DAMJAN GRACNER, GERARD GILLIGAN, NICKHOLAS GARVEY, LUIS MOREIRA, PATRICIA HARVEY, AMANDA TIERNEY, ROBERT ZOBEL

Correlation between the milk vein internal diameter surface andmilk yield in Simmental cows

It is known that milk production is directly correlated with the blood flow through the mammary gland, and milk veins drain approximately 90% of the total blood passing through this organ. The aim of the present study was to determine the relationship between milk vein internal diameter surface and milk production in Simmental cows. The milk vein internal diameter was measured by ultrasonography in heifers during the 2nd month of the first gravidity, and again on day 50 following the second calving. After the application of exclusion criteria, the internal vein diameter surface area was mathematically calculated (mm2) for a total of 80 cows. No significant correlation between milk vein internal diameter surface in heifers and milk production for the same animal during the second lactation was recorded. However, greater milk vein internal diameter surface 50 days following the second calving was correlated with higher milk production during the second lactation (P < 0.05). These findings suggest that ultrasonography is a useful tool in calculating the milk vein internal diameter surface as an indicator of possible milk production in Simmental cows.

Anahtar Kelimeler:

Cow, ultrasonography, milk vein, milk production

Correlation between the milk vein internal diameter surface andmilk yield in Simmental cows

Keywords:

Cow, ultrasonography, milk vein, milk production,

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Bickerstaffe R. Uptake and metabolism of fat in the lactating mammary gland. In: Falconer IR, editor. Lactation. London, UK: Butterworths; 1971. pp. 317—332.
Ray DE, Halbach TI, Armstrong DV. Season and lactation number effects on milk production and reproduction of dairy cattle in Arizona. I Dairy Sci 1992; 75: 2976—2983.
Nebel RL, McGilliard ML. Interactions of high milk yield and reproductive performance in dairy cows. I Dairy Sci 1993; 76: 3257—3268.
Gullay MS, Haydn M, Bachman KC, Belloso T, Liboni M, Head HH. Milk production and feed intake of Holstein cows given short (30—d) or normal (60—d) dry periods. I Diary Sci 2003; 86: 2030—2038.
Çilek S, Tekin ME. The environmental factors effecting milk yield and fertility traits of Simmental cattle raised at Kazova State Farm and phenotypic correlations between these traits. TurkI Vet Anim Sci 2005; 29: 987—993.
Tekerli M, Kucukkebabci M, Akalin NH, Kocak S. Effects of environmental factors on some milk production traits, persistency and calving interval of Anatolian buffaloes. Liv Prod Sci 2001; 68: 275—281.
Hansen PI. Effects of coat colour on physiological responses to solar radiation in Holsteins. Vet Rec 1990; 13: 333—334.
Çilek S, Tekin ME. Calculation of adjustment factors for standardizing lactations to mature age and 305 days and estimation of heritability and repeatability of standardized milk yield of Simmental cattle reared on Kazova State Farm. TurkI Vet Anim Sci 2006; 30: 283—289.
Catillo G, Macciotta NPP, Carretta A, Cappio-Borlino A. Effects of age and calving season on lactation curves of milk production traits in Italian water buffaloes. I Dairy Sci 2002; 85: 1298—1306.
Özçelik M, Arpacık R. The effect of lactation number on milk production and reproduction in Holstein cows. Turk I Vet Anim Sci 2000; 24: 39—44.
Budras KD, Wünsche A. Arterien, Venen und Nerven der Beckenhöhle. In: Budras KD, Wünsche A, editors. Atlas der Anatomie des Rindes: Lehrbuch für Tierârzte und Studierende. lst ed. Hannover, Germany: Schlütersche; 2002. pp. 84—87 (in German).
Huth FW. Die Laktation des Rindes: Analyse, EinşuŞ, Korrektur. Stuttgart, Germany: Eugen Ulmer GmbH & Co.; 1995 (in German). the Şrst calving and future milk yield for dairy cows of different breeds. If conŞrmed, these results would improve predictive methodology and facilitate selection of cows on commercial dairy farms for increased milk production.
Linzell IL. Mammary—gland blood şow and oxygen, glucose and volatile fatty acid uptake in the conscious goat. I Phys 1960; 153: 492—509.
Gravert HO. Die Milch: Erzeugung, Gewinnung, Qualitat. Stuttgart, Germany: Eugen Ulmer GmbH & Co.; 1983 (in German).
Davis SR, Collier RI. Mammary blood şow and regulation of substrate supply for milk synthesis. I Dairy Sci 1985; 68: 1041— 1058.
Kensinger MH, Collier RI, Wilcox CI, Caton D. Variability of resting mammary blood şow in nonlactating Holstein cows. I Dairy Sci 1983, 66: 1742—1746.
Braun U, Hoegger R. B-mode and colour Doppler ultrasonography of the milk vein in 29 healthy Swiss Braunvieh cows. Vet Rec 2008;163: 47—49.
Braun U, Forster E. B—mode and colour Doppler sonographic examination of the milk vein and musculophrenic vein in dry cows and cows with a milk yield of 10 and 20 kg. Acta Vet Scan 2012; 54: 15.
King A. Do milk veins indicate dairy capacity? Hoard’s Dairyman 1912; 44: 523—524.
Becker RB. Certain points of the physiological processes of the cow: şow of venous blood from the udder. I Dairy Sci 1937; 20: 409—4 10.
Kjaersgaard P. Mammary blood şow ante and post partum in cows. Acta Vet Scan 1968; 9: 180—181.
Braun U, Forster E, Bleul U, Hâssig M, Schwarzwald C. B-mode and colour Doppler ultrasonography of the milk vein and musculophrenic vein in eight cows during lactation. Res Vet Sci 2013; 94: 138—143.
Edmonson AI, Lean II, Weaver LD, Farver T, Webster G. A body condition scoring chart for Holstein dairy cows. I Dairy Sci 1989; 1: 68—78.
Braun U, Hoegger R, Haessig M. Colour-Doppler sonography of the musculophrenic vein in cows. Vet] 2009; 179: 451—454.
Ferrell CL, Garrett WN, Hinman N. Growth, development and composition of the udder and gravid uterus of beef heifers during pregnancy. I Anim Sci 1976; 42: 1477—1489.
Dowling DF. The significance of the thickness of cattle skin. I Agri Sci 1964; 3: 307—311.