Abstract
ABSTRACT The aim of this research was to determine the influence of lactation number and parity on milk yield of Saanen goat’s breed. It has been concluded that milk yield was higher for goats that had given birth to twins and three kids than for goats that had given birth to a single kid (P<0.05). The longevity has a great positive impact on production, given that goats in the fifth lactation produced more milk than goats in first or second lactation (P<0.05), while goats in the sixth lactation still produced more milk than goats in first lactation (P<0.05). During the period from 2014- 2019, the research was conducted on a farm of multiparous Saanen goats in Vojvodina (northern part of Serbia). In the observed period, the farm had between 350 and 400 goats per milking, and the research included a total of 1,628 concluded lactations, within which the first lactations were the most 484, then the second 381. According to the number of lactations, goats were grouped into classes from one to seven and from one to three for parity. By comparing each individual lactation, it was determined that in first lactation goats produced significantly lower milk than goats in the rest lactations(P<0.05), except the seventh. Research has shown that lactation number has a significant influence on milk yield (P=0.00). Increasing the fertility of goats significantly affects the production capacity of dairy goats, since does with a larger number of kids in the litter had a significantly higher milk production (P<0.05). Due to the larger number of kids in the litter, milk production also increases. Likewise, it is assumed that the increase in milk yield of goats with two and three kids is a consequence of a larger placenta, i.e. stronger lactogenic activity during pregnancy.
Highlights
IntroductionThe highest growth is recorded in less industrialized countries, while in Europe the number of goats is declining
Goat production in the world has been continuously growing (Giuseppe et al, 2018)
Regarding the amount of milk produced in lactation, as the most important factor of production in dairy goat breeding, it was determined that the goats in the fifth lactation, which was the most productive according to the rest lactations had an average of 148.25 kg of milk higher production than goats in the first lactation, whose average production was 661.37 kg of milk
Summary
The highest growth is recorded in less industrialized countries, while in Europe the number of goats is declining. This practically means that there is a continuous growth of extensive or grazing goat breeding, while intensive farm goat breeding is decreasing. The length of the lactation period, the daily and total amount of milk yield, and the composition of milk from goats are influenced by genetic factors (breed with its physiological characteristics) and numerous paragenetic factors, some of them are imposed and cannot be significantly influenced by the breeder (climate and lactation length...), and others are affected by short-term changes (diet, milking) or long-term changes (selection) (Goetscha et al, 2011; Krajinović and Pihler, 2015). Any change can affect both of traits, milk yield and milk composition (Faye and Konuspayeva, 2012)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
