Utilization of partially hydrolysed starch in milk replacers by newborn lambs

Abstract

SummaryThree experiments were carried out to study the effect of replacing milk carbohydrates and part of the milk fat in milk with partially hydrolysed starch (Protamyl 110). Male and female cross-bred lambs (Suffolk × (Finnish Landrace × Dorset Horn)) were used in these experiments. They were weaned from their dams after having received colostrum at 1–2 days of age. The experimental diets were given at room temperature, in eight aliquots, at 3-h intervals through an automated feeding unit. The level of feeding was 1·05 MJ/kg0·75 live weight/day.In the first experiment, the diets were formulated to contain 28, 17 and 55% of their gross energy as protein, carbohydrate and fat respectively. Diet 1 contained glucose, while diets 2, 3 and 4 had 33, 67 and 100% of glucose respectively replaced by Protamyl. There were no significant differences in growth rate and food utilization between levels of starch inclusion.In Expt 2, the maximum Protamyl that could be incorporated in lamb milk replacers was examined. Four experimental diets were prepared so that 17 and 55; 25 and 47; 33 and 39; and 41 and 31% of their gross energy was supplied by Protamyl or butter fat respectively. It was found that up to 33% of the gross energy of the diet (41% of the dry matter) could be replaced with Protamyl without adverse effects on lamb performance. When the level of inclusions was increased to 41% of the gross energy (49% of the dry matter), lamb performance was depressed, particularly during the first 15 days of the experiment.In Expt 3, a direct comparison was made between Protamyl and lactose. The two diets used were similar in composition to diets 1 and 4 in Expt 1, except that lactose was used as a control instead of glucose. There were no differences in growth rate or food utilization as a result of replacing lactose with Protamyl.The results are discussed in relation to the development of carbohydrases in new born ruminants.

Milk fatty acid profile from grazing buffaloes fed a blend of soybean and linseed oils

“…Regarding saturated FA, Soliman et al (1979) observed an average total content of 71.7% in Egyptian buffalo milk fat, a value resulted near to that reported by Oliveira et al, (2009) in their confined experiment (69.8%) but higher than the observed in the milk fat (56-59%) for the grazing buffaloes used in the present experiment. Polidori et al (1997) also reported that buffalo milk contains about 67% of saturated FA, while Van Nieuwenhove et al (2004) reported values of 59% for long-chain saturated FA in animals fed on natural pastures.…”

Growth of Pre-ruminant Kid Goats and the Composition of Carcass Fat Deposits: Effects of Providing a PUFA-rich Fat in the Milk Replacer and Influence of the Kidding Season

“…Milk whey powder was included in the two replacers to balance the other ingredients. In relation to the nutritional utilisation and the effects produced on the animals, the protein, fat and carbohydrate sources employed are considered adequate for pre-ruminant milk replacers (Soliman et al, 1979;Ørskov, 1982;Moulin, 1983). The concentrations to which the milk replacers were prepared, and their protein and fat contents, were those considered most appropriate for this type of animal, in accordance with their typical patterns of growth and development (Sanz Sampelayo et al, 1995, 1996.…”

Dietary factors affecting the maximum feed intake and the body composition of pre-ruminant kid goats of the Granadina breed

“…To reduce bacterial growth and digestive disorders the replacers were acidified to 3 ml/l with lactic acid, as proposed by Havrevoll et al (1991). In relation to the nutritional utilization and the performance of animals, protein, fat and carbohydrate sources employed are considered adequate for pre-ruminant milk replacers (Soliman et al 1979;IZlrskov, 1982;Moulin, 1983). The ingredient composition of the diets and their gross energy concentration are shown in Table 1.…”