Complete-Diet Feeding of Dairy Cows

Owen, J. B.

doi:10.1016/b978-0-408-71011-4.50015-x

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…The bigger and earlier decline of the condition score and body weight of the adult cows given the stepfeeding system (1981-2) is consistent with the higher milk yield (P < 0-05) of this group in the earlier winter periods. The phenomenon of the utilization of body tissue for milk production has been described as a natural phenomenon for highyielding dairy cows (Moe & Flatt, 1969;Owen, 1978Owen, , 1979Wood, King & Youdan, 1980;and others).…”

Section: The Effect Of the Feeding System On Weight Gainmentioning

confidence: 99%

Variation in the complete diet composition given during the winter period to an autumn-calving herd

Kroll¹,

Owen²,

Whitaker

1986

J. Agric. Sci.

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SUMMARYAutumn-calving cows on a complete diet system were given a similar amount of concentrates over two winter periods in the years 1980–1 and 1981–2. Two feed allocation systems were examined: step (different diets given at different stages of lactation) and uniform (one single diet given over all the winter period).The yield of fat-corrected milk (FCM) was similar (P > 0·05) in both systems with 5·32 and 5·37 t/cow for the step and uniform system respectively in the 1st year and 4·75 and 4·35 t/cow in the 2nd year.There is an indication that adult cows or cows with a higher potential for yield can respond to the higher energy concentration diet given in early lactation but with the main effect on milk, not in FCM yield.No effect of diet distribution was found on overall weight gain but cows given the uniform system lost less weight in early lactation and this may lead to better conception for cows in such a system.

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Section: The Effect Of the Feeding System On Weight Gainmentioning

confidence: 99%

Variation in the complete diet composition given during the winter period to an autumn-calving herd

Kroll¹,

Owen²,

Whitaker

1986

J. Agric. Sci.

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“…Complete diets have been studied extensively in the U.S.A. (Coppock, 1977) and to a lesser extent in the U.K. where they have been compared with separate ingredients and reviewed in terms of the nutritional, managerial and economic advantages likely to accrue from their introduction (Owen, 1979;Gill, 1979;Bines, 1980;Phipps et al 1984).…”

Section: Introductionmentioning

confidence: 99%

Complete diets for dairy cows: the effect of energy concentration and change in energy concentration of a complete diet on intake and performance of lactating dairy cows

Phipps¹,

Bines²,

Weller³

et al. 1984

J. Agric. Sci.

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Ninety-two British Friesians (56 cows and 36 heifers) were divided into two groups during weeks 3-10 of lactation and received ad libitum either complete diet H (65 % concentrates, 35% grass silage, 11-7 MJ ME/kg D.M.) or diet M (50% concentrates, 50% grass silage, 11-2 MJ ME/kg D.M.). In weeks 11-20 half the animals of each group continued to receive the same diet (HH or MM) while the other half were changed from diet H to M (HM) or from diet M to L (ML). Diet L contained 35 % concentrates, 65% grass silage and 10-7 MJ ME/kg D.M. The crude protein concentration of all diets was maintained at about 157 g/kg D.M. by the addition of soya-bean meal to diets M and L.During weeks 3-10 the mean D.M. intake (kg/day), milk yield (kg/day), milk protein (g/kg) and live-weight change (kg/day) for animals on diets H and M were 15-0, 21-7, 33-3, 0-50 and 12-9, 20-2, 31-5, 0-35 respectively. Differences were significant for D.M. intake, milk yield and milk protein concentration. Although milk-fat concentration of cows given diet H (40-2 g/kg) was similar to that of cows given diet M (39-9 g/kg), heifers receiving diet H had a significantly lower value (37-0 g/kg) than those given diet M (39-8 g/kg).When animals were changed from diet H to M or from M to L at week 11, D.M. intake, milk yield and milk-protein concentration decreased. However, milk-fat concentration and live-weight change were generally unaffected.During the complete experimental period, weeks 3-20, animals on treatments HH, HM, MM and ML had mean D.M. intakes and milk yields of 15-3, 14-2, 13-2, 12-4 kg/day and 19-7, 18-5, 17-8, 17-0 kg/day. Milk-protein concentration, was closely related to D.M. intake, but only with heifers did diet H significantly depress milk-fat concentration. The highest live-weight gain was recorded on treatment HH (0-40 kg/day) and the lowost on treatment ML (0-29 kg/day) with intermediate values for treatments HM and MM.In vivo digestibility coefficients of D.M. and organic matter for diet H (0-731, 0-757) were significantly higher than those of diet L (0-707, 0-734) with intermediate values for diet M. However, for acid-detergent fibre the digestibility coefficient for diet H was significantly lower (0-562) than for diet L (0-662). The digestibility coefficients for nitrogen in all three diets were similar.Estimates of mean efficiency of utilization of ME for lactation were made on a weekly basis and were 0-56 and 0-64 for animals on diets H and M in weeks 3-10. During weeks 11-20 the mean values for animals on treatments HH, HM, MM and ML were 0-46, 0-53, 0-51 and 0-59, respectively.

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Reviews of the progress of Dairy Science: Long term effects of plane of nutrition on the performance of the dairy cow

Broster

1984

Journal of Dairy Research

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This is regarded as the prolongation of the effects of differential feeding after this itself has ceased. Compensatory effect Supernormal performance on re-alimentation following a period of underfeeding, as with growing stock, is included in this category. Buffering effect This is regarded as the cow's ability to counter nutritional insults by withdrawal of body reserves to support milk production. Total effect This is the summated effect over the total period of application of differential feeding. The main emphasis in this review will be placed on cumulative and residual effects of plane of nutrition within a single lactation together with effects over multiple lactations. These discussions are preceded by notes on the lactation curve, relevant aspects of experimentation, and immediate effects on performance of plane of nutrition.

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Complete-Diet Feeding of Dairy Cows

Cited by 4 publications

References 29 publications

Variation in the complete diet composition given during the winter period to an autumn-calving herd

Variation in the complete diet composition given during the winter period to an autumn-calving herd

Complete diets for dairy cows: the effect of energy concentration and change in energy concentration of a complete diet on intake and performance of lactating dairy cows

Reviews of the progress of Dairy Science: Long term effects of plane of nutrition on the performance of the dairy cow

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