搜索结果: 1-10 共查到“动物学 Cow”相关记录10条 . 查询时间(0.109 秒)
Impact of glucogenic additive in transition dairy cow diets of varying ruminal starch degradability on yield and composition of milk and reproductive parameters
cows transition period glucogenic additive propylene glycol
2015/6/23
A two-factorial experiment was carried out on 6 groups (10 animals each) of Polish Black
and White Holstein-Friesian cows in the transition period to determine the effect of glucogenic additive
(G...
Contamination of cow’s raw milk by psychrotrophic and mesophilic microflora in relation to selected factors
milk total bacterial count psychrotrophic bacteria count lipolytic bacteria count proteolytic bacteria count management technology predipping grazing
2015/6/4
The objective of the paper was to analyse the influence of dairy cow management technology, milking method, predipping and summer grazing on the contamination of cow’s raw milk by mesophilic (TBC), ps...
Differences in Voluntary Cow Traffic between Holstein and Illawarra Breeds of Dairy Cattle in a Pasture-based Automatic Milking System
Breed Voluntary Cow Traffic Automatic Milking System
2016/5/16
Automatic milking systems (AMS) rely upon voluntary cow traffic (the voluntary movement of cattle around a farm) for milk harvesting and feed consumption. Previous research on conventional milking sys...
Beef Cow-Calf Production
Beef Cow-Calf Production
2013/6/28
The beef cow-calf business is well adapted to small-scale and part-time farmers who have land suitable for pasture and hay production. This publication discusses marketing and preconditioning, housing...
Maternal Effects of Japanese Shorthorn Cows on the Growth of Embryo-transferred Japanese Black Calves in a Cow-calf Grazing System
Japanese Shorthorn Japanese Black Cattle Embryo Transfer Cow-calf Grazing
2016/5/12
The growth performance of embryo-transferred Japanese Black calves that were born from, and suckled by, Japanese Shorthorn cows in a cow-calf grazing system (BS-group, n = 5) was compared to that of J...
Effect of Dietary Cation-Anion Difference during Prepartum and Postpartum Periods on Performance, Blood and Urine Minerals Status of Holstein Dairy Cow
Dietary Cation-anion Difference Lactation Acid-base Balance Calcium Health Status Dairy Cow
2016/5/9
Twenty four periparturient cows were used to determine the effects of DCAD on acid-base balance, plasma and urine mineral concentrations, health status, and subsequent lactation performance. Each grou...
MHC Class II+ (HLA-DP-like) Cells in the Cow Reproductive Tract: I. Immunolocalization and Distribution of MHC Class II+ Cells in Uterus at Different Phases of the Estrous Cycle
MHC Class II Cow Genital Tract Estrous Cycle
2016/4/27
This study was undertaken to investigate the distribution of major histocompatibility complex class II positive (MHC II+) (HLA-DP-like) cells in the cow uterus (cervix, corpus and cornu uteri) and to ...
Effects of Collection Methods on Recovery Efficiency, Maturation Rate and Subsequent Embryonic Developmental Competence of Oocytes in Holstein Cow
Recovery Efficiency Oocyte Maturation Rate Embryonic Developmental Competence
2016/4/25
Holstein cow ovaries obtained at a slaughterhouse were used to study the influence of the oocyte collection methods (slicing, puncture, aspiration I and II) on recovery efficiency and subsequent in vi...
Effect of Microwave Treatment on Chemical Composition and In sacco Digestibility of Wheat Straw in Yak Cow
Wheat Straw Microwave Dry Matter Crude Protein Acid Detergent Fibre In sacco Degradability
2016/4/18
Wheat straw was treated with microwave for 4 min and 8 min at a power of 750 W and frequency of 2,450 MHz. Chemical compositions of untreated, 4 min treated and 8 min treated straws were analyzed and ...
Study on Genetic Variation of 4 Microsatellite DNA Markers and Their Relationship with Somatic Cell Counts in Cow Milk
Beijing Holstein Cow Microsatellite Markers Genetic Polymorphism Somatic Cell Counts
2016/4/14
Four microsatellite DNA loci BM1818, BM1258, BM1443 and BM1905 associated with the somatic cell counts (SCC) in cow milk were analyzed for genetic variation in 240 Beijing Holstein cows. The PCR ampli...