R G Holroyd
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Explore the profile of R G Holroyd including associated specialties, affiliations and a list of published articles.
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30
Citations
177
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Recent Articles
1.
Holroyd R, Arthur B, Mayer B
Aust Vet J
. 2017 Dec;
55(5):257-262.
PMID: 29235630
The reproductive performance of beef cattle in 5 herds mated all year round in north-west Queensland was examined from 1970 to 1973. Conception rates, conception patterns and branding rates were...
2.
Holroyd R, Bickley J
J Youth Adolesc
. 2014 Jan;
5(1):101-4.
PMID: 24407974
Comparison of the 1960 and 1972 revisions of the Stanford Binet LM shows mean differences of approximately 10 points in favor of the 1960 norms for ages 2-5. This difference...
3.
Fordyce G, Holroyd R, Taylor J, Kirkland P
Aust Vet J
. 2013 Aug;
91(9):385-90.
PMID: 23980832
Objective: To compare reproduction in extensively managed, tropically adapted beef cows that were either seropositive or seronegative to Neospora caninum. Design: Longitudinal study of cows within management groups. Methods: Compare...
4.
Fortes M, Holroyd R, Reverter A, Venus B, Satake N, Boe-Hansen G
Theriogenology
. 2012 Apr;
78(2):326-33, 333.e1-4.
PMID: 22494672
Sperm chromatin fragmentation is associated with subfertility, but its relationship with age progression in young bulls is poorly understood. The objective was to assess sperm chromatin fragmentation during the early...
5.
Hawken R, Zhang Y, Fortes M, Collis E, Barris W, Corbet N, et al.
J Anim Sci
. 2011 Nov;
90(5):1398-410.
PMID: 22100599
The genetics of reproduction is poorly understood because the heritabilities of traits currently recorded are low. To elucidate the genetics underlying reproduction in beef cattle, we performed a genome-wide association...
6.
Burns B, Gazzola C, Holroyd R, Crisp J, McGowan M
Reprod Domest Anim
. 2011 Feb;
46(3):534-53.
PMID: 21332828
The overall objective of one of the major research programs in the Co-operative Research Centre (CRC) for Beef Genetic Technologies is to 'Improve female reproductive performance' in tropical, northern Australian...
7.
Burns B, Fordyce G, Holroyd R
Anim Reprod Sci
. 2010 May;
122(1-2):1-22.
PMID: 20447780
A review of factors that may impact on the capacity of beef cattle females, grazing semi-extensive to extensive pastures in northern Australia, to conceive, maintain a pregnancy and wean a...
8.
Fordyce G, Fitzpatrick L, Cooper N, Doogan V, De Faveri J, Holroyd R
Anim Reprod Sci
. 2002 May;
71(1-2):81-99.
PMID: 11988373
Calf output of bulls was derived using DNA typing for paternity following multiple-sire mating at two sites in northern Australia. At Swan's Lagoon Beef Cattle Research Station, 12, mixed-age, Brahman...
9.
Holroyd R, Doogan V, De Faveri J, Fordyce G, McGowan M, Bertram J, et al.
Anim Reprod Sci
. 2002 May;
71(1-2):67-79.
PMID: 11988372
On 10 northern Australian properties, the number of calves sired (calf output) by individual bulls in multiple-sire matings was measured by DNA typing for paternity. There were 235 bulls (92...
10.
Bertram J, Fordyce G, McGowan M, Jayawardhana G, Fitzpatrick L, Doogan V, et al.
Anim Reprod Sci
. 2002 May;
71(1-2):51-66.
PMID: 11988371
Serving capacity studies were conducted on Santa Gertrudis, 5/8 Brahman, Brahman and Belmont Red bulls at 10 sites. Modifications, such as providing prior sexual experience, using females in oestrus and...