Matheus Hernandes Leira

Physical preparation and antioxidant supplementation for endurance racehorses

The objective of this review is to discuss aspects of the practice of endurance racing and alternatives to reduce oxidative stress in horses. Characterized by a high aerobic effort and requirement of the organic systems for maintenance of homeostasis, the endurance race is a form of sport for horses that demands great attention to the physical preparation of these animals and must be progressive, paying attention to the physiological parameters to evaluate the adaptation of the organism. To begin the preparation, the animals must be at least five years old and the duration can be on average of three years. Another factor that may be detrimental to the health and well-being of competing horses is the occurrence of oxidative stress, due to the accumulation of free radicals in the tissues, generating post-exercise muscle injuries. Antioxidant supplementation has been an alternative to this disorder. Several studies using compounds rich in antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx), demonstrate positive effects on antioxidant status, markers of oxidative stress and muscle enzymes, which may represent an improvement in performance during the exercise and recovery of animals destined to the practice of equestrian sports. Therefore, a correct physical preparation becomes crucial and antioxidant supplementation may be used to maintain the health and well-being of horses destined to the equestrian endurance practice.

Relação homem versus touro nas arenas de rodeio

The Rodeo was recognized as a competitive sport during the first decades of the twentieth century, the aim of this work is to show the relationship of the pedestrian who is an athlete and his relationship with the rodeo bulls. The pawn should remain on the animal for eight seconds by holding only one hand on a rope (bull riding) or saddle (riding on horses) according to the riding mode. The other hand must be placed upwards and if it is touched on the animal or on the fence the athlete is disqualified, soon after riding the bull stops jumping. However, most of the studies related to competitive rodeo prioritize the psychological aspects and the injuries that occurred in this sport, not characterizing the profile of physical fitness. This sport is known for the muscular strength, agility, balance and courage with which competitors face trained animals. of its participants, the great difference of strength and weight between athletes and animals.

Fatores que alteram a produção e a qualidade do leite: Revisão

The main factors that affect the physical-chemical and microbiological characteristics of fresh milk are related to zootechnical care and the adequate production and storage of the product in rural properties. It article approach the main aspects that interfere in milk composition, especially those associated to the feeding of lactating females. The criteria of hygiene and management of the animals during the milking are focused, in the light of the relation that they present, with the prevention of mastites and the quality of the milk. The importance of the cooling of the freshly milked product is emphasized, as well as the need to modernize the current milk transportation system, from the producer to the processing plants, as fundamental instruments to guarantee the quality of the milk of consumption and the products dairy products.

Bem-estar dos animais nos zoológicos e a bioética ambiental

The zoos are aimed at species conservation, professional development and improvement, scientific research, environmental education and leisure. However, the population searches for zoos mainly for recreation and recreation, and most visitors are families with children who want to enjoy wildlife in company, being less important education, escape and introspection, the officialization of zoos requires the fulfillment of requirements regulated by the legislation of each country, the acquisition of these animals must also obey the strict norms of importation or collection in natural habitat, and the indigenous fauna cannot be sold or exchanged with other establishments unless permission is given and endorsed by the competent organs, conditioned to surplus animals and Having been born in captivity, within the priorities and moral obligations of zoos lies the demand to provide conditions for the animals to exhibit natural behaviors and automatically optimize animal welfare conditions.

Tétano em um equino : R elato de caso

O tetano e uma doenca causada pelas toxinas tetanolisina, tetanoespasmina e toxina nao espasmogenica, produzidas pela bacteria Clostridium tetani em anaerobiose. Foi atendido um equino da raca manga larga marchador, femea de 8 anos de idade, pelagem Tordilha e peso de 400 kg, no exame clinico o animal apresentava andar em forma de cavalete, calda semi erguida e quando manipulada o cabreiro ela apresentava protrusao da terceira palpebra, nao havia machucados, foi examinado os cascos, bem como todo o corpo do animal e nao foi encontrado nada, com base no exame fisico do animal, bem como os sinais clinicos apresentados o diagnostico de tetano foi estabelecido. O tratamento foi imediato instituido com soro antitetânico por via intravenosa, terapia com antibioticos e a terapia com relaxantes musculares. O animal se recuperou apos 20 dias de tratamento.

SELÊNIO E VITAMINA EM DIETAS PARA TILÁPIAS Oreochromis niloticus

Dentre as especies de peixes que demonstram potencial para o cultivo no Brasil, a tilapia do Nilo (Oreochromis niloticus) e considerada a especie mais produtiva. Essa especie apresenta diversas vantagens, entre elas: rapido crescimento, maior rendimento de file, resistencia a baixa qualidade de agua e boa aceitacao no mercado consumidor. Na nutricao de peixes varios sao os aspectos a serem avaliados em uma racao. O selenio e a vitamina E fazem parte de um sistema de defesa antioxidante multicomponente. Este sistema protege as celulas contra os efeitos adversos das especies reativas de oxigenio e outros radicais livres que iniciam a oxidacao. Alem disso a suplementacao de Vitamina E na dieta proporciona um maior desempenho produtivo, efeitos positivos nos parâmetros imunologicos dos peixes e resistencia ao estresse. O selenio e um elemento que possui margem estreita entre os niveis de exigencia e toxidez. As exigencias sao baixas, mas se nao atingida, podem comprometer o sistema antioxidante e causar graves consequencias para o metabolismo do animal. A capacidade do peixe em acumular selenio nos tecidos pode tornar a carne de pescado um interessante alimento funcional para a nutricao humana, especialmente como boa fonte de selenio. A especie tilapia do Nilo tem um nivel de exigencia especifica de selenio e vitamina E que nao pode ser satisfeito somente pelo ambiente aquatico. Desta forma uma correta suplementacao na dieta de minerais e vitaminas podera garantir um maior desempenho, proporcionando uma melhor qualidade de carne e melhor aceitacao no mercado.