Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations

Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations

Twelve two-year old heifers were selected as relatively tick-resistance and 12 as relatively tick-susceptible. Each of these groups was divided at random into herds of six. A herd was sprayed with 0.5 percent DDT emulsion when its average count of ticks (adult females over 5 mm in length) on one side of the animals exceeded 40. There was no significant correlation between tick resitance and coat score, sweat gland dimensions, or total skin thickness. There was no evidence of adaptation of cattle ticks to the resistant animals, either in the field experiment or in observations on stalled cattle

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Bibliographic Details
Main Author: 131528 Wilkinson, P.R.
Format: biblioteca
Published: 1962
Subjects:GANADO BOVINO, SALUD ANIMAL, ECTOPARASITOS, BOOPHILUS, SELECCION, RESISTENCIA A LOS PARASITOS,
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id KOHA-OAI-BVE:43767
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spelling KOHA-OAI-BVE:437672020-02-03T21:07:17ZSelection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations 131528 Wilkinson, P.R. 1962Twelve two-year old heifers were selected as relatively tick-resistance and 12 as relatively tick-susceptible. Each of these groups was divided at random into herds of six. A herd was sprayed with 0.5 percent DDT emulsion when its average count of ticks (adult females over 5 mm in length) on one side of the animals exceeded 40. There was no significant correlation between tick resitance and coat score, sweat gland dimensions, or total skin thickness. There was no evidence of adaptation of cattle ticks to the resistant animals, either in the field experiment or in observations on stalled cattleTwelve two-year old heifers were selected as relatively tick-resistance and 12 as relatively tick-susceptible. Each of these groups was divided at random into herds of six. A herd was sprayed with 0.5 percent DDT emulsion when its average count of ticks (adult females over 5 mm in length) on one side of the animals exceeded 40. There was no significant correlation between tick resitance and coat score, sweat gland dimensions, or total skin thickness. There was no evidence of adaptation of cattle ticks to the resistant animals, either in the field experiment or in observations on stalled cattleGANADO BOVINOSALUD ANIMALECTOPARASITOSBOOPHILUSSELECCIONRESISTENCIA A LOS PARASITOSAustralian Journal of Agricultural Research (Australia)
institution IICA
collection Koha
country Costa Rica
countrycode CR
component Bibliográfico
access En linea
databasecode cat-sibiica
tag biblioteca
region America Central
libraryname Sistema de Bibliotecas IICA/CATIE
topic GANADO BOVINO
SALUD ANIMAL
ECTOPARASITOS
BOOPHILUS
SELECCION
RESISTENCIA A LOS PARASITOS
GANADO BOVINO
SALUD ANIMAL
ECTOPARASITOS
BOOPHILUS
SELECCION
RESISTENCIA A LOS PARASITOS
spellingShingle GANADO BOVINO
SALUD ANIMAL
ECTOPARASITOS
BOOPHILUS
SELECCION
RESISTENCIA A LOS PARASITOS
GANADO BOVINO
SALUD ANIMAL
ECTOPARASITOS
BOOPHILUS
SELECCION
RESISTENCIA A LOS PARASITOS
131528 Wilkinson, P.R.
Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations
description Twelve two-year old heifers were selected as relatively tick-resistance and 12 as relatively tick-susceptible. Each of these groups was divided at random into herds of six. A herd was sprayed with 0.5 percent DDT emulsion when its average count of ticks (adult females over 5 mm in length) on one side of the animals exceeded 40. There was no significant correlation between tick resitance and coat score, sweat gland dimensions, or total skin thickness. There was no evidence of adaptation of cattle ticks to the resistant animals, either in the field experiment or in observations on stalled cattle
format
topic_facet GANADO BOVINO
SALUD ANIMAL
ECTOPARASITOS
BOOPHILUS
SELECCION
RESISTENCIA A LOS PARASITOS
author 131528 Wilkinson, P.R.
author_facet 131528 Wilkinson, P.R.
author_sort 131528 Wilkinson, P.R.
title Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations
title_short Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations
title_full Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations
title_fullStr Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations
title_full_unstemmed Selection of cattle for tick resistance, and the effect of herds of different susceptibility on Boophilus populations
title_sort selection of cattle for tick resistance, and the effect of herds of different susceptibility on boophilus populations
publishDate 1962
work_keys_str_mv AT 131528wilkinsonpr selectionofcattlefortickresistanceandtheeffectofherdsofdifferentsusceptibilityonboophiluspopulations
_version_ 1756053757524705280

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