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Publikováno v:
Small Ruminant Research. 212:106705
Autor:
Kennedy Dzama, J.B. van Wyk, A. J. Scholtz, Ketshephaone Thutwa, A. R. Gilmour, Schalk Cloete, J.J.E. Cloete
Publikováno v:
Tropical Animal Health and Production. 53
Ticks can compromise productivity and welfare in free-ranging sheep. Chemical tick control may not be sustainable in the long term. Alternative control measures must be sought for an integrated control programme. Birth and weaning weights as well as
Publikováno v:
Foods, Vol 9, Iss 725, p 725 (2020)
Foods
Volume 9
Issue 6
Foods
Volume 9
Issue 6
The effect of production systems on the sensory quality characteristics of Dorper lambs was investigated. Sixty lambs (ewes, rams, castrates) were allocated into two production groups (feedlot or free-range) at weaning with equal numbers of each sex
Publikováno v:
Small Ruminant Research. 202:106465
The impact of selection of sheep for reproduction on meat traits are not evident, while genetic parameters for meat traits is absent for South African pure breeds. Quantitative and qualitative meat traits were therefore studied in progeny of two Meri
Autor:
Marelee Burger, J.J.E. Cloete, Schalk Cloete, Arthur R. Gilmour, A. J. Scholtz, Cornelius L. Nel, Japie B. van Wyk
Publikováno v:
Applied Animal Behaviour Science. 236:105217
Data for birth weight (BW), lamb survival (LS) and neonatal behaviour, including records of between 1494 (latency of birth to first suckling or LBS) and 2705 (BW and LS) lambs were used. Additionally to the lamb data, ewe data comprising of between 1
Publikováno v:
Applied Animal Behaviour Science. 234:105209
The behavioural reactivity of two divergently selected lines of South African Merino sheep for an increased (HL: N = 1187) and reduced (LL: N = 285) number of lambs weaned per ewe mated was investigated using a docility test and a ‘scale’ test. T
Genetic parameters for tick count and udder health in commercial and indigenous ewes in South Africa
Publikováno v:
Veterinary Parasitology. 230:33-42
The genetics of tick infestation in sheep need study, as host resistance often forms part of integrated pest control programs. Repeated udder health scores, site-specific tick count, mating weight and reproduction records (N=879-1204) were recorded a
Publikováno v:
Applied Animal Behaviour Science. 233:105152
Data of 3375 6.5-month-old Merino weaners from two divergently selected lines at Elsenburg were used to evaluate the genetics of the response of weaner lambs to flock isolation and a stationary human in an arena test. The High (H) line was selected u
Publikováno v:
Small Ruminant Research. 69:28-35
The effect of crossing Dorper ewes with Ile de France (IdF), Merino Landsheep (ML) and SA Mutton Merino (SAMM) rams in a terminal crossbreeding program was investigated during 2000 and 2001. Expressed as percentage of purebred Dorper lambs, the avera