Pumpkin (Cucurbita maxima D.) Silage as a Feed that Improves Nutritional Properties of Cow’s Milk
نویسندگان
1 Department of Animal Nutrition and Biotechnology, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland.
2 Department of Animal Nutrition and Biotechnology, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland.
3 Department of Animal Nutrition and Biotechnology, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland.
4 Department of Animal Nutrition and Biotechnology, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland.
5 Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Poland.
doi
چکیده
The study was performed with 40 Simmental cows divided into four groups (treatments). The group I received diet with grass silage, maize silage, and concentrate. Group II was fed similar as group I plus 400 mg d-1 cow-1 of β-carotene. In group III, 40% maize silage DM was replaced with pumpkin silage to ensure a 400 mg higher β-carotene intake compared to the group I. In group IV, 60% of maize silage DM was replaced with pumpkin silage without balancing β-carotene. Milk samples were collected at 4 and 8 weeks of experiment. The milk was analyzed for the basic composition, carotenoids, Total Antioxidant Status (TAS), and composition of fatty acids. In both measurements, the highest content of α-carotene, β-carotene, lutein, violaxanthin were in the milk of group IV, and the lowest in group I. In the milk groups III and IV, higher content of PUFA, including n-3 PUFA, was found in successive samplings. In all samplings, milk TAS in group I was significantly lower compared to groups III and IV.
