Impact of Concentrate Level and Stage of Lactation on Fatty Acid Composition in Goat Milk

• Main Authors: Novotná K., Ptáček M., Fantová M., Nohejlová L., Stádník L., Okrouhlá M., Peták Z.
• Format: Article
• Language: English
• Published: Sciendo 2019-09-01
• Series: Scientia Agriculturae Bohemica
• Subjects: goat; milk production; fatty acid profile; milk fat composition
• Online Access: https://doi.org/10.2478/sab-2019-0023

The impact of different amounts of concentrate and stage of lactation on fatty acid profile in milk fat was measured in 30 lactating Nubian goats. The ration included medium-quality hay, grazed pasture and concentrate feed (mashed barley, oats and beet pulp at 1:1:1 wet weight ratios). Half of the goats (group A) received 1.2 kg whereas group B received 1.0 kg of concentrate daily. Milk samples were taken 3 times during lactation. The total amounts of saturated fatty acids (SFA) increased gradually during lactation while polyunsaturated (PUFA) and monounsaturated fatty acids (MUFA) decreased. Group A had lower SFA but higher concentrations of MUFAs and PUFAs at all 3 samplings. Nubian goats fed more concentrate had FA ratios presumably more suitable for consumers of milk and milk products.