Abstract

Factors of variation influencing production level, SCC and basic milk composition in dairy goats

Highlights

  • In Poland the average yearly milk production of nearly 9 000 goats examined in the years 1983 - 2000 reached 570.4 kg of milk per animal, with 3.52% mean fat and 2.93% mean protein contents (Bagnicka et al, 2002)

  • 4 7.264 5.96 6.63 9.91 counts in goat milk as well as content of basic milk constituents are characterized by considerable variation between individual goats

  • A similar variation of daily milk yield and somatic cell counts, as well as contents of fat, protein and lactose in milk was found in Alpine goats (Zeng and Escobar, 1995; Zeng et al, 1997) and Murciano-Granadina goats (López et al, 1999)

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Summary

Introduction

In Poland the average yearly milk production of nearly 9 000 goats examined in the years 1983 - 2000 reached 570.4 kg of milk per animal, with 3.52% mean fat and 2.93% mean protein contents (Bagnicka et al, 2002). The size of production and the percentage content of fat, proteins and lactose are influenced by the goats’ kidding season (Browning et al, 1995; Crepaldi et al, 1999; Prasad and Sengar, 2002), as well as the number of kids born and weaned (Browning et al, 1995; Macciota et al, 2005) and the birth type of goats (Goonewardene et al, 1999). Somatic cell counts (SCC) in goat milk increase with progressing lactation (Wilson et al, 1995) and a seasonal increase in this parameter may be observed in the period from April to September (Zeng and Escobar, 1996)

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