Effects of changes in the breeding season of Faz. Green Forest

During the 2018/2019 breeding season, 2 FTAIs plus intermediate transfers with bulls were used. This strategy was planned and monitored by the veterinarian José Henrique Tanner da Faz. Santana do Arvoredo – Vila Bela da Santíssima Trindade – MT, also a partner of Qualitas. In addition, veterinarian Wesley Carneiro na Faz. Caititu de Campinorte - GO, also had experience with the strategy and Agropontieri de Goiatuba - GO, has already been inseminating with observation of post-FTAI estrus for several years. Due to the excellent results Faz. Mata Verde and other Qualitas partner farms decided to adopt the strategy. The Farm Mata Verde practiced a 69-day Mounting Station for two harvests, starting on October 31st and ending on January 8th. In this period, 2 FTAIs were carried out, and after the 2nd IATF, certified Qualitas bulls of about 2 years of age were placed in the proportion of 1 bull for about 30 dams. Nilson Michels, one of the company's partners, inseminates 100% of the sows helped by his wife Liliane and the cowboys in a single corral. The management of births is carried out by 2 cowboys, in mobile maternities.


In Monta Station 2019, the following changes were made:
• The start was brought forward to the 20th of October and the end to the 23rd of December, decreasing to 64 days;
• Intermediate transfer was adopted after the 1st and 2nd IATF with Qualitas certified bulls in the proportion of 1 bull for 15
matrices.


These changes brought about the following changes in relation to calf births:
• Birth range changed from August 8th to November 6th (90 days) to July 24th to October 15th (83 days).
• 1173 calves were born in 2019 and 1286 calves in 2020.
• The percentage of calves born to pass-through bulls increased from 13.47% to 27.29%.
• The daily average of births increased from 13.48 (peak of 46 calves born on 08/20/2019) to 16.92 (peak of 40
calves born on 08/12/2020).
• The percentage of calves born until August increased from 41.09% to 49.61% and until September from 69.48% to 87.09%.
• The percentage of cows able to be inseminated on the first day of the breeding season increased from 54.39% to 58.78%.

Author

Leonardo Souza
Leonardo Souza
Veterinarian from the Federal University of Goiás, specialist in Beef Livestock at Rehagro, managing partner of Qualitas Genetic Improvement, with 21 years of experience in the areas of management, production and genetic improvement. The Qualitas Genetic Improvement Program has more than 40 farms in the states of GO, TO, RO, SP, PR, MG and MT and also in Bolivia, totaling a herd of more than 250,000 heads.

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