Effectiveness of the use of the Vytelle system in evaluating bulls in Kazakhstan.

This article presents the results of the introduction of Canadian digital technologies Vytelle GrowSafe in the beef cattle breeding of Kazakhstan to assess Residual Feed Intake (RFI). The experiments were carried out with Qazaq Aqbas Breed in the Privet Farms of North Kazakhstan (Akmola and Pavlodar farms). As part of the ration in Akmola farm for a bull of 350 kg of weight, are contained 77 MJ or 7.6 kg of DM, in Pavlodar farm for a bull weighing 290 kg contains 65 MJ or 6.5 kg of DM. Studies have shown that in the Akmola farm the RFI index ranged from -2.08 to +2.88, in the Pavlodar farm from -1.89 to +2.06. According to the results of research in the Akmola farm, the RFI assessment show, 7 out of 26 bulls are suitable for breeding sale, in the Pavlodar farm out of 55 bulls 18. The assessment of the productive effect of feed on RFI, mainly (by 80%), coincided with the assessment of the ratio of gain to consumed dry matter, and some bulls showed deviations in terms of residual average daily live weight gain and the corrected value of the ratio of feed costs to live weight gain, which led to incomplete manifestation of the productive potential of the consumed feed.

Maternal instinct of imported meat direction cattle and ethology of their calves

The examination of maternal qualities in the ethology of cows and their young offspring, derived from the study on adaptability and productivity of second and third-generation Aberdeen Angus cattle imported to Kazakhstan from Canadian and European selection, is presented in this paper. The findings indicate that Canadian heifers, belonging to the second generation, displayed extended feeding behavior throughout the day, dedicating 33.2 minutes or 2.2% more time to feeding compared to their European counterparts (P < 0.001). Similar disparities between groups were observed in the duration of the ruminant process. Moreover, Canadian heifers consumed water for an additional 2 minutes or 0.6%, which can be attributed to their higher daily feed intake. The calving process of Aberdeen Angus cows generally proceeded smoothly, demonstrating a well-developed maternal instinct towards their offspring. Notably, calves born from Canadian cows exhibited greater agility and achieved the ability to stand on their feet in a shorter time, with an average duration of 41.0 ± 1.60 minutes, which was 11.7% faster than European calves. Additionally, Canadian calves displayed a shorter time to locate their mother's breast, with an average duration of 68.0 ± 7.70 minutes.(AU)

Effectiveness of the use of the Vytelle system in evaluating bulls in Kazakhstan / Eficácia da utilização do sistema Vytelle na avaliação de touros no Cazaquistão

Abstract This article presents the results of the introduction of Canadian digital technologies Vytelle GrowSafe in the beef cattle breeding of Kazakhstan to assess Residual Feed Intake (RFI). The experiments were carried out with Qazaq Aqbas Breed in the Privet Farms of North Kazakhstan (Akmola and Pavlodar farms). As part of the ration in Akmola farm for a bull of 350 kg of weight, are contained 77 MJ or 7.6 kg of DM, in Pavlodar farm for a bull weighing 290 kg contains 65 MJ or 6.5 kg of DM. Studies have shown that in the Akmola farm the RFI index ranged from -2.08 to +2.88, in the Pavlodar farm from -1.89 to +2.06. According to the results of research in the Akmola farm, the RFI assessment show, 7 out of 26 bulls are suitable for breeding sale, in the Pavlodar farm out of 55 bulls 18. The assessment of the productive effect of feed on RFI, mainly (by 80%), coincided with the assessment of the ratio of gain to consumed dry matter, and some bulls showed deviations in terms of residual average daily live weight gain and the corrected value of the ratio of feed costs to live weight gain, which led to incomplete manifestation of the productive potential of the consumed feed.

Resumo Este artigo apresenta os resultados da introdução das Tecnologias Digitais Canadianas Vytelle GrowSafe na criação de bovinos de corte no Cazaquistão para avaliar a ingestão residual de alimentos (RFI). Os experimentos foram realizados com a raça Qazaq Aqbas nas fazendas de alfeneiros Akmola e Pavlodar, no Norte do Cazaquistão. Na fazenda Akmola, a ração para um touro de 350 kg contém 77 MJ ou 7,6 kg de DM, já na fazenda Pavlodar, para um touro pesando 290 kg, a ração contém 65 MJ ou 6,5 kg de DM. Estudos demonstraram que o índice RFI variou de -2,08 a +2,88 e de -1,89 a +2,06 na exploração agrícola de Akmola e Pavlodar, respectivamente. De acordo com os resultados da pesquisa na fazenda Akmola, a avaliação da RFI mostra que 7 entre 26 touros são adequados para venda de reprodução, enquanto na fazenda Pavlodar são são 18 touros entre 55. A avaliação do efeito produtivo dos alimentos para animais na RFI, principalmente (em 80%), coincidiu com a avaliação do rácio de ganho em relação à matéria seca consumida. Alguns touros apresentaram desvios em termos de ganho de peso vivo diário médio residual e do valor corrigido do rácio entre os custos dos alimentos para animais e o ganho de peso vivo, o que levou a uma manifestação incompleta do potencial produtivo dos alimentos consumidos.