Bonnydale Black Simmentals is a family business built on hard work, patience, dedication and an unwavering and passionate commitment to our clients and to the Australian beef industry. The business is operated by brothers Mike and Rob Introvigne and wives Julie and Diane trading as Introvigne Grazing Company. The original property (157Ha) has been in the family since 1936. Parents, Jim and Rita purchased the property from Rita’s parents in 1964 and registered the Bonnydale stud in 1974. The properties are situated 280 kilometres south of Perth (Western Australia) on top of the Darling Range in the Blackwood River valley district.
The operation consists of eight properties totalling over 2000 hectares and located in the blue ribbon agricultural shire of Boyup Brook, 20 kilometres north east of Bridgetown. The 700–800mm rainfall covers the growing season, April/May to November. The undulating terrain is pastured with sub clovers and annual rye grasses. The 1000 head cow herd is run at 1.1 hectares per cow/calf unit with the balance of the herd being 200 heifers. Bulls are sold as yearlings at the annual on property sale held in early February each year.
The 850 hectare cropping program consists of Cereals, Canola and Hay. The 2019 stud herd will see 450 Black Simmental and Simangus registered females calving with an additional 50 embryos implanted and with 120 stud heifers retained and being AI mated in 2019. All stud cows and heifers are given the opportunity to be artificially inseminated via a synchronised program. The stud expansion is due to continue to 600 cows calving in January 2021, providing increased selection pressure on bulls for sale.
The addition of the Queensland operation, Bonnydale QLD, being developed in Partnership with Jake Berghofer and Emma Patterson at Kingaroy provides for an equally large herd into the future. Heifers from Bonnydale are being sent each year to Kingaroy to develop the female herd and a significant embryo program is also being utilised.