Effect Of Milk Replacer And Calf Starter By Different Feeding Scheme On Growth Development And Conversion Efficiency Of Energy And Protein In Dairy Calves

An experiment on milk replacer and calf starter by different feeding scheme was carried out with 36 newborn less than 1.83 C hinese Holstein male calves to ascertain growth development and conversion efficiency of energy and protein in dairy calves. The L9(34)orthogonal experiment designs for the whole milk powder, enzymes(α-amylase), mannan oligosaccharide and different feeding schemes by milk replacer and starters as test factors.Whole milk powder, α-amylase, mannan oligosaccharide were set to 0.00%, 12.5%, 25.00%, 0.01%, 0.15%, 0.20%, 0.05%, 0.10%, 0.20% in three levels, Three feeding schemes were used by 7+1, 5+3 and 3+5. The effect of milk replacer and calf starter by differental feeding scheme on growth development and conversion efficiency of energy and protein in dairy calves to select the best optimization solution for the purpose of supplying technology parameter for C hinese Holstein female calves early weaning by artificial cultivation or male calves by beef resource utilization. The result show that α-amylase 0.15%, whole milk powder 12.5%, mannan oligosaccharide 0.10% and the feeding schemes of 7+1 were the Optimization factor combinations for calve at 0 to 1 month old. And mannan oligosaccharide 0.15%, α-amylase0.10%, whole milk powder12.50% and feeding schemes of 7 + 1 were the Optimization factor combinations for calve at 1 to 2 month old which can be effectively improve the daily gain, energy and protein for weight gain in conversion efficiency in different months. The optimal combination have some differences, but not significant(P>0.05) in different month stages. It shows that non- milk protein completely replace milk protein is feasible in milk replacer. Non-milk protein, enzymes and probiotics promote the development of the digestive and enzyme systems. It can make the calf contact with solid feed early and stimulate of rumen development in advance. Meanwhile, these can increase the dry matter intake of calves and inhibit pemicious bacteria planting to some extent and promote the establishment of rumen microflora and redue the rate of diarrhea, and enhance the ability of digestion and absorption in calves.