Zobrazeno 1 - 10 of 22 pro vyhledávání: '"L W, Van den Heever"'
1
Initial and developed free fatty acid concentrations in milk from paired normal and septic subclinically mastitic udder quarters
Autor: L W, Van den Heever, Z E, Kowalski, M, Olivier
Publikováno v: Journal of the South African Veterinary Association. 61(2)
The free fatty acid (FFA) content of milk from the paired normal (N) and septic (Staphylococcus aureus or S. agalactiae) subclinically mastitic (SSM) quarters of dairy cows was determined by thin layer chromatography. Within-cow comparisons showed th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::8323825f992867f7465af5d6109caadc
https://pubmed.ncbi.nlm.nih.gov/2286984
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2
Levels of glucose, serum albumin and somatic cells before and during early stages of acute clinical mastitis artificially induced in cows by means of human strains of group-B streptococci (GBS) administered intracisternally
Autor: W H, Giesecke, L W, Van den Heever
Publikováno v: The Onderstepoort journal of veterinary research. 48(2)
The investigation was performed on 3 cows, sampled repeatedly before and during the initial 48 h of artificially induced, acute, clinical mastitis. The results of the investigation both augment and support those of earlier work on the levels and sign
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7862ab8a88f9770ff58f97d6b7a9aae8
https://pubmed.ncbi.nlm.nih.gov/7312308
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3
On the inactivation of Brucella abortus in naturally contaminated milk by commercial pasteurisation procedures
Autor: L W, Van den Heever, K W, Katz, L A, Te Brugge
Publikováno v: Journal of the South African Veterinary Association. 53(4)
Following concern about the recent publication indicating the possible ability of Brucella abortus to survive commercial pasteurisation of naturally contaminated milk, such milk was subjected to biological (BT), serological and bacteriological tests.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3e287a2a15596392f237836188844919
https://pubmed.ncbi.nlm.nih.gov/6820666
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4
The effect of sample size and culture method on the recovery of salmonella spp. from naturally contaminated carcase meal
Autor: L W, van den Heever, H N, van der Made
Publikováno v: Journal of the South African Veterinary Association. 48(1)
The results of parallel examination by two methods of 223 consignment samples of carcase meal were compared. Selective pre-enrichment of 5 g of sample prior to plating on to a solid media disclosed that 2,7% of consignments were contaminated with Sal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d4702e5add40f5afef1a130248bc7bbc
https://pubmed.ncbi.nlm.nih.gov/874948
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5
Experimental induction of bovine mastitis with human strains of group B streptococci (streptococcus agalactiae)
Autor: L W, Van den Heever, W H, Giesecke
Publikováno v: Journal of the South African Veterinary Association. 51(2)
Intrapapillary deposition of 5-30 CFU of 6 separate human strains of Group B streptococci into 7 lactating quarters of 6 cows resulted in clinical mastitis in all. Identical streptococci were subsequently recovered from 6 of the affected quarters. De
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d27e475d739548d30de6d2d0ba1f5cfd
https://pubmed.ncbi.nlm.nih.gov/7019443
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6
Control of pet animals
Autor: L W, Van den Heever
Publikováno v: South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde. 50(44)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7ef0d44f5f4a3a5362b209899d4bb445
https://pubmed.ncbi.nlm.nih.gov/996669
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7
Group B streptococcus-comparison of Streptococcus agalactiae isolated from humans and cows in the Republic of South Africa
Autor: L W, Van den Heever, M, Erasmus
Publikováno v: Journal of the South African Veterinary Association. 51(2)
The serological and biochemical characteristics of 100 strains of Streptococcus agalactiae isolated from quarter mild of dairy cows and of 107 strains cultured from various sites of human patients, were determined and compared. All the isolates were
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ada6e136dc36230cce3c7347417dbf3b
https://pubmed.ncbi.nlm.nih.gov/7019445
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9
The comparative incidence of subclinical bacterial bovine mastitis in 17 herds when using two sets of diagnostic criteria
Autor: L W, van den Heever, G V, Turner
Publikováno v: Journal of the South African Veterinary Association. 47(4)
On the single examination of 6804 quarter milk samples during a routine mastitis survey in 17 herds it was found that whereas 12,4% of quarters were diagnosed as subclinically mastitic when using the IDF standard set of diagnostic criteria, only 2,4%
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::01b9e6fe95bb8f6518a424e3397fdc64
https://pubmed.ncbi.nlm.nih.gov/1018294
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10
Specific serological identification of ostrich meat and meat products
Autor: L W, van den Heever, S, Marais
Publikováno v: Journal of the South African Veterinary Association. 46(3)
Using aqueous urea solution extracts of heated ostrich muscle as antigen for the production of precipitating rabbit antiostrich sera, it was possible to specifically identify raw, heated (70-95 degrees C) and air dried-salted ostrich meat by means of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::fb6bee412e7dc78494eeb8197cdad50a
https://pubmed.ncbi.nlm.nih.gov/815549
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