Effect of diet and parity on meal patterns of lactating dairy cows

Beauchemin, K. A.; Maekawa, Mayumi; Christensen, D. A.

doi:10.4141/a01-080

Cited by 36 publications

(38 citation statements)

References 27 publications

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“…In dairy cows, DeVries et al (2007) reported that cows consuming a 50.7% forage diet spent more time eating than those fed a 62.3% forage diet. Our results concur with reports that lactating cows consumed concentrate faster than the forage portion of their ration (Beauchemin, Eriksen, Nørgaard, & Rode, 2008;Beauchemin, Maekawa, & Christensen, 2002). McClure, Van Keuren, and Althouse (1994) pointed out that DMI decreases with increase in forage NDF in the lamb's diet.…”

Section: Discussionsupporting

confidence: 92%

Dietary concentrate level affects the feed sorting behaviour of lambs

Sari¹,

Monjezi²,

Anoosheh³

2018

Animal Physiology Nutrition

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The objective of this study was to evaluate the effect of forage concentration on sorting, nutrient intake and feeding behaviour of growing lambs. Twelve weaned lambs were exposed, in a crossover design with 7-day periods, to each of two treatment diets: (i) lower-concentrate diet (LC; 40.0% concentrate) and (ii) a higher-concentrate diet (HC; 60.0% concentrate). Alfalfa hay was used as forage source. Sorting was determined by subjecting fresh feed and ort samples to particle separation and expressing the actual intake of each particle fraction as a percentage of the predicted intake of that fraction. Lambs sorted against long particles (>19 mm) on both treatments. On the LC diet, lambs sorted for medium particles, whereas animals fed the HC diet did not sort for or against medium particles. Lambs sorted for fine particles (<1.18 mm) on both treatments (p < .05). The extent of sorting for the fine particles was greater on the LC diet compared with the HC diet (p < .05). Dry matter intake was increased by increasing the concentrate content of the diet. Intake per visit and eating rate increased, and total chewing time was decreased in lambs fed HC diet. In conclusion, lambs sorted most against the longest particles and for the fine particles. Furthermore, feed sorting behaviour is affected by the forage level, and lambs sorted more for the fine particles in the LC diet.

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Section: Discussionsupporting

confidence: 92%

Dietary concentrate level affects the feed sorting behaviour of lambs

Sari¹,

Monjezi²,

Anoosheh³

2018

Animal Physiology Nutrition

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“…Meal size, meal length and the interval between meals were similar between multiparous and primiparous cows. Similarly, Beauchemin, Maekawa, and Christensen () reported that meal interval did not differ between parity in mid‐lactation, but primiparous cows consumed less feed per meal compared with multiparous cows. Multiparous cows had longer ( p = .03) interval between ruminating bouts compared with primiparous cows, which might be associated with more efficient rumination activity in older cows than younger cows.…”

Section: Resultsmentioning

confidence: 92%

Substitution of corn silage with shredded beet pulp affects sorting behaviour and chewing activity of dairy cows

Naderi

Ghorbani

Sadeghi-Sefidmazgi

et al. 2019

Animal Physiology Nutrition

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This study aims to evaluate the effects of substituting increasing concentrations of shredded beet pulp (SBP) for corn silage (CS) on nutrient intake, sorting index, intakes of particle size and nutrients, meal and rumination patterns, and chewing activity of dairy cows. Four multiparous (126 ± 13 day in milk) and 4 primiparous (121 ± 11 day in milk) Holstein cows were used in a 4 × 4 Latin square design experiment with 4 periods of 21 days. Dietary treatments were (DM basis): 16% of dietary DM as CS without SBP (0SBP); 8% CS and 8% SBP (8SBP); 4% CS and 12% SBP (12SBP); and 0% CS and 16% SBP (16SBP). We observed a reduction in the extent of sorting against long particles and medium particles but for fine particles with increasing SBP levels in the diets. The number of eating bouts per day was lesser (8.2%) in cows fed SBP diets compared with 0SBP cows and corresponded with a reduction in eating time per d across treatments. The number of ruminating bouts per day was similar across diets (16.8 bouts/day), but substituting SBP for CS in the diets tended to decrease linearly ruminating bout length (5 min/bout) and tended to increase ruminating bout interval (8 min/day). Eating, ruminating and total chewing time when expressed as minutes per kilogram of forage NDF intake and peNDF > 8 intake increased when SBP was substituted for CS in the diets. Primiparous cows had greater ruminating time (57 m/day) and total chewing time (73 min/day), eating rate (0.01 kg of DM/min) compared with multiparous cows. Also, increasing forage NDF and peNDF>8, >8‐mm DM intakes are effective means of stimulating ruminating and chewing activities. This study showed that SBP could partially replace CS and not affect DM intake, but chewing activity may decrease slightly.

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“…In competitive and noncompetitive environments, feeding activity increases after the delivery of fresh feed (Philips and Rind, 2001;Beauchemin et al, 2002;DeVries et al, 2003). Pushing the feed toward the animal results in an increase in feeding activity (DeVries et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Dairy cows fed a TMR are normally provided with fresh feed only once or twice daily. The increase in feeding behavior after feed delivery will, therefore, result in variation in feeding behavior throughout the day (Beauchemin et al, 2002;DeVries et al, 2003). This variation in feeding behavior contributes to variation in pH, VFA, and ammonia in the rumen within 24 h (Keunen et al, 2002;Kononoff and Heinrichs, 2003).…”

Section: Introductionmentioning

confidence: 99%

Effects of Monensin and Stage of Lactation on Variation of Blood Metabolites Within Twenty-Four Hours in Dairy Cows

Plaizier

Fairfield

Azevedo

et al. 2005

Journal of Dairy Science

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Effects of prepartum administration of a monensin controlled release capsule (CRC) and stage of lactation on variation of blood metabolites within 24 h were determined in 16 dairy cows. Cows were fed a total mixed ration ad libitum twice daily at 0700 and 1300 h. At calving, cows were switched from a close-up dry cow diet to a lactating cow diet. Cows were blood sampled every 3 h for 24 h at 3 stages of lactation, including 1 wk before calving (wk -1), 1 wk after calving (wk 1), and 6 wk after calving (wk 6). Serum concentrations of glucose, beta-hydroxybutyrate (BHBA), nonesterified fatty acids (NEFA), and urea exhibited significant variation within 24 h. Glucose and NEFA were, respectively, 0.09 and 0.08 mM lower between 1030 and 2230 h than between 2230 and 1030 h. beta-Hydroxybutyrate and urea were, respectively, 95.1 and 0.49 mM higher between 1030 and 2230 h than between 2230 and 1030 h. Monensin did not significantly affect glucose, NEFA, and urea in this study. Monensin reduced BHBA at wk 1, but not at wk -1 or wk 6. Glucose was lower and BHBA and NEFA were higher at wk 1 compared with wk -1 and wk 6. Urea was higher at wk 6 compared with wk -1. The variation within 24 h of glucose, BHBA, and NEFA were not affected by monensin and stage of lactation. Diurnal variation of urea was affected by stage of lactation, but not by monensin.

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Effect of diet and parity on meal patterns of lactating dairy cows

Cited by 36 publications

References 27 publications

Dietary concentrate level affects the feed sorting behaviour of lambs

Dietary concentrate level affects the feed sorting behaviour of lambs

Substitution of corn silage with shredded beet pulp affects sorting behaviour and chewing activity of dairy cows

Effects of Monensin and Stage of Lactation on Variation of Blood Metabolites Within Twenty-Four Hours in Dairy Cows

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