Protein and energy retentions in pregnant and non-pregnant gilts. I. Protein retention

Wilde, Roland De

doi:10.1016/0301-6226(80)90087-1

Cited by 15 publications

(3 citation statements)

References 11 publications

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“…Maternal body protein, unlike body fat, seems little affected during gestation, which could reflect the metabolic adjustments during this period (Lodge, Friend and Wolynetz, 1979 ;De Wilde, 1980a and b). Nevertheless, the protein intake level represents a determinant factor in the deposition of protein and fat in maternal tissues (Duee et aL, 19831. However, even in the case of high intake of energy (30 MJME/d) (Bergmeyer, 1974).…”

Section: Introductionmentioning

confidence: 99%

Effect of feed intake level in late gestation on arterial blood concentrations of energy substrates, insulin and glucagon in the chronically catheterized gilt

Nunes¹,

Duée²,

Pégorier³

et al. 1987

Reprod. Nutr. Dévelop.

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Summary. The aim of the present work was to study, in the unstressed catheterized gilt, While plasma glucagon concentrations are constant whatever the physiological state or the feed intake level, plasma insulin levels progressively decrease in the pregnant gilt.These data are discussed to display some aspects of the adaptation of the maternal metabolism in the gilt in late gestation.Introduction.

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Section: Introductionmentioning

confidence: 99%

Effect of feed intake level in late gestation on arterial blood concentrations of energy substrates, insulin and glucagon in the chronically catheterized gilt

Nunes¹,

Duée²,

Pégorier³

et al. 1987

Reprod. Nutr. Dévelop.

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“…Henry and Etienne (1978) showed from a review of literature that the amount of maternal gain in pregnant sows is highly dependent on energy level fed during gestation. However, results on weight gain composition accord-ing to energy supply are scarce, and most of these were obtained with gilts (De Wilde, 1980;Walach-Janiack et al, 1986).…”

Section: Introductionmentioning

confidence: 99%

Reconstitution of body reserves in multiparous sows during pregnancy: effect of energy intake during pregnancy and mobilization during the previous lactation.

Dourmad

Etienne

Noblet

1996

Journal of Animal Science

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Multiparous Large White sows were used in two experiments to determine the effects of energy intake on the reconstitution of body reserves during pregnancy. In Exp. 1, 21 sows received one of three different energy levels during pregnancy: 7.4, 8.8, or 10.4 Mcal DE/d. In Exp. 2, two energy levels (7.9 and 9.2 Mcal DE/d) were fed to 36 sows that mobilized low or high amounts of body reserves during the previous lactation (6 or 12 pigs per litter, respectively). Nitrogen balances were conducted during five 7-d periods at 11, 32, 53, 82, and 104 d of gestation. All the experimental sows were slaughtered and dissected at the end of pregnancy; 24 control sows were similarly slaughtered at mating in order to estimate composition of BW gain, according to the comparative slaughter technique. In the two experiments, average nitrogen (N) retention increased linearly with energy supply from 9.9 to 14.5 g/d in Exp. 1 (P < .001) and from 10.2 to 12.5 g/d in Exp. 2 (P < .05). Nitrogen retention was not affected by the extent of mobilization of body reserves during the previous lactation in Exp. 2. In both experiments, carcass weight (P < .001), muscle weight (P < .01), and dissectable fat weight (P < .001, Exp. 1; P < .01, Exp. 2) increased with energy supply. We conclude that in high-producing modern multiparous sows, energy supply during gestation is a limiting factor for N retention and muscle weight gain and should be approximately 8,500 kcal DE/d to ensure adequate restoration of body reserves.

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“…Im Schrifttum sind mehrere Publikationen zu finden, die Ergebnisse zum Energie-und Stoffumsatz bei graviden, güsten und laktierenden Sauen enthalten, die mit Hilfe der Methode der Tierkörperanalyse gewonnen wurden (Elsley u.a., 1966;Heap u. Lodge, 1967;O'Grady u.a., 1975;Hovell u.a., 1977;De Wilde, 1980;Kotarbinska, 1983;Walach-Janiak u.a., 1986a und b;Machajew, 1987). Daten zum Vergleich der eigenen Ergebnisse zur chemischen Zusammensetzung von Ganzkörpern bzw.…”

Section: Chemische Zusammensetzung Der Ganzkörper Gravider Güster Ununclassified

Untersuchungen zum energie‐ und stickstoffumsatz von graviden und laktierenden sauen sowie von saugferkeln

Beyer

Jentsch

Hoffmann

et al. 1993

Archiv für Tierernaehrung

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The influence of litter number (1, 2 and 4, age of sows) as well as gestation and lactation stage of sows on the chemical composition and on the quantities of protein and fat of their bodies was investigated. The slaughter of 46 pregnant, 18 non-pregnant and 17 lactating sows were carried out at the 1st, 56th, 84th, 98th, 105th and 113th day of gestation, 113th day of experiment (non-pregnant sows) and 26th day of lactation. The results were related to the sows' energy supply (120, 100 and 80%) with equal supply of protein, vitamins and minerals. Within the tested litter numbers the chemical composition of the bodies was nearly constant during the whole time of gestation and lactation. A good agreement existed for the chemical composition of the sows' bodies of litter number 1 and 2. In comparison to them the bodies of litter number 4 contained more protein and less fat per kg dry matter. The quantities of body protein and fat increased in the gestation and decreased in the lactation period, in each case the quantities of fat exceeded than the quantities of protein. The quantities of body protein increased with higher litter number. The quantities of body fat increased from litter number 1 to 2 and were nearly equal in the sows of litter numbers 1 and 4. Within one litter number the amounts of body protein and fat attained the same level in pregnant, non-pregnant and lactating sows.

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Protein and energy retentions in pregnant and non-pregnant gilts. I. Protein retention

Cited by 15 publications

References 11 publications

Effect of feed intake level in late gestation on arterial blood concentrations of energy substrates, insulin and glucagon in the chronically catheterized gilt

Effect of feed intake level in late gestation on arterial blood concentrations of energy substrates, insulin and glucagon in the chronically catheterized gilt

Reconstitution of body reserves in multiparous sows during pregnancy: effect of energy intake during pregnancy and mobilization during the previous lactation.

Untersuchungen zum energie‐ und stickstoffumsatz von graviden und laktierenden sauen sowie von saugferkeln

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