The effect of number of daily meals for dairy cows
on milk yield and composition

Shabi, Z.; Bruckental, I.; Tagari, H.; Zamwel, S.; Adin, G.; Arieli, A.

doi:10.22358/jafs/69300/1998

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…More frequent feeding leads to a more stable ecosystem in the rumen and less diurnal fluctuation in pH, ammonia concentrations and volatile fatty acid production. Shabi et al (1998) studied the feeding frequency on digestion in mid-lactation Holstein cows. The cows were fed two and four times daily.…”

Section: Resultsmentioning

confidence: 99%

Effect of Body Weight and Concentrate Feeding Frequency on Productive and Reproductive Performance of Barki Ewes

Nayel

Fathy²,

Kewan³

et al. 2022

Egyptian Journal of Nutrition and Feeds

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inety-six Barki ewes in second parities, aging about two years were chosen before the mating season and randomly assigned to six groups in a 2 x 3 factorial design to examine effects of ewes body weight (30kg as light ewes; L and 40kg as heavy ewes; H) and concentrate feeding frequency (once, 1X; twice, 2X and thrice, 3X) on the productive and reproductive performance of ewes and their offspring. The experimental period represents the reproductive and productive cycle of the ewe i.e., mating, gestation and lactation periods. Animals in the experimental groups were housed and fed separately in 6 pens and each treatment was fed in group. Results illustrated that the heaviest ewes digested all nutrients better than the lighter ewes leading to significantly higher feeding values. The increased frequent feeding lead to better digestibility of CF and NFE; no differences were reported for other nutrients. Heavy weight ewes digested all nutrients better with one time feeding than the two or three times. Nutritive value was higher with heavy ewe than lighter ones. Nutritive value as TDN and DCP were not improved by concentrate feeding frequency. Values of rumen liquor pH were decreased with more frequent feeding. Feeding the experimental ration more frequently lead to an increase in VFA production than feeding once. The heavy weight ewes had more VFA than the lighter ones with all frequent feeding. Heavy ewes produced significantly more milk yield than the light once. Fat corrected milk followed the same trend. No differences were reported for milk composition%. Feeding more frequently increased milk yield and fat corrected milk; milk energy / NEL intake and milk protein/ CP intake followed the adverse trend. The light ewes reported better feed conversion than the heavy weight ewes. Feeding frequency did not affect production efficiency as well as feed conversion. During the dry period the heavy weight ewes had less dry matter intake (DMI), digestible crude protein intake (DCPI), metabolizable energy (ME) and net energy for maintenance (NE m ). While, during the early gestation period no differences were found regarding the above mentioned criteria. With increasing feeding frequency in dry period, the average body weight was significantly increased; DCPI, ME and NE m followed the same trend. Also during early gestation period the above mentioned criteria followed the similar trend. DCPI was more during the early gestation than dry-period. During the suckling period, DCPI followed the opposite trend being better with heavy ewes than light ones with all feeding frequency.

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Section: Resultsmentioning

confidence: 99%

Effect of Body Weight and Concentrate Feeding Frequency on Productive and Reproductive Performance of Barki Ewes

Nayel

Fathy²,

Kewan³

et al. 2022

Egyptian Journal of Nutrition and Feeds

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Feeding measures to reduce nitrogen excretion in dairy cattle

Campeneere¹,

Boever²,

Vanacker³

et al. 2009

Archives of Animal Nutrition

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Feeding measures with a potential to improve N efficiency in dairy cattle husbandry were studied at two levels of undegradable protein balance (OEB). In each of the two experiments, two simultaneous Latin squares were conducted, each with three treatments and three lactating Holstein cows. Decreasing the OEB of the diet improved N efficiency and resulted in lower N excretion per kg milk. To avoid a negative effect of the decreased OEB on the production results, spreading the concentrate intake (as TMR or in five meals) seemed to be most promising, although only few significant effects were found. The use of protected protein sources or the addition of clinoptilolite were not successful in improving N-efficiency. The rather well balanced mixed basal diet and the large variation between animals seem to have hampered the assessment of such significant influences.

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Initial pH as a Determinant of Cellulose Digestion Rate by Mixed Ruminal Microorganisms In Vitro

Mouriño

Akkarawongsa

Weimer

2001

Journal of Dairy Science

121

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In vitro fermentations of pure cellulose by mixed ruminal microorganisms were conducted under conditions in which pH declined within ranges similar to those observed in the rumen. At low cellulose concentrations (12.5 g/L), the first-order rate constants (k) of cellulose disappearance were successively lower at initial pH values of 6.86, 6.56, and 6.02, but in each case the value of k was maintained over a pH range of 0.3 to 1.2 units, as the fermentation progressed. Plots of k versus initial pH were linear, and k displayed a relative decrease of approximately 7% per 0.1 unit decrease in pH. At high cellulose concentration (50 g/L) and an initial pH of 6.8, cellulose digestion was initially zero order, the absolute rate of digestion declined with pH and digestion essentially ceased at pH 5.3 after only 30% of the added cellulose was digested. Further incubation resulted in a loss of bound N and P, suggesting that at low pH cells lysed or detached from the undigested fibers. Pure cultures of ruminal cellulolytic bacteria also were able to ferment cellulose to a minimum pH of 5.1 to 5.3, but the extent of fermentation was increased by coculture with noncellulolytic bacteria. A model is proposed in which the first-order rate constant of cellulose digestion is determined by the pH at which the fermentation is initiated, and end product ratios reflect greater activity of the noncellulolytic population as pH declines.

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The effect of number of daily meals for dairy cows on milk yield and composition

Cited by 3 publications

References 21 publications

Effect of Body Weight and Concentrate Feeding Frequency on Productive and Reproductive Performance of Barki Ewes

Effect of Body Weight and Concentrate Feeding Frequency on Productive and Reproductive Performance of Barki Ewes

Feeding measures to reduce nitrogen excretion in dairy cattle

Initial pH as a Determinant of Cellulose Digestion Rate by Mixed Ruminal Microorganisms In Vitro

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