Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.

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The objective of this study was to determine the effect of the length of the suckling period and the dietary energy level on the duration of postpartum anestrus in Creole goats. Twenty-eight multiparous pregnant goats (bodyweight BW 39.9 ± 6.4 kg; mean ± SEM) each bearing a single fetus were used in...

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Autores principales: Paez Lama, Sebastián Antonio, Grilli, Diego, Egea, Vanina, Fucili, Mercedes, Allegretti, Liliana, Guevara, Juan Carlos, Jahn, Graciela Alma
Formato: Institucional - Material de Difusión
Lenguaje:Inglés
Publicado: Comité editorial Small Ruminant Research 2020
Materias:
Goats
Reproduction
Anestrus
Dietary energy
Suckling
Acceso en línea:http://repositorio.umaza.edu.ar//handle/00261/1803
https://www.sciencedirect.com/science/article/abs/pii/S0921448816300955#!
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UMAZA Digital (Universidad MAZA - Mendoza) de Universidad Juan Agustín MAZA
id I56-R162-00261-1803
record_format dspace
spelling I56-R162-00261-18032023-09-14T02:06:07Z Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats. Paez Lama, Sebastián Antonio Grilli, Diego Egea, Vanina Fucili, Mercedes Allegretti, Liliana Guevara, Juan Carlos Jahn, Graciela Alma Goats Reproduction Anestrus Dietary energy Suckling The objective of this study was to determine the effect of the length of the suckling period and the dietary energy level on the duration of postpartum anestrus in Creole goats. Twenty-eight multiparous pregnant goats (bodyweight BW 39.9 ± 6.4 kg; mean ± SEM) each bearing a single fetus were used in a 2 suckling period (30 vs. 60 d) × 2 levels of energy intake (low (L) vs. high (H)) factorial design. Kids were separated from their dams 3 d after birth and then suckled twice per day until weaned at 30 or 60 d postpartum. Dams weaned at 30 d postpartum were hand milked for the next 30 d. Goats were individually fed chopped alfalfa hay + balanced concentrates (45:55 DM basis) at 3% of BW in the last month of pregnancy and at the same level to the L goats in the postpartum period when the H goats were fed at 4% of BW. Energy balance was estimated by difference between energy intake and calculated energy requirements. Duration of postpartum anestrus was estimated by determining the occurrence of ovulation from changes in blood progesterone concentrations. There were no significant lengths of suckling x energy intake level interactions. Goats on all treatments lost weight until 45 d postpartum with more weight loss on the low than the high energy intake level (L 4.06 ± 0.43 vs. H 1.99 ± 0.64 kg;P < 0.05). The daily 4% FCM production was similar for all treatments (overall mean 1.10 ± 0.01 kg). The difference between the postpartum anestrus period between low (129 d) and high (128 d) dietary energy levels was not significant but no goat ovulated while in negative energy balance. The effect of suckling on the resumption of ovarian activity was highly significant (P < 0.001) with goats weaned 30 d postpartum resuming ovulation 102 d after parturition compared to 155 d for those weaned 60 d postpartum. This study illustrates the importance of the bond between the doe and its kid in the prolongation of the anestrus period in goats. 2020-10-23T12:13:03Z 2020-10-23T12:13:03Z 2016-04-16 Institucional - Material de Difusión Paez Lama, S. A., Grilli, D., Egea, V., Fucili, M., Allegretti, L., Guevara, J. C. y Jahn, G. A. (2016). Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats. Small Ruminant Research, 139, 1-6. http://dx.doi.org/10.1016/j.smallrumres.2016.04.007 0921-4488 http://repositorio.umaza.edu.ar//handle/00261/1803 https://www.sciencedirect.com/science/article/abs/pii/S0921448816300955#! eng image/png Comité editorial Small Ruminant Research 139;
institution Universidad Juan Agustín MAZA
institution_str I-56
repository_str R-162
collection UMAZA Digital (Universidad MAZA - Mendoza)
language Inglés
orig_language_str_mv eng
topic Goats
Reproduction
Anestrus
Dietary energy
Suckling
spellingShingle Goats
Reproduction
Anestrus
Dietary energy
Suckling
Paez Lama, Sebastián Antonio
Grilli, Diego
Egea, Vanina
Fucili, Mercedes
Allegretti, Liliana
Guevara, Juan Carlos
Jahn, Graciela Alma
Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.
topic_facet Goats
Reproduction
Anestrus
Dietary energy
Suckling
description The objective of this study was to determine the effect of the length of the suckling period and the dietary energy level on the duration of postpartum anestrus in Creole goats. Twenty-eight multiparous pregnant goats (bodyweight BW 39.9 ± 6.4 kg; mean ± SEM) each bearing a single fetus were used in a 2 suckling period (30 vs. 60 d) × 2 levels of energy intake (low (L) vs. high (H)) factorial design. Kids were separated from their dams 3 d after birth and then suckled twice per day until weaned at 30 or 60 d postpartum. Dams weaned at 30 d postpartum were hand milked for the next 30 d. Goats were individually fed chopped alfalfa hay + balanced concentrates (45:55 DM basis) at 3% of BW in the last month of pregnancy and at the same level to the L goats in the postpartum period when the H goats were fed at 4% of BW. Energy balance was estimated by difference between energy intake and calculated energy requirements. Duration of postpartum anestrus was estimated by determining the occurrence of ovulation from changes in blood progesterone concentrations. There were no significant lengths of suckling x energy intake level interactions. Goats on all treatments lost weight until 45 d postpartum with more weight loss on the low than the high energy intake level (L 4.06 ± 0.43 vs. H 1.99 ± 0.64 kg;P < 0.05). The daily 4% FCM production was similar for all treatments (overall mean 1.10 ± 0.01 kg). The difference between the postpartum anestrus period between low (129 d) and high (128 d) dietary energy levels was not significant but no goat ovulated while in negative energy balance. The effect of suckling on the resumption of ovarian activity was highly significant (P < 0.001) with goats weaned 30 d postpartum resuming ovulation 102 d after parturition compared to 155 d for those weaned 60 d postpartum. This study illustrates the importance of the bond between the doe and its kid in the prolongation of the anestrus period in goats.
format Institucional - Material de Difusión
author Paez Lama, Sebastián Antonio
Grilli, Diego
Egea, Vanina
Fucili, Mercedes
Allegretti, Liliana
Guevara, Juan Carlos
Jahn, Graciela Alma
author_facet Paez Lama, Sebastián Antonio
Grilli, Diego
Egea, Vanina
Fucili, Mercedes
Allegretti, Liliana
Guevara, Juan Carlos
Jahn, Graciela Alma
author_sort Paez Lama, Sebastián Antonio
title Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.
title_short Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.
title_full Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.
title_fullStr Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.
title_full_unstemmed Effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in Creole goats.
title_sort effect of the length of the suckling period and dietary energy intake in lactation on the duration of postpartum anestrus in creole goats.
publisher Comité editorial Small Ruminant Research
publishDate 2020
url http://repositorio.umaza.edu.ar//handle/00261/1803
https://www.sciencedirect.com/science/article/abs/pii/S0921448816300955#!
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