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Evaluation of reference lactation length in Chios dairy sheep

Published online by Cambridge University Press:  26 April 2018

Z. Basdagianni ,
E. Sinapis  and
G. Banos Open the ORCID record for G. Banos [Opens in a new window]
Z. Basdagianni*
Affiliation:
Department of Animal production, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
E. Sinapis
Affiliation:
Department of Animal production, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
G. Banos
Affiliation:
Department of Animal Production, Ichthyology, Ecology and Environmental Protection, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece Scotland’s Rural College and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
*
†E-mail: [email protected]
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Abstract

Definition and establishment of a fixed reference lactation length could provide useful tools for on-farm comparison of ewes and flock management as well as genetic evaluations for the breeding programme. The objectives of this study were to (i) evaluate different reference lactation lengths for the Chios dairy sheep and (ii) define the most suitable reference length for the breed. A total of 260 042 test-day milk records from 24 474 ewes in 130 flocks collected between 2003 and 2014 were used; 15 different lactation lengths were evaluated ranging from 120 to 260 days, defined at 10-day intervals as reference for the Chios sheep. The evaluation criteria included: (a) heritability and repeatability of milk yield in each reference lactation, (b) genetic correlation of reference lactation milk yield with actual lactation milk yield and yield at first test-day record and (c) correlated response in reference lactation milk yield from selection based on first test-day milk yield. The latter emulates genetic gains achieved for milk yield based on early lactation selection. Heritability and repeatability estimates of reference lactation milk yield and genetic correlation with actual lactation yield favoured long reference lactations (180 to 230 days). On the contrary, correlation with first test-day record milk yield was higher for short lactations (120 to 170 days). Moreover, selection on first test-day record milk yield would lead to a correlated response in reference yield in 220 days equal to 85% of the highest estimate achieved in the maximum reference length of 260 days (190 days when only considering first lactation milk yield). Based on the results of the present study, an overall reference lactation length for the Chios breed of 220 days post-lambing and a first lactation reference length of 190 days post-lambing are recommended.

Keywords

standard lactation lengthmilkChios breedsheep managementgenetic improvement
Type
Research Article
Information
animal , Volume 13 , Issue 1 , January 2019 , pp. 1 - 7
Copyright
© The Animal Consortium 2018 

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References

Banos, G, Arsenos, G, Abas, Z and Basdagianni, Z 2005. Population parameter estimation of daily milk yield of the Chios sheep using test-day random regression models and Gibbs sampling. Animal Science 81, 233–238.Google Scholar
Barillet, F 1985. Amélioration génétique de la composition du lait des brebis: l’exemple de la race Lacaune (Genetic improvement for ewe milk composition. The case of Lacaune breed). PhD thesis, INA Paris, Grignon, France.Google Scholar
Barillet, F 1997. Genetics of milk production. In the Genetics of sheep (ed. L Piper and A Ruvinsky), pp. 539–564. CAB International, New York, USA.Google Scholar
Basdagianni, Z, Banos, G, Abas, Z, Arsenos, G, Sinapis, E and Zygoyiannis, D 2004. Evaluation and definition of reference lactation length in Chios dairy sheep Proceedings of the 34th Biennial Session of International Committee for Animal Recording, 29 May to 3 June 2004, Sousse, Tunisia, pp. 121–125.Google Scholar
Berger, ΥΜ and Thomas, DL 2004. Μilk testing, calculation of milk production, and adjustment factors. Proceedings of the 10th Great Lake Dairy Sheep Symposium, 4 to 6 November 2004, Madison, pp. 55–62.Google Scholar
Cappelletti, CA, Rozen, FMB, De La Fuente, LF and San Primitivo, F 2006. Extension factors for part-lactation in Churra sheep breed. Small Ruminant Research 63, 282–287.Google Scholar
Carriedo, JA, Baro, JA, De La Fuente, LF and San Primitivo, F 1995. Genetic parameters for milk yield in dairy sheep. Journal of Animal Breeding and Genetics 112, 59–63.Google Scholar
Carta, A, Casu, S and Salaris, S 2009. Invited review: current state of genetic improvement in dairy sheep. Journal of Dairy Science 92, 5814–5833.Google Scholar
Carta, A, Sanna, SR, Rosati, A and Casu, S 1998. Milk yield adjustments for milking length and age parity lambing month interaction in Sarda dairy sheep. Annales de Zootechnie 47, 59–66.Google Scholar
De La Fuente, LF, Baro, JA and San Primitivo, F 1995. Breeding programme for Spanish Churra sheep breed. Cahiers Options Méditerranéennes 11, 165–172.Google Scholar
El-Saied, UM, Carriedo, JA, Baro, JA, De La Fuente, LF and San Primitivo, F 1998a. Genetics correlations and heritabilities for milk yield and lactation length of dairy sheep. Small Ruminant Research 27, 217–221.Google Scholar
El-Saied, UM, Carriedo, JA, De La Fuente, LF and San Primitivo, F 1998b. Genetic and environmental estimations for test-day and standardized milk yield of dairy sheep. Small Ruminant Research 27, 209–215.Google Scholar
Gabina, D, Arrese, F, Arranz, J and Beltran de Heredia, I 1993. Average milk yield and environmental effects on Latxa sheep. Journal of Dairy Science 76, 1191–1198.Google Scholar
Gilmour, AR, Gogel, BJ, Cullis, BR, Welham, SJ and Thompson, R 2014. ASReml user guide release 41 functional specification. VSN International Ltd, Hemel Hempstead, UK.Google Scholar
Gutierrez, JP, Legaz, E and Goyache, F 2007. Genetic parameters affecting 180-days standardised milk yield, test-day milk yield and lactation length in Spanish Assaf (AssafE) dairy sheep. Small Ruminant Research 70, 233–238.Google Scholar
Hamann, H, Horstick, A, Wessels, A and Distl, O 2004. Estimation of genetic parameters for test day milk production, somatic cell score and litter size at birth in East Friesian ewes. Livestock Production Science 87, 153–160.Google Scholar
International Committee for Animal Recording (ICAR) 2017. ICAR guidelines: Dairy Sheep and Goats. Retrieved on 23 January 2018 from http://www.icar.org.Google Scholar
Jonas, E, Thomson, P, Hall, E, McGill, D, Lam, M and Raadsma, H 2011. Mapping quantitative trait loci (QTL) in sheep IV analysis of lactation persistency and extended lactation traits in sheep. Genetics Selection Evolution 43, 22.Google Scholar
Kominakis, A, Rogdakis, E and Koutsotolis, K 1998. Genetic parameters for milk yield and litter size in Boutsiko dairy sheep. Canadian Journal of Animal Science 78, 525–532.Google Scholar
Kominakis, A, Volanis, M and Rogdakis, E 2001. Genetic modelling of test day records in dairy sheep using orthogonal Legendre polynomials. Small Ruminant Research 39, 209–217.Google Scholar
Komprej, A, Malovrh, Š, Gorjanc, G, Kompan, D and Kovač, M 2013. Genetic and environmental parameters estimation for milk traits in Slovenian dairy sheep using random regression model. Czech Journal of Animal Science 58, 125–135.Google Scholar
Legarra, A and Ugarte, E 2001. Genetic parameters of milk traits in Latxa dairy sheep. Animal Science 73, 407–412.Google Scholar
Lidauer, M, Mantysaari, EA and Stranden, I 2003. Comparison of test-day models for genetic evaluation of production traits in dairy cattle. Livestock Production Science 79, 73–86.Google Scholar
Ligda, Ch, Gabreilidis, G, Papadopoulos, Th and Georgoudis, A 2000. Estimation of genetic parameters for production traits of Chios sheep using a multitrait animal model. Livestock Production Science 66, 217–221.Google Scholar
Macciotta, NPP, Mele, M, Cappio-Borlino, A and Secchiari, P 2005. Issues and perspectives in dairy sheep breeding. Italian Journal of Animal Science 4, 5–23.Google Scholar
Mavrogenis, AP and Papachristoforou, Ch 1990. Use of part lactation records for selection in Chios sheep and Damascus Goats. Technical Bulletin, 122 Agricultural Research Institute, Ministry of Agriculture and Natural Resources Nicosia, Cyprus, 1-7.Google Scholar
Moioli, BM and Pilla, AM 1994. Genetic evaluation of dairy sheep with an animal model for annual or partial lactation production. Journal of Dairy Science 77, 609–615.Google Scholar
Nikolaou, M, Kominakis, AP, Rogdakis, E and Zampitis, S 2004. Effect of mean and variance heterogeneity on genetic evaluations of Lesbos dairy sheep. Livestock Production Science 88, 107–115.Google Scholar
Oravcova, M 2014. Variance components and genetic parameters estimated for daily milk yield in individual months of lactation: the case of Tsigai sheep. Veterinarija ir Zootechnika 68, 55–59.Google Scholar
Oravcova, M, Margetın, M, Peskovicova, D, Dano, J, Milerski, M, Hetenyi, L and Polak, P 2006. Factors affecting milk yield and ewe’s lactation curves estimated with test-day models. Czech Journal of Animal Science 51, 483–490.Google Scholar
Pollott, GE and Gootwine, E 2001. A genetic analysis of complete lactation in improved Awassi sheep. Livestock Production Science 71, 37–47.Google Scholar
Portolano, B, Montalbano, L and Militi, W 2001. Genetic and environmental sources of variation for milk yield traits in Barbaresca Siciliana breed. Small Ruminant Research 41, 195–202.Google Scholar
Rekaya, R, Carabano, MJ and Toro, MA 1999. Use of test day yields for the genetic evaluation of production traits in Holstein-Friesian cattle. Livestock Production Science 57, 203–217.Google Scholar
Rosati, A and Fioretti, M 2001. Reference length milk production projection for Italian dairy sheep breeds. Proceedings of the 32nd Biennial Session of International Committee for Animal Recording, 14 to 19 May 2000, Bled, Slovenia, pp. 91–96.Google Scholar
Sanna, SR, Carta, A and Casu, S 1997. Covariance component estimates for milk composition traits in Sarda sheep using a bivariate model. Small Ruminant Research 25, 77–82.Google Scholar
Schaeffer, LR, Jamrozik, J, Kistemaker, GJ and Van Doornmaal, BJ 2000. Experience with a test-day model. Journal of Dairy Science 83, 1135–1144.Google Scholar
Selvaggi, M, D’Alessandro, AG and Dario, C 2017. Environmental and genetic factors affecting milk yield and quality in three Italian sheep breeds. Journal of Dairy Research 84, 27–31.Google Scholar
Serrano, M, Perez-Guzman, MD, Montoro, V and Jurado, JJ 2003. Genetic analysis of somatic cell count and milk traits in Manchega ewes Mean lactation and test-day approaches. Livestock Production Science 84, 1–10.Google Scholar
Silvestre, AM, Petim-Batista, F and Colaco, J 2005. Genetic parameter estimates of Portuguese dairy cows for milk, fat and protein using a spline test-day model. Journal of Dairy Science 88, 1225–1230.Google Scholar
Ugarte, E, Serrano, M, De La Fuente, LF, Perez-Guzmam, MD, Alfonso, L and Gutierrez, JP 2002. Situación actual de los programas de mejora genética en ovino de leche (current state of breeding dairy sheep programs). Información Técnica Económica Agraria (ITEA) 98, 102–117.Google Scholar
Van Vleck, D 1981. Notes on the theory and application of selection principles for the genetic improvement of animal, 4th edition. Cornell University Press, Ithaca, NY, USA.Google Scholar
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