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Han C, Li M, Li F, Wang Z, Hu X, Yang Y, Wang H, Lv S. Temporary sensory separation of lamb groups from ewes affects behaviors and serum levels of stress-related indicators of small-tailed Han lambs. Physiol Behav 2024; 277:114504. [PMID: 38408718 DOI: 10.1016/j.physbeh.2024.114504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/21/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
Under the current meat sheep breeding system, newborn lambs usually live with their mothers until weaning, and in daily management, they often need to be separated from their ewes for a short period due to dehorning, disease treatment, etc. Such short-term separation was considered to be a high-intensity stress for the lambs. This study aimed to explore the effects of 1 h sensory separations on behaviors and the concentration of stress-related indicators of small-tailed Han lambs. Lambs were assigned to four groups: auditory, visual, and tactile separation (AVT) group; visual and tactile separation (VT) group; tactile separation (T) group; and control (C) group. Then they were separated from their mothers for one hour on postnatal days 14, 21, 28, 35 and 42. Results showed the separated lambs (AVT, VT, and T groups) spent less time lying down relaxing and more time looking around, exploring, vocalizing, and attempting to escape (P < 0.05). Lambs separated by lack of tactile contact only exhibited the most escaping and moving behavior. Twin-born lambs showed less moving, escaping, and vocalizing than single-born lambs (P < 0.05). The separation also led to a rise in serum globulin levels and a decrease in tetraiodothyronine. In conclusion, this study showed that temporary 1 h ewe-lamb separations could affect behaviors and the serum levels of stress indicators of lambs. The behavioral responses were more obvious when lambs were separated by lack of tactile contact only, and in single-born lambs. It can conclude that indicated that when lambs need to be temporarily separated from ewes in daily management production, it would be better to let them stay together with their littermates, and make them avoid hearing or seeing the ewes, such management may partially reduce the separation stress, thereby improving the welfare and breeding efficiency of sheep.
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Affiliation(s)
- Chengquan Han
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China
| | - Min Li
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China
| | - Fukuan Li
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China
| | - Zhennan Wang
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China
| | - Xiyi Hu
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China
| | - Yan Yang
- Linyi Academy of Agricultural Sciences, Linyi, Shandong 276012, China
| | - Hui Wang
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China,.
| | - Shenjin Lv
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong 276000, China,.
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M. Abdelsattar M, Vargas-Bello-Pérez E, Zhang N. Age-related changes in blood biochemical composition of Hu sheep. ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2022.2108730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Mahmoud M. Abdelsattar
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research of Chinese Academy of Agricultural Sciences, Beijing, China
- Department of Animal and Poultry Production, Faculty of Agriculture, South Valley University, Qena, Egypt
| | - Einar Vargas-Bello-Pérez
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, Reading, UK
| | - Naifeng Zhang
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research of Chinese Academy of Agricultural Sciences, Beijing, China
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Villar ML, Giraudo CG, Cueto MI. Short-term energy supplementation before lambing improves maternal behaviour, udder volume, colostrum viscosity and lamb birthweight in ewes under extensive grazing. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Farias GD, Bremm C, Savian JV, de Souza Filho W, de Lima LC, de Albuquerque Nunes PA, Alves LA, Sacido M, Montossi F, Tiecher T, de Faccio Carvalho PC. Opportunities and challenges for the integration of sheep and crops in the Rio de la Plata region of South America. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Casuriaga D, Ungerfeld R, Ciappesoni G, Freitas-de-Melo A. Lambs are more stressed at early weaning when housed with their twin. Trop Anim Health Prod 2022; 54:123. [PMID: 35235062 DOI: 10.1007/s11250-022-03121-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 02/18/2022] [Indexed: 10/19/2022]
Abstract
The objective of this study was to compare the behavioural and immunological responses of twin lambs housed together with their siblings or not after weaning. The study was performed with seven multiparous Milchschaf ewes and their twin lambs (n = 14), which were weaned abruptly at 63 days of age and assigned to two experimental groups: (1) lambs that were housed together with their sibling after weaning (group GT, n = 6) and (2) lambs that were separated from their siblings and remained with other lambs from the same flock (group GS, n = 8). Before and after weaning, the distance between twins, the number of times in which the sibling was the closest lamb, the lambs' behaviours, and the average daily gain were recorded. The lambs' immune response was assessed with the phytohemagglutinin skin test after weaning. The closest lamb before weaning was the sibling in all cases (P < 0.0001 for all). The frequency in which GT lambs were observed closest from its twin increased on the day of weaning (P = 0.002). During the day of weaning, GT lambs vocalised and paced more than GS lambs (P = 0.001 and P = 0.01, respectively). Twenty-four h after the phytohemagglutinin injection, the skinfold thickness was greater in GS than GT lambs (P = 0.03). In conclusion, twin lambs housed together with their siblings were more stressed at weaning, displaying more intensive behavioural changes and a poorer immunological status than twin lambs housed separated from their siblings.
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Affiliation(s)
- Daniela Casuriaga
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de La República, Ruta 8, km 18, 13000, Montevideo, Uruguay.
| | - Rodolfo Ungerfeld
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de La República, Ruta 8, km 18, 13000, Montevideo, Uruguay
| | - Gabriel Ciappesoni
- Instituto Nacional Investigación Agropecuaria, INIA Las Brujas, Canelones, Uruguay
| | - Aline Freitas-de-Melo
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de La República, Ruta 8, km 18, 13000, Montevideo, Uruguay
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Freitas-de-Melo A, Orihuela A, Hötzel MJ, Ungerfeld R. What Do We Know and Need to Know About Weaning in Sheep? An Overview of Weaning Practises, Stress and Welfare. FRONTIERS IN ANIMAL SCIENCE 2022. [DOI: 10.3389/fanim.2022.823188] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Artificial weaning is the separation of the mother and her lamb, involving the forced ending of suckling and milk supply by the ewes to their lambs. Artificial weaning time varies depending on the purpose of each sheep farm and the characteristics of the lambs, including age and weight of the lambs, and their ability to eat solid food. Artificial weaning is performed from 24 h postpartum until around the age of natural weaning (up to 12 mo of age). Artificial weaning results in the breaking of the ewe-lamb bond, the end of suckling and the complete replacement of milk by solid food, frequently added to changes in both the physical and social environment. It triggers behavioural, physiological and immunological changes that generate negative consequences on the health of both ewes and lambs, as well as on the growth of the lambs, rising animal welfare concerns. As artificial weaning is considered one of the most stressful situations in the life of farm mammals, it is important to consider the factors involved in those responses to develop adequate strategies and improve sheep welfare at weaning. The most frequently used method is the abrupt separation of the ewes and their lambs. However, the adaptation of the animals after weaning can be improved by alternative weaning methods (e.g., progressive, two-steps weaning and mixed regimes), hormonal treatments (e.g., administration of progesterone), and pre- and postweaning management (e.g., the use of creeping feeding, and the presence of conspecifics or humans after weaning). This review presents and summarises information on the stress response and animal welfare issues at artificial weaning in sheep and some management practises that can be used to reduce these problems. The major points included are the ewe-lamb bond at birth and during the lactation period; the stress response at weaning; the factors involved in the stress response at weaning; the different types and weaning methods and their repercussions on animal welfare; and some strategies that can be used to improve sheep welfare at weaning. Lastly, we propose directions for research needed to develop practical alternatives to minimise sheep's stress response at weaning.
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Menant O, Ungerfeld R, Lévy F, Pérez-Clariget R, Freitas-de-Melo A. Out-of-season breeding and ewe-lamb bond from birth to weaning in Corriedale sheep. Appl Anim Behav Sci 2022. [DOI: 10.1016/j.applanim.2021.105542] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Orihuela A, Mota-Rojas D, Strappini A, Serrapica F, Braghieri A, Mora-Medina P, Napolitano F. Neurophysiological Mechanisms of Mother-Young Bonding in Buffalo and Other Farm Animals. Animals (Basel) 2021; 11:ani11071968. [PMID: 34209286 PMCID: PMC8300112 DOI: 10.3390/ani11071968] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The present paper reviews the importance of bonding for the survival and well-being in the cow–calf relationship. The review focuses on buffaloes and information from other species is used for comparison or to find more general patterns in the absence of specific sources. Differences between several farm species are also described, focusing on the role played by the sensory stimuli during the sensitive period after birth. How bonding can be classified according to the predominant senses used by different species, the importance of learning (i.e., imprinting) in the development of mother–young relationship, and the neurobiological mechanisms involved are also delineated. Finally, some examples of the main factors that can affect the mother–young relationship in the field are given. By understanding the imprinting at brain level, as well as the relationship with behavior, we gain a deeper insight into the critical role that experience, and environmental factors play in shaping the development of the mother–offspring bond. Abstract In buffaloes and other mammalian farm species, the mother provides food and protection to the young, but she is also the main source of behavioral and social learning for the offspring. It is important that mother and young establish a bond based on a learning mechanism defined as “imprinting” early after parturition during the sensitive period, on which the welfare and survival of the offspring will depend. This review aims to summarize and discuss current knowledge regarding the imprinting process, the neurobiological pathways that are triggered during this sensitive period, and the development of the cow–calf bond. Touch, hearing, vision, and smell seem to be the predominant senses involved during imprinting in buffaloes and other mammalian farm species. In buffalo, bonding is very particular due to the expression of specific behaviors, such as allo-suckling and communal rearing. In general, imprinting and the subsequent bond may be affected by the lack of experience of the mothers or dystocic parturitions, which occur most frequently with male calves and in primiparous dams. The main problems in the development of this process include lack of seeking a protected and isolated place to give birth; moving from the birth-site after parturition; insufficient postpartum care; aversion or aggressiveness towards the newborn, or abandonment of the newborn. The process can develop differently according to the species. However, the correct development of the cow–calf relationship represents, regardless of the species, a key factor for their fitness.
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Affiliation(s)
- Agustín Orihuela
- Facultad de Ciencias Agropecuarias, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
- Correspondence:
| | - Daniel Mota-Rojas
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana, (UAM), Mexico City 04960, Mexico;
| | - Ana Strappini
- Faculty of Veterinary Sciences, Animal Science Institute, Universidad Austral de Chile, Valdivia 5090000, Chile;
| | - Francesco Serrapica
- Dipartimento di Agraria, Universitàdi Napoli Federico II, Via Università100, 80055 Portici, Italy;
| | - Ada Braghieri
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy; (A.B.); (F.N.)
| | - Patricia Mora-Medina
- Livestock Science Department, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), Mexico City 54714, Mexico;
| | - Fabio Napolitano
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy; (A.B.); (F.N.)
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Ungerfeld R, Pérez-Clariget R, Menant O, Freitas-de-Melo A. Conception during the lactation and rearing period affects the ewe-lamb bond at birth. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Ewe-lamb bond of experienced and inexperienced mothers undernourished during gestation. Sci Rep 2021; 11:4634. [PMID: 33633353 PMCID: PMC7907103 DOI: 10.1038/s41598-021-84334-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/15/2021] [Indexed: 11/08/2022] Open
Abstract
The aims were to compare ewe-lamb behaviours between primiparous (PRI) and multiparous (MUL) undernourished grazing ewes at birth and at 3 months of age, and to determine if mothers’ parity affects milk yield and composition, and lambs’ body weight (BW). Food availability restricted the nutritional requirements from day 30 to day 143 of gestation. The MUL ewes had greater BW than the PRI during gestation, and their lambs tended to vocalize less frequently until their first suckle. PRI ewes both displayed a lower frequency of acceptance behaviours and, a greater number of high-pitched bleats toward the alien lamb than toward that of their own, but MUL did not. PRI ewes produced less milk than the MUL ewes. The heart rate was greater in lambs reared by MUL ewes than by PRI. Although PRI ewes had a lower BW during gestation, this difference was stable throughout and did not affect the establishment of the ewe-lamb bond neither at birth nor at 3 months postpartum. At least under nutritionally restricted conditions during gestation, inexperienced mothers appeared to have had a shorter sensitivity period of maternal responsiveness than that of experienced mothers.
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Behavioral and physiological responses to early weaning in ewes and their single or twin lambs. Trop Anim Health Prod 2021; 53:150. [PMID: 33537840 DOI: 10.1007/s11250-021-02589-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 01/20/2021] [Indexed: 11/27/2022]
Abstract
As during the early postpartum, ewes and their twin lambs have a weaker bond than ewes that rear single lambs; it might be expected that early artificial weaning would trigger less intense behavioral and physiological responses in mothers and their twin lambs than in mothers and their single lambs. The aim of this study was to compare the behavioral and physiological responses of ewes and their twin or single lambs to early weaning. The study was performed with 19 Saint Croix ewes: 10 bearing single lambs and nine bearing twins (data from only one sibling from each pair of twins was collected). Lambs were weaned at 43 days old. Body weight, stress-related behaviors, and blood protein concentrations were recorded in ewes and lambs before and after weaning. Single lambs were heavier and paced more frequently during the day of weaning than twin lambs (10.6 ± 0.4 vs 8.9 ± 0.4 kg; P = 0.007 and 4.1 ± 0.4 vs 1.5 ± 0.4%; P = 0.0003, respectively). In addition, ewes rearing single lambs paced and vocalized more than twin lambs' mothers the day of weaning (pacing, 42.4 ± 1.1 vs 20.0 ± 1.2%; P < 0.0001; vocalizations, 43.1 ± 2.6 vs 21.3 ± 2.7%; P < 0.0001). Litter size affected only ewes' albumin concentration, without other effects in protein concentrations in ewes or lambs. In conclusion, early weaning triggered stronger behavioral responses in mothers and their single lamb than in mothers and their twin lambs.
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Menant O, Ungerfeld R, Pérez-Clariget R, Freitas-de-Melo A. Is body surface temperature measured on the single lambs' back a reliable indicator of the ewe-lamb bond around birth? J Therm Biol 2020; 93:102699. [PMID: 33077120 DOI: 10.1016/j.jtherbio.2020.102699] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/03/2020] [Accepted: 08/13/2020] [Indexed: 02/06/2023]
Abstract
In extensive sheep production systems, most of the lambs' deaths are related to their low vitality at birth, and an inadequate ewe-lamb bond, leading to lambs' hypothermia. In this context, the aim of this study was to determine if lambs' rectal and body surface temperatures were related to the ewes and lambs behaviours at birth and during a separation-reunion test performed 24-36 h later. Rectal and body surface temperatures of lambs were recorded using a digital thermometer and an infrared thermal camera, respectively, and were related to several ewe and lamb behaviours. Rectal temperature was inversely related to the duration of the first suckling at birth. As for lambs' weight, body surface temperatures recorded at birth were inversely related to its latency to suckle for the first time. Body surface temperatures recorded during a separation-reunion test were positively related to the ewe-lamb distance during it. Body surface temperature recorded at birth was negatively related to behaviours recorded during the separation-reunion test, such as the number of lamb vocalizations, the ewe-lamb distance and the latency to suckle after the ewe-lamb separation. Body surface temperatures were greater after the separation-reunion test than at birth. We concluded that lambs' body surface temperatures seem to be indicators of the lambs' vitality at birth and of the strength of the ewe-lamb bond measured one day after birth.
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Affiliation(s)
- Ophélie Menant
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de La República, Montevideo, Uruguay.
| | - Rodolfo Ungerfeld
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de La República, Montevideo, Uruguay
| | - Raquel Pérez-Clariget
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de La República, Montevideo, Uruguay
| | - Aline Freitas-de-Melo
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de La República, Montevideo, Uruguay
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Freitas-de-Melo A, Ungerfeld R. The sex of the offspring affects the lamb and ewe responses to abrupt weaning. Appl Anim Behav Sci 2020. [DOI: 10.1016/j.applanim.2020.105008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Tekin K, Cil B, Alemdar H, Olgac KT, Tirpan MB, Daskin A, Stelletta C. Semen collection by trans-rectal digital stimulation and insemination campaign in goat. Andrologia 2019; 52:e13458. [PMID: 31670478 DOI: 10.1111/and.13458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/28/2019] [Accepted: 06/11/2019] [Indexed: 11/27/2022] Open
Abstract
The overall purpose of this study was to describe a method of semen collection via trans-rectal digital massage (TDM) and to carry out a related fertility trial in Angora goat. Sixteen Angora bucks (ranging 1-4 years) and 28 nulliparous does (1-2 years) were used in this study. Semen samples were collected via trans-rectal massage from 85.71% of the bucks in multiple attempts (18/21). The mean values of volume, pH, mass motility, total motility, concentration, viability, abnormal spermatozoa rate and ejaculation time were 0.64 ± 0.09 ml, 6.3 ± 0.21, 2.7 ± 0.34, 58.18 ± 5.1%, 3.68 ± 0.31 × 109 /ml, 71.38 ± 7.12%, 18.22 ± 2.48% and 3.4 ± 0.33 min respectively. Oestrus was detected with teaser buck and confirmed by using infrared thermography and ultrasonography (US). The success rate of synchronisation was found as 71.4% (20/28). On Day 21, pregnancy diagnosis was performed trans-rectally with US and the pregnancy rate was determined as 78.57% (11/14). TDM method of semen collection seems to be easily applicable to the buck and it could be a good alternative to collect semen as well as its use in artificial insemination campaign. Thermal monitoring is found to be a valuable tool to monitor the response to hormonal driven ovulatory synchronisation in Angora does during timed artificial insemination.
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Affiliation(s)
- Koray Tekin
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey
| | - Beste Cil
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey
| | - Havva Alemdar
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey
| | - Kemal Tuna Olgac
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey
| | - Mehmet Borga Tirpan
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey
| | - Ali Daskin
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey
| | - Calogero Stelletta
- Department of Reproduction and Artificial Insemination, University of Ankara, Ankara, Turkey.,Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
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Maternal nutritional restriction during gestation impacts differently on offspring muscular and elastic arteries and is associated with increased carotid resistance and ventricular afterload in maturity. J Dev Orig Health Dis 2019; 11:7-17. [PMID: 31138338 DOI: 10.1017/s2040174419000230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Intrauterine undernutrition could impact offspring left ventricle (LV) afterload and arterial function. The changes observed in adulthood could differ depending on the arterial type, pathway and properties studied. Aim: To analyze whether undernutrition during early and mid-gestation is associated with changes in cardiovascular properties in adulthood. METHODS Pregnant ewes were assigned to one of the two treatment groups: (1) standard nutritional offer (high pasture-allowance, HPA; n = 16) or (2) nutritional restriction (50-75% of control intake) from before conception until day 122 of gestation (≈85% term) (low pasture allowance, LPA; n = 17). When offspring reached adult life, cardiovascular parameters were assessed in conscious animals (applanation tonometry, vascular echography). MEASUREMENTS Peripheral and aortic pressure, carotid and femoral arteries diameters, intima-media thickness and stiffness, blood flow, local and regional resistances and LV afterload were measured. Blood samples were collected. Parameters were compared before and after adjustment for nutritional characteristics at birth and at the time of the cardiovascular evaluation. RESULTS Doppler-derived cerebral vascular resistances, mean pressure/flow ratio (carotid resistance) and afterload indexes were higher in descendants from LPA than in descendants from HPA ewes (p < 0.05). Descendants from LPA had lower femoral diameters (p < 0.05). Cardiovascular changes associated with nutritional restriction during pregnancy did not depend on the offsprings' nutritional conditions at birth and/or in adult life. CONCLUSION Pregnant ewes that experienced undernutrition gave birth to female offspring that exhibited increased carotid pathway resistances (cerebral microcirculatory resistances) and LV afterload when they reached the age of 2.5 years. There were differences in the impact of nutritional deficiency on elastic and muscular arteries.
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Freitas-de-Melo A, Ungerfeld R, Pérez-Clariget R. Behavioral pattern in Texel x Corriedale terminal crossbreeding: Maternal behavior score at birth, lambs’ feeding behaviors, and behavioral responses of lambs to abrupt weaning. J Vet Behav 2019. [DOI: 10.1016/j.jveb.2018.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ungerfeld R, Freitas-de-Melo A, Damián JP, Fernández-Werner A, Kremer R. Behavioural and physiological changes in pregnant ewes after winter shearing. Small Rumin Res 2018. [DOI: 10.1016/j.smallrumres.2018.10.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Ungerfeld R, Freitas-de-Melo A, Nowak R, Lévy F. Preference for the mother does not last long after weaning at 3 months of age in sheep. Appl Anim Behav Sci 2018. [DOI: 10.1016/j.applanim.2018.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Freitas-de-Melo A, Terrazas A, Ungerfeld R, Hötzel MJ, Orihuela A, Pérez-Clariget R. Influence of low pasture allowance during pregnancy on the attachment between ewes and their lambs at birth and during lactation. Appl Anim Behav Sci 2018. [DOI: 10.1016/j.applanim.2017.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Abril-Sánchez S, Freitas-de-Melo A, Beracochea F, Damián JP, Giriboni J, Santiago-Moreno J, Ungerfeld R. Sperm collection by transrectal ultrasound-guided massage of the accessory sex glands is less stressful than electroejaculation without altering sperm characteristics in conscious goat bucks. Theriogenology 2017; 98:82-87. [DOI: 10.1016/j.theriogenology.2017.05.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 04/20/2017] [Accepted: 05/03/2017] [Indexed: 11/26/2022]
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