Effect of programmed feed intake on performance, economic value, and ruminal fermentation of growing lambs

Authors : Kazım ŞAHİN, Talat GÜLER, Nurhan ŞAHİN, I Halil ÇERÇİ

Pages : 32-36

View : 13 | Download : 17

Publication Date : 2000-06-18

Article Type : Research Paper

Abstract :This experiment was conducted to determine the effects of ad libitum and programmed feed intake according to meeting the nutrient requirement of lambs on average daily gain, feed efficiency, profıt margins, and ruminal fermentation of growing lambs. Twenty two lambs approximately 6 mo old averaging 31 kg were used in a randomized design. Lambs were offered ad libitum access to feed Control Group and were limit-fed according to meeting nutrient requirement Treatment Group . At the termination of the study, ruminal fluid was collected 0, 2, and 4 h after feeding foı* 3 d. Feed efficiency improved in the treatment group. However, average daily gain was not different betvveen groups. Programmed feed intake at levels being able to meet the nutrient requirement decreased the cost of 1 kg live weight gain. Ruminal pH and ammonia concentrations were similar for both groups. Concentrations of acetate, propionate, and butyrate were not affected by feeding methods. The results of this investigation indicate that programmed feed intake according to meeting the nutrient requirement of lambs was reduced cost of 1 kg live weight gain
Keywords : Programlı yem tüketimi, Performans, Kâr Ruminal fermantasyon