Genetic parameters for the size of udder cisterns in ewes diagnosed by ultraso- nography among breeds: Improved Valachian, Tsigai, Lacaune and their crosses
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Comparison of external udder measurements of the sheep breeds Improved Valachian, Tsigai, Lacaune and their crosses
Morphological udder traits have recently become of greater interest from farmers to researchers. In dairy ewes, the udder is very important due to its physiological and conformational characteristics. External udder traits were measured in ewes (Ovis aries L.) of nine genotypes (355 ewes) created of the basis of Improved Valachian (IV), Tsigai (T), and Lacaune (LC) breeds (six traits; 1185 data...
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Anatomical and morphological characteristics of sheep’s mammary gland, their relationship with milk production, milking-ability of the machines and manageability, have become a center of attention among farmers and scientists. Functional traits have become important for efficient breeding schemes in the dairy goat and sheep industries, mainly in Mediterranean countries, due to increased costs o...
متن کاملFactors affecting milk yield and ewe’s lactation curves estimated with test-day models
Test-day records of purebred Tsigai, Improved Valachian and Lacaune ewes were analysed with a general linear model in order to investigate the effects of flock-test day, lactation number, days in milk, litter size and month of lambing. In total, 121 576 (Tsigai), 247 902 (Improved Valachian) and 2 196 (Lacaune) test-day records gathered over the period 1995–2005 were included in the analyses. A...
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Tsigai and Improved Valachian are the most spread sheep breeds in Slovakia. Both are multi-purpose breeds (Krupová et al., 2009), well adapted to local climate and environment. Tsigai is one of the oldest native breeds in areas from 500 to 800 m above sea level, mostly in the semi-extensive production system (Krupová et al., 2009), while improved Valachian is mostly kept in mountains and foothi...
متن کاملGrowth Intensity of Lambs during Artificial Milk Rearing Depending on Chosen Non Genetic Factors
The aim of the research was to evaluate the influence of sex, breeding group, litter size and age of lambs when placed in lambing pens for their growth rate during rearing. The average daily gain of lambs was evaluated based on their weighing data each week after their placement into lambing pens. Lambs of Improved Valachian, Tsigai and Lacaune breed (n=26) had been gradually integrated to the ...
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