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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
01/07/2020 |
Actualizado : |
06/06/2023 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
SAVIAN, J.V.; SCHONS, R.M.T.; MEZZALIRA, J.C.; BARTH NETO, A.; NETO, G.F. DA SILVA; BENVENUTTI, M.A.; CARVALHO, P.C. DE F. |
Afiliación : |
JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay // Grazing Ecology Research Group, Federal University of Rio Grande do Sul. RS, Brazil.; R.M.T. SCHONS, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brasil.; J. C. MEZZALIRA, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brasil.; A. BARTH NETO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brasil.; G. F. DA SILVA NETO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brasil.; Queenland Department of Agriculture and Fisheries, Australia.; P.C. DE F. CARVALHO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brasil. |
Título : |
A comparison of two rotational stocking strategies on the foraging behaviour and herbage intake by grazing sheep. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Animal, 2020, Volume 14, issue 12, pp. 2503-2510. https://doi.org/10.1017/S1751731120001251 -- OPEN ACCESS. |
ISSN : |
1751-7311 (Print); 1751-732X (Online). |
DOI : |
10.1017/S1751731120001251 |
Idioma : |
Inglés |
Notas : |
Article history: Received 5 March 2018; Accepted 22 May 2020. Published online by Cambridge University Press: 16 June 2020. -- |
Contenido : |
Abstract:
An understanding of the processes involved in grazing behaviour is a prerequisite for the design of efficient grassland management systems. The purpose of managing the grazing process is to identify sward structures that can maximize animal forage daily intake and optimize grazing time. Our aim was to evaluate the effect of different grazing management strategies on foraging behaviour and herbage intake by sheep grazing Italian ryegrass under rotational stocking. The experiment was carried out in 2015 in southern Brazil. The experimental design was a randomized complete block with two grazing management strategies and four replicates. The grazing management treatments were a traditional rotational stocking (RT), with pre- and post-grazing sward heights of 25 and 5 cm, respectively, and a ?Rotatinuous? stocking (RN) with pre- and post-grazing sward heights of 18 and 11 cm, respectively. Male sheep with an average live weight of 32 ± 2.3 kg were used. As intended, the preand post-grazing sward heights were according to the treatments. The pre-grazing leaf/stem ratio of the Italian ryegrass pasture did not differ between treatments (P > 0.05) (~2.87), but the post-grazing leaf/stem ratio was greater (P < 0.001) in the RN than in the RT treatment (1.59 and 0.76, respectively). The percentage of the non-grazed area was greater (P < 0.01) in post-grazing for RN compared with RT treatment, with an average of 29.7% and 3.49%, respectively. Herbage nutritive value was greater for the RN than for the RT treatment, with greater CP and lower ADF and NDF contents. The total time spent grazing, ruminating
and resting did not differ between treatments (P > 0.05), with averages of 439, 167 and 85 min, respectively. The bite rate, feeding stations per min and steps per min by sheep were greater (P < 0.05) in the RN than in the RT treatment. The grazing time per hour and the bite rate were greater (P < 0.05) in the afternoon than in the morning in both treatments. The daily herbage intake by sheep grazing Italian ryegrass was greater (P < 0.05) in the RN than in the RT treatment (843.7 and 707.8 g
organic matter/sheep, respectively). Our study supports the idea that even though the grazing time was not affected by the grazing management strategies when the animal behaviour responses drive management targets, such as in ?Rotatinuous? stocking, the sheep herbage intake is maximized, and the grazing time is optimized. MenosAbstract:
An understanding of the processes involved in grazing behaviour is a prerequisite for the design of efficient grassland management systems. The purpose of managing the grazing process is to identify sward structures that can maximize animal forage daily intake and optimize grazing time. Our aim was to evaluate the effect of different grazing management strategies on foraging behaviour and herbage intake by sheep grazing Italian ryegrass under rotational stocking. The experiment was carried out in 2015 in southern Brazil. The experimental design was a randomized complete block with two grazing management strategies and four replicates. The grazing management treatments were a traditional rotational stocking (RT), with pre- and post-grazing sward heights of 25 and 5 cm, respectively, and a ?Rotatinuous? stocking (RN) with pre- and post-grazing sward heights of 18 and 11 cm, respectively. Male sheep with an average live weight of 32 ± 2.3 kg were used. As intended, the preand post-grazing sward heights were according to the treatments. The pre-grazing leaf/stem ratio of the Italian ryegrass pasture did not differ between treatments (P > 0.05) (~2.87), but the post-grazing leaf/stem ratio was greater (P < 0.001) in the RN than in the RT treatment (1.59 and 0.76, respectively). The percentage of the non-grazed area was greater (P < 0.01) in post-grazing for RN compared with RT treatment, with an average of 29.7% and 3.49%, respectively. Herbage nutritive value was great... Presentar Todo |
Palabras claves : |
GRAZING BEHAVIOUR; GRAZING MANAGEMENT; INTAKE RATE; ITALIAN RYEGRASS; SWARD STRUCTURE. |
Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo |
URL : |
https://www.sciencedirect.com/science/article/pii/S1751731120001251/pdf
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Marc : |
LEADER 03525naa a2200289 a 4500 001 1061176 005 2023-06-06 008 2020 bl uuuu u00u1 u #d 022 $a1751-7311 (Print); 1751-732X (Online). 024 7 $a10.1017/S1751731120001251$2DOI 100 1 $aSAVIAN, J.V. 245 $aA comparison of two rotational stocking strategies on the foraging behaviour and herbage intake by grazing sheep.$h[electronic resource] 260 $c2020 500 $aArticle history: Received 5 March 2018; Accepted 22 May 2020. Published online by Cambridge University Press: 16 June 2020. -- 520 $aAbstract: An understanding of the processes involved in grazing behaviour is a prerequisite for the design of efficient grassland management systems. The purpose of managing the grazing process is to identify sward structures that can maximize animal forage daily intake and optimize grazing time. Our aim was to evaluate the effect of different grazing management strategies on foraging behaviour and herbage intake by sheep grazing Italian ryegrass under rotational stocking. The experiment was carried out in 2015 in southern Brazil. The experimental design was a randomized complete block with two grazing management strategies and four replicates. The grazing management treatments were a traditional rotational stocking (RT), with pre- and post-grazing sward heights of 25 and 5 cm, respectively, and a ?Rotatinuous? stocking (RN) with pre- and post-grazing sward heights of 18 and 11 cm, respectively. Male sheep with an average live weight of 32 ± 2.3 kg were used. As intended, the preand post-grazing sward heights were according to the treatments. The pre-grazing leaf/stem ratio of the Italian ryegrass pasture did not differ between treatments (P > 0.05) (~2.87), but the post-grazing leaf/stem ratio was greater (P < 0.001) in the RN than in the RT treatment (1.59 and 0.76, respectively). The percentage of the non-grazed area was greater (P < 0.01) in post-grazing for RN compared with RT treatment, with an average of 29.7% and 3.49%, respectively. Herbage nutritive value was greater for the RN than for the RT treatment, with greater CP and lower ADF and NDF contents. The total time spent grazing, ruminating and resting did not differ between treatments (P > 0.05), with averages of 439, 167 and 85 min, respectively. The bite rate, feeding stations per min and steps per min by sheep were greater (P < 0.05) in the RN than in the RT treatment. The grazing time per hour and the bite rate were greater (P < 0.05) in the afternoon than in the morning in both treatments. The daily herbage intake by sheep grazing Italian ryegrass was greater (P < 0.05) in the RN than in the RT treatment (843.7 and 707.8 g organic matter/sheep, respectively). Our study supports the idea that even though the grazing time was not affected by the grazing management strategies when the animal behaviour responses drive management targets, such as in ?Rotatinuous? stocking, the sheep herbage intake is maximized, and the grazing time is optimized. 653 $aGRAZING BEHAVIOUR 653 $aGRAZING MANAGEMENT 653 $aINTAKE RATE 653 $aITALIAN RYEGRASS 653 $aSWARD STRUCTURE 700 1 $aSCHONS, R.M.T. 700 1 $aMEZZALIRA, J.C. 700 1 $aBARTH NETO, A. 700 1 $aNETO, G.F. DA SILVA 700 1 $aBENVENUTTI, M.A. 700 1 $aCARVALHO, P.C. DE F. 773 $tAnimal, 2020, Volume 14, issue 12, pp. 2503-2510. https://doi.org/10.1017/S1751731120001251 -- OPEN ACCESS.
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
06/05/2016 |
Actualizado : |
11/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
B - A |
Autor : |
ALVEZ, P.; QUINTANS, G.; HÖTZEL, M.J.; UNGERFELD, R. |
Afiliación : |
Departamento de Fisiología, Facultad de Veterinaria, Montevideo, Uruguay.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Laboratorio de Etología Aplicada, Departamento de Zootecnia e Desenvolvimento Rural, UFSC, Brasil.; Departamento de Fisiología, Facultad de Veterinaria, Montevideo, Uruguay. |
Título : |
Two-step weaning in beef calves: Permanence of nose flaps for 7 or 21 days does not influence the behaviour response. |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
Animal Production Science, 2016, 56, p. 866-870. |
DOI : |
10.1071/AN14643 |
Idioma : |
Inglés |
Notas : |
Article history: Received 17 June 2014, accepted 5 October 2014, published online 12 February 2015. |
Contenido : |
Abstract.
Two-step weaning with nose flaps is used to minimise the stress of weaning in beef calves. Farmers leave the nose flaps for 7–30 days, basing the period on practical considerations. Thus, the objective of this study was to compare the behavioural response of 6-month-old beef calves fitted with nose flaps during 7 or 21 days before permanent separation from the dam, or abruptly weaned. Angus · Hereford cow-calf pairs were assigned to: (1) calves fitted with nose flaps on Day –7 and permanently separated from their mothers on Day 0 (NF7), (2) calves fitted with nose flaps on Day –21 and permanently separated from their mothers on Day 0 (NF21), and (3) calves abruptly weaned on Day 0 (CON). Behaviours (standing, lying, walking pacing, grazing, ruminating and vocalisations) were recorded during 3 days before and 5 days after permanent separation from the dam. On Days 1–3, standing and grazing behaviours decreased, whereas walking, pacing and vocalising increased in CON calves but not in NF7 or NF21 calves. Control calves differed from NF7 and NF21 calves for all these behaviours. The two nose flap treatments differed only on Day 1, when the changes in the frequency of walking, lying and standing were smaller in NF7 than NF21 calves. In conclusion, nose flaps can be used for periods from 7 to 21 days before permanent separation from the dam, diminishing the behavioural indicators of distress provoked by weaning. |
Palabras claves : |
ANIMAL WELFARE; NURSING; STRESS; SUCKLING; VOCALISATION. |
Thesagro : |
BOVINOS DE CARNE; DESTETE; TABLILLA NASAL. |
Asunto categoría : |
L10 Genética y mejoramiento animal |
Marc : |
LEADER 02320naa a2200277 a 4500 001 1054796 005 2019-10-11 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1071/AN14643$2DOI 100 1 $aALVEZ, P. 245 $aTwo-step weaning in beef calves$bPermanence of nose flaps for 7 or 21 days does not influence the behaviour response.$h[electronic resource] 260 $c2016 500 $aArticle history: Received 17 June 2014, accepted 5 October 2014, published online 12 February 2015. 520 $aAbstract. Two-step weaning with nose flaps is used to minimise the stress of weaning in beef calves. Farmers leave the nose flaps for 7–30 days, basing the period on practical considerations. Thus, the objective of this study was to compare the behavioural response of 6-month-old beef calves fitted with nose flaps during 7 or 21 days before permanent separation from the dam, or abruptly weaned. Angus · Hereford cow-calf pairs were assigned to: (1) calves fitted with nose flaps on Day –7 and permanently separated from their mothers on Day 0 (NF7), (2) calves fitted with nose flaps on Day –21 and permanently separated from their mothers on Day 0 (NF21), and (3) calves abruptly weaned on Day 0 (CON). Behaviours (standing, lying, walking pacing, grazing, ruminating and vocalisations) were recorded during 3 days before and 5 days after permanent separation from the dam. On Days 1–3, standing and grazing behaviours decreased, whereas walking, pacing and vocalising increased in CON calves but not in NF7 or NF21 calves. Control calves differed from NF7 and NF21 calves for all these behaviours. The two nose flap treatments differed only on Day 1, when the changes in the frequency of walking, lying and standing were smaller in NF7 than NF21 calves. In conclusion, nose flaps can be used for periods from 7 to 21 days before permanent separation from the dam, diminishing the behavioural indicators of distress provoked by weaning. 650 $aBOVINOS DE CARNE 650 $aDESTETE 650 $aTABLILLA NASAL 653 $aANIMAL WELFARE 653 $aNURSING 653 $aSTRESS 653 $aSUCKLING 653 $aVOCALISATION 700 1 $aQUINTANS, G. 700 1 $aHÖTZEL, M.J. 700 1 $aUNGERFELD, R. 773 $tAnimal Production Science, 2016, 56, p. 866-870.
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