Soybean oil, a linoleic acid source, in lamb diets: metabolic, feeding behavior, and ruminal parameters
<p>The objective of this study was to evaluate the effects of including soybean oil (SO) in the diet of feedlot lambs on metabolic, behavioral, and ruminal parameters. Five rumen-cannulated lambs (average body weight of 47.76 <span class="inline-formula">±</spa...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2025-02-01
|
| Series: | Archives Animal Breeding |
| Online Access: | https://aab.copernicus.org/articles/68/77/2025/aab-68-77-2025.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | <p>The objective of this study was to evaluate the effects of including soybean oil (SO) in the diet of feedlot lambs on metabolic, behavioral, and ruminal parameters. Five rumen-cannulated lambs (average body weight of 47.76 <span class="inline-formula">±</span> 7.14 kg at approximately 15 months of age) were distributed in a 5 <span class="inline-formula">×</span> 5 Latin square design. Their diets consisted of increasing levels of SO inclusion: 0, 30, 60, 90, and 120 g kg<span class="inline-formula"><sup>−1</sup></span> of dry matter (DM). Each period lasted 21 d, with 14 d for adaptation and 7 d for data collection. The data were analyzed using linear and quadratic polynomial contrasts, except for the ruminal fermentation parameters and plasma glucose, which were analyzed using repeated measures over time. There was a linear reduction in DM (<span class="inline-formula"><i>P</i></span> <span class="inline-formula">=</span> 0.019) and crude protein (<span class="inline-formula"><i>P</i></span> <span class="inline-formula">=</span> 0.007) intake as well as a linear decrease in non-fibrous carbohydrate intake (<span class="inline-formula"><i>P</i></span> <span class="inline-formula"><</span> 0.001) and digestibility (<span class="inline-formula"><i>P</i></span> <span class="inline-formula">=</span> 0.039) due to increased SO inclusion levels. The intake of ether extract increased linearly (<span class="inline-formula"><i>P</i></span> <span class="inline-formula"><</span> 0.001), while its digestibility showed a quadratic relationship (<span class="inline-formula"><i>P</i></span> <span class="inline-formula"><</span> 0.001) with the inclusion of SO in the diet. Feeding behavior was not altered by SO inclusion, except for rumination efficiency, which decreased linearly (<span class="inline-formula"><i>P</i></span> <span class="inline-formula"><</span> 0.001). There was a linear reduction in nitrogen intake (<span class="inline-formula"><i>P</i></span> <span class="inline-formula">=</span> 0.007), while no influence (<span class="inline-formula"><i>P</i></span> <span class="inline-formula">></span> 0.05) of SO inclusion was observed on ruminal fermentation parameters, except for a linear decrease in the concentration of rumen ammonia nitrogen (<span class="inline-formula"><i>P</i></span> <span class="inline-formula">=</span> 0.023). The use of SO in diets for feedlot lambs should be approached with caution, as it can reduce DM intake, which may lead to decreased animal performance; however, further studies are needed to determine the effects on the productive cost and performance.</p> |
|---|---|
| ISSN: | 0003-9438 2363-9822 |