|
|
|
|
|
| Zipp, Katharina A.; Rzehak, Y.; Knierim, Ute. |
| The influence of three calf rearing systems on milk yield, milk composition, udder 18:00, n=11) and no damtheir dam after birth. In the 10th week of life contact dams and calves were physicallyseparated and had only visual contact. They were trained to drink from nipple buckets. In the 11th week of life thcontact. All calves were gradually weaned from milk until the 13th- cows and those gave less milk than-indicating disturbed milk ejection. Udder health was not affected. Nursed calves grew ut after separation there was a growth check. However, two weeks after weaning live weights of dam reared calves were still significantly higher Hence, our results suggest that half-day mother-calfcontact helps to decrease milk losses while calf development is still... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/31959/1/Wenn%20Milchk%C3%BChe%20ihre%20K%C3%A4lber%20s%C3%A4ugen%20-%20freier%20vs..pdf |
| |
|
|
| Zipp, Katharina A.; Köhler, Christine; Johns, Julia; Knierim, Ute. |
| Es wird vermutetet, dass Hörner bei der Thermoregulation von Rindern eine Rolle spielen könnten. Deshalb wurde die Atemfrequenz, als Indikator für Hitzestress, von behornten und enthornten Europäischen Milchkühen, die gemeinsam in einer Herde im Stall gehalten wurden, erfasst. Die Gruppenzusammensetzung (N=7) war bezüglich Laktationsstand (35-354 d), Milchleistung (5,6-36,6 kg/d) und Fellfarbe balanciert. Die Atemfrequenz jedes Tieres wurde an fünf aufeinanderfolgenden Tagen durch eine Person erfasst. Der Temperature Humidity Index (THI) wurde alle 10 min. im Stall gemessen. Zur Datenanalyse wurde ein gemischtes Modell verwendet (zufälliger Faktor: Tier, fixe Faktoren: Hornstatus, THI). Der THI lag zwischen 71,9-81,5 (Mittel=75,9). Mit steigendem THI,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2019 |
URL: http://orgprints.org/36163/1/Beitrag_236_final_a.pdf |
| |
|
|
| Zipp, Katharina A.; Barth, Kerstin; Knierim, Ute. |
| Farmers who are interested to rear calves together with the dairy cows during the first weeks of life are confronted with problems of poor milk let-down during machine milking. Therefore it was investigated whether 3 calf-associated stimuli were capable to enhance milkability of the cows. In this contribution, the effect of the stimulations during milking on heart rate (HR) and agitation (rumination, posture of the head and behaviour during udder preparation)are presented. Olfactory (calf hair), tactile (teat massage) and acoustic(recorded calf calls)stimulation were tested on 15 dairy cows with permanent contact to their calves and 22 control cows. All cows were milked twice daily. Stimulation tests were conducted in 3 consecutive weeks during day 25–51... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/23965/1/23965_MM.pdf |
| |
|
|
| Zipp, Katharina A.; Barth, Kerstin; Knierim, Ute. |
| Farmers who are interested to rear calves together with the dairy cows during the first weeks of life are confronted with problems of poor milk let-down during machine milking. This study investigates the influence of three calf-associated stimuli during milking on milk yield, milk content and milk flow characteristics: olfactory (calf hair), tactile (teat massage) and acoustic (recorded calf calls) stimulation including 14 dairy cows with permanent contact to their calves (group KM) and 22 control cows (group M). All cows were milked twice daily. Stimulation tests were conducted in three consecutive weeks during day 25-51 of lactation, each stimulus tested in four milkings versus four milkings without stimulation. Mixed models with the fixed factors... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/21502/1/21502_Zipp.pdf |
| |
|
|
|
