Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats

Traditionally, in Mediterranean areas the goat population was composed of autochthonous breeds with strong milk production seasonality. In the last decades, high productive alpine breeds were introduced together with more widespread out-of-season milk production practices. This study is a large-scal...

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Main Authors: Paola Scano, Pierluigi Caboni
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Dairy
Subjects:
Online Access:https://www.mdpi.com/2624-862X/3/3/38
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author Paola Scano
Pierluigi Caboni
author_facet Paola Scano
Pierluigi Caboni
author_sort Paola Scano
collection DOAJ
description Traditionally, in Mediterranean areas the goat population was composed of autochthonous breeds with strong milk production seasonality. In the last decades, high productive alpine breeds were introduced together with more widespread out-of-season milk production practices. This study is a large-scale survey on the seasonal variations of the main compositional characteristics of goat milk obtained from Sarda and Saanen breeds reared on the Mediterranean island of Sardinia (Italy). Analysis of data indicated that milk from the Sarda breed was significantly richer, at <i>p</i> < 0.001, in protein, fat, and lactose, and had a lower urea mean content than Saanen. Throughout the year, fluctuations of mean contents of the milk parameters were similar for the two groups of goats, indicating that, besides genetic intrinsic differences, climate and herbage growth influenced the Sarda as well as the Saanen goats. During the summer, milk from Saanen showed a marked drop in fat and protein contents, with 21% of samples showing a fat-to-protein ratio <1. No significant differences were found for the somatic cell count; however, the Sarda breed showed a higher bacterial count, suggesting improper milk handling and/or storage equipment more frequently encountered in extensive and semi-extensive farm systems.
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spelling doaj.art-5e45a94da21e4b51aabcacb6e61d19192023-11-23T15:46:28ZengMDPI AGDairy2624-862X2022-07-013352854010.3390/dairy3030038Seasonal Variations of Milk Composition of Sarda and Saanen Dairy GoatsPaola Scano0Pierluigi Caboni1Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, ItalyDepartment of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, ItalyTraditionally, in Mediterranean areas the goat population was composed of autochthonous breeds with strong milk production seasonality. In the last decades, high productive alpine breeds were introduced together with more widespread out-of-season milk production practices. This study is a large-scale survey on the seasonal variations of the main compositional characteristics of goat milk obtained from Sarda and Saanen breeds reared on the Mediterranean island of Sardinia (Italy). Analysis of data indicated that milk from the Sarda breed was significantly richer, at <i>p</i> < 0.001, in protein, fat, and lactose, and had a lower urea mean content than Saanen. Throughout the year, fluctuations of mean contents of the milk parameters were similar for the two groups of goats, indicating that, besides genetic intrinsic differences, climate and herbage growth influenced the Sarda as well as the Saanen goats. During the summer, milk from Saanen showed a marked drop in fat and protein contents, with 21% of samples showing a fat-to-protein ratio <1. No significant differences were found for the somatic cell count; however, the Sarda breed showed a higher bacterial count, suggesting improper milk handling and/or storage equipment more frequently encountered in extensive and semi-extensive farm systems.https://www.mdpi.com/2624-862X/3/3/38goat milk seasonalitygoat milk reversion syndromeSarda goatSaanen goatgoat milk ureagoat farming systems
spellingShingle Paola Scano
Pierluigi Caboni
Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats
Dairy
goat milk seasonality
goat milk reversion syndrome
Sarda goat
Saanen goat
goat milk urea
goat farming systems
title Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats
title_full Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats
title_fullStr Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats
title_full_unstemmed Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats
title_short Seasonal Variations of Milk Composition of Sarda and Saanen Dairy Goats
title_sort seasonal variations of milk composition of sarda and saanen dairy goats
topic goat milk seasonality
goat milk reversion syndrome
Sarda goat
Saanen goat
goat milk urea
goat farming systems
url https://www.mdpi.com/2624-862X/3/3/38
work_keys_str_mv AT paolascano seasonalvariationsofmilkcompositionofsardaandsaanendairygoats
AT pierluigicaboni seasonalvariationsofmilkcompositionofsardaandsaanendairygoats