Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil.
Abstract: In order to verify the oestrus activity and to observe the body weight of Saanen goats, when reared in intensive condition of Northeast Brazil during four different seasons, ten adult Saanen goats were used. In this experiment four climatic seasons were considered; early rainy (ER), late rainy (LR), early dry (ED) and late dry (LD). Oestrus behaviour was monitored twice a day (8:00 a.m. and 4:00 p.m.) during all the experiment, using two vasectomised bucks. The oestrus cycles were quantified within each season and classified as short (< 17 days), normal (17-25 days) or long (> 25 days). The goats were weighed every seven days. During the late rainy season, a significant fall of the mean body weight of the animals was observed when compared to early rainy season. A larger percentage of goats in oestrus were observed during the late rainy season. Oestrus duration was longer in the late rainy and early dry season than in early rainy and late dry season. During the experiment, there were 12.0% of short cycles, 50.3% of normal cycles and 37.7% of long cycles. The percentages of abnormal cycles (short and long cycles), in relation to total cycles monitored in each season were 52, 58, 38 and 50% for early rainy, late rainy, early dry and late dry, respectively. From the results of this study it can be concluded that pen-fed Saanen goats do not show seasonality for oestrus behaviour. Rainfall appeared to be an extero-receptive factor influencing the quality of sexual activity and performance in these goats.
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Format: | Artigo de periódico biblioteca |
Language: | pt_BR por |
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2017-09-08
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Subjects: | Northeast Brazil, Sazonalidade, Brasil, Região Nordeste, Oestrous cycle, Seasonality., Caprino, Reprodução animal, Ciclo estral, Goats, Reproduction., |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075227 |
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dig-alice-doc-10752272017-09-12T07:39:58Z Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. LOPES JUNIOR, E. S. RONDINA, D. SIMPLÍCIO, A. A. FREITAS, V. J. F. Pós-Graduação - UECE - Fortaleza, CE, Brazil; Davide Rondina, UECE; Aurino Alves Simplício, CNPC; Vicente José de Figueirêdo Freitas. Northeast Brazil Sazonalidade Brasil Região Nordeste Oestrous cycle Seasonality. Caprino Reprodução animal Ciclo estral Goats Reproduction. Abstract: In order to verify the oestrus activity and to observe the body weight of Saanen goats, when reared in intensive condition of Northeast Brazil during four different seasons, ten adult Saanen goats were used. In this experiment four climatic seasons were considered; early rainy (ER), late rainy (LR), early dry (ED) and late dry (LD). Oestrus behaviour was monitored twice a day (8:00 a.m. and 4:00 p.m.) during all the experiment, using two vasectomised bucks. The oestrus cycles were quantified within each season and classified as short (< 17 days), normal (17-25 days) or long (> 25 days). The goats were weighed every seven days. During the late rainy season, a significant fall of the mean body weight of the animals was observed when compared to early rainy season. A larger percentage of goats in oestrus were observed during the late rainy season. Oestrus duration was longer in the late rainy and early dry season than in early rainy and late dry season. During the experiment, there were 12.0% of short cycles, 50.3% of normal cycles and 37.7% of long cycles. The percentages of abnormal cycles (short and long cycles), in relation to total cycles monitored in each season were 52, 58, 38 and 50% for early rainy, late rainy, early dry and late dry, respectively. From the results of this study it can be concluded that pen-fed Saanen goats do not show seasonality for oestrus behaviour. Rainfall appeared to be an extero-receptive factor influencing the quality of sexual activity and performance in these goats. 2017-09-10T00:26:20Z 2017-09-10T00:26:20Z 2017-09-08 2001 2017-09-10T00:26:20Z Artigo de periódico Livestock Research for Rural Development, v. 13, n. 6, p. 1-11, 2001. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075227 pt_BR por openAccess |
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Northeast Brazil Sazonalidade Brasil Região Nordeste Oestrous cycle Seasonality. Caprino Reprodução animal Ciclo estral Goats Reproduction. Northeast Brazil Sazonalidade Brasil Região Nordeste Oestrous cycle Seasonality. Caprino Reprodução animal Ciclo estral Goats Reproduction. |
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Northeast Brazil Sazonalidade Brasil Região Nordeste Oestrous cycle Seasonality. Caprino Reprodução animal Ciclo estral Goats Reproduction. Northeast Brazil Sazonalidade Brasil Região Nordeste Oestrous cycle Seasonality. Caprino Reprodução animal Ciclo estral Goats Reproduction. LOPES JUNIOR, E. S. RONDINA, D. SIMPLÍCIO, A. A. FREITAS, V. J. F. Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. |
description |
Abstract: In order to verify the oestrus activity and to observe the body weight of Saanen goats, when reared in intensive condition of Northeast Brazil during four different seasons, ten adult Saanen goats were used. In this experiment four climatic seasons were considered; early rainy (ER), late rainy (LR), early dry (ED) and late dry (LD). Oestrus behaviour was monitored twice a day (8:00 a.m. and 4:00 p.m.) during all the experiment, using two vasectomised bucks. The oestrus cycles were quantified within each season and classified as short (< 17 days), normal (17-25 days) or long (> 25 days). The goats were weighed every seven days. During the late rainy season, a significant fall of the mean body weight of the animals was observed when compared to early rainy season. A larger percentage of goats in oestrus were observed during the late rainy season. Oestrus duration was longer in the late rainy and early dry season than in early rainy and late dry season. During the experiment, there were 12.0% of short cycles, 50.3% of normal cycles and 37.7% of long cycles. The percentages of abnormal cycles (short and long cycles), in relation to total cycles monitored in each season were 52, 58, 38 and 50% for early rainy, late rainy, early dry and late dry, respectively. From the results of this study it can be concluded that pen-fed Saanen goats do not show seasonality for oestrus behaviour. Rainfall appeared to be an extero-receptive factor influencing the quality of sexual activity and performance in these goats. |
author2 |
Pós-Graduação - UECE - Fortaleza, CE, Brazil; Davide Rondina, UECE; Aurino Alves Simplício, CNPC; Vicente José de Figueirêdo Freitas. |
author_facet |
Pós-Graduação - UECE - Fortaleza, CE, Brazil; Davide Rondina, UECE; Aurino Alves Simplício, CNPC; Vicente José de Figueirêdo Freitas. LOPES JUNIOR, E. S. RONDINA, D. SIMPLÍCIO, A. A. FREITAS, V. J. F. |
format |
Artigo de periódico |
topic_facet |
Northeast Brazil Sazonalidade Brasil Região Nordeste Oestrous cycle Seasonality. Caprino Reprodução animal Ciclo estral Goats Reproduction. |
author |
LOPES JUNIOR, E. S. RONDINA, D. SIMPLÍCIO, A. A. FREITAS, V. J. F. |
author_sort |
LOPES JUNIOR, E. S. |
title |
Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. |
title_short |
Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. |
title_full |
Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. |
title_fullStr |
Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. |
title_full_unstemmed |
Oestrus behaviour and performance in vivo of Saanen goats raised in northeast of Brazil. |
title_sort |
oestrus behaviour and performance in vivo of saanen goats raised in northeast of brazil. |
publishDate |
2017-09-08 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075227 |
work_keys_str_mv |
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_version_ |
1756023743903170560 |