Investigation analysis of mineral element deficiency of dairy cows in intensive cattle farms in Heilongjiang Province
Zhang Tongning
Zhang Cuiyu
Bai Yunlong
Song Yuxi
Xia Cheng
Zhang Hongyou
Fu Shixin
Abstract：The investigation was to understand the deficiency of mineral elements(Ca,Mg,P)in lactating cows postpartum.Ninety-eight Holstein cows from four intensive cattle farms(A,B,C,D)were randomly selected to measure serum level of Ca,Mg,P at the day of delivery,postpartum 10～20 d,30 d and 60 d.The results showed that in four cattle farms,lactating cows did not suffer from Mg and P deficiency,but had severe Ca deficiency with the incidence rates of 78.33%,87.50%,46.92%and 51.67%respectively of A,B,C,and D.The incidence of cattle farms A and B was higher than that in cattle farms C and D.Furthermore,the higher incidence of Ca deficiency was the day of delivery and postpartum 10～20 d with 72.50%and 81.39%respectively.The results indicates that Ca deficiency is a serious problem in dairy cows in the four cattle farms,especially during delivery and 10～20 d postpartum.The effective measures should be taken in time to reduce unnecessary economic losses.
Keywords：Dairy cowMineral elementDeficiency
Publication Date：2020-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 42-44 )