搜索结果: 1-9 共查到“家畜繁殖学 Friesian”相关记录9条 . 查询时间(0.234 秒)
Genetic correlations between type traits of young Polish Holstein-Friesian bulls and their daughters
dairy cattle conformation traits
2015/7/7
The objective of this study was to evaluate the usefulness of young bulls’ conformation scores
in a national type evaluation system. For this purpose the genetic correlations between conformation tr...
Effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling in East Friesian ewes
stage of lactation ewe milk composition milk properties quality of rennet curdling East Friesian
2015/6/5
The evaluation of the effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling was carried out over the period of three successive years using milk sampl...
Testicular Cell Indices and Peripheral Blood Testosterone Concentrations in Relation to Age and Semen Quality in Crossbred (Holstein Friesian×Tharparkar) Bulls
Fine Needle Aspiration Cytology Testicular Cytogram Testicular Cell Indices Crossbred Bulls
2016/5/17
Present study analyzed the changes in peripheral blood testosterone concentrations and testicular cytogram in relation to age and semen quality in crossbred males. Three different age groups of crossb...
Effects of Cooling and Exogenous Bovine Somatotropin on Hematological and Biochemical Parameters at Different Stages of Lactation of Crossbred Holstein Friesian Cow in the Tropics
Cooling Recombinant Bovine Somatotropin Hematology Blood Chemistry Crossbred Holstein Freisian
2016/5/6
Effects of cooling and supplemental recombinant bovine somatotropin (rbST) on hemato-biochemical characteristics were studied at different stages of lactation of crossbred Holstein Friesian cows in a ...
Interrelationships of growth hormone AluI polymorphism, insulin resistance, milk production and reproductive performance in Holstein-Friesian cows
growth hormone AluI polymorphism dairy cow
2015/3/17
Healthy multiparous Holstein-Friesian cows (n = 22, parity: 2–4) from a large-scale dairy herd in
Hungary were subjected to an intravenous glucose tolerance test 10–15 days after calving. AluI genot...
Effect of Post Insemination Progesterone Supplement on Pregnancy Rates of Repeat Breeder Friesian Cows
Repeat Breeder Cow Progesterone Supplement PRID Pregnancy
2016/4/26
Fifty repeat breeder (RB) Friesian cows were allocated to five groups of 10 cows each, to determine the effect of progesterone (P4) supplement on P4 concentrations and pregnancy rates during the perio...
Coefficients of relationship and inbreeding among Finnish Ayrshire and Holstein-Friesian
Ayrshire Holstein-Friesian inbreeding relationship generation interval
2010/8/13
Pedigree data from national breeding value evaluations were used in calculation of the coefficient and rate of inbreeding, average coefficient and rate of relationship and generation intervals for the...
Reproduction of Cross- and Purebred Friesian Cattle in Northern Thailand with Special Reference to Their Milk Production
Reproduction Milk Production Crossbred Friesian Cow Thailand
2016/4/13
Reproductive data, such as numbers of days to the first estrus and A.I. service postpartum, number of days to conception, number of A.I. services required for conception, interval between the first es...
Effects of Tropical Climate on Reproduction of Cross- and Purebred Friesian Cattle in Northern Thailand
Reproduction Crossbred Friesian Cow Heat Stress Thailand
2016/4/13
In the first part of the study, rates of estrus occurrence and success of A.I. service in the Thai-native and Friesian crossbred, and purebred Friesian cows fed in the National Dairy Training and Appl...