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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
14/03/2022 |
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Actualizado : |
14/03/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MIRABALLES, C.; TAÑO, M.; RIET-CORREA, F. |
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Afiliación : |
MÓNICA CECILIA MIRABALLES FERRER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MANUEL TAÑO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Programa de pós-graduação em Ciência Animal nos Trópicos, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, CEP 40170, Brazil. |
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Título : |
Evaluation of the one-side tick counting technique and of the level of infestation of bovines with Rhipicephalus microplus. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Experimental and Applied Acarology, 2022. [Article In Press]. doi: https://doi.org/10.1007/s10493-022-00691-1 |
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ISSN : |
0168-8162 |
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DOI : |
10.1007/s10493-022-00691-1 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 12 December 2020; Accepted: 18 January 2022.
Corresponding author: Riet-Correa, F.; Programa de pós-graduação em Ciência Animal nos Trópicos, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, Brazil; email:franklinrietcorrea@gmail.com -- Funding text: We would like to acknowledge Dr. Javier Sanchez and Dr. Henrik Stryhn for collaborating with the data analysis and Tatiana Saporitti for performing the acaricide resistance tests. The research presented in this publication was supported by funds from the National Agency for Research and Innovation (ANII) under code MOV_IDRC_2018_2_153357. |
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Contenido : |
ABSTRACT. - Counting ticks on one side of a bovine has been widely used to estimate the overall number of ticks; however, the accuracy of this method has not been determined. This work aimed to evaluate the one-side technique for counting ticks, identify bovines with a higher level of infestation, and determine the prevalence of infestation of adults and calves. To evaluate the one-side technique, ticks were counted on both sides of 352 bovines from three farms in nine months, and total numbers were correlated with the numbers counted on the left sides. The intraclass correlation coefficients reached values >0.99 for all farms, independent of the season. These results demonstrated that counting ticks on one-side and multiplying by 2 is a reliable method for estimating the overall number of ticks. To evaluate the level of infestation of various bovines, ticks were counted monthly, for 12 months, on the same bovines from seven farms. An animal was considered highly infested if the Anscombe residuals from a negative binomial GLM were ≥4, at least 2×. The number of bovines with infestation levels higher than expected varied among farms from zero to 3. Using this method, it is possible to evaluate the most infested bovines in order to remove them from the herd. The prevalence of infestation in calves reached 100% in five of the seven farms and 3- to 15-month-old calves had significantly higher infestation than adults.
© 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG. MenosABSTRACT. - Counting ticks on one side of a bovine has been widely used to estimate the overall number of ticks; however, the accuracy of this method has not been determined. This work aimed to evaluate the one-side technique for counting ticks, identify bovines with a higher level of infestation, and determine the prevalence of infestation of adults and calves. To evaluate the one-side technique, ticks were counted on both sides of 352 bovines from three farms in nine months, and total numbers were correlated with the numbers counted on the left sides. The intraclass correlation coefficients reached values >0.99 for all farms, independent of the season. These results demonstrated that counting ticks on one-side and multiplying by 2 is a reliable method for estimating the overall number of ticks. To evaluate the level of infestation of various bovines, ticks were counted monthly, for 12 months, on the same bovines from seven farms. An animal was considered highly infested if the Anscombe residuals from a negative binomial GLM were ≥4, at least 2×. The number of bovines with infestation levels higher than expected varied among farms from zero to 3. Using this method, it is possible to evaluate the most infested bovines in order to remove them from the herd. The prevalence of infestation in calves reached 100% in five of the seven farms and 3- to 15-month-old calves had significantly higher infestation than adults.
© 2022, The Author(s), under exclusive licence to Spri... Presentar Todo |
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Palabras claves : |
Acaricides; Cattle; Counting ticks; Integrated pest management; PLATAFORMA SALUD ANIMAL; Tick burden; Ticks. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 03034naa a2200265 a 4500
001 1062827
005 2022-03-14
008 2022 bl uuuu u00u1 u #d
022 $a0168-8162
024 7 $a10.1007/s10493-022-00691-1$2DOI
100 1 $aMIRABALLES, C.
245 $aEvaluation of the one-side tick counting technique and of the level of infestation of bovines with Rhipicephalus microplus.$h[electronic resource]
260 $c2022
500 $aArticle history: Received: 12 December 2020; Accepted: 18 January 2022. Corresponding author: Riet-Correa, F.; Programa de pós-graduação em Ciência Animal nos Trópicos, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, Brazil; email:franklinrietcorrea@gmail.com -- Funding text: We would like to acknowledge Dr. Javier Sanchez and Dr. Henrik Stryhn for collaborating with the data analysis and Tatiana Saporitti for performing the acaricide resistance tests. The research presented in this publication was supported by funds from the National Agency for Research and Innovation (ANII) under code MOV_IDRC_2018_2_153357.
520 $aABSTRACT. - Counting ticks on one side of a bovine has been widely used to estimate the overall number of ticks; however, the accuracy of this method has not been determined. This work aimed to evaluate the one-side technique for counting ticks, identify bovines with a higher level of infestation, and determine the prevalence of infestation of adults and calves. To evaluate the one-side technique, ticks were counted on both sides of 352 bovines from three farms in nine months, and total numbers were correlated with the numbers counted on the left sides. The intraclass correlation coefficients reached values >0.99 for all farms, independent of the season. These results demonstrated that counting ticks on one-side and multiplying by 2 is a reliable method for estimating the overall number of ticks. To evaluate the level of infestation of various bovines, ticks were counted monthly, for 12 months, on the same bovines from seven farms. An animal was considered highly infested if the Anscombe residuals from a negative binomial GLM were ≥4, at least 2×. The number of bovines with infestation levels higher than expected varied among farms from zero to 3. Using this method, it is possible to evaluate the most infested bovines in order to remove them from the herd. The prevalence of infestation in calves reached 100% in five of the seven farms and 3- to 15-month-old calves had significantly higher infestation than adults. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
653 $aAcaricides
653 $aCattle
653 $aCounting ticks
653 $aIntegrated pest management
653 $aPLATAFORMA SALUD ANIMAL
653 $aTick burden
653 $aTicks
700 1 $aTAÑO, M.
700 1 $aRIET-CORREA, F.
773 $tExperimental and Applied Acarology, 2022. [Article In Press]. doi: https://doi.org/10.1007/s10493-022-00691-1
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
12/09/2014 |
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Actualizado : |
29/01/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
B - 1 |
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Autor : |
UNGERFELD, R.; QUINTANS, G.; ENRÍQUEZ, D.H.; HÖTZEL, M.J. |
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Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Behavioural changes at weaning in 6-month-old beef calves reared by cows of high or low milk yield. |
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Fecha de publicación : |
2009 |
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Fuente / Imprenta : |
Animal Production Science, 2009, v. 49, no. 8, p. 637-642. |
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DOI : |
10.1071/AN09037 |
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Idioma : |
Inglés |
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Notas : |
Article history: Manuscript received 5 March 2009, accepted 9 May 2009. |
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Contenido : |
Abstract:
The objective of this experiment was to determine the differences in behavioural changes observed in 6-month-old beef calves at weaning in relation to milk yield availability from their dams. Eighteen Hereford or Hereford· Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment (194.1 1.9 days after calving). On day 0, calves were moved to a 100-m2 corral far from their mothers, which were taken to a field more than 1000 m away, and returned to the original paddock on day 1. Milk production was determined monthly during the lactation period in 14 of the 18 cows. Calves? behaviour was recorded using instantaneous sampling of individual animals in each group every 10 min from 0800 to 0950, 1200 to 1350, and 1600 to 1750 hours. Recordings were performed from day ?3 to day 5, except on day 0. The calves from the five cows with higher milk yield (HMY) and the calves from the five cows with lower milk yield (LMY) were considered for data analysis. Milk yield was greater in HMY than LMY cows throughout all the lactation. HMY calves tended to suckle more frequently than LMY calves. There were no differences in average daily gain after weaning between HMY and LMY calves. However, HMY calves were heavier at weaning than LMY calves. The frequency of grazing, ruminating, walking and standing differed between HMY and LMY calves, and was affected by weaning. For example, calves from HMY cows spent less time grazing before and after weaning than calves from LMY cows. There were also interactions between group and time on the frequency of these behaviours. Overall, we conclude that the behaviour of 6-month-old beef calves at weaning differed according to their mothers? milk yield, and their developmental growth stage. MenosAbstract:
The objective of this experiment was to determine the differences in behavioural changes observed in 6-month-old beef calves at weaning in relation to milk yield availability from their dams. Eighteen Hereford or Hereford· Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment (194.1 1.9 days after calving). On day 0, calves were moved to a 100-m2 corral far from their mothers, which were taken to a field more than 1000 m away, and returned to the original paddock on day 1. Milk production was determined monthly during the lactation period in 14 of the 18 cows. Calves? behaviour was recorded using instantaneous sampling of individual animals in each group every 10 min from 0800 to 0950, 1200 to 1350, and 1600 to 1750 hours. Recordings were performed from day ?3 to day 5, except on day 0. The calves from the five cows with higher milk yield (HMY) and the calves from the five cows with lower milk yield (LMY) were considered for data analysis. Milk yield was greater in HMY than LMY cows throughout all the lactation. HMY calves tended to suckle more frequently than LMY calves. There were no differences in average daily gain after weaning between HMY and LMY calves. However, HMY calves were heavier at weaning than LMY calves. The frequency of grazing, ruminating, walking and standing differed between HMY and LMY calves, and was affected by weaning. For example, calves from HMY cows spent less time g... Presentar Todo |
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Palabras claves : |
BEEF CALVES. |
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Thesagro : |
DESTETE PRECOZ; GANADO LECHERO; TERNEROS. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 02548naa a2200229 a 4500
001 1050221
005 2020-01-29
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1071/AN09037$2DOI
100 1 $aUNGERFELD, R.
245 $aBehavioural changes at weaning in 6-month-old beef calves reared by cows of high or low milk yield.$h[electronic resource]
260 $c2009
500 $aArticle history: Manuscript received 5 March 2009, accepted 9 May 2009.
520 $aAbstract: The objective of this experiment was to determine the differences in behavioural changes observed in 6-month-old beef calves at weaning in relation to milk yield availability from their dams. Eighteen Hereford or Hereford· Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment (194.1 1.9 days after calving). On day 0, calves were moved to a 100-m2 corral far from their mothers, which were taken to a field more than 1000 m away, and returned to the original paddock on day 1. Milk production was determined monthly during the lactation period in 14 of the 18 cows. Calves? behaviour was recorded using instantaneous sampling of individual animals in each group every 10 min from 0800 to 0950, 1200 to 1350, and 1600 to 1750 hours. Recordings were performed from day ?3 to day 5, except on day 0. The calves from the five cows with higher milk yield (HMY) and the calves from the five cows with lower milk yield (LMY) were considered for data analysis. Milk yield was greater in HMY than LMY cows throughout all the lactation. HMY calves tended to suckle more frequently than LMY calves. There were no differences in average daily gain after weaning between HMY and LMY calves. However, HMY calves were heavier at weaning than LMY calves. The frequency of grazing, ruminating, walking and standing differed between HMY and LMY calves, and was affected by weaning. For example, calves from HMY cows spent less time grazing before and after weaning than calves from LMY cows. There were also interactions between group and time on the frequency of these behaviours. Overall, we conclude that the behaviour of 6-month-old beef calves at weaning differed according to their mothers? milk yield, and their developmental growth stage.
650 $aDESTETE PRECOZ
650 $aGANADO LECHERO
650 $aTERNEROS
653 $aBEEF CALVES
700 1 $aQUINTANS, G.
700 1 $aENRÍQUEZ, D.H.
700 1 $aHÖTZEL, M.J.
773 $tAnimal Production Science, 2009$gv. 49, no. 8, p. 637-642.
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