Effect of feed intake level on ileal digestibilities of crude protein and amino acids in diets for piglets
- Publication Type
- Journal contribution (peer reviewed)
- Authors
- Goerke M, Eklund M, Sauer N, Rademacher M, Piepho H-P, Börner C and Mosenthin R
- Year of publication
- 2012
- Published in
- Journal of the Science of Food and Agriculture
- Band/Volume
- 92/
- DOI
- 10.1002/jsfa.4692
- Page (from - to)
- 1261-1266
- Keywords
- apparent ileal digestibility, feed intake level, piglet, standardized ileal digestibility
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-layout-grid-align: none;"><span>BACKGROUND: The study was conducted to determine the effect of graded levels of feed intake on apparent (AID) and standardized (SID) ileal digestibilities of crude protein (CP) and amino acids (AA) in diets for piglets. The piglets were surgically fitted with simple T-cannulas at the distal ileum. The cornstarch-casein-soybean meal-based diets were fed at three graded levels of feed intake corresponding to 30, 45 and 60 g kg</span><sup><span>−</span></sup><sup><span>1</span></sup><span> body weight (BW) per day.</span></p> <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-layout-grid-align: none;"><span>RESULTS: The AID and SID of most AA were quadratically affected by the feed intake level (<i>P </i></span><span>≤ </span><span>0<i>.</i>05). Initially, both AID and SID of most AA increased up to 1.9 percentage units as the feed intake level was increased from 30 to 45 g kg</span><sup><span>−</span></sup><sup><span>1</span></sup><span> BW. Thereafter, these AID and SID values decreased by 2.6 and 2.7 percentage units, respectively, as the feed intake level was further increased from 45 to 60 g kg</span><sup><span>−</span></sup><sup><span>1</span></sup><span> BW.</span></p> <p><span>CONCLUSION: Because the voluntary feed intake is highly variable in piglets after weaning, comparison of ileal AA digestibilities between and within studies may be confounded by variations in feed intake level. Thus, when designing digestibility studies with piglets, a standardization of feed intake should be taken into consideration.</span></p>