The influence of different degrees of motion activity during the dry period on some reproductive and productive traits of Black and White cows
1998
Gergovska, Z. | Mitev, J. | Otouzbirov, R. | Todorov, N. (Thracian University, Stara Zagora (Bulgaria))
192 dry Black and White cows kept in tie-stall barns during previous lactation and walking only within a limited space have been included in the study.The cows were divided into three groups, as follows: Ist control group - kept in the same housing with free access to 6m2 lot, per cow for walking, II and III group - kept under the same conditions plus additional daily forced exercise.The forced walking of dry cows at 2 and 4 km per day results in decrease of retained placenta cases and in a tendency towards reduction of calving difficulties, compared to cows that had only a limited space for free motion.The 4 km daily force motion during the dry period with the unaltered feeding level results in more days open and reduced milk yield during following lactation.
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