Feeding frequency for lactating cows: effects on digestion, milk production and energy utilization

Sutton, John; Broster, W. H.; Napper, D. J.; Siviter, J. W.

doi:10.1079/bjn19850016

Cited by 44 publications

(24 citation statements)

References 12 publications

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“…In the present study, increasing the frequency of concentrate feeding from twice to four times daily had no significant (P > 0-05) effect on silage intake or substitution rate, in accord with results of previous studies (Robinson and Sniffen, 1985;Sutton et al, 1985).…”

Section: Effects On Dm Intakesupporting

confidence: 92%

An examination of the effect of method and level of concentrate feeding on milk production in dairy cows offered a grass silage-based diet

Agnew¹,

Mayne²,

Doherty³

1996

Anim. Sci.

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An experiment was conducted to examine the effect of method and level of concentrate feeding on milk production characteristics in dairy cows offered a grass silage-based diet. Twelve treatments were used with 24 Holstein/ Friesian dairy cows in a four-period change-over design experiment. Treatments consisted of three methods of concentrate feeding (twice daily, four times daily or complete diet) and four levels of concentrate feeding (2, 4, 6 or 8 kg/day). Offering a complete diet significantly reduced silage substitution rate (0-28 kg silage dry matter (DM) per kg concentrate DM) compared with concentrates offered twice daily (0-50 kg silage DM per kg concentrate DM; P <0-01). Method of concentrate feeding had no significant effect on milk yield or milk fat concentration (P > 0-05), although the response in milk protein concentration to increased concentrate food level was significantly greater with twice and four times daily concentrate feeding than with complete diet feeding (0-59, 0-56 and 0-44 g/ kg per kg increase in concentrate food level; P< 0-05). Increasing concentrate inclusion level significantly reduced silage DM intake (P < 0-001) but significantly increased (F < 0-001) total DM intake. Milk yield and milk protein concentration were significantly increased (P < 0-001) and milk fat concentration significantly reduced (P < 0-02) with increasing concentrate inclusion level. Total ration apparent digestibility coefficients were unaffected (P>0-05) by either method of feeding or concentrate inclusion level. However, modified acid-detergent fibre apparent digestibility decreased significantly with increasing concentrate inclusion (P < 0-01). Results suggested that offering complete diets, with concentrates comprising on average 0-33 of total DM intake, increased both silage and total DM intake although this was not reflected in either increased milk yield or improvements in milk composition.

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Section: Effects On Dm Intakesupporting

confidence: 92%

An examination of the effect of method and level of concentrate feeding on milk production in dairy cows offered a grass silage-based diet

Agnew¹,

Mayne²,

Doherty³

1996

Anim. Sci.

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“…However, the quality of protein supplements may be an important factor, since in heifers fed silage-based diets soyabean meal improved the microbial NAN yield while RSM did not (Rooke et al, 1983). The slightly higher rumen OM digestibility with BU than with rapeseed feed diets may have been due to slower rates of concentrate consumption, which can improve OM digestion in some cases (Sutton et al, 1985).…”

Section: Ruminal N Digestion and Nan Flowmentioning

confidence: 99%

Effects of Supplementation of a Grass Silage and Barley Diet with Urea, Rapeseed Meal and Heat-moisture-treated Rapeseed Cake on Omasal Digesta Flow and Milk Production in Lactating Dairy Cows

Ahvenjärvi¹,

Vanhatalo²,

Huhtanen³

et al. 1999

Acta Agriculturae Scandinavica, Section A - Animal Science

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Effects of supplementation of a grass silage and barley diet with urea, rapeseed meal and heat-moisture-treated rapeseed cake on omasal digesta flow and milk production in lactating dairy cows.Four multiparous dairy cows, fitted with rumen and duodenal cannulas, were fed grass silage and one of four concentrates of barley (B), barley+urea (BU), barley+solvent-extracted rapeseed meal (BRM) or barley+ heat-moisture-treated rapeseed cake (BRC). Despite marginal N deficiencies for the control diet (B), BU did not affect milk yield, ruminal fibre digestion or omasal total non-ammonia-N (NAN) or microbial NAN flow. In contrast, BRM and BRC diets significantly increased milk and milk protein yields and omasal dietary NAN flows. Effects of rapeseed meal (RSM) and rapeseed cake (RSC) on milk yield and omasal NAN flow were similar. The diets had no effect on rumen microbial protein synthesis. In general, nonprotein N and soluble true protein comprised 0.20 of omasal total NAN flow, for all diets. Supplementary AAT from rapeseed feeds appeared to escape from the rumen as insoluble feed particles.

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“…This was not surprising, since it was observed that feed was continuously available to sheep on both feeding frequencies. In common with other research, when the diets were fed either as a mixed ration or were composed largely of forage, there was no effect of feeding frequency on voluntary intake (Stanley and Morita 1967;Sutton et al 1985).…”

Section: Ad Libitum Feeding Levelmentioning

confidence: 87%

The effect of frequency of feeding and supplementation with sucrose on ruminal fermentation of alfalfa silage given ad libitum or restricted to sheep

Charmley¹,

Veira²,

Aroeira³

et al. 1991

Can. J. Anim. Sci.

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. 1991. The effect of frequency of feeding and supplementation with sucrose on ruminal fermentation of alfalfa silage given ad libitum or restricted to sheep. Can. J. Anim. . Eight ruminally cannulated wethers were used in a factorial trial to examine the effect of frequency of feeding alfalfa silage and sucrose supplementation on voluntary intake, digestibility, rumen fermentation and rate and extent of digestion in and passage from the rumen. When diets were fed ad libitum, frequency of feeding had no effect on voluntary intake, apparent digestibility or the postfeeding concentrations of rumen ammonia N, volatile fatty acids (VFA) and pH. Similarly, VFA ratios and fluid kinetics in the rumen were unaffected. Supplementation with sucrose reduced ruminal concentrations of ammonia N at the higher level of feeding but failed to influence any other measured parameters. When intake was restricted (18 g DM kg-T body weight), increased feeding frequency reduced the post-feeding ruminal ammonia peak and reduced the post-feeding decline in pH; however, sucrose supplementation had no effect. Kinetics of the liquid phase in the rumen, particulate rate of passage and rate of digestion were not affected by feeding frequency or sucrose supplementation. It was concluded that effects observed at a restricted feeding level may not be apparent when feed is available ad libitum and vice versa.

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Feeding frequency for lactating cows: effects on digestion, milk production and energy utilization

Cited by 44 publications

References 12 publications

An examination of the effect of method and level of concentrate feeding on milk production in dairy cows offered a grass silage-based diet

An examination of the effect of method and level of concentrate feeding on milk production in dairy cows offered a grass silage-based diet

Effects of Supplementation of a Grass Silage and Barley Diet with Urea, Rapeseed Meal and Heat-moisture-treated Rapeseed Cake on Omasal Digesta Flow and Milk Production in Lactating Dairy Cows

The effect of frequency of feeding and supplementation with sucrose on ruminal fermentation of alfalfa silage given ad libitum or restricted to sheep

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