Influence of order of lactation on milk production and somatic cell count in Alpine goats

N Memisi,M Zujovic,Z Tomic,V Bogdanovic

doi:10.2298/bah1102227m

Abstract

In this paper, the annual results of the effect of lactation on milk production, the contents of some chemical parameters in the milk (milk fat, protein and dry matter without fat) and somatic cells in milk goat breeds Alpino in intensive production during one production year. Control is included a total of 82 French Alpine goats in different lactations (first-16 heads, the second-19 heads, 29 heads the third-and fourth and subsequent lactation together-18 heads).). Somatic cell count and chemical quality of milk is controlled on a daily basis in the laboratory for raw milk AD "Dairies" - Subotica on the machine CombiFoss FC 6200. The variability of the analyzed characteristics is presented descriptive parameters and the effect of lactation is determined by a factorial analysis of variance. The average value for somewhat milk goats for the treated population was 362.83 kg, with average milk fat content of 3.31%. Analysis of variance confirmed that the differences that were established under the influence of lactation for all traits analyzed, except for percentage of milk fat, were significant at P <0.01.

Highlights

Milk performance is polygenic property caused by numerous genes which directly or indirectly have impact on its expression
Somatic cell count and chemical quality of milk is controlled on a daily basis in the laboratory for raw milk AD "Dairies" - Subotica on the machine CombiFoss FC 6200
Analysis of variance confirmed that the differences that were established under the influence of lactation for all traits analyzed, except for percentage of milk fat, were significant at P

Summary

Introduction

Milk performance is polygenic property caused by numerous genes which directly or indirectly have impact on its expression. Increased somatic cell count is associated with decrease of milk quantity and changes in its composition, which can afec its sutiability for processing. Inflammatory process in mammary gland, ocuring as the consequence of the action of pathogen microorganisms, toxins or tissue damage, leads to changes in milk secretion, which results in quantitative and qualitative changes in milk (Katić et al, 1994; Heeschen, 1995; Bernacka, 2006). These changes relate to icnrease of somatic cell count, increase of albumin content in the milk serum, reduction of the secretion of milk components (casein, fat, lactose) and reduction of the quantity of milk. Objective of this paper was to analyse the effect of order of lactation on yield, chemical composition and somatic cell count in goat milk

Materials and Methods

Results and Discussion

Conclusion