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Article

Effects of Breed and Stage of Lactation on Milk Fatty Acid Composition of Italian Goat Breeds

1
Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, 35020 Legnaro (PD), Italy
2
Council for Agricultural Research and Agricultural Economy Analysis—Research Centre for Animal Production and Aquaculture, 85051 Bella Muro (PZ), Italy
3
Department of Veterinary Medicine and Animal Production (DMVPA), University of Naples Federico II, Naples, 80137 Napoli, Italy
*
Author to whom correspondence should be addressed.
Animals 2019, 9(10), 764; https://doi.org/10.3390/ani9100764
Received: 19 September 2019 / Revised: 30 September 2019 / Accepted: 1 October 2019 / Published: 3 October 2019
(This article belongs to the Section Small Ruminants)
Milk fatty acid composition affects human health and dairy products flavor. In particular, some saturated fatty acids increase the risk of cardiovascular diseases, whereas conjugated linoleic acid inhibits carcinogenesis and reduces atherosclerosis and diabetes. Moreover, a greater amount of some short chain fatty acids increase the goaty flavor of dairy products. The objective of this study was to evaluate the breed and week of lactation effects on milk fatty acid profile of 5 Italian local goat breeds and a cosmopolitan breed reared in the same farm. Results showed that the fatty acid profile was mainly affected by the week of lactation. Saturated fatty acids were abundant in early lactation and unsaturated fatty acids were abundant in late lactation. Local goat breeds produced milk with lower concentration of saturated fatty acids than the cosmopolitan breed. This study may contribute to valorize milk of Italian local goat breeds which seems to have a healthier profile than milk of the cosmopolitan breed.
Fatty acid (FA) profile plays an important role on human health and on sensory quality of dairy products. There is few information about breed influence on milk FA profile of local goat breeds. This study aimed to characterize and compare the milk FA profile of 5 local endangered goat breeds (Garganica, Girgentana, Jonica, Maltese, and Mediterranean Red) and a cosmopolitan breed (Saanen) reared in the same farm during a complete lactation. A total of 252 milk samples were collected monthly from 42 goats (7 goats per breed) and analyzed for gross composition and FA profile. Individual FA was determined using gas-chromatography. Data were analyzed using a mixed model with repeated measures with breed and week of lactation as fixed effects. Results showed that the FA profile was significantly affected by week of lactation and only few FA by breed effect (p < 0.05). Overall, the main differences were found between Saanen and local breeds. This study contributed to the characterization of goat milk FA profile, and it may be of interest for the valorization of milk from local goat breeds which seem to have a healthier profile than milk of the cosmopolitan breed. View Full-Text
Keywords: atherogenicity index; conjugated linoleic acids; desaturation index; local goat breeds; fatty acids atherogenicity index; conjugated linoleic acids; desaturation index; local goat breeds; fatty acids
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MDPI and ACS Style

Currò, S.; Manuelian, C.L.; De Marchi, M.; Claps, S.; Rufrano, D.; Neglia, G. Effects of Breed and Stage of Lactation on Milk Fatty Acid Composition of Italian Goat Breeds. Animals 2019, 9, 764. https://doi.org/10.3390/ani9100764

AMA Style

Currò S, Manuelian CL, De Marchi M, Claps S, Rufrano D, Neglia G. Effects of Breed and Stage of Lactation on Milk Fatty Acid Composition of Italian Goat Breeds. Animals. 2019; 9(10):764. https://doi.org/10.3390/ani9100764

Chicago/Turabian Style

Currò, Sarah, Carmen L. Manuelian, Massimo De Marchi, Salvatore Claps, Domenico Rufrano, and Gianluca Neglia. 2019. "Effects of Breed and Stage of Lactation on Milk Fatty Acid Composition of Italian Goat Breeds" Animals 9, no. 10: 764. https://doi.org/10.3390/ani9100764

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