FACTORS AFFECTING SOMATIC-CELL COUNTS IN GOAT MILK

被引：66

作者：

LERONDELLE, C

RICHARD, Y

ISSARTIAL, J

机构：

[1] Laboratoire Associé INRA Pathologie des Petits Ruminants, Ecole Vétérinaire de Lyon, 69280 Marcy l'Etoile, BP

来源：

SMALL RUMINANT RESEARCH | 1992年 / 8卷 / 1-2期

关键词：

D O I：

10.1016/0921-4488(92)90014-U

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Many factors were found to affect cell numbers: coagulase negative staphylococci or CAEV mammary infection, but also vaccination or alimentary stress. Out of 181 halves studied, 4 (2%) were infected by Staphylococcus aureus, 41 (23%) by coagulase negative staphylococci and 136 (75%) were not infected. Somatic cell counts of 94 goats (two herds) were studied during four months (first to fifth month of lactation). Thc arithmetic mean cell counts for milk samples from halves infected with coagulase negative staphylococci and non-infected halves were respectively 1.04 X 10(6) and 0.52 X 10(6) cells/ml. From second lactation and more, CAEV infected halves had cell counts double those of uninfected halves (P < 0.01). About 8% of halves infected by coagulase negative staphylococci and 28% infected by CAEV had somatic cell counts lower than 0.5 X 10(6) cells/ml. Vaccination and acidosis induced an increase of cell counts in milk. A threshold of 0.8 x 10(6) cells/ml did not seem sufficiently discriminating for diagnosis of mammary infections. The weak increase of cell numbers due to CAEV infection and the susceptibility of goat udders to various stress must be taken into account before using cell count as diagnostic of mammary infections.

引用

页码：129 / 139

页数：11

共 19 条

[1]

Dawson, Caprine arthritis encephalitis, In Practice, pp. 8-11, (1987)

[2]

Dulin, Paape, Schultze, Weinland, Effect of parity, stage of lactation, and intramammary infection on concentration of somatic cells and cytoplasmic particles in goat milk, J. Dairy Sci., 66, pp. 2426-2433, (1983)

[3]

Hinckley, Revision of the somatic cell count standard for goat milk, Dairy, Food and Environmental Sanitation, 10, pp. 548-549, (1990)

[4]

Hunter, Microflora and somatic cell content of goat milk, Vet. Rec., 114, pp. 318-320, (1984)

[5]

IDF, Recommended methods for somatic cell counting in milk, International Dairy Federation Doc. 168, pp. 3-19, (1979)

[6]

Kennedy-Stoskopf, Narayan, Strandberg, The mammary gland as a target organ for infection with caprine arthritis encephalitis virus, J. Comp. Path., 95, pp. 609-617, (1985)

[7]

Lerondelle, Fleury, Vialard, La glande mammaire: organe cible de l'infection par le virus de l'arthrite et de l'encéphalite caprine, Ann. Rech. Vet., 20, pp. 57-64, (1989)

[8]

Lerondelle, Poutrel, Characteristics of non-clinical mammary infections of goats, Ann. Rech. Vet., 15, pp. 105-112, (1984)

[9]

Manser, Prevalence, causes and laboratory diagnosis of subclinical mastitis in the goat, Vet. Rec., 118, pp. 552-554, (1986)

[10]

Mellenberger, Somatic cell counts in goat's milk, Proc. Annu. Meet. Natl. Mastitis Council, 18, pp. 41-43, (1979)

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