Some aspects of the nutritional requirements of sows: Their relevance in the development of a feeding strategy

Close, W. H.; Cole, D. J. A.

doi:10.1016/0301-6226(86)90053-9

Cited by 10 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Close and Cole (1986) concluded that different weight loss in sows eating approximately the same amount of feed during lactation could be affected by factors such as breed, body composition at first service, differences in body reserves and environmental factors such as housing, temperature and farm management. In this study we found no significant difference in total weight loss or relative weight loss between the two treatments groups.…”

Section: Weight Lossmentioning

confidence: 98%

Ad libitum versus step-up feeding during late lactation: The effect on feed consumption, body composition and production performance in dry fed loose housed sows

et al. 2012

View full text Add to dashboard Cite

Section: Weight Lossmentioning

confidence: 98%

Ad libitum versus step-up feeding during late lactation: The effect on feed consumption, body composition and production performance in dry fed loose housed sows

et al. 2012

View full text Add to dashboard Cite

“…In sows, most of the effects of energy and protein supply on reproductive performance and longevity are associated with extreme (high or low) variations of body weight or fat reserves (Dourmad et al, 1994). This can occur on a short-term basis or as the consequence of small deviations on a long-term basis (Close and Cole, 1986). In normal breeding management, the period of pregnancy seems to be the sole period during which body reserves can be rebuilt.…”

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

View full text Add to dashboard Cite

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.

show abstract

“…Outre la source de fibres et le rang de portée, des variabilités dans les consommations alimentaires ou une mauvaise évaluation de l'énergie nette ingérée peuvent donc également expliquer des différences de résultats. L'énergie ingérée durant la gestation, principalement durant le dernier mois, est un facteur important conditionnant le poids des porcelets à la naissance, la prise de poids foetale en fin de gestation étant directement fonction du niveau d'ingestion maternelle (Close et al 1984, Close et Cole 1986.…”

Section: / Prolificité Des Truies Et Poids Des Porceletsunclassified

Les fibres dans l’alimentation des truies gestantes : effets sur la nutrition, le comportement, les performances et les rejets dans l’environnement

Philippe

Remience

Dourmard³

et al. 2008

INRA Prod. Anim.

View full text Add to dashboard Cite

L’intérêt premier d’alimenter les truies gestantes avec des rations enrichies en fibres (REF) est de les rassasier sans apport excessif d’énergie. Une teneur en fibres de l’ordre de 15-20% de NDF (Neutral Detergent Fibre) permet ainsi aux truies d’adapter leur consommation à leurs besoins, ce qui permet d’envisager une distribution à volonté des aliments, technique qui réduit notablement le coût de l’équipement d’alimentation. L’effet des fibres sur la sensation de satiété est notamment attribuable aux plus grandes quantités consommées, à l’augmentation du temps consacré à l’ingestion et à un ralentissement de la vidange gastrique. L’amélioration du niveau de bien-être des truies résultant du rassasiement se traduit par une réduction de la fréquence des stéréotypies et des agressions. L’inconvénient d’une distribution de REF tient à une diminution, cependant limitée, de la digestibilité de l’énergie associée à une accélération du transit intestinal, une production accrue de méthane lors des fermentations et une diminution de l’accessibilité des enzymes digestives et microbiennes aux composants cellulaires. La valorisation de l’énergie provenant des fibres chez la truie est cependant meilleure que chez le porc en croissance. Pour autant que les apports alimentaires tiennent compte de la réduction de la digestibilité de l’énergie, les performances de reproduction des truies ne sont pas affectées. Au contraire, le développement du volume du tube digestif induit par les REF en cours de gestation permet une augmentation de l’ingestion en début de lactation, favorisant ainsi la production laitière et limitant la mobilisation des réserves corporelles. Au niveau environnemental, le recours aux REF diminue les émissions d’ammoniac mais favorise les émissions de méthane.

show abstract

Some aspects of the nutritional requirements of sows: Their relevance in the development of a feeding strategy

Cited by 10 publications

References 24 publications

Ad libitum versus step-up feeding during late lactation: The effect on feed consumption, body composition and production performance in dry fed loose housed sows

Ad libitum versus step-up feeding during late lactation: The effect on feed consumption, body composition and production performance in dry fed loose housed sows

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

Les fibres dans l’alimentation des truies gestantes : effets sur la nutrition, le comportement, les performances et les rejets dans l’environnement

Contact Info

Product

Resources

About