Results 181 to 190 of about 533,961 (206)

The History of the Dorper Sheep

Small Ruminant Research, 2000
This short history of the Dorper sheep traces its background and the steps taken to develop that breed in South Africa. The most important traits considered for the developing of the Dorper are listed and the breeding system outlined. The development of the White Dorper is also detailed and the breed improvement programs are indicated.
exaly   +3 more sources

Grazing Behaviour and Diet Selection by Dorper Sheep

Small Ruminant Research, 2000
The grazing behaviour and diet selection by Dorper sheep, as well as other related aspects (pasture intake, walking habits and trampling) is reviewed. It was clear that Dorper sheep are less-selective grazers, compared to Merino-type breeds. Dorpers utilised shrubs and bushes to a greater extent, but grass to a lesser extent in relation to Merino sheep.
exaly   +3 more sources

Laryngeal chondritis in two Dorper sheep

Veterinary Record Case Reports, 2020
SUMMARY Laryngeal chondritis is an acute obstructive upper respiratory condition characterised by severe dyspnoea and laryngeal stridor, considered an uncommon disease in sheep. In this study, we describe detailed clinical evolution, imaging and pathological findings of the first cases of laryngeal chondritis in Dorper sheep.
Antonio Carlos Lopes Câmara, José Renato Junqueira Borges, Rita de Cássia Campebell, Marcio Botelho de Castro, Benito Soto‐Blanco   +4 more
openaire   +1 more source

Feed efficiency improves sperm quality and viability of fertilisation in Dorper sheep

New Zealand Journal of Agricultural Research, 2023
The aim was to evaluate the influence of residual feed intake (RFI) on the semen characteristics of Dorper sheep after cryopreservation. Six Dorper sheep were used, classified from a population of 64 according to feed efficiency (groups of animals ...
Jair Correia Matos, A. R. F. de Lucena, Bernardo José Marques Ferreira, W. D. de Souza, G. Gois, D. Menezes, E. Moraes, M. A. A. Queiroz   +7 more
semanticscholar   +1 more source

Changes in the physiological, hematological and parasitological parameters of Dorper sheep in relation to residual feed intake and confinement environment.

Journal of Thermal Biology, 2023
The selection of animals with greater feed efficiency has unknown parasitological and physiological parameters when confined in full sun or shade. Thus, we aimed to assess the effect of residual feed intake (RFI) and the confinement environment on the ...
Jair Correia Matos, A. R. F. de Lucena, Elaine Monalize Serafim Castro, Eline Almeida Rodrigues de Souza, Ery Jonhons Nascimento Ramos, G. Gois, M. C. Horta, Daniel Ribeiro Menezes, E. Moraes, M. A. A. Queiroz   +9 more
semanticscholar   +1 more source

Surgical ligation of patent ductus arteriosus in a dorper sheep

Veterinary Surgery, 2018
AbstractObjectiveTo report the diagnosis and treatment of a companion dorper wether with patent ductus arteriosus (PDA).Study designCase report.AnimalAn 8‐month‐old dorper wether presented to its primary care veterinarian for a persistent cough and was referred for suspected heart failure on the basis of physical examination and thoracic radiography. A
Jennifer L, Halleran, Ryan D, Baumwart, Danielle R, Dugat, Robert N, Streeter, Heidi, Phillips   +4 more
openaire   +2 more sources

Genetic Parameter Estimates for Pre-Weaning Weight Traits in Dorper Sheep

Small Ruminant Research, 2001
Genetic parameters were estimated for birth-, 42-day, and 100-day (weaning) weight in the Dorper flock of the Glen Agricultural Institute in South Africa. Direct heritability estimates of 0.11, 0.28 and 0.20 and maternal heritability estimates of 0.10, 0.10 and 0.10 were obtained for body weights at birth, 42 and 100 days, respectively.
Frederick Neser, G J Erasmus, J B van Wyk   +2 more
exaly   +4 more sources

Performance of Dorper sheep under an accelerated lambing system

Small Ruminant Research, 1992
Abstract Lambing records from 1984 to 1989 comprising 699 ewe lambing years were used. Ewes were exposed to three fixed 30-d joining periods/yr to lamb during February/March (first season), June/July (second season) and October/November (third season). Number of ewes lambed/ewes joined/yr was 0.85, and the number of lambs born/ewe joined/yr was 1.21.
S.J. Schoeman, R. Burger
openaire   +1 more source

Effect of urea supplementation on performance and safety in diets of Dorper crossbred sheep

Journal of Animal Physiology and Animal Nutrition, 2015
SummaryThis study was conducted to evaluate the efficacy and safety of dietary urea in sheep rations having a 50:50 concentrate:roughage ratio. Sixty‐four Dorper × thin‐tailed Han crossbred ram lambs with an average body weight of 30.8 (±0.02) kg were randomly divided into four groups of 16 sheep each, and each group was fed one of the following diets:
B, Wang, T, Ma, K-D, Deng, C-G, Jiang, Q-Y, Diao   +4 more
openaire   +2 more sources

Anatomical and topographical features of the area of pelvic bones of dorper sheep

International bulletin of Veterinary Medicine, 2020
Movement is a characteristic and in-herented property of the animal organism. Without the implementation of musculoskel-etal work, it becomes impossible for the animal to move in the environment, search for food, protect themselve and procreate. This work in the body is performed by the musculoskeletal system, which accounts for most of the body weight.
A. K. Mamedkuliev, M.V. Shchipakin
openaire   +1 more source