Relation of Milk Fat-Depressing Rations and Subclinical Mastitis to Milk Proteins

Haenlein, G.F.W.; Schultz, L.H.; Hansen, L.R.

doi:10.3168/jds.s0022-0302(68)87025-0

Cited by 16 publications

(2 citation statements)

References 17 publications

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“…Los resultados mostraron correlaciones negativas entre conteo de células somáticas y proteína en leche, la producción de proteína sintetizada en la glándula mamaria disminuye con la mastitis (5); coincidiendo con otros estudios los cuales hallaron una disminución de proteína con incremento del conteo celular en vacas lecheras (2,17,18). Sin embargo, otros reportes han mostrado resultados contradictorios (19), apreciándose un pequeño incremento del contenido de proteína en la lactación (aproximadamente desde 0.06 hasta 0.12% puntos de proteína), lo cual puede ser asociado en un incremento de la presencia de elementos de sangre en la leche a través de la reacción inflamatoria (20).…”

Section: Discussionunclassified

Efecto del amamantamiento restringido en los conteos de células somáticas en vacas holstein cruzadas

B¹,

M²,

P³

2010

Rev MVZ Córdoba

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Section: Discussionunclassified

Efecto del amamantamiento restringido en los conteos de células somáticas en vacas holstein cruzadas

B¹,

M²,

P³

2010

Rev MVZ Córdoba

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“…Leucocyte counts were assessed with the Wisconsin Mastitis Test (WMT) (40) as described previously (21). Milk fat content was determined by the standard Babcock (1,20) and whey protein content indirectly from total protein and casein or directly as described earlier (20). Statistical analyses of variance and correlation were performed according to STEEL and TORRIE (38).…”

Section: Methodsmentioning

confidence: 99%

Effects of single injections of diethylstilbestrol on milk composition and counts of leucocytes in milk of Holstein‐Friesian cattle^1,²

Haenlein

Krauss

1974

Zeitschrift für Tierphysiologie Tierernährung und Futtermittelk

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Zusammenfassung Untersuchungen über den Einfluß von Diäthylstilbesterol‐Injektionen auf Milchzusammen‐setzung und Gehalt an Leukozyten in Milch von schwarzbunten Kühen 12 schwarzbunte Kühe wurden zur Untersuchung von Einflüssen von 3 Dosierungs‐höhen (10, 30 oder 60 mg) einzelner Injektionen von Diäthylstilbestrol (DES) auf Milchmenge, Gehalte an Milchfett, fettfreie Trockensubstanz (SNF), Gesamteiweiß, Kasein, Molkeneiweiß und Leukozytenzahl benutzt. Statistisch gesicherte Erhöhungen in SNF‐, Protein‐, Kasein‐ und Molkeneiweißgehalten wurden für mehrere Tage festgestelk. Die 30‐mg‐DES/454‐kg‐Lebendgewicht‐Dosierung verursachte stärkere Reaktionen denn die 10‐ oder 60‐mg‐Dosierung. Kühe im mehr fortgeschrittenen Laktationsstadium hatten größere Milchproteingehaltserhöhungen. Das Verhältnis von Kasein zu Gesamteiweiß war nicht bedeutend verändert. Mengenzunahmen für Protein, Kasein und SNF waren statistisch gesichert zwischen dem 5. und 14. Tag nach der Injektion, hatten aber anfänglich erst eine Senkung erfahren. Fettgehalte reagierten in reziprokem Verhaltnis zu Milchmengen. Leukozytenzahlen waren erhöht für 3 Tage, reagierten am meisten nach der 30‐mg‐DES‐Dosierung und am wenigsten nach der 10‐mg‐Injektion. Ovariektomierte Kühe reagierten ähnlich wie die normalen Kühe nach den Östrogeninjektionen.

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Prediction of the yields of milk constituents in dairy cows offered silage ad libitum and concentrates at a flat rate

1992

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Individually recorded milk yields, yields and concentrations of milk components, food intakes and live weights of multiparous dairy cows given silage ad libitum and concentrates at a flat rate in weeks 4 to 13 of lactation and data for silage and concentrate composition from experiments conducted at four sites, were used to obtain simple correlations and multiple linear regressions of yields and concentrations of milk constituents on other variables.Simple correlations between yields and concentrations and other variables were low. Yield terms were most highly correlated with intake terms. Milk fat concentration was most highly correlated with silage fibre concentration. Milk protein concentration was most highly correlated with digestible energy intake. The best multiple regression models including time effects accounted proportionately for 0·35 of the variation in fat yield, 0·51 in protein yield, 0·55 in lactose yield, 0·39 in total milk yield, 0·19 in fat concentration, 043 in protein concentration and 0·19 in lactose concentration. Most of these models included terms for silage intake and cow live weight which are not generally available on farms. More practical models including fewer independent variates were therefore produced. These models accounted proportionately for 0·33 of the variation in fat yield, 048 in protein yield, 0·50 in lactose yield, 0·32 in total milk yield, 0·19 in fat concentration, 0·40 in protein concentration and 0·17 in lactose concentration.

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Relation of Milk Fat-Depressing Rations and Subclinical Mastitis to Milk Proteins

Cited by 16 publications

References 17 publications

Efecto del amamantamiento restringido en los conteos de células somáticas en vacas holstein cruzadas

Efecto del amamantamiento restringido en los conteos de células somáticas en vacas holstein cruzadas

Effects of single injections of diethylstilbestrol on milk composition and counts of leucocytes in milk of Holstein‐Friesian cattle^1,²

Prediction of the yields of milk constituents in dairy cows offered silage ad libitum and concentrates at a flat rate

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Relation of Milk Fat-Depressing Rations and Subclinical Mastitis to Milk Proteins

Cited by 16 publications

References 17 publications

Efecto del amamantamiento restringido en los conteos de células somáticas en vacas holstein cruzadas

Efecto del amamantamiento restringido en los conteos de células somáticas en vacas holstein cruzadas

Effects of single injections of diethylstilbestrol on milk composition and counts of leucocytes in milk of Holstein‐Friesian cattle1,2

Prediction of the yields of milk constituents in dairy cows offered silage ad libitum and concentrates at a flat rate

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Effects of single injections of diethylstilbestrol on milk composition and counts of leucocytes in milk of Holstein‐Friesian cattle^1,²