Nutrition of the milk-fed calf

Khouri, R.H.; Pickering, F. S.

doi:10.1080/00288233.1968.10431422

Cited by 23 publications

(13 citation statements)

References 12 publications

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“…is presented in the study. Intakes and weight gains during the initial 12 weeks of the present trial were respectively 43% and 50% higher than those previously recorded in a similarly fed group of calves which had not been supplemented with iron and copper (Khouri and Pickering 1968).…”

Section: Intakementioning

confidence: 54%

“…The progressive decline in serum magnesium concentrations, previously noted to start at the age of 10 weeks in an un-supplemented group of similarly fed calves (Khouri and Pickering 1968), was not prevented in the present trial, but was delayed by about 2 weeks. A higher supplementation rate would therefore be required to compensate for the increasing endogenous faecal excretion of magnesium (Smith 1958) and the decreasing absorptive capacity for magnesium (Smith loco cit.…”

Section: Serum Magnesiummentioning

confidence: 63%

“…12-to 14-week-old calves fed on whole milk or fluid milk replacers. The problem of maintaining high intake levels in calves fed exclusively on whole milk became apparent in a previous trial (Khouri and Pickering 1968) in which daily voluntary consumption declined from over 20% of body weight during the first 6 weeks of life to 12.4% of body weight between the age of 12 and 14 weeks. or.…”

Section: Introductionmentioning

confidence: 99%

“…Blaxter et al (1957), Roy et al (1964, and Khouri and Pickering (1968). who associated the impairment of appetite in milk-fed calves with the development of a severe iron deficiency anaemia.…”

Section: Intakementioning

confidence: 99%

“…Roy. Gaston, ShilJam, Thompson, Stobo, and Greatorex (1964), and Khouri and Pickering (1968) associated this decline with the development of an iron deficiency anaemia. Comparative slaughter studies (Warner.…”

Section: Introductionmentioning

confidence: 99%

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Nutrition of the milk-fed calf

Khouri¹,

Pickering²

1969

New Zealand Journal of Agricultural Research

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An intake of spray-dried whole-ll)ilk powder equivalent to 2% of body weight was maintained in calves during the first 12 weeks of life when the powder was supplemented with iron, copper, and magnesium.Intakes relative to body weight declined after the age of 12 weeks when fortification with iron and copper ceased. Gradual increases in the dry-matter content of milk to compensate for the decline in abomasal capacity relative to body weight did not enhance intake between the age of 12 and 16 weeks.Supplementation of spray-dried whole-milk powder with iron and copper at levels of 46.7 and 5.1 mg/kg respectively maintained blood haemoglobin concentrations. Fortification of the powder with 0.25 g of magnesium per kg did not prevent, but appeared to delay, the onset of progressive hypomagnesaemia.An increase in the apparent digestibility of fat and a decrease in the digestibility of lactose and ash were noted with advancing age. Reconstitution rate did not affect the digestibility of milk nutrients up to the age of 16 weeks.

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Section: Intakementioning

confidence: 54%

Section: Serum Magnesiummentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Section: Intakementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nutrition of the milk-fed calf

Khouri¹,

Pickering²

1969

New Zealand Journal of Agricultural Research

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Effect of milk allowance on the suitability of automated behavioural and physiological measures as early disease indicators in calves

Lowe

Sutherland

Waas

et al. 2021

Applied Animal Behaviour Science

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The effect of early-weaning rations upon the efficiency of growth and carcass production with some observations on the development of forestomachs in calves

Ternouth

Pryor

1970

J. Agric. Sci.

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The live-weight gain, efficiency of food conversion, energy and nitrogen accretion as edible carcass, and the forestomaeh development were measured in three groups of calves fed for 10 weeks (days 19-89 of life) either a diet of 4-5 1 of milk daily, or a concentrate meal containing 4% sodium propionate ad libitum,, or a concentrate meal ad libitum. All groups had access to lucerne chaff and water ad libitum.The mean live-weight gains of the three groups of calves were 47-5, 36'6 and 37-1 kg respectively even though their total energy and nitrogen intakes were not significantly different. The provision of dietary propionate did not improve the efficiency of food conversion or of energy or nitrogen accretion as the calves ate less of the meal containing propionate and more lucerne chaff. The differences in live-weight gain could be accounted for by the differences in carcass weight. Associated with the higher live-weight gain was a much higher efficiency of food utilization and of edible carcass energy and nitrogen accretion. The superior efficiency of the unweaned calves was concluded to be due to the liquid portion of the diet by-passing the rumeno-reticulum into the abomasum where the efficiency of utilization of highly digestible protein and carbohydrate is greater. The concentrate plus propionate fed calves ate less concentrate but more chaff and had a lower efficiency of food utilization and edible carcass energy accretion than the other weaned group of calves.The weight of rumeno-reticular tissues was greater in the weaned than in the unweaned calves, although the meal plus propionate group ate similar quantities of chaff to the unweaned group. In all groups, the degree of papillary development was related to the intake of concentrates plus roughage. The most appropriate manner to describe ruminal tissue weight is discussed. meat production, the early weaning of calves, with the subsequent rapid increase in the weight of the The early weaning of calves commonly results in alimentary tract and its contents, may be less a considerable check to their growth rate, the advantageous than a comparison of live weight severity of this check being inversely related to the data suggests. The principal purpose of the present ago of the calf at the time of weaning (Hodgson, experiments was to study the effect of early weaning 1965). This reduced growth rate is only a temporary with and without propionate upon the efficiency of phenomenon, as Hodgson found that after weaning, food conversion and the production of edible the subsequent growth rate of his calves was not carcass. related to the age of weaning. However, especially Rickard & Ternouth (1965), while studying the in the calf, carcass weight does represent a variable ruminal development of unweaned lambs, found proportion of live weight. Roy (1964) concluded that the addition of 4% of sodium propionate to that, depending on the feeding regime, the ali-the forage portion of the diet enhanced growth rate mentary tract and its contents may represent 11-and increased ...

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Nutrition of the milk-fed calf

Cited by 23 publications

References 12 publications

Nutrition of the milk-fed calf

Nutrition of the milk-fed calf

Effect of milk allowance on the suitability of automated behavioural and physiological measures as early disease indicators in calves

The effect of early-weaning rations upon the efficiency of growth and carcass production with some observations on the development of forestomachs in calves

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