Naslov
Milk components in the herd health and productivity control

Autori
Marenjak, Terezija Silvija ; Poljičak-Milas, Nina ; Kampl, Branimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXII World Buiatrics Congress, Abstracts, Hannover, Germany 18-23 August, 2002. / Bumgartner, W., Ugarte, R., Rheinberger, R., Lekeux, P. - Hannover, 2002

Skup
XXII World Buiatrics Congress

Mjesto i datum
Hannover, Njemačka, 18.08.2002. - 23.08.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
milk; protein; urea; fat; body condition scoring; herd health

Sažetak
For many years the various systems for evaluation of herd health status have been developed.In recent years, the great value of milk constituents as a useful tool for the nutritional monitoring but also as indicators of sub- clinical disease and impaired fertility have been introduced. Therefore, nutritional and health status were studied in cows using the method based on the measurement of protein, fat and urea content in milk. The research was carried out in 14 farms located in the northwestern part of Croatia during the winter period. The mean number of cows per farm was 11. The farms were chosen randomly from the herd book register. The individual milk samples were obtained from 94 Simmental cows between 3rd and 7th week postpartum. The average milk production was 19.6 +- 4.3L with annual milk yield 3966 per lactation. Low milk protein (lower than 3.19%) and low milk urea (lower than 2.9 mmol/L) were recorded in 44%, and high milk fat (higher than 4.0) in 50% of animals. The evaluation of dietary status in terms of milk component conteents revealed a greater shortage of energy and protein ratio. The nutritional status based the body condition scoring of animals showed to be adequate in all but one farms. The most important problems were periodical fertility in most animals. The inadequate supply of energy was posibly related to reproductive efficiency, although other elements should also be considered such as determination of biochemical parameters in milk proof, drawing more attention to meet dietary requirements for each production group and the obvious need for higher professional involvement in order to improve farm menagement.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA