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Zarazaga LA, Gatica MC, De La Rosa I, Guzmán JL. The use of photoperiod-treated bucks to induce a "male effect" does not compensate for the negative effects of nutritional restriction of the females in Mediterranean goats. Res Vet Sci 2021; 139:177-185. [PMID: 34333252 DOI: 10.1016/j.rvsc.2021.07.027] [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: 03/24/2021] [Revised: 07/09/2021] [Accepted: 07/22/2021] [Indexed: 10/20/2022]
Abstract
This work examined the effect of acute nutritional restriction or supplementation one week before male introduction on the reproductive performances of the "male effect" when using photostimulated or control males in goats. On 22 March, 84 anoestrous does were placed with photostimulated bucks or with bucks which had received no treatments. One week before male introduction, the females were provided with different nutritional regimes: Supplemented, restricted or control females. The non-esterified fatty acids (NEFAs) and Insulin Growth Factor-1 (IGF-1) concentrations were measured in the same samples. Fecundity, fertility, prolificacy and productivity were also determined. No interaction between both sources of variation was observed in any of the reproductive variables studied. Treatment of the bucks increased the percentage of females expressing behavioural oestrous associated with ovulation (71% vs 90% for Natural and Photo groups, respectively, P < 0.05). The Supplemented females showed higher ovulation rate than Restricted females (1.77 ± 0.13 vs 1.05 ± 0.05, P < 0.001), fecundity (71% vs 43%, P < 0.05); fertility (76% vs 29%, P < 0.05) and productivity (1.00 ± 0.15 vs 0.29 ± 0.11 kids per female, P < 0.01). In the Supplemented females, the higher reproductive results could be due to the lower NEFAs and higher IGF-1 concentrations at ovulation and at the time of oestrus compared to the Restricted females. Thus, the present experiment results demonstrate that nutrition is an important factor in the response to the "male effect" at Mediterranean latitudes, and its negative effect cannot be counterbalanced by using photostimulated bucks.
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Affiliation(s)
- L A Zarazaga
- Departamento de Ciencias Agroforestales, Universidad de Huelva, "Campus de Excelencia Internacional Agroalimentario, ceiA3", Carretera Huelva-Palos de la Frontera s/n, 21819 Palos de la Frontera, Huelva, Spain.
| | - M C Gatica
- Universidad Arturo Prat, Facultad de Recursos Naturales Renovables, Avenida Arturo Prat, 2120 Iquique, Chile
| | - I De La Rosa
- Departamento de Ciencias Agroforestales, Universidad de Huelva, "Campus de Excelencia Internacional Agroalimentario, ceiA3", Carretera Huelva-Palos de la Frontera s/n, 21819 Palos de la Frontera, Huelva, Spain
| | - J L Guzmán
- Departamento de Ciencias Agroforestales, Universidad de Huelva, "Campus de Excelencia Internacional Agroalimentario, ceiA3", Carretera Huelva-Palos de la Frontera s/n, 21819 Palos de la Frontera, Huelva, Spain
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2
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Novaes MAS, de Souza Netto DL, Almeida PP, Carvalho VHR, Lovatti JVR, Costa SLD, Neves MM, Veloso CM, Torres CAA. Can maintenance intake reduce production costs without compromising the reproductive performance in bucks? Anim Reprod Sci 2020; 215:106331. [PMID: 32216927 DOI: 10.1016/j.anireprosci.2020.106331] [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: 05/28/2019] [Revised: 01/20/2020] [Accepted: 02/21/2020] [Indexed: 10/24/2022]
Abstract
Excessive intake of nutrients can result in decreases in the reproductive efficiency of goat bucks and increase production costs in goat e nterprises. In this study, the aim was to compare the reproductive features of young bucks fed diets for maintenance of growth or were fed ad libitum. Ten bucks were used (n = 5/group), with a completely randomized design. Blood and semen were collected from each animal every 2 weeks for nine collections. Semen was frozen and later analyzed using flow cytometry to compare reactive oxygen species, plasma membrane integrity, acrosome integrity, and membrane lipid peroxidation. Body condition score, sexual behavior, testicular biometry and histomorphometry of the testis, as well as oxidative enzymes and carbonylated proteins, were also evaluated. Animals fed ad libitum had a greater body condition score (3.32 + 0.08 × 2.88 + 0.05), sperm volume (0.68 + 0.04 × 0.52 + 0.03 mL), and testis circumference (25.2 + 0.21 × 24.5 + 0.24 cm) and volume (121 + 5.83 × 107 + 4.38 cm³, left testicle; 116 + 5.26 × 100 + 3.75 cm³, right testicle). Ejaculates of the bucks fed diets to maintain growth rate had a larger number of minor and total sperm morphology defects. There were no differences in testosterone concentrations and sexual behavior. In conclusion, there can be feeding for growth rate maintenance instead of ad libitum feeding, for the reduction in production costs of young bucks without compromising semen quality and reproductive functions.
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Affiliation(s)
- Marco Aurélio Schiavo Novaes
- Department of Animal Science, Universidade Federal de Viçosa, Animal Reproduction Laboratory, 36570-900, Viçosa, MG, Brazil.
| | | | - Palloma Porto Almeida
- Department of General Biology, Universidade Federal de Viçosa, Immunochemistry and Glycobiology Laboratory, 36570-900, Viçosa, MG, Brazil
| | - Victor Hugo Ribeiro Carvalho
- Department of Animal Science, Universidade Federal de Viçosa, Animal Reproduction Laboratory, 36570-900, Viçosa, MG, Brazil
| | - João Vitor Ribeiro Lovatti
- Department of Animal Science, Universidade Federal de Viçosa, Animal Reproduction Laboratory, 36570-900, Viçosa, MG, Brazil
| | - Sanely Lourenço da Costa
- Latin American Institute of Life and Nature Sciences, Universidade Federal da Integração Latino-americana, 85866-000, Foz do Iguaçu, PR, Brazil
| | - Mariana Machado Neves
- Department of General Biology, Universidade Federal de Viçosa, Structural Biology Laboratory, 36570-900, Viçosa, MG, Brazil
| | - Cristina Mattos Veloso
- Department of Animal Science, Universidade Federal de Viçosa, Animal Reproduction Laboratory, 36570-900, Viçosa, MG, Brazil
| | - Ciro Alexandre Alves Torres
- Department of Animal Science, Universidade Federal de Viçosa, Animal Reproduction Laboratory, 36570-900, Viçosa, MG, Brazil
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Chasles M, Chesneau D, Moussu C, Abecia JA, Delgadillo JA, Chemineau P, Keller M. Highly precocious activation of reproductive function in autumn-born goats (Capra hircus) by exposure to sexually active bucks. Domest Anim Endocrinol 2019; 68:100-105. [PMID: 31026741 DOI: 10.1016/j.domaniend.2019.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 11/17/2022]
Abstract
Goats are seasonal breeders with the main cue controlling the timing of breeding season being photoperiod. Hence, the season of birth impacts puberty onset: spring-born goats reach puberty in autumn, at 7 mo of age, whereas autumn-born goats reach puberty at 1 yr during the next reproductive season. The aim of this study was to determine whether exposure of autumn-born young females to sexually active males could counteract the delay in puberty onset observed in autumn-born goats. Females exposed to sexually active males (n = 8) reached puberty earlier than isolated females (n = 8), with exposed females ovulating at a mean age of 3.5 mo. To our knowledge, such precocious puberty onset obtained through social stimulation has never been described in the literature. Moreover, those exposed females exhibited estrus behavior for most ovulations. Our results indicate that in goats born out of season, exposure to sexually active bucks is a really efficient approach to induce early puberty, suggesting that social interactions could have a crucial impact on the regulation of pubertal transition.
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Affiliation(s)
- M Chasles
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - D Chesneau
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - C Moussu
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - J A Abecia
- Departamento de Producción Animal y Cienca de los Alimentos, Instituto Universitario de Investigación en Ciencias Ambientales (IUCA), Universidad de Zaragoza, Miguel Servet, 177, Zaragoza 50013, Spain
| | - J A Delgadillo
- Centro de Investigación en Reproducción Caprina, Universidad Autónoma Agraria Antonio Narro, Torreón, Coahuila, Mexico
| | - P Chemineau
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - M Keller
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France.
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Chasles M, Chesneau D, Moussu C, Poissenot K, Beltramo M, Delgadillo JA, Chemineau P, Keller M. Sexually active bucks are a critical social cue that activates the gonadotrope axis and early puberty onset in does. Horm Behav 2018; 106:81-92. [PMID: 30308180 DOI: 10.1016/j.yhbeh.2018.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/04/2018] [Accepted: 10/06/2018] [Indexed: 10/28/2022]
Abstract
In rodents, early exposure to adult male is well known to induce an early puberty in females (Vandenbergh effect). This phenomenon has been less studied in other mammals. In goats, despite our extensive knowledge about the "male-effect" phenomenon in adults (i.e. ovulation induced by the introduction of the male during the anestrous), there are few data on the consequences of an early exposure of females to males. Here, we evaluated the puberty onset of young alpine goats when raised since weaning with intact bucks (INT), with castrated bucks (CAS) or isolated from bucks (ISOL). The INT group had the first ovulation 1.5 month before the two other groups. Despite the earlier puberty the INT group of females had normal and regular ovarian cycles. Morphological study of the genital tract showed that at 6 months, uterus of INT goats was 40% heavier than CAS and ISOL goats. Moreover, INT females had a myometrium significantly thicker and INT was the only group having corpora lutea. In our study, INT females were pubescent in the month following the entry of bucks into the breeding season, suggesting that only sexually active bucks provide the signal responsible for puberty acceleration. By removing direct contact with the bucks, we showed that somatosensory interactions were dispensable for an early puberty induction. Finally, no difference in the GnRH network (fiber density and number of synaptic appositions) can be detected between pubescent and non-pubescent females, suggesting that the male stimulations triggering puberty onset act probably on upstream neuronal networks, potentially on kisspeptin neurons.
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Affiliation(s)
- Manon Chasles
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Didier Chesneau
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Chantal Moussu
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Kevin Poissenot
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Massimiliano Beltramo
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - José Alberto Delgadillo
- Centro de Investigacíon en Reproducción Caprina, Universidad Autónoma Agraria Antonio Narro, Torreón, Coahuila, Mexico
| | - Philippe Chemineau
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Matthieu Keller
- UMR Physiologie de la Reproduction et des Comportements, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France.
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Resumption of ovarian activity is modified by non-photoperiodic environmental cues in Criollo goats in tropical latitudes. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.02.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Bomfim GF, Merighe GKF, de Oliveira SA, Rodrigues AD, Augusto L, Teixeira IAMA, de Resende KT, Negrao JA. Effects of different supplemental soya bean oil levels on the performance of prepubertal Saanen goats: Oestrogen and progesterone release. J Anim Physiol Anim Nutr (Berl) 2016; 100:1097-1103. [PMID: 26898245 DOI: 10.1111/jpn.12486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 01/11/2016] [Indexed: 11/29/2022]
Abstract
The aim of this study was to investigate the effects of different levels of soya bean oil in the total diet on the growth rate, metabolic changes, and oestrogen and progesterone release in Saanen goats. After dietary adaptation, 21 prepubertal goats (weight of 29.12 ± 0.91 kg, 230 days old) were randomly distributed among three diets of D2: inclusion of 2% soya bean oil in the total diet; D3: basal diet - inclusion of 3% soya bean oil in the total diet; and D4: inclusion of 4% soya bean oil in the total diet. The basal diet (D3) was formulated to promote a daily gain of 0.140 kg. The goats were weighed, and their blood samples were collected weekly. Glucose, cholesterol, triglycerides, total protein, urea, non-esterified fatty acids, beta-hydroxybutyrate, oestrogen and progesterone in the plasma were measured. Prepubertal goats that were fed D4 exhibited a significantly lower dry matter intake, urea and cholesterol levels compared with the goats that were fed D2 and D3. Indeed, goats that were fed D4 displayed a significantly lower final weight than goats that were fed D2 and D3. In contrast, the inclusion of soya bean oil in the diet increased the progesterone and oestrogen concentrations, and goats that were fed D4 released a significantly higher concentration of progesterone than those that were fed D2 and D3. Furthermore, the percentage of goats with a progesterone level greater than 1 ng/ml (functional Corpus luteum) was significantly higher among the goats that were fed D3 and D4 than among those that were fed D2. In this study, although the inclusion of 4% soya bean oil in the diet decreased dry matter intake and growth rate, it increased progesterone concentration and the percentage of goats with a functional Corpus luteum, suggesting that the inclusion of soya bean oil accelerated puberty in prepubertal goats.
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Affiliation(s)
- G F Bomfim
- Department of Basic Sciences, University of São Paulo, Pirassununga, Brazil
| | - G K F Merighe
- Department of Basic Sciences, University of São Paulo, Pirassununga, Brazil
| | - S A de Oliveira
- Department of Basic Sciences, University of São Paulo, Pirassununga, Brazil
| | - A D Rodrigues
- Department of Basic Sciences, University of São Paulo, Pirassununga, Brazil
| | - L Augusto
- Department of Basic Sciences, University of São Paulo, Pirassununga, Brazil
| | - I A M A Teixeira
- Department of Animal Science, State University of São Paulo, Jaboticabal, Brazil
| | - K T de Resende
- Department of Animal Science, State University of São Paulo, Jaboticabal, Brazil
| | - J A Negrao
- Department of Basic Sciences, University of São Paulo, Pirassununga, Brazil
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