Biochemical ingredient of colostrum cows Holstein-Frisian rase

Abstract

The aim of the research of this paper has been to examine concentration of the main colostrum ingredients after calving, when mammary gland activity is very intensive before the forthcoming lactation. Holstein-Frisian cows have been chosen for this experiment. The experiment has included cows that have had at least one (n=5) up to more lactation cycles (n=8). The cows yielding 7000 litters of milk p.a. in the previous lactation and have minimum two calving cycle. Of each animal one samples of colostrum have been taken. The results obtained show that there are statistical value (p lt 0.001) in concentration of the proteins, lipids, lactose, calcium, phosphorous, dry supstances examined in cows colostrums with one lactation, while another cows group with more lactateon, between three and seven, concentration of proteins, lipids and lactose is statistical values is p lt 0.01, calcium, dry supstances and pH statistical values is p lt 0.001, while concentration of phosphorus is on statistical values p lt 0.1. With compare those groups concentrations of phosphorus and pH statistical values is p lt 0.1, while concentration in proteins, lipids and lactose, statistical values is not proof.

Ispitivali smo koncentracije glavnih sastojaka kolostruma krava Holštajn-Frizijske rase, vezanog sistema držanja, koje su podeljene u dve grupe. U prvoj grupi su bile krave koje su imale jednu laktaciju, u drugoj grupi su krave sa više laktacija. Analizom pojedinačnih vrednosti unutar grupa dokazano je da postoji statistički vrlo značajna razlika u sadržaju sastojaka kolostruma kod krava koje su imale jednu laktaciju. Kod druge grupe krava, razlika u sadržaju ispitivanih parametara je na nižem nivou statističke značajnosti. Međusobnim poređenjem ovih grupa dokazana je značajna razlika u sadržaju fosfora (p lt 0.05).