Digestibility of Fatty Acids in the Gastrointestinal Tract of Dairy Cows Fed with Tallow or Saturated Fats Rich in Stearic Acid or Palmitic Acid
作者:
MartinR. Weisbjerg,
Torben Hvelplund,
ChristianF. Børsting,
期刊:
Acta Agriculturae Scandinavica, Section A — Animal Science
(Taylor Available online 1992)
卷期:
Volume 42,
issue 2
页码: 115-120
ISSN:0906-4702
年代: 1992
DOI:10.1080/09064709209410117
出版商: Taylor & Francis Group
关键词: Digestibility;stearic acid;palmitic acid;tallow;dairy cows
数据来源: Taylor
摘要:
Fatty acid digestibility was studied with five lactating cows fed three different fat sources in a 5 × 5 latin square experiment. The treatments were 500 g of tallow, 500 or 1000 g of saturated fat rich in stearic acid (C18:0) (SARF) or 500 or 1000 g of saturated fat rich in palmitic acid (C16:0) (PARF) per day. The total daily fatty acid intake was about 1100 g in rations with the highest fat inclusion. The fatty acid digestibilities were 76% for tallow, 74 and 64% for 500 and 1000 g SARF, respectively, and 87 and 81% for 500 and 1000 g of PARF, respectively. When compared to fatty acid digestibility for tallow predicted from a model based on literature values, PARF had a higher fatty acid digestibility at both fat intakes, and SARF had a lower fatty acid digestibility, especially at high fat intake.
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