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Environmental and genetic factors affecting milk yield and quality in three Italian sheep breeds

Published online by Cambridge University Press:  23 December 2016

Maria Selvaggi ,
Angela Gabriella D'Alessandro  and
Cataldo Dario
Maria Selvaggi*
Affiliation:
Department of DETO, Section of Veterinary Science and Animal Production, University of Bari ‘Aldo Moro’, Valenzano, Italy
Angela Gabriella D'Alessandro
Affiliation:
Department of Agro-Environmental and Territorial Sciences, University of Bari ‘Aldo Moro’, Bari, Italy
Cataldo Dario
Affiliation:
Department of DETO, Section of Veterinary Science and Animal Production, University of Bari ‘Aldo Moro’, Valenzano, Italy
*
*For correspondence; e-mail: maria.selvaggi@uniba.it
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Abstract

The aims of the study described in the Research Communication were to determine the level of influence of some environmental factors on milk yield and quality traits, including lactose, and lactation length in ewes belonging to three different Italian breeds and to estimate the heritability for the same traits. A total of 2138 lactation records obtained from 535 ewes belonging to three different Italian breeds (Comisana, Leccese, and Sarda) were used. Breed significantly affected all of the considered traits. Moreover, year of lambing affected milk yield and lactation length without influence on milk quality traits. Parity affected significantly only the milk yield, whereas type of birth showed its effect on milk yield, fat, protein, and lactose yield. On the whole, the presently reported heritability estimates are within the range of those already obtained in other dairy breeds by other authors, with values for lactation length being very low in all the investigated populations. Considering the heritability estimates for lactose content and yield, to the best of our knowledge, there is a lack of information on these parameters in ovine species and this is the first report on heritability of lactose content and yield in dairy sheep breeds. Our results suggest that genetic variability for milk traits other than lactation length is adequate for selection indicating a good response to selection in these breeds.

Keywords

HeritabilityItalian dairy sheepmilk productionlactose
Type
Research Article
Information
Journal of Dairy Research , Volume 84 , Issue 1 , February 2017 , pp. 27 - 31
Copyright
Copyright © Proprietors of Journal of Dairy Research 2016 

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References

Becker, WA 1968 Estimation of variance components and heritability. In Manual of Procedures in Quantitative Genetics, 2nd edn, pp. 7–59. Pullman, USA: Student Book Corporation, Washington State University Google Scholar
Brito, LF, Silva, FG, Melo, ALP, Caetano, GC, Torres, RA, Rodrigues, MT & Menezes, GRO 2011 Genetic and environmental factors that influence production and quality of milk of Alpine and Saanen goats. Genetics and Molecular Research 10 3794–3802 Google Scholar
Duncan, DB 1955 Multiple range and multiple F tests. Biometrics 11 1–42 CrossRefGoogle Scholar
Gutiérrez, JP, Legaz, E & Goyache, F 2007 Genetic parameters affecting 180-days standardised milk yield, test-day milk yield and lactation length in Spanish Assaf (Assaf. E) dairy sheep. Small Ruminant Research 70 233–238 Google Scholar
Hamann, H, Horstick, A, Wessels, A & 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 CrossRefGoogle Scholar
Hassan, HA 1995 Effects of crossing and environmental factors on production and some constituents of milk in Ossimi and Saidi sheep and their crosses with Chios. Small Ruminant Research 18 165–172 Google Scholar
Izquierdo, M, Corral, JM, Padilla, JA & Hernández, FI 2010 Variance components and genetic correlations of milk production and composition in Merino sheep. In Proceedings of the 9th World Congress on Genetics Applied to Livestock Production, pp. 2–133. Leipzig, GermanyGoogle Scholar
Macciotta, NPP, Cappio-Borlino, A & Pulina, G 1999 Analysis of environmental effects on test day milk yields of Sarda dairy ewes. Journal of Dairy Science 82 2212–2217 CrossRefGoogle ScholarPubMed
Matutinovic, S, Kalit, S, Salajpal, K & Vrdoljak, J 2011 Effects of flock, year and season on the quality of milk from an indigenous breed in the sub-Mediterranean area. Small Ruminant Research 100 159–163 Google Scholar
Oravcová, M, Margetín, M, Peskovicova, D, Dano, J, Milerski, M, Hetényi, L & Polák, P 2007 Factors affecting ewe's milk fat and protein content and relationships between milk yield and milk components. Czech Journal of Animal Science 52 189–198 Google Scholar
Pollott, GE & Gootwine, E 2001 A genetic analysis of complete lactation milk production in improved Awassi sheep. Livestock Production Science 71 37–47 Google Scholar
Ptak, E, Brzozowski, P & Bieniek, J 2012 Genetic parameters for lactose percentage in the milk of Polish Holstein-Friesians. Journal of Animal and Feed Sciences 21 251–262 Google Scholar
Riggio, V, Finocchiaro, R, Van Kaam, JB, Portolano, B & Bovenhuis, H 2007 Genetic parameters for milk somatic cell score and relationships with production traits in primiparous dairy sheep. Journal of Dairy Science 90 1998–2003 Google Scholar
Sanna, SR, Carta, A & Casu, S 1997 (Co) variance component estimates for milk composition traits in Sarda dairy sheep using a bivariate animal model. Small Ruminant Research 25 77–82 Google Scholar
SAS 1999 SAS/STAT, User's Guide, Version 8. Cary, NC: SAS Institute Google Scholar
Selvaggi, M, Laudadio, V, Dario, C & Tufarelli, V 2014 Investigating the genetic polymorphism of sheep milk proteins: a useful tool for dairy production. Journal of the Science of Food and Agriculture 94 3090–3099 Google Scholar
Sevi, A, Taibi, L, Albenzio, M, Muscio, A & Annicchiarico, G 2000 Effect of parity on milk yield, composition, somatic cell count, renneting parameters and bacteria counts of Comisana ewes. Small Ruminant Research 37 99–107 CrossRefGoogle ScholarPubMed
Sneddon, NW, Lopez-Villalobos, N, Davis, SR, Hickson, RE & Shalloo, L 2015 Genetic parameters for milk components including lactose from test day records in the New Zealand dairy herds. New Zealand Journal of Agricultural Research 58 97–107 Google Scholar
Stoop, WM, Bovenhuis, H & Van Arendonk, JAM 2007 Genetic parameters for milk urea nitrogen in relation to milk production traits. Journal of Dairy Science 90 1981–1986.Google Scholar