By testing net feed intake (NFI), that is, feed going into weight gained against known genetics, we are able to establish which animals gain the most weight by eating the least amount of feed. Feed conversion efficiencies are a primary profit driver in any beef business the only other comparable effect are weaning rates and weights. Identification of efficiency seed stock bulls to use in your herd can have a major effect on your herds bottom line especially over a extended periods of time. How is feed conversion calculated... 8 high-tech bins are mounted on electronic weigh-cells that take 1000 readings every three seconds. They use RFID-ear tag readers to record when each individual animal is eating and the amount of feed each animal consumes. The in-pen weigh cells are installed near water troughs. The technology measures partial body weight, collecting up to 500 individual weights on each animal in a single day. An algorithm based on breed, sex and age then calculates a ‘live weight’ daily. Individual daily weights of feed and water intake verse actual weight gain is collected and correlated over a 50 day period. This data is then compared to others within the group. This figure is called a conversion ratio score and is expressed either under or over the group average The Donaldson family have recently installed a Vytelle Growsafe system at their Capella district property. “Craigywarren” The first group tested was 35 Beefmaster bulls aged 17-19 months, the results were astounding. Up to 50% variance in feed conversion with no correlation between phenotype or maturity rate noticed. The test is under a feed yard situation but the ration was primarily fodder based and there is US research suggesting that there is a strong correlation between a feed yard situations and cattle on a grass pasture. In feed efficiency trials Beefmaster cattle have ranked number one when compared to over 20 mainstream breeds. Their heterosis, hybrid vigour and conversion make Beefmaster an ideal crossbreeding choice.
Inquiries: Will Haviland 0437 849 478 or Brenten Donaldson 0417 070 376