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    The effect of apple cider vinegar and mushroom stalk supplementation on laying hens
    (Agricultural Research Communication Centre, 2018) Karaalp M.; Aksakal V.; Sarikaya S.B.O.; Urusan H.; Bayram B.; Zulkadir A.
    The aim of this trial was to study the effects of consuming water with apple cider vinegar (ACV) and feed including mushroom (Agaricus bisporus) stalk (MS) on performance and certain egg characteristics. The hens were separated into four treatment groups (with 4 replicates and 6 hens per replicate). The experimental groups were control (not consumed ACV and MS), ACV (3 ml/l drinking water), MS (20 g/kg feed) and ACV+MS (combination). At the end of the experiment, among the performance criteria tested, body weight, feed intake, egg production and weight of eggs, and feed efficiency were not affected by the treatments (P>0.05). Treatments had no effect on physical external and internal egg characteristics. The amount of yolk malondialdehyde of the ACV and MS groups was lower than the control group (P<0.05) in stored eggs (28 d) (P<0.05). © 2018, Agricultural Research Communication Centre. All rights reserved.
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    The effects of dystocia and stillbirth on subsequent lactation performance in holstein dairy cows
    (Ataturk Universitesi, 2016) Bayram B.; Topal M.; Aksakal V.
    In this study, we aimed to evaluate the effects of difficult birth and stillbirth on following lactation performance in Holstein cows. For this purpose, were used the birth and milk production data of 591 births of 326 Holstein cows in 2005-2006 in a cattle farm in Kelkit, Gümüşhane. In study, in addition to the effects of difficult birth and stillbirth, the effects of other parameters such as calving year, calving season, birth sequence and birth type on 305 days milk performance and the number of milking days were also investigated. Difficult birth and stillbirth rate were 8.7% and 9.1% in Holstein cows, respectively. 305 days milk performance (608.6 kg) and the number milking days (23.1 days) of cows with difficult birth were significantly lower than those of cows with normal birth. 305 days milk performance and the number milking days of cows with stillbirth were 925.7 kg and 26.5 days, respectively, less than those of cows giving live birth (P<0.01). In conclusion, difficult birth and stillbirth, which are significant causes of economic losses including primarily milk and calf losses, constitutes some threat to animal welfare. These effects can be minimized with an effective herd management.