[
Ahmadi B., Mirshahi A., Giffin J., Oliveira M.E.F., Gao L., Hahnel A., Bartlewski P.M. (2013). Preliminary assessment of the quantitative relationships between testicular tissue composition and ultra-sonographic image attributes in the ram. Vet. J., 198: 282–285.
]Search in Google Scholar
[
Balthazar C.F., Pimentel T.C., Ferrão L.L., Almada C.N., Santillo A., Albenzio M., Mollakhalili N., Mortazavian A.M., Nascimento J.S., Silva M.C., Freitas M.Q., Sant’Ana A.S., Granato D., Cruz A.G. (2017). Sheep milk: physicochemical characteristics and relevance for functional food development. Compr. Rev. Food Sci. Food Saf., 16: 247–262.
]Search in Google Scholar
[
Barbagianni M.S., Gouletsou P.G., Valasi I., Petridis I.G., Giannenas I., Fthenakis G.C. (2015). Ultrasonographic findings in the ovine udder during lactogenesis in healthy ewes or ewes with pregnancy toxaemia. J. Dairy Res., 82: 293–303.
]Search in Google Scholar
[
Bartlewski P.M., Sohal J., Paravinja V., Baby T., Oliveira M.E.F., Murawski M., Schwarz T., Zięba D.A., Keisler D.H. (2017). Is progesterone the key regulatory factor behind ovulation rate in sheep? Domest. Anim. Endocrinol., 58: 30–38.
]Search in Google Scholar
[
Bergman E.N. (1990). Energy contributions of volatile fatty acids from the gastrointestinal tract in various species. Physiol. Rev., 70: 567–590.
]Search in Google Scholar
[
Bouvier-Muller J., Allain C., Enjalbert F., Tabouret G., Portes D., Caubet C., Tasca C., Foucras G., Rupp R. (2016). Response to dietary-induced energy restriction in dairy sheep divergently selected for resistance or susceptibility to mastitis. J. Dairy Sci., 99: 480–492.
]Search in Google Scholar
[
Butler W., Fullenkamp S., Cappiello L., Handwerger S. (1981). The relationship between breed and litter size in sheep and maternal serum concentrations of placental lactogen, estradiol and progesterone. J. Anim. Sci., 53: 1077–1081.
]Search in Google Scholar
[
Cannas A., Nudda A., Pulina G. (2002). Nutritional strategies to improve lactation persistency in dairy ewes. Dairy Sheep Symp. Proc. Univ. Sassari, Sardinia, IT.
]Search in Google Scholar
[
Chilliard Y., Ferlay A., Mansbridge R.M., Doreau M. (2000). Ruminant milk fat plasticity: nutritional control of saturated, polyun-saturated, trans and conjugated fatty acids. Ann. Zootech., 49: 181–205.
]Search in Google Scholar
[
Claeys W.L., Verraes C., Cardoen S., De Block J., Huyghebaert A., Raes K., Dewettinck K., Herman L. (2014). Consumption of raw or heated milk from different species: An evaluation of the nutritional and potential health benefits. Food Control., 42: 188–201.
]Search in Google Scholar
[
Claps S., Roberta R., Di Trana A., di Napoli M.A., Giorgio D., Sepe L. (2018). Bioactive compounds in goat milk and cheese: The role of feeding system and breed. Goat Science. InTech open science/open minds in press. London, UK, pp. 233–263.
]Search in Google Scholar
[
Conte G., Palombo V., Serra A., Correddu F., D’Andrea M., Macciotta N.P., Mele M. (2022). Study of the fatty acid profile of milk in different sheep breeds: evaluation by multivariate factorial analysis. Animals, 12.
]Search in Google Scholar
[
Currò S., Manuelian C.L., De Marchi M., Claps S., Rufrano D., Neglia G. (2019). Effects of breed and stage of lactation on milk fatty acid composition of Italian goat breeds. Animals, 9: 764.
]Search in Google Scholar
[
Czarnota G.J., Kolios M.C., Vaziri H., Benchimol S., Ottensmeyer F.P., Sherar M.D., Hunt J.W. (1997). Ultrasonic biomicroscopy of viable, dead and apoptotic cells. Ultrasound Med. Biol., 23: 961–965.
]Search in Google Scholar
[
EFSA AHAW Panel (EFSA Panel on Animal Health and Welfare) (2014). Scientific opinion on the welfare risks related to the farming of sheep for wool, meat and milk production. EFSA J., 12: 3933.
]Search in Google Scholar
[
Fasulkov I. (2012). Ultrasonography of the mammary gland in ruminants: A review. Bulg. J. Vet. Med., 15: 1–12.
]Search in Google Scholar
[
Garaffo M.A., Vassallo-Agius R., Nengas Y., Lembo E., Rando R., Maisano R., Dugo G., Giuffrida D. (2011). Fatty acids profile, atherogenic (IA) and thrombogenic (IT) health lipid indices, of raw roe of blue fin tuna (Thunnus thynnus L.) and their salted product “Bottarga.” Food Nutr. Diet., 2: 736–743.
]Search in Google Scholar
[
Gębarowska D., Wierzchoś E., Murawski M., Gregoraszczuk E. (1996). Comparison of ovarian follicles (stage, number and estradiol concentration) in high fecundity Olkuska sheep, low fecundity Polish Mountain sheep and their crossbreeds. Endocr. Regul., 30: 195–200.
]Search in Google Scholar
[
Giffin J.L., Franks S.E., Rodriguez-Sosa J.R., Hahnel A., Bartlewski P.M. (2009). A study of morphological and haemodynamic determinants of testicular echotexture characteristics in the ram. Exp. Biol. Med., 234: 794–801.
]Search in Google Scholar
[
Guilford J., Fruchter B. (1978). Fundamental statistics in psychology and education. McGraw-Hill, New York, 6th ed.
]Search in Google Scholar
[
Hegarty R.S. (2004). Genotype differences and their impact on digestive tract function of ruminants: a review. Aust. J. Exp. Agric., 44: 459–467.
]Search in Google Scholar
[
Inácio M.R.C., de Moura M.d.F.V., de Lima K.M.G. (2011). Classification and determination of total protein in milk powder using near infrared reflectance spectrometry and the successive projections algorithm for variable selection. Vib. Spectrosc., 57: 342–345.
]Search in Google Scholar
[
Jasińska M., Dmytrów I., Mituniewicz-Małek A., Krystian W. (2010). Cow feeding system versus milk utility. Acta Sci. Pol. Technol. Aliment., 9: 189–199.
]Search in Google Scholar
[
Jasti L.S., Dola S.R., Fadnavis N.W., Addepally U., Daniels S., Ponrathnam S. (2014). Co-immobilized glucose oxidase and β-galactosidase on bovine serum albumin coated allyl glycidyl ether (AGE)–ethylene glycol dimethacrylate (EGDM) copolymer as a biosensor for lactose determination in milk. Enzyme Microb. Technol., 64–65: 67–73.
]Search in Google Scholar
[
Ledoux M., Chardigny J.M., Darbois M., Soustre Y., Sébédio J.L., Laloux L. (2005). Fatty acid composition of French butters, with special emphasis on conjugated linoleic acid (CLA) isomers. J. Food Compos. Anal., 18: 409–425.
]Search in Google Scholar
[
Lérias J.R., Hernández-Castellano L.E., Suárez-Trujillo A., Castro N., Pourlis A., Almeida A.M. (2014). The mammary gland in small ruminants: major morphological and functional events underlying milk production – a review. J. Dairy Res., 81: 304–318.
]Search in Google Scholar
[
Lin M., Lewis M.J., Grandison A.S. (2006). Measurement of ionic calcium in milk. Int. J. Dairy Technol., 59: 192–199.
]Search in Google Scholar
[
Lipid Anal. Lab. Inc. (n.d.). Fatty Acid Profiling. Last accessed: April 20, 2022. Available from: https://www.lipidanalytical.com/services/fatty-acid-profiling
]Search in Google Scholar
[
Lock A.L., Bauman D.E. (2004). Modifying milk fat composition of dairy cows to enhance fatty acids beneficial to human health. Lipids., 39: 1197–1206.
]Search in Google Scholar
[
Lucas V.S., Burk R.S., Creehan S., Grap M.J. (2014). Utility of high-frequency ultrasound: moving beyond the surface to detect changes in skin integrity. Plast. Surg. Nurs., 34: 34–38.
]Search in Google Scholar
[
Makovický P., Nagy M., Makovický P. (2013). Comparison of external udder measurements of the sheep breeds Improved Valachian, Tsigai, Lacaune and their crosses. Chil. J. Agric. Res., 73: 366–371.
]Search in Google Scholar
[
Marnet P., Negrão J. (2000). The effect of a mixed-management system on the release of oxytocin, prolactin, and cortisol in ewes during suckling and machine milking. Reprod. Nutr. Dev., 40: 271–281.
]Search in Google Scholar
[
Merz A., Stephan R., Johler S. (2016). Staphylococcus aureus isolates from goat and sheep milk seem to be closely related and differ from isolates detected from bovine milk. Front. Microbiol., 7: 319.
]Search in Google Scholar
[
Milerski M., Margetín M., Capistrak A., Apolen D., Spanik J., Oravcová M. (2006). Relationships between external and internal udder measurements and the linear scores for udder morphology traits in dairy sheep. Czech J. Anim. Sci., 51: 383.
]Search in Google Scholar
[
Milewski S., Ząbek K. (2008). Reproductive, meat and milk performance traits of Charolaise sheep raised in the Warmia and Mazury region (in Polish). Med. Weter., 64: 473–476.
]Search in Google Scholar
[
Molik E., Murawski M., Bonczar G., Wierzchoś E. (2008). Effect of genotype on yield and chemical composition of sheep milk. Anim. Sci. Pap. Rep., 26: 211–218.
]Search in Google Scholar
[
Mougios V., Matsakas A., Petridou A., Ring-Dimitriou S., Sagredos A., Melissopoulou A., Tsigilis N., Nikolaidis M. (2001). Effect of supplementation with conjugated linoleic acid on human serum lipids and body fat. J. Nutr. Biochem., 12: 585–594.
]Search in Google Scholar
[
Murawski M., Schwarz T., Jamieson M., Ahmadi B., Bartlewski P.M. (2019). Echotextural characteristics of the mammary gland during early lactation in two breeds of sheep varying in milk yields. Anim. Reprod., 16: 853–858.
]Search in Google Scholar
[
Norms R.R.R. (1993). Nutrient requirements for cattle and sheep in the traditional system. IZ Kraków, Poland.
]Search in Google Scholar
[
Oravcová M., Margetín M., Peskovicova D., Daňo J., Hetényi L., Polák P. (2006). Factors affecting milk yield and ewe’s lactation curves estimated with test-day models. Czech J. Anim. Sci., 51: 483–490.
]Search in Google Scholar
[
Park Y.W., Juárez M., Ramos M., Haenlein G.F.W. (2007). Physico-chemical characteristics of goat and sheep milk. Small Rumin. Res., 68: 88–113.
]Search in Google Scholar
[
Ptasińska-Marcinkiewicz J. (2013). Changes in the content of selected fatty acids of sheep’s milk depending on the month of lactation (in Polish). Zesz. Nauk. UEK., 906: 5–25.
]Search in Google Scholar
[
Pulina G., Rassu S.P.G., Cannas A. (1993). L’influenza della tecnica di alimentazione per gruppi sulla produzione lattea negli ovini. Proc. Natl. Congr. S.I.P.A.O.C., Riccione, Italy, pp. 2003–2006.
]Search in Google Scholar
[
Revilla I., Escuredo O., González-Martín M.I., Palacios C. (2017). Fatty acids and fat-soluble vitamins in ewe’s milk predicted by near infrared reflectance spectroscopy. Determination of seasonality. Food Chem., 214: 468–477.
]Search in Google Scholar
[
Rovai M., Such X., Piedrafita J., Caja G., Pujol M.R. (1999). Evolution of mammary morphology traits during lactation and its relationship with milk yield of Manchega and Lacaune dairy sheep. Publ. Assoc. Anim. Prod., 95: 107–112.
]Search in Google Scholar
[
Rovai M., Thomas D., Berger Y., Caja G. (2004). Udder morphology and effects on milk production and ease of milking in dairy sheep. Proc. 10th Great Lakes Dairy Sheep Symposium, Wisconsin, pp. 4–6.
]Search in Google Scholar
[
Santos V.J.C., Simplício K.M.d.M.G., Sanchez D.C.C., Coutinho L.N., Teixeira P.P.M., da Câmara Barros F.F.P., de Almeida V.T., Rodrigues L.F.S., Bartlewski P.M., Oliveira M.E.F., Feliciano M.A.R., Vicente W.R.R. (2015). B-mode and Doppler sonography of the mammary glands in dairy goats for mastitis diagnosis. Re-prod. Domest. Anim., 50: 251–255.
]Search in Google Scholar
[
Schoknecht P., Nobrega S., Petterson J., Ehrhardt R., Slepetis R., Bell A. (1991). Relations between maternal and fetal plasma concentrations of placental lactogen and placental and fetal weights in well-fed ewes. J. Anim. Sci., 69: 1059–1063.
]Search in Google Scholar
[
Schwarz T., Scheeres N., Małopolska M.M., Murawski M., Agustin T.D., Ahmadi B., Strzałkowska N., Rajtar P., Micek P., Bartlewski P.M. (2020). Associations between mammary gland echotexture and milk composition in cows. Animals, 10: 1–11.
]Search in Google Scholar
[
Sevostyanova E.A., Krasilshchik E.A. (2020). Comparative analysis of milk and its nutritional value. Eur. J. Nat. Hist., 3: 34–37.
]Search in Google Scholar
[
Silva S.R., Afonso J.J., Santos V.A., Monteiro A., Guedes C.M., Azevedo J.M.T., Dias-da-Silva A. (2006). In vivo estimation of sheep carcass composition using real-time ultrasound with two probes of 5 and 7.5 MHz and image analysis1. J. Anim. Sci., 84: 3433–3439.
]Search in Google Scholar
[
Snowder G.D., Glimp H.A. (1991). Influence of breed, number of suckling lambs, and stage of lactation on ewe milk production and lamb growth under range conditions. J. Anim. Sci., 69: 923–930.
]Search in Google Scholar
[
Sobiech P., Milewski S., Zduńczyk S. (2008). Yield and composition of milk and blood biochemical components of ewes nursing a single lamb or twins. Bull. Vet. Inst. Pulawy., 52: 591–596.
]Search in Google Scholar
[
Suárez-Trujillo A., Capote J., Argüello A., Castro N., Morales-DelaNuez A., Torres A., Morales J., Rivero M.A. (2013). Effects of breed and milking frequency on udder histological structures in dairy goats. J. Appl. Anim. Res., 41: 166–172.
]Search in Google Scholar
[
Tamime A.Y., Wszolek M., Božanić R., Özer B. (2011). Popular ovine and caprine fermented milks. Small Rumin. Res., 101: 2–16. Ulbricht T.L.V., Southgate D.A.T. (1991). Coronary heart disease: seven dietary factors. Lancet., 338: 985–992.
]Search in Google Scholar
[
Wang Y.M., Fan W., Zhang K., Zhang L., Tan Z., Ma R. (2016). Comparison of transducers with different frequencies in breast contrast-enhanced ultrasound (CEUS) using SonoVue as contrast agent. Br. J. Radiol., 89: 20151050.
]Search in Google Scholar
[
Williams A.R. (2002). Ultrasound applications in beef cattle carcass research and management. J. Anim. Sci., 80: E183–E188.
]Search in Google Scholar
[
Wohlt J.E., Foy W.L., Kniffen D.M., Trout J.R. (1984). Milk yield by Dorset ewes as affected by sibling status, sex and age of lamb, and measurement. J. Dairy Sci., 67: 802–807.
]Search in Google Scholar
[
Wu D., Barrett D.M.W., Rawlings N.C., Giffin J.L., Bartlewski P.M. (2009). Relationships of changes in ultrasonographic image attributes to ovulatory and steroidogenic capacity of large antral follicles in sheep. Anim. Reprod. Sci., 116: 73–84.
]Search in Google Scholar
[
Xin Q., Ling H.Z., Long T.J., Zhu Y. (2006). The rapid determination of fat and protein content in fresh raw milk using the laser light scattering technology. Opt. Lasers Eng., 44: 858–869.
]Search in Google Scholar
[
Yang D., Huynh H.D., Wan Y. (2018). Milk lipid regulation at the maternal-offspring interface. Semin. Cell Dev. Biol., 81: 141–148.
]Search in Google Scholar
[
Zamiri M.J., Qotbi A., Izadifard J. (2001). Effect of daily oxytocin injection on milk yield and lactation length in sheep. Small Rumin. Res., 40: 179–185.
]Search in Google Scholar
[
Zhang X., Ahmad M.J., An Z., Niu K., Wang W., Nie P., Gao S., Yang L. (2022). Relationship between somatic cell counts and mam-mary gland parenchyma ultrasonography in buffaloes. Front. Vet. Sci., 9: 842105.
]Search in Google Scholar
[
Zhu Z., Guo W. (2021). Recent developments on rapid detection of main constituents in milk: a review. Crit. Rev. Food Sci. Nutr., 61: 312–324.
]Search in Google Scholar
[
Zięba D.A., Murawski M., Schwarz T., Wierzchoś E. (2002). Pattern of follicular development in high fecundity Olkuska ewes during the estrous cycle. Reprod. Biol., 2: 39–58.
]Search in Google Scholar
[
Zlatanos S., Laskaridis K., Feist C., Sagredos A. (2002). CLA content and fatty acid composition of Greek Feta and hard cheeses. Food Chem., 78: 471–477.
]Search in Google Scholar
