The nutrition of the veal calf. 6. The effect of ultra-high (68 per cent) fat milk powders added to liquid skim milk, and a comparison with spray-dried skim milk powder containing 20 per cent margarine fat

Roy, J.H.B.; Stobo, I.J.F.; Gaston, H.J.; Shotton, S.M.; Ganderton, P.

Animal Production 17(2): 109-127

1973


ISSN/ISBN: 0003-3561
DOI: 10.1017/s0003356100016858
Accession: 000238855

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Abstract
6. Fifty-one male Jersey, Ayrshire and British Friesian calves were reared from birth to veal weights on one of three liquid diets. Two high-fat milk powders containing beef tallow (T) or a mixture of coconut oil and beef tallow (CT) 680 g/kg DM were mixed with liquid skimmed milk (35 g powder/kg) to give diets TLS and CTLS, containing 200 g fat/kg DM. The third diet was of reconstituted spray-dried skimmed milk containing 200 g margarine fat/kg (MDS). Incidence of diarrhoea and of nasal discharge for all breeds, and of high rectal temperature for the Ayrshires, were greatest for calves given MDS and lowest for those given TLS. Incidence of lung lesions at slaughter was 100, 72 and 57% for the Jersey, Friesian and Ayrshire calves, respectively. Severity of lung lesions was least for calves given TLS. Intake of DM and liveweight gain, especially for the Ayrshires, were greater for calves given TLS and CTLS. Fat digestibility was lowest for TLS. Protein digestibility increased with age. Digestibilities of DM and lactose and absorption of ash and Ca decreased with age. Retentions of Ca and N were lowest on MDS. Killing-out percentage was highest for the Friesian and lowest for the Jersey calves. Perirenal fat deposition was highest for the Jerseys and lowest for the Ayrshires. Skin weight/kg W0.73 was higher for the Ayrshire calves than for the other breeds.