Growth performance and nutrient digestibility in pigs fed wheat distillers dried grains with solubles-based diets supplemented with a multicarbohydrase enzyme1
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Notice bibliographique
Résumé
The objective was to investigate the effect of supplementing a wheat distillers dried grains with solubles (wheat DDGS)-based diet with carbohydrase enzyme blends on growth performance and nutrient digestibilities in growing and finishing pigs. In Exp. 1, 48 pigs with a BW of 36.5 +/- 1.03 kg (mean +/- SD) were randomly assigned to 24 pens (2 pigs per pen) on the basis of sex and BW, and pigs were randomly allocated to experimental diets (6 pens per diet). Dietary treatments were a positive control (PC) formulated to meet or exceed NRC (1998) nutrient requirements and a negative control (NC) with DE and Lys reduced by 4 and 5%, respectively, from the PC diet and fed without or with an enzyme blend at 2 levels. Level 1 enzyme supplied 2,600 U of xylanase, 1,200 U of beta-glucanase, and 1,300 U of cellulase per kg of diet; level 2 enzyme provided twice the activities for each enzyme in level 1 per kilogram of diet. Chromic oxide was used as an indigestible marker. Pigs fed the NC diet had less (P < 0.05) ADG than those fed the PC diet. Supplementing the NC diet with enzyme blends linearly increased ADG (P < 0.01). The ADFI was not affected by dietary treatment. The PC diet had greater (P = 0.04) G:F compared with the NC diet, but not the enzyme-supplemented diets. Pigs fed the PC diet had greater (P < 0.01) digestibilities of N, GE, and ether extract compared with those fed the NC diet. Addition of level 2 enzyme to the NC diet improved (P < 0.05) digestibilities of DM, N, GE, and ether extract to levels similar (P > 0.05) to those fed the PC diet. In Exp. 2, 4 ileal cannulated barrows (80.8 kg of BW; SD = 0.65) were allotted to 4 diets in a 4 x 4 Latin square design with a 2 x 2 factorial arrangement of treatments. Experimental diets contained 15 or 30% wheat DDGS and were fed without or with enzyme addition. The enzyme supplement supplied 2,200 U of xylanase, 1,100 U of beta-glucanase, and 1,200 U of cellulase per kg of diet. Apparent ileal digestibilities (AID) of DM, OM, and energy in enzyme-supplemented diets were greater (P < 0.05) than in unsupplemented diets. There was an interaction effect (P < 0.05) of wheat DDGS inclusion level and enzyme supplementation on AID of DM and Ser. Enzyme supplementation improved (P < 0.05) AID of DM in the diet with 30% wheat DDGS but not 15% wheat DDGS. The results shows that multienzyme supplementation of 30% wheat DDGS-based diet improved growth performance and apparent total tract digestibility of DM, N, GE, and crude fiber in growing pigs and AID of nutrients in finishing pigs.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle