Produção Animal
URI permanente para esta coleçãohttps://repositorioacademico.universidadebrasil.edu.br/handle/123456789/34
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Resultados da Pesquisa
Item Avaliação dos custos da IATF e TETF na produção de bezerros PO da raça Nelore(Universidade Brasil, 2024) Polli, Marcos Gabriel Carneiro; Orlandi, Cássia Maria BarrosoReproductive efficiency is fundamental for high genetic beef cattle herds and not always quickly, capital turnover achieved. The literature is scarce about evaluation of finance information in terms of high genetic calf production. This evaluation is important, considering the high value in capital invested. The present study evaluated two reproductive biotechnologies TAI (timed artificial insemination ) and FTET (fixed timed embryo transfer), considering costs, losses and profits of activities in two retreat farm which are from the same property in Comodoro, Mato Grosso, during the breeding season of 2022 to 2023. At Retreat 1, 432 Nelore pure bred beef cattle were submitted to TAI protocols, while at Retreat 2, 375 half blood Nelore cattle were used as recipient cattle for FTET. The embryos transferred were from in vitro production laboratory, being IVF (in vitro fertilized) embryos processed for storage based on distinct methodologies: fresh, vitrified and DT (direct transferred). The TAI resulted in 311 pregnant cattle, representing 72% of pregnancy rates, R$ 228.200,00; total costs and R$ 733,76 cost for pregnancy; while FTET resulted in 243 pregnant recipient, with 65% of pregnancy rates, with R$ 287.787,00, total costs and R$ 1.183,48 cost for pregnancy. Regarding the Nelore pure bred calf production costs, the numbers and costs were respectively TAI (n= 276) and R$ 826,81; while for FTET (n= 175), the costs were R$ 1.644,50. FTET exceeded TAI in R$ 59.587,00; considering high pregnancy losses for this biotechnology until birth of calves , which represented 28% of FTET lost rate, resulting in additional 11% of losses compared to TAI (17%) lost rate. FTET have currently being implanted, nevertheless, measures and criteria needed to be adjusted, as nutrition and reproductive management; all those aspects searching for sanitary control, which would certainly minimize the findings reported unitl the present moment.Item Ambiência, comportamento ejaculatório e parâmetros do sêmen de garanhões Quarto de milha(Universidade Brasil, 2023) Rissi, Letícia Sarro; Brennecke, Käthery; Orlandi, Cássia Maria BarrosoThe environment in which horses are placed, especially those undergoing reproductive management, is an important aspect to be evaluated. Since reproductive processes can be influenced by well-being issues, disruptions in physiological factors caused by stress can interfere with reproductive performance. The objective of this study was to assess the influence of the collection room ambiance on the behavior, semen volume, and concentration of Quarter Horse stallions. The stallions used had weights ranging from 416 to 505 kg and ages within active sexual maturity, varying from 6 to 24 years, selected based on fertility index. The experimental design employed was a dependent paired-sample design with four stallions. Movements during mounting and dismounting were observed, with a chronological recording of copulatory behavior using a camera attached to a mobile device (Samsung, model SM-A107 M/DS, Galaxy A 10s). Parameters such as muscle contraction, tail movement, and pawing were documented by day, month, and time, with identification of each animal. This analysis was initially conducted at normal video speed, and subsequently, for confirmation, the video speed was slowed down to work with each behavior separately. The frequency (number) of each activity involved in the process and the elapsed time (in seconds) for each activity were recorded. These data were then correlated with the ambiance, assessed by local internal and external temperature, digital device (dry and wet bulb), wind speed, dew point, relative humidity, and black globe index. The model also considered semen volume and concentration. The results did not reveal any influence of the collection room ambiance on the behavior, semen volume, and concentration of Quarter Horse stallions.Item Comportamento de garanhões durante a coleta de sêmen pré e pós-suplementação com compostos naturais e antioxidante(Universidade Brasil, 2022) Macedo, Joyce Augusto; Zeferino, Cynthia Pieri; Orlandi, Cássia Maria BarrosoThe stallion performance and semen processing out of the breeding season period is essential for optimizing reproductive service and management. The study described the reproductive behavior of stallions during semen collection pre and post-supplementation with natural compounds and antioxidants. Four adult Quarter Horse stallions weighing between 416 and 505 kg and active sexual maturity (6 to 24 years) were used during the routine of semen collection in a breeding center. The experiment performed in a commercial stud farm, located in the city of Araraquara, SP. The pre and post-supplementation period consisted of eight successive semen collections, with an interval of 48 hours. Between the initial and final period (75 days), the animals received 6 kg/day of commercial pelleted feed, with supplementation (45 g of the product/day) based on L-carnitine (334g/kg), beta carotene (44, 5 g/kg), folic acid (1200 mg/kg), vitamin C (22.3 g/kg) and vitamin E (27800 IU/kg), water and mineral salt ad libitum. The behavioral repertoire (interval and number) was registered by evaluating the videos recorded during the collection, considering variables since hygiene management, mounting, semen collection and completion of the procedure. The study used an “Quasi- Experimental Design” and stallion behavior pre and post supplementation was compared. The behavior repertoire data was evaluated by comparing treatment in different moments and the variable means were submitted to non-parametric Kruskal-Wallis test, at the level of 5% (P<0.05) of probability. The individual responses of each stallion revealed changes in the post-supplementation period considering the behavior repertory during semen collection, which are related to reproductive performance and they could be influenced by conditioning and supplementation.Item Desenvolvimento de sensor eletrônico de detecção de estro e frequência de monta em bovinos.(Universidade Brasil, 2020) Oliveira, Raphael Augusto de Lucena; Orlandi, Cássia Maria Barroso; Pereira, Luiz Arthur MaltaItem Rinotraqueíte infecciosa, mamilite e diarreia viral bovina em rebanhos de Humaitá/AM(Universidade Brasil, 2018) Laner, Diego; Soares, Vando Edésio; Orlandi , Cássia Maria Barroso