Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats
13 páginas, 1 figura, 6 tablas.
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American Dairy Science Association
2021
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| Subjects: | Caprine, Fatty acid, Fish oil, Ovine, Performance, |
| Online Access: | http://hdl.handle.net/10261/252883 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
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Caprine Fatty acid Fish oil Ovine Performance Caprine Fatty acid Fish oil Ovine Performance |
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Caprine Fatty acid Fish oil Ovine Performance Caprine Fatty acid Fish oil Ovine Performance Della Badia, Antonella Hervás, Gonzalo Toral, Pablo G. Frutos, Pilar Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
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13 páginas, 1 figura, 6 tablas. |
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Agencia Estatal de Investigación (España) |
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Agencia Estatal de Investigación (España) Della Badia, Antonella Hervás, Gonzalo Toral, Pablo G. Frutos, Pilar |
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artículo |
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Caprine Fatty acid Fish oil Ovine Performance |
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Della Badia, Antonella Hervás, Gonzalo Toral, Pablo G. Frutos, Pilar |
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Della Badia, Antonella |
| title |
Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
| title_short |
Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
| title_full |
Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
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Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
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Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
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individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats |
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American Dairy Science Association |
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2021 |
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http://hdl.handle.net/10261/252883 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
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AT dellabadiaantonella individualdifferencesinresponsivenesstodietinducedmilkfatdepressionindairysheepandgoats AT hervasgonzalo individualdifferencesinresponsivenesstodietinducedmilkfatdepressionindairysheepandgoats AT toralpablog individualdifferencesinresponsivenesstodietinducedmilkfatdepressionindairysheepandgoats AT frutospilar individualdifferencesinresponsivenesstodietinducedmilkfatdepressionindairysheepandgoats |
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dig-igm-es-10261-2528832022-09-01T04:30:42Z Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats Della Badia, Antonella Hervás, Gonzalo Toral, Pablo G. Frutos, Pilar Agencia Estatal de Investigación (España) European Commission Ministerio de Ciencia e Innovación (España) Ministerio de Economía y Competitividad (España) Della Badia, Antonella [0000-0002-2685-5328] Hervás, Gonzalo [0000-0002-0013-7459] Toral, Pablo G. [0000-0002-1913-7707] Frutos, Pilar [0000-0002-4919-5094] Caprine Fatty acid Fish oil Ovine Performance 13 páginas, 1 figura, 6 tablas. Both sheep and goats can display very different individual degrees of milk fat depression (MFD), which might explain some apparent contradictions in the literature. Because the antilipogenic effect of certain fatty acids (FA) is the most likely origin of MFD, characterizing the milk FA profile of animals showing different degrees of MFD seems a helpful step to understand the physiological basis of the tolerance or susceptibility to the syndrome. Analyzing whether specific traits may predetermine a particular responsiveness would also be of relevance to meet this aim. However, information about these aspects is scant, not only in goats and sheep but in ruminants in general. This study was conducted with 25 Murciano-Granadina does and 23 Assaf ewes that were fed a total mixed ration without lipid supplementation for 3 wk (control period). Then, all animals received the same basal diet supplemented with 2% of fish oil (FO) for 5 additional weeks (MFD period). At the end of this second period, and on the basis of the extent of FO-induced decreases in milk fat concentration, the 5 most responsive (RESPON+) and the 5 least responsive (RESPON−) animals were selected within each species, 20 in total. Milk yield and composition, including a comprehensive FA profile, were examined at the end of each period. By design, between-group variation in milk fat concentration and yield was substantial, but no significant interaction with the effect of species was detected. Reductions in these 2 performance traits averaged 6% in RESPON− and 26% in RESPON+. Results do not allow suggesting that responsiveness to MFD would be clearly predetermined neither by the studied performance traits nor by milk FA profile, although a certain relationship with energy balance might exist. Furthermore, variations in ewes and does displaying different individual degrees of MFD may be associated with changes in certain candidate milk fat inhibitors, such as trans-10 18:1 and cis-9 16:1, whereas trans-10,cis-12 conjugated linoleic acid would only have a minor role in determining MFD severity. Alterations in the molar yield of de novo and preformed FA suggest relevant differences in the mechanisms underlying MFD in RESPON+ and RESPON−, with interspecies effects being observed only in more tolerant animals. Further research is still required to elucidate key determinants of responsiveness to MFD. This work was supported by the Spanish Research State Agency (Agencia Estatal de Investigación) and the European Regional Development Fund (project AGL2017-87812-R, AEI/FEDER, EU). A. Della Badia benefited from an FPI predoctoral contract (PRE2018-086174) and P. G. Toral from a Ramón y Cajal research contract (RYC-2015-17230), from the Spanish Ministries Science and Innovation (MICINN) and of Economy and Competitiveness (MINECO), respectively. Co-funding by the European Social Fund is also acknowledged. The authors have not stated any conflicts of interest. Peer reviewed 2021-10-22T12:47:46Z 2021-10-22T12:47:46Z 2021 artículo http://purl.org/coar/resource_type/c_6501 Journal of Dairy Science 104: 11509-11521 (2021) 0022-0302 http://hdl.handle.net/10261/252883 10.3168/jds.2021-20414 1525-3198 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/AGL2017-87812-R info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PRE2018-086174 info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC-2015-17230 Postprint Della Badía, A.; Hervás, G.; Toral, P.G.; Frutos, P. 2021.; Dataset: Individual differences in responsiveness to diet-induced milk fat depression in dairy sheep and goats [Dataset]; DIGITAL. CSIC; http://dx.doi.org/10.20350/digitalCSIC/13869 http://dx.doi.org/10.3168/jds.2021-20414 Sí open American Dairy Science Association |