Influence of Feeding Linseed on SCD Activity in Grazing Goat Mammary Glands
Department of Veterinary Medicine and Animal Production, University of Napoli Federico II, 80100 Napoli, Italy
Department of Veterinary Science, University of Messina, 98122 Messina, Italy
Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy
Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Animals 2019, 9(10), 786; https://doi.org/10.3390/ani9100786
Received: 14 September 2019 / Revised: 5 October 2019 / Accepted: 7 October 2019 / Published: 11 October 2019
(This article belongs to the Special Issue Selected Papers of the Italian Society of Sheep and Goat Pathology and Production (SIPAOC) Meetings)
The effect of linseed feeding on stearoyl-CoA desaturase (SCD) activity was studied in dairy goats. SCD acts on the synthesis of milk conjugated linoleic acids (CLAs), considered highly important for human health. Linseed feeding significantly changed SCD activity, milk fat, and fatty acid profile; in particular, CLAs were higher in treated animals with potential benefits for human health. Because of the increasing care of consumers for the healthy aspects of foods, results increase the knowledge of beneficial effects of goat milk due to animal nutrition.
The effects of linseed feeding on the stearoyl-CoA desaturase (SCD) activity were evaluated on grazing dairy goats divided into two homogeneous groups (C, control, and L, treated) fed the same amount of concentrate which, for group L was supplemented with linseed. Milk yield was unaffected by the treatment. Group L showed significantly higher milk fat (4.10% vs 2.94%, p < 0.01) than group S. Within milk fatty acids, group C showed significantly higher levels of saturated fatty acids and lower values of mono-unsaturated and polyunsaturated fatty acids. In group L, total CLAs were higher than in group S (0.646% vs 0.311%; p < 0.01) mainly because of the differences in CLA cis9 trans 11 (0.623% vs 0.304%; p < 0.01). In treated animals, SCD activity, measured as cis9 C14:1/C14:0, was lower than in the control group, mainly in July and August.