PPT-Crossbreeding

for Seedstock and Commercial Producers Dr Gordon F Jones Professor of Animal Science Retired Western Kentucky University Capturing the Benefits of Heterosis or Hybrid Vigor FREE Taking Advantage of Breed . To increase profitability crossbreeding must be used in a systematic plan since many of the production benefits will result only from an organized approach Before designing an effective cross breeding plan the producer must have some understanding o It is widely used in commercial beef production because of the bene64257ts it has to offer cowcalf producers Improvements in ef64257ciency can be dramatic if appropriate breed combinations are used Crossbreeding does not eliminate the need for outst Lawrence R Schae64256er Edward B Burnside Paige Glover Jalal Fatehi Centre for Genetic Improvement of Livestock University of Guelph Guelph N1G 2W1 Gencor Guelph N1H 6J2 Abstract Progeny of Holstein females mated to sires of di64256erent breeds w 50 Table 1. Summary of heritability and level of heterosis by trait type.TraitHeritabilityLevel of HeterosisCarcass/end productHighLow (0 to 5%)Skeletal measurementsMature weightGrowth rateMediumMedi Today’s Santa Gertrudis is not your Grandfather’s Santa Gertrudis. Modern. 1970’s. What is the ideal feeder calf?. At least 50% British breeding. Not over 50% Continental breeding. Not over 25% Brahman influenced . USA -On-farm . Experiences. Dan Gilbert. President. New Generation Genetics. Crossbreeding with Brown Swiss. OVERVIEW. Previous Study . Survey of Dairymen currently crossbreeding. Results for multiple traits. Today’s Santa Gertrudis is not your Grandfather’s Santa Gertrudis. Modern. 1970’s. What is the ideal feeder calf?. At least 50% British breeding. Not over 50% Continental breeding. Not over 25% Brahman influenced . Current site serving as Nucleus: CBSB in three villages in Menz area . Negasi-Amba. – Menz Gera . Dargegn. – Menz Gera. Keyaferna. . Zole. - Menz Mama. Nucleus flock - DBARC. CBSB need to be scaled up in surrounding areas .