\%} of dry matter might not affect dry matter intake and growth performance of calves, but that greater lactose and hay intake might be associated with higher ruminal pH.",
author = "A. Saegusa and K. Inouchi and M. Ueno and Y. Inabu and S. Koike and T. Sugino and M. Oba",
year = "2017",
month = "8",
doi = "10.3168/jds.2017-12616",
language = "English",
volume = "100",
pages = "6177--6186",
journal = "Journal of Dairy Science",
issn = "0022-0302",
publisher = "Elsevier Limited",
number = "8",

}

TY - JOUR

T1 - Effects of partial replacement of corn grain with lactose in calf starters on ruminal fermentation and growth performance

AU - Saegusa, A.

AU - Inouchi, K.

AU - Ueno, M.

AU - Inabu, Y.

AU - Koike, S.

AU - Sugino, T.

AU - Oba, M.

PY - 2017/8

Y1 - 2017/8

N2 - The objective of this study was to evaluate effects of partial replacement of dry ground corn with lactose in calf starters on dry matter intake, growth rate, ruminal pH, and volatile fatty acid profile. Sixty Holstein bull calves were raised on a high plane of nutrition program until 55 d of age. Calves were fed texturized calf starters containing 30.1% steam-flaked grains and lactose at 0 (control), 5, or 10% (n = 20 for each treatment) on a dry matter basis. All calves were fed treatment calf starters ad libitum from d 7 and kleingrass hay from d 35. Ruminal pH was measured continuously immediately after weaning (d 55–62) for 15 calves (n = 5 per treatment), and 3 wk after weaning (d 77 to 80) for the other 45 calves (n = 15 per treatment). Dry matter intake, growth performance, and ruminal pH variables were not affected by treatment. However, according to Spearman's correlation coefficient (rs) analyses, lactose intake was positively correlated with dairy minimum ruminal pH (rs = 0.306) for the data collected from d 77 to 80. Similarly, hay intake was not affected by treatment, but positively correlated with daily mean (rs = 0.338) and maximum ruminal pH (rs = 0.408) and negatively correlated with duration pH <5.8 (rs = −0.329) and area pH <5.8 (rs = −0.325), indicating that the variation in hay intake among animals might have masked treatment effects on ruminal pH. Ruminal molar ratio of acetate was higher (45.2 vs. 40.6%), and that of propionate was lower in 10% lactose than control (35.3 vs. 40.2%) for ruminal fluid collected on d 80; however, molar ratio of butyrate was not affected by treatment. These results indicate that lactose inclusion in calf starters up to 10% of dry matter might not affect dry matter intake and growth performance of calves, but that greater lactose and hay intake might be associated with higher ruminal pH.

AB - The objective of this study was to evaluate effects of partial replacement of dry ground corn with lactose in calf starters on dry matter intake, growth rate, ruminal pH, and volatile fatty acid profile. Sixty Holstein bull calves were raised on a high plane of nutrition program until 55 d of age. Calves were fed texturized calf starters containing 30.1% steam-flaked grains and lactose at 0 (control), 5, or 10% (n = 20 for each treatment) on a dry matter basis. All calves were fed treatment calf starters ad libitum from d 7 and kleingrass hay from d 35. Ruminal pH was measured continuously immediately after weaning (d 55–62) for 15 calves (n = 5 per treatment), and 3 wk after weaning (d 77 to 80) for the other 45 calves (n = 15 per treatment). Dry matter intake, growth performance, and ruminal pH variables were not affected by treatment. However, according to Spearman's correlation coefficient (rs) analyses, lactose intake was positively correlated with dairy minimum ruminal pH (rs = 0.306) for the data collected from d 77 to 80. Similarly, hay intake was not affected by treatment, but positively correlated with daily mean (rs = 0.338) and maximum ruminal pH (rs = 0.408) and negatively correlated with duration pH <5.8 (rs = −0.329) and area pH <5.8 (rs = −0.325), indicating that the variation in hay intake among animals might have masked treatment effects on ruminal pH. Ruminal molar ratio of acetate was higher (45.2 vs. 40.6%), and that of propionate was lower in 10% lactose than control (35.3 vs. 40.2%) for ruminal fluid collected on d 80; however, molar ratio of butyrate was not affected by treatment. These results indicate that lactose inclusion in calf starters up to 10% of dry matter might not affect dry matter intake and growth performance of calves, but that greater lactose and hay intake might be associated with higher ruminal pH.

UR - http://www.scopus.com/inward/record.url?scp=85020704338&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020704338&partnerID=8YFLogxK

U2 - 10.3168/jds.2017-12616

DO - 10.3168/jds.2017-12616

M3 - Article

C2 - 28624272

AN - SCOPUS:85020704338

VL - 100

SP - 6177

EP - 6186

JO - Journal of Dairy Science

JF - Journal of Dairy Science

SN - 0022-0302

IS - 8

ER -