Beef Science Commons^™

A Review Of Plant Introductions To The Kimberley 1955 To 1987, R Mccartney

Grain and other field crops published reports

This report summarizes the work done by the Department of Agriculture, Western Australia, in the west and north Kimberley in introducing plant species during 1955-1987.

For the purposes of this repor1the following areas are defined thus:

• West Kimberley- lies between latitude 17°5 and 19°5 and longitude 121°E and 127°E, with an extension to the north of 1° between 121°E and I 24°20'E. The area is 118,000 km".

• North Kimberley - lies north of latitude 17°5 and between longitude 124°20'E and 127°30'E. The area is 85,000 km'.

• East Kimberley-lies north of latitude 19°5 and between longitude 127°30'E and …

Immunization Of Cattle With A Semi-Purified Fraction Of Solubilized Membrane-Bound Antigens Extracted From The Midgut Of The Tick Rhipicephalus Appendiculatus, Suliman Essuman, Olusegun O. Dipeolu, Thomas R. Odhiambo

All Peer-Reviewed Publications

Boran cattle were immunized with a semi-purified fraction (F2) of solubilized membrane-bound antigens extracted from the midgut of the tick Rhipicephalus appendiculatus. A subsequent challenge with all stages of R. appendiculatus showed protection of the cattle to a significant degree. There was a decrease in engorgement weight of ticks, the number which fed above critical engorgement weight was considerably reduced, and about 38% of the larvae which fed to repletion did not moult. The major cause of death of adult female ticks was the increased grooming by cattle as a result of increased dermal irritation. © 1991 Elsevier Science Publishers …

Towards The Selection Of Cattle For Tick Resistance In Africa, J. J. De Castro, P. B. Capstick, S. Nokoe, H. Kiara, F. Rinkanya, R. Slade, O. Okello, L. Bennun

All Peer-Reviewed Publications

Half-body tick collections and visual assessment of tick burdens were performed monthly over six months on 100 bulls at the Kenya National Boran Stud, Mutara Ranch, Kenya. Boophilus decoloratus predominated among several tick species infesting the animals. Burdens of B. decoloratus and total tick burdens were highly correlated. Rankings of relative tick resistance among bulls were consistent from month to month. Rankings based on visual assessment were very close to those based on actual tick burdens. Animals with thin skins appeared to carry fewer ticks, but tick burden bore no relationship to coat colour. The results suggest that simple visual …

Bulletin No 4225 - Dairying In Western Australia, Dean Maughan

Bulletins 4000 -

Dairying in Western Australia is a small though very efficient industry. In 1989/90, 480 dairy farmers produced 266 million litres of milk for an estimated return of $84 million. The retail value of milk and dairy products was estimated to be $250 million making dairying a very significant industry in the south-west of Western Australia.

Arkansas Cooperative Beef Bull Performance Test 1991, M. W. Eaton, A. E. Brown Jr., J. A. Hornsby, R. W. Parham, J. D. Shockey, W. C. Loe

Arkansas Agricultural Experiment Station Research Series

Performance testing of beef bulls was initiated to improve productivity of Arkansas beef cattle through breeding. This cooperative testing program provides cattlemen with reliable information for identifying animals with superior breeding value for the traits of production measured in the test. By using the information as a basis for herd sire selection, a breeder can greatly increase the chances of obtaining a bull that will sire rapid-gaining, more efficient, highquality calves. Such calves can increase profits for both the breeder and the feeder. This testing program provides information that is useful to financial institutes in arranging their lending programs and …

1991 Nebraska Cattlemen Bull Selection Clinics

University of Nebraska Historical Extension: Bulletin

Program

Welcome and Introduction

Use of Expected Progeny Differences (EPD's) in Bull Selection

... at Columbus: by Steve McGill, Director Shorthorn Performance Records, American Shorthorn Association, Omaha, NE

... at North Platte, Chadron and Gering: by Keith V ander Velde, Director Beef Programs, American Breeders Service, De Forest, WI

... at Fairbury, Sutton, Verdigre: by Roy Wallace, Director Beef Programs, Select Sires, Plain City, OH

Demonstration of EPD use in Bull Selection: - Dr. Jim Gosey, NU Extension Beef Specialist, Nebraska Cattlemen, Purebred Council Representative; Featured Speaker--McGill, Vander Velde or Wallace

Discussion of Breeding Soundness Examination (BSE) of Bulls: by …

Miscellaneous Publication 33/91 - Markets For Western Australian Beef, Alan Peggs

Animal production and livestock published reports

In 1990/91 the Western Australian beef industry generated close to $172 million and was the State's third largest rural industry.

As at 31 March this year the Australian Bureau of Statistics estimates the State's cattle herd at 1,651,000 head of which 108,000 head are dairy cattle. Of the beef cattle 832,000 are located in the agricultural area and 819,000 in the pastoral area.

The principal market for Western Australian beef is the domestic market. This market consumes around 65 per cent of the State's annual production. Export markets use close to 35 per cent with the principal markets being the …

Infection Rates In Glossina Morsitans Morsitans Fed On Waterbuck And Boran Cattle Infected With Trypanosoma Congolense, Steve Mihok, Reardon O. Olubayo, David F. Wesonga

All Peer-Reviewed Publications

Teneral Glossina morsitans morsitans were fed on waterbuck (Kobus defassa) and Boran cattle (Bos indicus) infected experimentally with Trypanosoma congolense clone IL2895. Infection rates in tsetse varied from 9 to 31% when fed on cattle, and from 2 to 59% when fed on waterbuck. In waterbuck, infections were often detected through the development of parasites in tsetse at times when parasitaemia could not be detected through microscopic examination of blood. Male and female, and 1- and 2-day-old flies were equally susceptible to infection on both hosts. Infection in tsetse was associated with a 14% absolute reduction in survival during the …

Predation On Livestock Ticks By Chickens, S. M. Hassan, O. O. Dipeolu, A. O. Amoo, T. R. Odhiambo

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Chickens were shown to be natural predators of ticks. Rhipicephalus appendiculatus were recovered in large numbers from the crops and gizzards of chickens which had scavenged for 30 min-1 h among tick-infested cattle. Other ticks recovered were Amblyomma variegatum and Boophilus decoloratus. The numbers of ticks recovered ranged from 3 to 331, with an average of 81 per chicken. Cattle facilitated the predation of ticks by certain behavioural actions. Chickens also picked up both engorged and unengorged ticks seeded on vegetation, but unengorged ticks were preferred. The possibility of tick predation by chickens forming a viable biological control component in …

Pathogenicity Of Tsetse-Transmitted Trypanosoma Congolense For Waterbuck (Kobus Defassa) And Boran Cattle (Bos Indicus), R. O. Olubayo, S. Mihok, D. F. Wesonga, E. R.M. Mbwabi

All Peer-Reviewed Publications

Five waterbuck (Kobus defassa) and four Boran cattle (Bos indicus) were infected with Trypanosoma congolense IL2895 using Glossina morsitans morsitans. At the same time, two waterbuck and two cattle were inoculated intravenously with bloodstream forms. With both methods of challenge, cattle had short prepatent periods followed by a continuous high parasitaemia. All cattle became severely anaemic and had to be treated with trypanocidal drugs to prevent death. In contrast, tsetse and intravenous challenge of waterbuck resulted in a long prepatent period, followed by brief, intermittent levels of low parasitaemia, and eventual selfcure. Waterbuck did not become anaemic, even during short …

Histopathology Of Attachment Sites Of Amblyomma Variegatum And Rhipicephalus Appendiculatus On Zebu Cattle Of Varying Resistance To Ticks, A. A. Latif, D. K. Punyua, P. B. Capstick, S. Nokoe, A. R. Walker, J. D. Fletcher

All Peer-Reviewed Publications

Mature, unimproved East African Zebu cattle (Bos indicus) naturally exposed to ticks from birth were ranked for resistance to ticks by repeated whole-body counts of infesting ticks. Four cattle of high resistance, four of low resistance and two of intermediate resistance were artificially infested with nymphs of Amblyomma variegatum and Rhipicephalus appendiculatus. Two Friesian cattle (Bos taurus) with less exposure to ticks were similarly infested. Biopsies of tick attachment sites were examined histologically. All attachment sites showed acute inflammatory lesions, and sites of both tick species on high resistance cattle showed delayed hypersensitive reactions with intra-epidermal pustulation and significant increases …