True phosphorus digestibility of camelina meal in broiler chickens

Pekel A. Y., Adedokun S. A., Adeola O.

CANADIAN JOURNAL OF ANIMAL SCIENCE, vol.98, no.1, pp.194-203, 2018 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 98 Issue: 1
  • Publication Date: 2018
  • Doi Number: 10.1139/cjas-2017-0075
  • Journal Name: CANADIAN JOURNAL OF ANIMAL SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.194-203
  • Istanbul University-Cerrahpasa Affiliated: No

Abstract

This study was conducted to determine the true digestibility of phosphorus (P) in two different cold-pressed camelina meals using regression method. Six semi-purified experimental diets containing 120, 240, or 360 g of camelina meal (CM) per kilogram from camelina meal 1 (CM1) and camelina meal 2 (CM2) were formulated. A total of 384 male Ross 708 broilers were allocated to six dietary treatments with eight cages per treatment from day 18 to day 23 post hatching in a randomized complete block design. The result showed that body weight gain, gain:feed ratio, ileal dry matter (DM) digestibility, DM and nitrogen (N) retention decreased (linear, P < 0.001) with increasing levels of CM1 and CM2. Apparent ileal digestibility of P and Ca decreased (P < 0.01) with increasing dietary levels of CM. From the regressions of ileal and excreta P output against intake of P from CM1 or CM2, true ileal P digestibility and true P retention were determined to be 35% and 15%, and 24% and 21% for CM1, and CM2, respectively. Results from the current experiment showed that high level of dietary CM inclusion resulted in a significant reduction in utilization of P in diets, and there was a considerable range in P utilization between the two camelina meal samples.

This study was conducted to determine the true digestibility of phosphorus (P) in two different cold-pressed camelina meals using regression method. Six semi-purified experimental diets containing 120, 240, or 360 g of camelina meal (CM) per kilogram from camelina meal 1 (CM1) and camelina meal 2 (CM2) were formulated. A total of 384 male Ross 708 broilers were allocated to six dietary treatments with eight cages per treatment from day 18 to day 23 post hatching in a randomized complete block design. The result showed that body weight gain, gain: feed ratio, ileal dry matter (DM) digestibility, DM and nitrogen (N) retention decreased (linear, P < 0.001) with increasing levels of CM1 and CM2. Apparent ileal digestibility of P and Ca decreased (P < 0.01) with increasing dietary levels of CM. From the regressions of ileal and excreta P output against intake of P from CM1 or CM2, true ileal P digestibility and true P retention were determined to be 35% and 15%, and 24% and 21% for CM1, and CM2, respectively. Results from the current experiment showed that high level of dietary CM inclusion resulted in a significant reduction in utilization of P in diets, and there was a considerable range in P utilization between the two camelina meal samples.