Calf Rearing: A Practical Guide (Landlinks Press) by John Moran
By John Moran
Offers info on development, food, health and wellbeing and behaviour in addition to descriptions of varied calf elevating platforms and amenities.
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Extra info for Calf Rearing: A Practical Guide (Landlinks Press)
Sample text
Cost is $12/calf. 3. Calf plasma IgG kit, which measures IgG in newborn calves, following clotting of the blood, with results obtained within 10 minutes. Cost is $12/calf. There is also a second blood test kit for newborn calves available to calf rearers in Australia. Based on a glutaraldehyde test to detect Ig levels in calf blood, it is called Gamma Check B ($6) and is imported from the US by MAVLAB, in Slacks Creek, Queensland, phone (07) 3808 1399. com). They are also the Australian agents for all Shoof (NZ) products.
However, some overseas advisers now recommend that dairy farmers remove the calf as soon as possible after birth (within 15 minutes) and feed it 3–4 L of top quality colostrum at one feeding. This can be via teat, bucket or stomach tube. The latest findings are that this extra colostrum will be stored in the rumen, from where it slowly passes through the abomasum into the intestines where the Ig are absorbed into the blood. T h e i m p o r ta n ce o f co lo st r u m to n e w b o r n ca lve s 17 This chapter highlights the important principles behind colostrum feeding to ensure that all calves get a good start to life through adequate transfer of passive immunity.
95 kg feed/kg live weight gain in high immunity calves. 70/calf. 3. Incidence of scours. 9 scour days in high immunity calves. 70. These costings did not take into account any additional veterinary bills to treat the scouring calves. 30 Calf Rearing 4. Calf deaths. 6% in high immunity calves. 10 per high immunity calf. The total savings arising from optimum colostrum feeding practices then amounted to US$23, or nearly a quarter the value of each replacement heifer calf. To directly transfer these results to Australia, I have assumed that calf rearing costs are in the same relative proportion in Australia as they are in the US.