BEHİÇ COŞKUN, FATMA İNAL, EMEL GÜRBÜZ, ESAD SAMİ POLAT, MUSTAFA SELÇUK ALATAŞ

The effects of additional glycerol in different feed form on dairy cows

Bu çalışma, gliserinin süt ineklerine toz veya pelet formdaki yemler içinde verilmesinin süt verimi, sütün kompozisyonu, canlı ağırlık ve vücut kondisyon skorundaki değişimler ile kan plazmasında glikoz, NEFA ve BHBA konsantrasyonları üzerine etkisini incelemek amacıyla yapılmıştır. Araştırmada laktasyonun ortalarında bulunan süt inekleri (n = 94), kontrol (n = 40), toz yem + gliserol (n = 27), pelet yem + gliserol (n = 27) olmak üzere üç gruba ayrılmıştır. Gliserol konsantre yemlere %5 oranında ilave edilmiştir. Araştırma 69 gün sürdürülmüştür. Gruplar arasında süt verimi, canlı ağırlıklar ve plazma glikoz, NEFA ve BHBA konsantrasyonları açısından önemli bir farklılık gözlenmemiştir. Çalışmanın son günü, peletlenmiş gliserinli yem tüketen grupta sütte yağsız kuru madde oranı daha yüksek, süt üre-N’u içeriği daha düşük bulunmuştur (P

Süt ineklerinde farklı yem formları ile gliserol ilavesinin etkileri

This research was conducted to determine the impact of diet supplementation with glycerol in form of mash or pelleted feed on milk yield, milk composition, live weight and changes in body condition scoring and the effect of on blood plasma glucose, nonesterified fatty acids (NEFA) and β-hydroxybutyrate (BHBA) concentrations of dairy cows. In middle lactation stage, Holstein dairy cows (n = 94) were divided into three main groups: (1) control (n = 40); (2) mash concentrated feed+ glycerol group (n = 27); and (3) pelleted concentrated feed + glycerol (n = 27). Glycerol is added into concentrated feed at the rate of 5%. The study was lasted 69 d. There was not a significant difference among groups in terms of milk yield, body weight and plasma glucose, NEFA and BHBA concentrations. In the last day of study, milk solid non fat (SNF) were higher and milk urea-N content were lower in pelleted feed+ glycerol group (P<0.05).

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