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Effect of supplementation Omnigen-AF® in parameters somatic cell count and microbiologic cultures in early lactation dairy cow

Grant number: 15/20248-2
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2015
Effective date (End): October 31, 2016
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Production
Principal Investigator:José Luiz Moraes Vasconcelos
Grantee:Isabela Rossetto Salmazo
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

The objective of this study is to evaluate if Omnigen-AF® supplementation influences somatic cell count (SCC) and microbiologic culture in early lactation dairy cows. Forty multiparous crossbred Holstein/Gir pregnant non-lactating cows will be classified according to body weight (BW) and body condiiton score (BCS) 30 days previous to the expected calving date and assingned to one of two treatments: 1)diet formulated to meet maintenance and lactation requirements with Omnigen-AF® supplementation (56g/animal/day); or 2) diet formulated to meet maintenance and lactation requirements with caolin (ruminal inert product) supplementation (56g/animal/day). Animals will be kept in drylot pens with natural shade and ad libitum water and corn silage. Concentrate and supplementation (Omnigen-AF® or caolin) will be fed individually in headlock system during all the experimental period. BW will be recorded weekly and BCS every fifteen days. Milk production will be recorded daily for each animal and a milk sample will be collected for SCC and composition. Every fifteen days a individual milk sample will be collected for microbiologic culture. Data will be analyzed using SAS MIXED procedure.