ผลของการให้อาหารผสมครบส่วนแบบจำกัดต่อสมรรถภาพการเจริญเติบโต และกรดไขมันระเหยง่ายในกระเพาะรูเมนของแพะลูกผสม เพศผู้ตอน

Sanalak Sapsiri; Thaintip Kraiprom; Katekanok Boonrod; Umaporn Pastsart

Authors

Sanalak Sapsiri Faculty of Science and Technology, Prince of Songkla University, Pattani campus, Muang, Pattani 94000, Thailand., Nakhon Si Thammarat Animal Nutrition Research and Development Center, Ronphibun, Nakhon Si Thammarat 80130, Thailand.
Thaintip Kraiprom Faculty of Science and Technology, Prince of Songkla University, Pattani campus, Muang, Pattani 94000, Thailand.
Katekanok Boonrod Faculty of Science and Technology, Prince of Songkla University, Pattani campus, Muang, Pattani 94000, Thailand., Nakhon Si Thammarat Animal Nutrition Research and Development Center, Ronphibun, Nakhon Si Thammarat 80130, Thailand.
Umaporn Pastsart Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani campus, Muang, Surat Thani 84000, Thailand.

Keywords:

crossbred goat, restricted feeding total mixed ration, growth performance, volatile fatty acids

Abstract

This research aimed to study the effects of restricted feeding of a total mixed ration on growth performance and volatile fatty acids in the rumen of crossbred castrated male goats. Fifteen crossbred goats, aged 4 months with an average weight of 21.57 ± 0.55 kg, were divided into three groups: Group 1 fed ad libitum AL, Group 2 fed at 70% of AL and Group 3 fed at 40% of AL. Under a Completely Randomized Design (CRD) trial for a period of 90 days, it was found that feed intake (1,462.70 g/h/ d), body weight gain (9.55 kg), and average daily gain (0.11 kg/h/d) of goats fed ad libitum AL were significantly higher than those of goats fed 70% AL (1,012.00 g/h/d, 7.08 kg, and 0.08 kg/h/d, respectively) and 40% AL (589.90 g/h/d, 1.68 kg, and 0.02 kg/h/d, respectively). However, the feed conversion ratio of goats fed ad libitum (AL) was not significantly different from those fed 70% AL (13.87 and 12.87, respectively). In addition, there was no significant difference in the pH of the rumen fluid. Total volatile fatty acids, acetic acid, propionic acid, butyric acid and the C2:C3 ratio were at suitable levels for rumen fermentation.

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