Produção Animal
URI permanente para esta coleçãohttps://repositorioacademico.universidadebrasil.edu.br/handle/123456789/34
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Resultados da Pesquisa
Item Custo-benefício do uso de suplemento mineral injetável “off-label” em fêmeas zebuínas antes do início da estação de monta visando incrementar retorno financeiro(Universidade Brasil, 2024) Farto, Brígida Gabriela de Jesus Sales Sousa; Bertipaglia, Liandra Maria Abaker; Orlandi, Cássia Maria BarrosoNutrition directly influences the fertility of bovine females, as well as the survival of the embryo, in addition to ensuring, postpartum, an adequate body score for the female to return to reproduction. Reproductive performance intensely influences the revenue of beef cattle production systems and must be managed rationally. The objective was to evaluate the cost-benefit and reproductive performance of Nelore zebu heifers and primiparous heifers submitted to “off-label” injectable mineral supplementation, before implementing the Fixed Time Artificial Insemination (IATF) protocol. The experiment was carried out on a rural property, in the municipality of Alto Alegre dos Parecis, state of Rondônia. Heifers and primiparous cows were grazed in paddocks with Urochloa Brizanta grass and Big Cromo Cria mineral salt supplementation. The two groups (heifers and primiparous cows) were divided into treatment subgroups (57 heifers and 75 primiparous cows received injectable mineral mixture supplementation, and 51 heifers and 88 primiparous cows did not receive injectable mineral mixture supplementation). The injectable mineral mixture used was the commercial product Fosfosal® Virbac, at a dose of 10 mL, applied intramuscularly, 30 days before the TAI program. Injectable mineral supplementation in “off-label” Nelore cattle, both primiparous and heifers, did not demonstrate a significant effect on increasing the pregnancy rate. And the economic results reaffirm that this practice does not contribute to optimizing economic efficiency and profitability of calf production in these categories.Item Efeito do uso de cultura simbiótica no sucedâneo do leite sobre parâmetros hematológicos, bioquímicos, fecais e corporais de bezerros leiteiros(Universidade Brasil, 2021) Mancilha, Sheila Viviane de Souza; Soares, Vando EdésioAlthough dairy farming has developed a lot in recent years, the control of diarrhea in Holstein calves is still very difficult, since there is still a need for economic detachment for such control. The use of symbiotics has been widely studied and is a promising alternative in combination with antibiotics or alone. Re-establishing the gastrointestinal microenvironment improves absorption and increases the animals' immunity. This work was developed to evaluate the hematological, biochemical, fecal and body parameters of dairy calves that received a milk replacer containing a symbiotic culture of bacteria and yeast (CSBL) for a period of 30 days. The experiment was approved by CEUA under protocol 2000090. Twenty-four male Holstein calves were used, which, when properly colostrated on the day of birth, were taken to the experiment site. The calves were randomly divided into four distinct groups: a control group, a 0.5 g CSBL group, a 1.0 g CSBL group and another 2.0 g CSBL group. Every 15 days, blood samples were taken to assess hematological and biochemical parameters. The calves were weighed weekly and their body measurements were also measured (withers, rump and thorax). The group treated with 0.5 g and 1.0 g CSBL, showed greater weight gain and body performance, as well as better control of the consistency of their stools, which remained within normal and soft parameters, without diarrhea. The hematological and biochemical parameters showed mostly positive action to the use of CSBL. It is noteworthy that the concentration of CSBL 2.0 g had no or negative effect on the parameters observed in treated calves. The concentration of CSBL 0.5 g, in addition to providing a better yield, easy handling, results in an excellent cost-benefit ratio for the producer, acting positively in one of the diseases that most damage the dairy activity, diarrhea.