Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes
The impact of prepartum supplementation using a balanced diet incorporating salt as an intake regulator was assessed on maternal live weight, body condition, wool production, maternal and lamb behavior, and lamb growth up to 50 days of age in multiparous and primiparous Merino ewes under extensive g...
| Autores principales: | , , , , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/21553 https://www.sciencedirect.com/science/article/abs/pii/S0377840125000185 https://doi.org/10.1016/j.anifeedsci.2025.116223 |
| _version_ | 1855038422815604736 |
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| author | Cueto, Marcela Isabel Fernandez, Jimena Bruno Galarraga, María Macarena Gibbons, Alejandro Eduardo Riquelme, Maximiliano Castillo, Daniel Alejandro Tesan, Micaela Schaap, Bárbara Villar, Maria Laura Villagra, Edgar Sebastian |
| author_browse | Bruno Galarraga, María Macarena Castillo, Daniel Alejandro Cueto, Marcela Isabel Fernandez, Jimena Gibbons, Alejandro Eduardo Riquelme, Maximiliano Schaap, Bárbara Tesan, Micaela Villagra, Edgar Sebastian Villar, Maria Laura |
| author_facet | Cueto, Marcela Isabel Fernandez, Jimena Bruno Galarraga, María Macarena Gibbons, Alejandro Eduardo Riquelme, Maximiliano Castillo, Daniel Alejandro Tesan, Micaela Schaap, Bárbara Villar, Maria Laura Villagra, Edgar Sebastian |
| author_sort | Cueto, Marcela Isabel |
| collection | INTA Digital |
| description | The impact of prepartum supplementation using a balanced diet incorporating salt as an intake regulator was assessed on maternal live weight, body condition, wool production, maternal and lamb behavior, and lamb growth up to 50 days of age in multiparous and primiparous Merino ewes under extensive grazing. On day −65 prepartum (Day 0 = Partum), 80 pregnant Merino ewes carrying a single fetus (40 multiparous; 40 primiparous) from fixed-timed artificial insemination, were randomly assigned to one of two dietary treatments, each with one repetition: grazing only (Control group) or grazing plus ad libitum supplementation with a balanced food containing salt as an intake regulator (Suppl group) for 60 days (Days −65 to −5 prepartum). Behavioral and performance variables were monitored in ewes and lambs from −65 days prepartum until 50 days postpartum. Blood metabolites (glucose, total proteins, and urea) were assessed in ewes during the same period. On day −35 prepartum, ewes were subjected to shearing. From day −50 prepartum until 30 days postpartum, ewe BW was significantly higher in the Suppl multiparous group compared to the other groups (P < 0.05). A marginal increase of 220 g in greasy fleece weight was observed in Suppl ewes after 30 days of supplementation (P < 0.1). However, no significant effects were observed in maternal or lamb behavior, lamb birthweight or lamb survival (P > 0.05). A marginal increase in lamb weight on days 30 and 50 postpartum was observed in the Suppl group compared to the Control group (P < 0.1). An increase in total proteins and urea was observed on day −5 prepartum in the Suppl group compared to the Control group (P < 0.05). Lambs from primiparous ewes took longer to suck compared with lambs from multiparous ewes (P < 0.05). Also, lamb birthweight, lamb weight on days 30 and 50 postpartum were significantly higher in lambs from multiparous ewes compared to lambs from primiparous ewes (P < 0.05). Neonatal mortality was higher in primiparous than in multiparous ewes, with survival rates of 65 % and 91 %, respectively (P < 0.05). In conclusion, Suppl primiparous ewes evidenced an improved maternal body status during the peripartum period. Prepartum supplementation showed a marginal increase in greasy fleece weight. However, no significant effects were observed on maternal behavior, lamb survival or lamb growth. Primiparous ewes exhibited a 26 % higher neonatal mortality than multiparous ewes, likely attributable to their inexperienced maternal behavior. |
| format | info:ar-repo/semantics/artículo |
| id | INTA21553 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA215532025-03-06T11:56:48Z Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes Cueto, Marcela Isabel Fernandez, Jimena Bruno Galarraga, María Macarena Gibbons, Alejandro Eduardo Riquelme, Maximiliano Castillo, Daniel Alejandro Tesan, Micaela Schaap, Bárbara Villar, Maria Laura Villagra, Edgar Sebastian Cordero Oveja Suplementos Alimentarios Pastoreo Zona Semiárida Estepas Sal Período Perinatal Lambs Ewes Food Supplements Grazing Semiarid Zones Steppes Salts Perinatal Period Raza Merino The impact of prepartum supplementation using a balanced diet incorporating salt as an intake regulator was assessed on maternal live weight, body condition, wool production, maternal and lamb behavior, and lamb growth up to 50 days of age in multiparous and primiparous Merino ewes under extensive grazing. On day −65 prepartum (Day 0 = Partum), 80 pregnant Merino ewes carrying a single fetus (40 multiparous; 40 primiparous) from fixed-timed artificial insemination, were randomly assigned to one of two dietary treatments, each with one repetition: grazing only (Control group) or grazing plus ad libitum supplementation with a balanced food containing salt as an intake regulator (Suppl group) for 60 days (Days −65 to −5 prepartum). Behavioral and performance variables were monitored in ewes and lambs from −65 days prepartum until 50 days postpartum. Blood metabolites (glucose, total proteins, and urea) were assessed in ewes during the same period. On day −35 prepartum, ewes were subjected to shearing. From day −50 prepartum until 30 days postpartum, ewe BW was significantly higher in the Suppl multiparous group compared to the other groups (P < 0.05). A marginal increase of 220 g in greasy fleece weight was observed in Suppl ewes after 30 days of supplementation (P < 0.1). However, no significant effects were observed in maternal or lamb behavior, lamb birthweight or lamb survival (P > 0.05). A marginal increase in lamb weight on days 30 and 50 postpartum was observed in the Suppl group compared to the Control group (P < 0.1). An increase in total proteins and urea was observed on day −5 prepartum in the Suppl group compared to the Control group (P < 0.05). Lambs from primiparous ewes took longer to suck compared with lambs from multiparous ewes (P < 0.05). Also, lamb birthweight, lamb weight on days 30 and 50 postpartum were significantly higher in lambs from multiparous ewes compared to lambs from primiparous ewes (P < 0.05). Neonatal mortality was higher in primiparous than in multiparous ewes, with survival rates of 65 % and 91 %, respectively (P < 0.05). In conclusion, Suppl primiparous ewes evidenced an improved maternal body status during the peripartum period. Prepartum supplementation showed a marginal increase in greasy fleece weight. However, no significant effects were observed on maternal behavior, lamb survival or lamb growth. Primiparous ewes exhibited a 26 % higher neonatal mortality than multiparous ewes, likely attributable to their inexperienced maternal behavior. EEA Bariloche Fil: Cueto, Marcela Isabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Cueto, Marcela Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Fernandez, Jimena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Fernandez, Jimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Bruno Galarraga, María Macarena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Bruno Galarraga, María Macarena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Gibbons, Alejandro Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Gibbons, Alejandro Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Riquelme, Maximiliano. Actividad privada; Argentina Fil: Castillo, Daniel Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Castillo, Daniel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Tesan, Micaela. Universidad Nacional de Rio Negro. Facultad de Ciencias Veterinarias; Argentina Fil: Schaap, Bárbara. Universidad Nacional de Rio Negro. Facultad de Ciencias Veterinarias; Argentina Fil: Villar, Maria Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Villar, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Villagra, Edgar Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Villagra, Edgar Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Villagra, Edgar Sebastian. Universidad Nacional de Río Negro. Cátedras de Rumiantes Menores y Sistemas de Producción Bovina en Ecosistemas Frágiles; Argentina 2025-03-06T11:50:57Z 2025-03-06T11:50:57Z 2025-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21553 https://www.sciencedirect.com/science/article/abs/pii/S0377840125000185 0377-8401 1873-2216 https://doi.org/10.1016/j.anifeedsci.2025.116223 eng info:eu-repograntAgreement/INTA/2019-PD-E5-I107-001, Biotecnologías de la reproducción: mejora de la eficiencia reproductiva en especies de interés zootécnico info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Animal Feed Science and Technology 320 : 116223. (February 2025) |
| spellingShingle | Cordero Oveja Suplementos Alimentarios Pastoreo Zona Semiárida Estepas Sal Período Perinatal Lambs Ewes Food Supplements Grazing Semiarid Zones Steppes Salts Perinatal Period Raza Merino Cueto, Marcela Isabel Fernandez, Jimena Bruno Galarraga, María Macarena Gibbons, Alejandro Eduardo Riquelme, Maximiliano Castillo, Daniel Alejandro Tesan, Micaela Schaap, Bárbara Villar, Maria Laura Villagra, Edgar Sebastian Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes |
| title | Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes |
| title_full | Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes |
| title_fullStr | Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes |
| title_full_unstemmed | Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes |
| title_short | Salt-regulated prepartum supplementation and parity effects on maternal performance, wool growth, and lamb development in Merino ewes grazing in semi-arid steppes |
| title_sort | salt regulated prepartum supplementation and parity effects on maternal performance wool growth and lamb development in merino ewes grazing in semi arid steppes |
| topic | Cordero Oveja Suplementos Alimentarios Pastoreo Zona Semiárida Estepas Sal Período Perinatal Lambs Ewes Food Supplements Grazing Semiarid Zones Steppes Salts Perinatal Period Raza Merino |
| url | http://hdl.handle.net/20.500.12123/21553 https://www.sciencedirect.com/science/article/abs/pii/S0377840125000185 https://doi.org/10.1016/j.anifeedsci.2025.116223 |
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