Brief communication: Effect of maternal diet in late gestation on development of dairy calves

Moonsan, Yingluck; Thomas, Charissa; Bryant, Racheal H.; Edwards, Grant

Item

Brief communication: Effect of maternal diet in late gestation on development of dairy calves

Moonsan, Yingluck
;
Thomas, Charissa
;
Bryant, Racheal H.
;
Edwards, Grant

Date

2018

Type

Other

Collections

Department of Agricultural Sciences

Keywords

late-gestation, fodder beet, supplementation, birth weight, morphometric development

Fields of Research

ANZSRC::0702 Animal Production , ANZSRC::070204 Animal Nutrition , ANZSRC::070202 Animal Growth and Development

Abstract

To investigate whether feeding strategies to reduce urinary N excretion would have negative effects on calf development, two feeding systems were compared. A total of 190 pregnant, Friesian × Jersey dairy cows were randomly allocated to one of two groups and offered either a low crude protein diet of maize silage and fodder beet (LCP) or a moderate CP diet of lucerne silage and fodder beet (MCP) for eight weeks prior to calving. Apparent metabolisable energy (ME) intake of dams was similar (110 MJME/cow/day) but CP concentration was greater for MCP than LCP (13.4 vs 7.5% of the DM). There was no effect of maternal diet on calf birth weight (33.0±0.5 kgLW) or morphometric measurements; heart girth (72.8±0.5) spine length (54.4±0.4) or hip height (73.1±0.4 cm). These results suggest that dietary protein restriction in late gestation does not have any immediate negative effects on in utero calf development.