Povezanost pariteta, fekunditeta i ocjene tjelesne kondicije s nekim metaboličkim pokazateljima iz krvnog seruma njemačke šarene koze prije i nakon porođaja.

Abstract

The aim of present study was to study the effect of parity and fecundity on the body condition score and blood serum concentration of metabolites (beta-hydroxybutyrate, glucose, total cholesterol and triglycerides) during the pre and post parturient period in German Improved Fawn goats. Forty goats (primiparous (n = 18) and multiparous (n = 22) were used in the study. Blood sampling were done 4 times for each goat, starting 20 days before expected parturition, after parturition, and on the 20th and 40th day of lactation. Blood samples were collected by jugular puncture. In the obtained blood serum concentrations of metabolites were determined by the standard method of absorptive spectrophotometry. The total concentration of beta-hydroxybutyrate and triglycerides in goat blood serum was not different within the category of body condition score, but the level of glucose was significantly lower in intermediate and fat goats and the level of total cholesterol was higher (P<0.05) in fat goats. The number of kids per doe and parity did not influence the total concentration of metabolites in goat blood serum. At the beginning of lactation and during lactation, the mean values of body condition score in goats were decreased (P<0.05). The concentration of beta -hydroxybutyrate was the highest immediately after parturition and the lowest 40 days after parturition. Levels of glucose were higher after parturition when the levels of total cholesterol were lower. Only the concentration of triglycerides in the goats’ blood sera did not differ. Some blood serum parameters and body condition scoring can be useful for evaluation of the nutritive and health status of dairy goats.Cilj istraživanja je bio odrediti utjecaj pariteta i fekunditeta na ocjenu tjelesne kondicije i koncentraciju metabolita iz krvnog seruma (beta-hidroksibutirat, glukoza, ukupni kolesterol i trigliceridi) za vrijeme, prije i poslije puerperalnog razdoblja u njemačke šarene koze. U istraživanje je bilo uključeno 40 koza, 18 primiparnih i 22 multiparne. Krv je kozama vađena iz jugulane vene četiri put počevši od 20. dana prije očekivanog jarenja, poslije jarenja, te 20. i 40. dana poslije jarenja. U dotičnom serumu određivane su koncentracije metabolita standardnom metodom apsorptivne spektrofotometrije. Ukupna koncentracija beta -hidroksibutirata i triglicerida u krvnom serumu koza nije se razlikovala u odnosu na kategoriju ocjene tjelesne vanjštine, ali je razina glukoze bila značajno niža u umjereno gojnih i pretilih koza, dok je razina ukupnog kolesterola bila viša (P<0,05) u pretilih koza. Broj jaradi po kozi i paritet nisu utjecali na ukupnu koncentraciju metabolita u krvnom serumu koza. Na početku i za vrijeme laktacije, srednje vrijednosti ocjene tjelesne vanjštine koza su padale (P<0,05). Koncentracija beta-hidroksibutirata bila je najviša neposredno nakon porođaja i najniža 40. dan poslije porođaja. Razina glukoze bila je najviša poslije porođaja dok je razina ukupnog kolesterola bila niža. Jedino se nije razlikovala razina triglicerida u krvnom serumu koza. Neki pokazatelji u krvnom serumu i ocjena tjelesne vanjštine mogu se koristiti pri vrednovanju hranidbenoga zdravstvenog statusa muznih koza