The effect of bacterial infections of the udder on the yield and composition of cow's milk
The effect of bacterial infections, produced by infusions of Streptococcus dysgalactiae and of Staphylococcus pyogenes into one quarter of the udder, on milk yield and composition in heifers was investigated. After a quarter became infected there was invariably a decrease in the yield of milk and in the concentrations of lactose and potassium, while there was an increase in those of sodium, chloride and non-casein proteins. These effects persisted into the 2nd lactation if the infection was not eliminated. If the infection was eliminated during the 1st lactation or during the dry period before 2nd calving there was a complete recovery in the composition of the milk in the 2nd lactation, but the recovery in milk yield was not complete
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198
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| Subjects: | MASTITIS, PRODUCCION DE LECHE, SALUD ANIMAL, PERDIDAS, CONTROL DE ENFERMEDADES, |
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KOHA-OAI-BVE:437362020-02-03T21:07:15ZThe effect of bacterial infections of the udder on the yield and composition of cow's milk 130848 Weelock, J.U. 113209 Rook, J.A.F. 98863 Neave, F.K. 62888 Dodd, F.H. 198 The effect of bacterial infections, produced by infusions of Streptococcus dysgalactiae and of Staphylococcus pyogenes into one quarter of the udder, on milk yield and composition in heifers was investigated. After a quarter became infected there was invariably a decrease in the yield of milk and in the concentrations of lactose and potassium, while there was an increase in those of sodium, chloride and non-casein proteins. These effects persisted into the 2nd lactation if the infection was not eliminated. If the infection was eliminated during the 1st lactation or during the dry period before 2nd calving there was a complete recovery in the composition of the milk in the 2nd lactation, but the recovery in milk yield was not completeThe effect of bacterial infections, produced by infusions of Streptococcus dysgalactiae and of Staphylococcus pyogenes into one quarter of the udder, on milk yield and composition in heifers was investigated. After a quarter became infected there was invariably a decrease in the yield of milk and in the concentrations of lactose and potassium, while there was an increase in those of sodium, chloride and non-casein proteins. These effects persisted into the 2nd lactation if the infection was not eliminated. If the infection was eliminated during the 1st lactation or during the dry period before 2nd calving there was a complete recovery in the composition of the milk in the 2nd lactation, but the recovery in milk yield was not completeMASTITISPRODUCCION DE LECHESALUD ANIMALPERDIDASCONTROL DE ENFERMEDADESJournal of Dairy Research (RU) |
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MASTITIS PRODUCCION DE LECHE SALUD ANIMAL PERDIDAS CONTROL DE ENFERMEDADES MASTITIS PRODUCCION DE LECHE SALUD ANIMAL PERDIDAS CONTROL DE ENFERMEDADES |
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MASTITIS PRODUCCION DE LECHE SALUD ANIMAL PERDIDAS CONTROL DE ENFERMEDADES MASTITIS PRODUCCION DE LECHE SALUD ANIMAL PERDIDAS CONTROL DE ENFERMEDADES 130848 Weelock, J.U. 113209 Rook, J.A.F. 98863 Neave, F.K. 62888 Dodd, F.H. The effect of bacterial infections of the udder on the yield and composition of cow's milk |
| description |
The effect of bacterial infections, produced by infusions of Streptococcus dysgalactiae and of Staphylococcus pyogenes into one quarter of the udder, on milk yield and composition in heifers was investigated. After a quarter became infected there was invariably a decrease in the yield of milk and in the concentrations of lactose and potassium, while there was an increase in those of sodium, chloride and non-casein proteins. These effects persisted into the 2nd lactation if the infection was not eliminated. If the infection was eliminated during the 1st lactation or during the dry period before 2nd calving there was a complete recovery in the composition of the milk in the 2nd lactation, but the recovery in milk yield was not complete |
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| topic_facet |
MASTITIS PRODUCCION DE LECHE SALUD ANIMAL PERDIDAS CONTROL DE ENFERMEDADES |
| author |
130848 Weelock, J.U. 113209 Rook, J.A.F. 98863 Neave, F.K. 62888 Dodd, F.H. |
| author_facet |
130848 Weelock, J.U. 113209 Rook, J.A.F. 98863 Neave, F.K. 62888 Dodd, F.H. |
| author_sort |
130848 Weelock, J.U. |
| title |
The effect of bacterial infections of the udder on the yield and composition of cow's milk |
| title_short |
The effect of bacterial infections of the udder on the yield and composition of cow's milk |
| title_full |
The effect of bacterial infections of the udder on the yield and composition of cow's milk |
| title_fullStr |
The effect of bacterial infections of the udder on the yield and composition of cow's milk |
| title_full_unstemmed |
The effect of bacterial infections of the udder on the yield and composition of cow's milk |
| title_sort |
effect of bacterial infections of the udder on the yield and composition of cow's milk |
| publishDate |
198 |
| work_keys_str_mv |
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| _version_ |
1756053752991711232 |