2017
DOI: 10.3168/jds.2016-12434
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Short communication: Use of fecal starch concentration as an indicator of dry feed digestion in preweaned dairy calves

Abstract: Fecal starch (FS) has been used as a tool to evaluate starch and diet digestibility in lactating dairy cows and feedlot steers. Some on-farm advisors also use FS to evaluate calf starter digestibility in preweaned dairy calves. Our objective was to evaluate the influence of starter intake (SI), starch and organic matter digestibility, milk replacer (MR) feeding rate, and age on FS concentrations in preweaned dairy calves. Male Holstein calves (43 ± 2.9 kg of body weight; n = 35) from a single farm were fed dif… Show more

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Cited by 5 publications
(12 citation statements)
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“…Linear relationships between TTSD and fecal starch concentration are consistent with observations in adult cattle (Fredin et al, 2014;Owens et al, 2016). Previously, we reported a poor relationship between starch digestion and fecal starch concentration in 3-and 6-wkold pre-weaned calves (Dennis et al, 2017), but a linear relationship between starch digestion and fecal starch after weaning. The linear regression equation of TTSD versus fecal starch in calves at 8 wk in Dennis et al (2017) was TTSD (%) = 99.683 -0.618 × fecal starch (%); R 2 = 0.86.…”
Section: Fecal Starch and Starch Digestionsupporting
confidence: 89%
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“…Linear relationships between TTSD and fecal starch concentration are consistent with observations in adult cattle (Fredin et al, 2014;Owens et al, 2016). Previously, we reported a poor relationship between starch digestion and fecal starch concentration in 3-and 6-wkold pre-weaned calves (Dennis et al, 2017), but a linear relationship between starch digestion and fecal starch after weaning. The linear regression equation of TTSD versus fecal starch in calves at 8 wk in Dennis et al (2017) was TTSD (%) = 99.683 -0.618 × fecal starch (%); R 2 = 0.86.…”
Section: Fecal Starch and Starch Digestionsupporting
confidence: 89%
“…Relationship between fecal starch and TTSD in calves in our study and that of Dennis et al (2017) were similar to reports in feedlot cattle (Owens et al, 2016) and differed from data in dairy cattle (Fredin et al, 2014). Differences to the relationships reported were likely due to differences in ration type, amount, and type of starch fed, degree of grain processing, and gastrointestinal maturation.…”
Section: Fecal Starch and Starch Digestionsupporting
confidence: 62%
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