Etude de l'influence de facteurs alimentaires, sanitaires ou d'exploitation sur la production laitière et les performances de reproduction du bétail laitier. II. Analyse statistique

in Annales de Médecine Vétérinaire (1990), 134

A Field Study of Post-Exercise Values of Blood Biochemical Constituents in Jumping Horses: Relationship with Score, Individual and Event

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (1990), 37(3), 231-239

The variability of the post-exercise values (PEV) of blood lactate and of some other blood constituents were studied in 8 healthy and fit jumpers through 5 national competitions of equal difficulty. The ... [more ▼]

The variability of the post-exercise values (PEV) of blood lactate and of some other blood constituents were studied in 8 healthy and fit jumpers through 5 national competitions of equal difficulty. The effects of factors such as the individual, performance and competition on these PEV were analysed. Venous blood was sampled immediately after the 5 show-jumping contests and was analysed for packed cell volume (PCV), blood lactate, blood glucose (GLU), total plasma protein (TPP), bicarbonate (HCO3-), sodium (Na+), potassium (K+), chloride (Cl-), calcium (Ca2+), serum activities of lactate dehydrogenase (LDH), creatine phosphokinase (CPK), glutamic-oxalacetic transminase (GOT) and gamma glutamyl transferase (gamma GT). PEV of these 13 blood parameters were analysed using a fixed linear model which included the effect of horse, score and competition and their respective interactions. The analysis of the influence of each of the 3 fixed variables showed that (1) there was no relationship between the PEV variations and the score; (2) there were significant (P less than 0.05) variations induced by the competition in Na+, Ca2+, TPP, LDH and GLU, and (3) there were significant interindividual variations as regards Ca2+, TPP, CPK, gamma GT and PCV with P less than 0.05, LDH with P less than 0.01 and blood lactate with P less than 0.001.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

Evaluation of the decision commission 89/610/EEC about reference methods for the determination of residues applied to veal calves treated by anabolic hormones

(1990)

Growth and carcass performance of purebreed Belgian Texel rams tested in station

(1989)

Looking for individual genes of muscle hypertrophy in the pig : preliminary analysis of a F2 of the Piétrain x Large-White cross

(1989)

Effect of duodenal ornithine infusion in cows on milk production and blood plasma constituents at two levels of feeding

in Journal of Animal Physiology & Animal Nutrition (1988), 59

An ornithine solution, corresonding to 36.1 g ornithine/d, or an equivalent blank solution were each continuously infused into the duodenum of two lactating cows of the Friesian breed. The cows were fed ... [more ▼]

An ornithine solution, corresonding to 36.1 g ornithine/d, or an equivalent blank solution were each continuously infused into the duodenum of two lactating cows of the Friesian breed. The cows were fed either on a high energy and high protein diet (110% of energy and protein requirements) or a low energy and low protein diet (75% of requirements). Milk composition and milk yield were recorded, and blood plasma contents of amino acids, glucose, growth hormone (GH) and insulin were analysed. The procedure was repeated 1 year later. Ornithine had no effect on milk yields or blood components when thehigh energy and high protein diets were given. On the contrary, it significantly increased milk, lactose, and fat production with the low energy and low protein diets, while milk protein secretion was slightly affected. The levels of nonessential and essential amino acids in blood plasma were enhanced, except for histidine and methionine. The latter amino acids likely were limiting for milk protein synthesis. An increase in glucose supply in the underfed animals likely occured after ornithine administration, since there was a significant increase of plasma glucose and protein levels and total lactose production. Ornithine infusion increased the GH secretion only when the low energy and low protein diets were given. It was concluded that infusion of the non-casein amino acid ornithine into the duodenum increases milk secretion in underfed cows, and that GH likely is involved in this phenomen. [less ▲]

Estimation of breeding values of Belgian trotters in animal model

(1988)

Estimation of breeding values of cattle in an important country using an animal model

(1987)

Durée de la protection après vaccination de pigeons contre la Paramyxovirose par injection sous-cutanée d'un vaccin inactivé aqueux (Colombovac PMX)

(1985)

Pig breeding in Thailand. Report for the Office of the Board of investment

(1984)