J K van Niekerk
Overview
Explore the profile of J K van Niekerk including associated specialties, affiliations and a list of published articles.
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Articles
13
Citations
147
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Recent Articles
1.
ADSA Foundation Scholar Award: New frontiers in calf and heifer nutrition-From conception to puberty
van Niekerk J, Fischer-Tlustos A, Wilms J, Hare K, Welboren A, Lopez A, et al.
J Dairy Sci
. 2021 May;
104(8):8341-8362.
PMID: 34053756
Dairy calf nutrition is traditionally one of the most overlooked aspects of dairy management, despite its large effect on the efficiency and profitability of dairy operations. Unfortunately, among all animals...
2.
Guo W, van Niekerk J, Zhou M, Steele M, Guan L
J Dairy Sci
. 2021 Feb;
104(5):5948-5963.
PMID: 33612210
The objectives of this study were to investigate the shifts in rumen and colon mucosa-associated microbiota in dairy calves fed a high milk replacer feeding rate before and after weaning...
3.
van Niekerk J, Middeldorp M, Guan L, Steele M
J Dairy Sci
. 2021 Jan;
104(3):3632-3645.
PMID: 33455747
This study evaluated pre- to postweaning ruminal structural development, fermentation characteristics, and acute-phase protein levels in calves with a high milk replacer (MR) feeding rate prior to weaning. Six ruminally...
4.
Fischer-Tlustos A, Hertogs K, van Niekerk J, Nagorske M, Haines D, Steele M
J Dairy Sci
. 2020 Feb;
103(4):3683-3695.
PMID: 32037163
The objective of this study was to characterize the oligosaccharide (OS) profile of colostrum and transition milk from primiparous (Pp, n = 10) and multiparous (Mp, n = 10) Holstein...
5.
van Niekerk J, Fischer-Tlustos A, Deikun L, Quigley J, Dennis T, Suarez-Mena F, et al.
J Dairy Sci
. 2020 Jan;
103(3):2186-2199.
PMID: 31954563
The aim of this study was to evaluate effects of milk replacer (MR) feeding rate and processing of corn in calf starter (CS) on growth performance, nutrient digestibility, and rumen...
6.
van Niekerk J, Middeldorp M, Steele M
J Dairy Sci
. 2018 May;
101(8):7212-7218.
PMID: 29753476
The objectives of this study were to develop a methodology for biopsying the rumen and colon of young dairy calves and to collect suitable quality tissue samples for microscopic and...
7.
Desjardins-Morrissette M, van Niekerk J, Haines D, Sugino T, Oba M, Steele M
J Dairy Sci
. 2018 Feb;
101(5):4168-4179.
PMID: 29454696
The objective of this study was to determine if feeding colostrum to newborn calves through an esophageal tube, compared with a nipple bottle, would delay abomasal emptying, which would in...
8.
Huppert F, van Niekerk J
Cochrane Database Syst Rev
. 2007 Jul;
(2):CD000304.
PMID: 17636627
Background: In view of the theoretical rationale for beneficial effects of DHEA and DHEAS on cognitive function in ageing and dementia, we have undertaken a thorough investigation of well-conducted studies...
9.
Evans J, Malouf R, Huppert F, van Niekerk J
Cochrane Database Syst Rev
. 2006 Oct;
(4):CD006221.
PMID: 17054283
Background: In view of the theoretical possibility of beneficial effects of DHEA or DHEAS in retarding age-associated deterioration in cognitive function, we have reviewed studies in this area. Objectives: To...
10.
Huppert F, van Niekerk J
Cochrane Database Syst Rev
. 2001 Jun;
(2):CD000304.
PMID: 11405958
Background: In view of the theoretical rationale for beneficial effects of DHEA and DHEAS on cognitive function in ageing and dementia, we have undertaken a thorough investigation of well-conducted studies...