Effet d'un apport postruminal d'énergie ou d'énergie et de protéines sur la prise alimentaire chez le veau ruminant

Guilhermet, R.; Coroller, J. Y.; Toullec, R.; Beaufils,; Gauchet, P.

doi:10.1051/rnd:19800908

Cited by 1 publication

(2 citation statements)

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“…Thus a large part of the liquid supplement by-passed the rumen, in agreement with the results of Guilhermet, Patureau-Mirand and Toullec (1976) and Guilhermet, Coroller and Toullec (1980).…”

Section: Introductionsupporting

confidence: 79%

“…When the animal is ruminant, solid food remains in the rumen where it is fermented by the microflora before passing into the abomasum. However, the reflex of oesophageal groove closure in weaned calves can be maintained and the rumen by-passed when a part of the diet is given in liquid form (Guilhermet, Patureau-Mirand and Toullec, 1976 ;Guilhermet, Coroller and Toullec, 1980 (Michel, 1973). All animals of a same group were slaughtered on the same day ; slaughter ages were chosen so as to obtain similar mean carcass weights in the three groups (table 2).…”

Section: Introductionmentioning

confidence: 99%

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Enzyme potentialities of the abomasum and pancreas of the calf. II. — Effects of weaning and feeding a liquid supplement to ruminant animals

Guilloteau¹,

Corring²,

Toullec³

et al. 1985

Reprod. Nutr. Dévelop.

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Weaning caused a decrease in the chymosin content and an increase in the pepsin content of the abomasum. The amount of chymosin per kg of carcass was on the average 2.8-fold lower and that of pepsin 1.9-fold higher in groups S and SL than in group L. The amount of pepsin tended to be higher in group S than in group SL, but only the difference observed (36 %) for the total amount was significant.In group S, the pancreata showed more chymotrypsin, trypsin and amylase activities but less lipase activity than in group L ; the observed differences in these activities per kg of carcass were 32, 49, 70 and 24 %, respectively. The activities of group SL were lower than those of group L for trypsin, chymotrypsin and lipase but higher for amylase (17, 12, 44 and 18 %, respectively). Group SL exhibited lower activities than group S (55, 67, 16 and 44 %, respectively, for trypsin, chymotrypsin, lipase and amylase).Weaning appeared to induce large changes in abomasal and pancreatic enzyme potentialities which exhibited patterns similar to the variations in the amounts of substrate intake. In our experimental conditions, giving a liquid supplement to ruminant calves had a depressive effect on the activities of the enzymes (except chymosin), in the pancreas and the abomasum.Introduction.

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Section: Introductionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%