Digestible energy requirements for work and maintenance of horses fed conventional and fat-supplemented diets

Potter, G.D.; Webb, Susan P.; Evans, Joseph P.; Webb, Gary W.

doi:10.1016/s0737-0806(06)80163-2

Cited by 26 publications

(11 citation statements)

References 7 publications

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“…Fat is considered to be well utilised by the horse (Potter et al 1992b) and vegetable oils have a total tract digestibility exceeding 90% (Rich et al 1981;Meyer 1992). Also, when fat is substituted for carbohydrates, there may be a reduction in the heat produced from fermentation in the hindgut (McCann et al 1987;Potter et al 1990), due to the change in diet composition as well as to a reduction in dry matter intake. Moreover, there are reports of an increased efficiency in the utilisation of the metabolisable energ y with increasing fat content in the diet (McCann et al 1 9 8 7 ) .…”

Section: Introductionmentioning

confidence: 99%

Effect of partial replacement of oats with sugar beet pulp and maize oil on nutrient utilisation in horses

Lindberg¹,

Karlsson²

2001

Equine Veterinary Journal

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Summary The objective of the present work was to assess the influence of partial replacement of oats with dried unmolassed sugar beet pulp (SBP) and/or maize oil on nutrient utilisation in horses fed a traditional hay and concentrate diet. The total tract digestibility of nutrients, urinary excretion and plasma parameters were studied in a 4 × 4 Latin‐square design experiment with purebred Arabian geldings. Horses fed the SBP diets responded with a reduced (P<0.05) apparent digestibility of crude protein and feeding of maize oil resulted in an increased (P<0.05) apparent digestibility of crude fat. The apparent energy digestibility was unaffected by the replacement of oats with SBP, but increased (P<0.05) when maize oil replaced part of the oats. The urinary excretion of nitrogen increased (P<0.05) when maize oil replaced oats and the excretion of energy was higher (P<0.05) on the diets where oats were replaced by maize oil and SBP. There was a significant (P<0.05) effect across treatments of postprandial blood sampling time on plasma glucose and insulin concentrations. Also, plasma concentrations of glucose and insulin tended to be higher on the oats than on the SBP diets. In conclusion, the limited effects on the digestibility of nutrients and energy suggest that it should be possible to partially replace oats with maize oil and/or SBP in diets for horses without any impairing effects on the overall nutrient utilisation. However, the dietary‐induced changes in the urinary excretion of energy and on plasma glucose and insulin levels, indicate a possible influence of dietary carbohydrate composition on nutrient utilisation at the organ level, which requires further study.

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Section: Introductionmentioning

confidence: 99%

Effect of partial replacement of oats with sugar beet pulp and maize oil on nutrient utilisation in horses

Lindberg¹,

Karlsson²

2001

Equine Veterinary Journal

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“…Observations of lower heart rates during exercise (Pagan et a/. 1987) and lower digestible energy requirement (Potter et a/. 1990) have also been made.…”

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confidence: 99%

Exercise response, metabolism at rest and digestibility in athletic horses fed high‐fat oats

Lindberg

Essén‐Gustavsson

Dahlborn

et al. 2006

Equine Veterinary Journal

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“…Segundo Potter et al (1990), o fornecimento de dieta suplementada com óleo diminui o estresse termal, ou seja, o incremento calórico. Scott et al (1993) verificaram redução de 14% na produção de calor corporal em cavalos da raça puro-sangue Inglês submetidos ao exercício quando Tabela 3 -Teores de glicose, lactato e hematócrito dos cavalos no início e ao final do exercício-teste acrescentado óleo à ração.…”

Section: Resultsunclassified

Uso de óleo na dieta de eqüinos submetidos ao exercício

et al. 2006

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RESUMO -Objetivou-se com esta pesquisa avaliar, por meio de parâmetros hematofisiológicos, o desempenho atlético de cavalos submetidos a exercícios de média intensidade alimentados com dietas suplementadas com dois níveis de óleo vegetal (250 e 500 g/dia). Foram utilizados 18 eqüinos machos, castrados, sem raça definida, com faixa etária entre 4 e 8 anos de idade e peso corporal de 456±2,90 kg. Os animais foram distribuídos em um delineamento inteiramente aleatório, em um esquema de parcela subdividida no tempo, em que os tempos de coleta constituíram a subparcela e os níveis de óleo de soja (0, 250 e 500 g/cavalo/dia), a parcela. Os cavalos receberam, durante 30 dias, 8,40; 7,95 e 7,30 kg/dia das rações contendo 0, 250 e 500 g de óleo, respectivamente, divididas em três refeições diárias. Ao final dos 30 dias, foi realizado o exercício-teste com todos os cavalos, durante 2 horas, ao trote alongado. Foram avaliados, no início e final do exercício, os teores de glicose e lactato sangüíneos, o hematócrito e a temperatura corporal. As freqüências cardíaca e respiratória foram tomadas no início, 1 e 2 horas de exercício e 15 minutos após o exercício. Verificou-se efeito da interação tempos de coleta × níveis de óleo na dieta sobre os teores de glicose e lactato e valores de hematócrito, temperatura corporal, freqüência cardíaca e respiratória. A adição de 250 e 500 g de óleo na dieta de eqüinos submetidos ao exercício de média intensidade proporcionou melhora no desempenho hematofisiológico e, portanto, pode resultar em melhor desempenho atlético dos cavalos. Os cavalos que consumiram óleo na proporção de 500 g/dia apresentaram melhor recuperação pós-prova, confirmada pela freqüência cardíaca e pelo hematócrito. Palavras-chave: freqüência cardíaca, glicose, hematócrito, lactato Use of oil in diet of equine under exerciseABSTRACT -The objective of this research was to estimate, by haematophysiological parameters, the physical performance of horses under exercise of mid intensity and fed diets with two levels of vegetal oil (250 and 500 g/day). Eighteen castrated thoroughbred horses aging from 4 and 8 years old and averaging body weight of 456±2.90 kg were alloted to a split plot approach with repeated measures over time in a completely randomized design, with the collection times in the sub-plots and the soybean oil levels (0, 250 and 500 g per horse per day) in the plots. During 30 days, the horses were fed 8.40, 7.95, and 7.30 kg/day of diets with 0, 250 and 500 g of oil, respectively, divided in three daily feeds. At the end of 30 days, the exercise test was performed with all horses, during 2 hours, at large trot. At the beginning and at the end of the exercise, the levels of glucose, lactate, haematocrit, body temperature were estimated. The heart and respiratory rates were taken at the beginning, 1 and 2 hours of exercise and 15 minutes after the end of the exercise. Interaction of collection times × dietary oil levels on the levels of glucose, lactate, and haematocrit, body temperature, and heart and respirato...

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Digestible energy requirements for work and maintenance of horses fed conventional and fat-supplemented diets

Cited by 26 publications

References 7 publications

Effect of partial replacement of oats with sugar beet pulp and maize oil on nutrient utilisation in horses

Effect of partial replacement of oats with sugar beet pulp and maize oil on nutrient utilisation in horses

Exercise response, metabolism at rest and digestibility in athletic horses fed high‐fat oats

Uso de óleo na dieta de eqüinos submetidos ao exercício

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