Now showing items 1-10 of 77
Evaluation of vaginal discharge with the Metricheck device and the relationship to reproductive performance in postpartum dairy cows
(Wiley: 12 months, 2014)
Vaginal mucus during estrus was examined with the Metricheck device and the relationship to the reproduction of high-yielding dairy cows was studied. The study was conducted in 99 dairy herds located in Western Germany and ...
Grazing behaviour and dry matter intake of llamas (Lama glama) and German blackhead mutton sheep (Ovis orientalis forma aries) under Central European conditions
(Schlütersche Verlagsgesellschaft, 2015)
Pregnancy-Associated Glycoprotein (PAG) Profile of Holstein-Friesian Cows as Compared to Dual-Purpose and Beef Cows
Pregnancy-associated glycoproteins (PAGs) are produced by mono-and binucleate trophoblast cells in the ruminant placenta. PAG appears in maternal blood and, from approximately 4 weeks after fertilization onward, may serve ...
Comparison of the effects of weaning and castration when conducted separately or in combination on the behaviour of crossbred beef cattle
The objective of the present study was to evaluate the behavioural effects of Burdizzo castration of crossbred beef calves when weaned and castrated separately (castrated 8 weeks after weaning) or in combination. Over two ...
Effects of weaning beef cattle in two stages or by abrupt separation on nasal abrasions, behavior, and weight gain
(CSIRO Publishing, 2015)
The effects of traditional (n = 103) and two-stage weaning (n = 89) on nasal abrasions, behaviour, and weight gain were evaluated in a total of 192 cow-calf pairs. Two-stage calves were prevented from suckling by fitting ...
Sward botanical composition and sward quality affect the foraging behaviour of free-range laying hens.
In a two-year experiment, we investigated the influence of sward plant species composition (sward type), stocking duration and state of sward degradation on the foraging behaviour of chickens. Laying hens (ISA Warren) were ...
Artificial infection of chickens with Capillaria obsignata eggs embryonated in different media
The present study investigated whether incubation media have an impact on infectivity of Capillaria obsignata eggs in chickens infected with gradually increasing doses. C. obsignata eggs collected from female worms were ...
Response to an Ascaridia galli infection in growing chickens in relation to their body weight
(Springer Verlag (Germany), 2014)
It was hypothesized that chickens with extremely varying body weights (BW) from an otherwise homogeneous host sample cope differently with Ascaridia galli (Schrank 1788) infection. Small and large birds, falling into either ...
Establishment of gastro-intestinal helminth infections in free-range chickens: a longitudinal on farm study
(SCHLUETERSCHE VERLAGSGESELLSCHAFT MBH & CO KGSchlütersche Verlagsgesellschaft, 2014)
In conclusion chickens kept on free-range farms are exposed to high risks of nematode infections and have high mortality rates with no obvious link to parasite infections. Once the farm environment is contaminated with the ...
Climatic effects on milk production traits and somatic cell score in lactating Holstein-Friesian cows in different housing systems
(American Dairy Science Association, 2014)
The objective of this study was to compare the effect of the temperature-humidity index (THI) on milk production traits and somatic cell score (SCS) of dairy cows raised in 4 different housing systems: (1) warm loose housing ...