Influence of the physiological state on infestation by Rhipicephalus microplus in dairy cows

The purpose of this study was to identify the influence of physiological state, season, breed, number of lactations, dairy productivity, and stocking rate on infestation by Rhipicephalus microplus in dairy cows. Two hundred cows were selected through proportional representative sampling at the Seropédica Experimental Station (Pesagro-Rio), Brazil. Fully or partially engorged R. microplus females measuring between 4.5 and 8.0. mm were counted on the right side of each animal. The tick infestation prevalence data were analyzed in relation to the risk factors, using multiple logistic regression. Associations between prevalence and its possible influencing determinants were measured using odds ratios. The average tick count of cows during the peripartum and lactation periods was significantly higher (p<0.05; OR=4.82) than the count in dry cows. Taurine animals showed significantly higher infestation (p<0.05; OR=3.28) than pure zebuine animals. Among cross-bred animals, the infestation was higher (p<0.05) in F1 animals (1/2 taurine × 1/2 zebuine) than in Girolando animals (5/8 zebuine × 3/8 taurine). Primiparous cows (p<0.05) had significantly heavier infestations than multiparous cows. Dairy production showed a positive correlation with tick infestation (p<0.03; OR=2.94), such that the most productive animals were the most parasitized ones. Animals kept at high densities were significantly more heavily infested (p<0.05, OR=6.32) than animals kept at low density. First-lactation and high-productivity taurine animals were more vulnerable to R. microplus, thus comprising a high-risk group in dairy herds. © 2012 Elsevier GmbH.

EC24-721 Dairy Barns for Nebraska

The increasing interest shown among the farmers thruout this state in the betterment of dairy stock, and the tendency to give more attention to dairying on the farms, is bringing to the Agricultural College a great many requests for plans and suggestions for dairy barn construction. It is impossible to give every one of these inquiries individual attention to the extent of drawing a detailed plan to suit the conditions in each case. It is hoped therefore, that the material contained in this bulletin will offer helpful suggestions and answer many questions in the minds of prospective dairy men and dairy barn builders relative to the arrangement and construction of barns.

Deutsche Ausgabe von Dr. Chase's drittem, letzten und vollständigem Recept-Buch und Haus-Arzt, oder, Praktische Lehren für das Volk : das Resultat langjähriger Beobachtungen des Verfassers, enthaltend die werthvollsten und neuesten Recepte in allen Zweigen der Medizin, und Gemeinnutziges für den Haushalt, einschliesslich einer Abhandlung über Frauen- und Kinder-Krankheiten ... /

Includes sections on dairying, beekeeping, gardening, and household hints; recipes in rhyme; some recipes include wine or liquor as an ingredient.

Review of the National Commission on Dairy Policy report, the General Accounting Office report concerning milk marketing orders, and related dairy program issues [microform] : hearing before the Subcommittee on Livestock, Dairy, and Poultry of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, June 17, 1988; Burlington, VT.

"Serial no. 100-103."

Cowphilosophy; the art of practical dairy practice

Mode of access: Internet.

Report of the Delegation of the United States to the Secretary of State.

Mode of access: Internet.

Report of the Delegation of the United States to the Secretary of State.

Mode of access: Internet.

Dairy profit.

Mode of access: Internet.

Dairy manufacturing in Texas.

Lithotyped.

The trade-agreements program benefits the dairy industry.

Mode of access: Internet.

Report.

Mode of access: Internet.

Dairy profit /

"A large part of the material ... originally appeared in the columns of Hoard's dairyman; and because there have been many requests that the articles be gathered into a book, the author feels justified in offering them in their present revised and amplified form."--Foreword.

Monthly bulletin.

Volume enumeration irregular.

Report.

Issued also in the Executive documents of Ohio, 18 .

Milchwirtschaftliches zentralblatt.

Mode of access: Internet.