Relationships between milk characteristics and somatic cell score in milk from primiparous browsing goats

Vacca, Giuseppe Massimo; Dettori, Maria Luisa; Carcangiu, Vincenzo; Rocchigiani, Angela Maria; Pazzola, Michele

doi:10.1111/j.1740-0929.2010.00774.x

Cited by 17 publications

(16 citation statements)

References 17 publications

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“…Todaro et al (2005) reported a mean value of 426 000 cells/mL for Girgentana goat. Similar mean values of SCC (log 10 ) were reported by Vacca et al (2010) in local Sarda goat breed that, as Girgentana, is reared in a pastoral system, hand-milked and in the absence of modern husbandry techniques. High SCC in milk was associated with subclinical mastitis (Leitner et al 2004) and it leads to modification of main milk components with negative effects on cheese manufacture.…”

Section: Milk Yield and Gross Compositionsupporting

confidence: 63%

Population genetic structure and milk production traits in Girgentana goat breed

et al. 2017

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Abstract. The aim of this work was to evaluate the genetic status of the Girgentana goat, an endangered breed from Sicily (Italy), using microsatellite markers. Furthermore, as the main purpose of the Girgentana breed is milk production, quantitative milk traits were investigated, including fatty acid profile. Molecular data from CSN1S1, CSN2, CSN1S2, and CSN3 casein genes were also used to infer haplotypes. A total of 264 individuals were collected. Samples of Maltese (n = 41) and Derivata di Siria (n = 33) goat breeds were also used to understand the genetic relationship among breeds. Testday records for milk production were collected to determine daily milk yield, fat, protein, casein, lactose, and somatic cell count. Individual milk samples were also collected for fatty acid extraction. Wright's statistics, gene flow, Nei genetic distance, factorial correspondence analysis, and Bayesian assignment test showed the existence of genetic variability and differentiation among breeds. The AMOVA results indicated that 89.96% of the total variance was partitioned within populations. The Girgentana breed appears to have a subdivided population, and has not experienced a recent bottleneck. A high variability in milk yield was observed. Mean morning milk yield was 1448 AE 404 g, with 4.30 AE 0.87% and 3.72 AE 0.44% of fat and protein percentages, respectively. The average somatic cell count found in Girgentana goat milk was higher than the threshold of 1 500 000 cells/mL advised in Europe for fresh milk. Gross milk and fatty acid composition were similar to that reported in the literature for other local goat breeds.

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Section: Milk Yield and Gross Compositionsupporting

confidence: 63%

Population genetic structure and milk production traits in Girgentana goat breed

et al. 2017

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“…Hadjipanayiotou () and Vacca et al . () also reported a direct relationship between these parameters, although the correlation coefficients were very low. In agreement with Vacca et al .…”

Section: Resultsmentioning

confidence: 93%

“…Vacca et al . () reported that the urea content in goat milk shows a bell‐shaped pattern, with the highest values being observed at intermediate points of the lactation period. According to this, it would seem that an increase in the urea concentration would occur during the first few hours after parturition, differing from what was observed in our study.…”

Section: Resultsmentioning

confidence: 99%

Effect of postpartum time and season on the physicochemical characteristics of Murciano‐Granadina goat colostrum

Ruiz

Seseña

Rieiro

et al. 2014

Int J of Dairy Tech

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Changes in the physicochemical composition of Murciano-Granadina goat colostrum were studied with postpartum time and season. Samples that were taken immediately after partum showed the best characteristics, with the highest concentrations of proteins, solids, urea and immunoglobulin G (IgG). Samples obtained in the spring showed the highest concentration of total IgG at all postpartum times assayed. Exhaustive statistical analysis showed that the physicochemical composition of the colostrum was greatly affected by the postpartum time and only slightly affected by the season. The high protein and total IgG concentrations make goat colostrum an interesting product for uses beyond the traditional ones.

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“…We hypothesize that the presence of CSN1S1 A in the Sarda goat may be due to the genetic influence of the Maltese breed, which for many years has been used to increase Sarda goat milk production (Vacca et al . ). The occurrence of the null CSN1S1 01 and N alleles, although in low percentage, enriches the genetic potential of the Sarda goat.…”

Section: Discussionmentioning

confidence: 97%

Goat casein genotypes are associated with milk production traits in the Sarda breed

et al. 2014

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The aim of the current work was to analyze, in the Sarda breed goat, genetic polymorphism within the casein genes and to assess their influence on milk traits. Genetic variants at the CSN1S1, CSN2, CSN1S2 and CSN3 gene loci were investigated using PCR-based methods, cloning and sequencing. Strong alleles prevailed at the CSN1S1 gene locus and defective alleles also were revealed. Null alleles were evidenced at each calcium-sensitive gene locus. At the CSN3 gene locus, we observed a prevalence of the CSN3 A and B alleles; the occurrence of rare alleles such as CSN3 B'', C, C', D, E and M; and the CSN3 S allele (GenBank KF644565) described here for the first time in Capra hircus. Statistical analysis showed that all genes, except CSN3, significantly influenced milk traits. The CSN1S1 BB and AB genotypes were associated with the highest percentages of protein (4.41 and 4.40 respectively) and fat (5.26 and 5.34 respectively) (P < 0.001). A relevant finding was that CSN2 and CSN1S2 genotypes affected milk protein content and yield. The polymorphism of the CSN2 gene affected milk protein percentage with the highest values recorded in the CSN2 AA goats (4.35, at P < 0.001). The CSN1S2 AC goats provided the highest fat (51.02 g/day) and protein (41.42 g/day) (P < 0.01) production. This information can be incorporated into selection schemes for the Sarda breed goat.

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Relationships between milk characteristics and somatic cell score in milk from primiparous browsing goats

Cited by 17 publications

References 17 publications

Population genetic structure and milk production traits in Girgentana goat breed

Population genetic structure and milk production traits in Girgentana goat breed

Effect of postpartum time and season on the physicochemical characteristics of Murciano‐Granadina goat colostrum

Goat casein genotypes are associated with milk production traits in the Sarda breed

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