Post-weaning growth of Thai native x Anglo-Nubian goats fed concentrate supplementation with varied level of energy and protein
การเจริญเติบโตหลังหย่านมของแพะพันธุ์ลูกผสมพื้นเมือง-แองโกลนูเบียนที่ได้รับอาหารข้น
เสริมที่มีระดับพลังงานและโปรตีนต่างกัน
Saowanit Kuprasert, Assoc. Prof., D. of Animal Sci., F. of Natural Resources, PSU.
Surasak Kochapakdee, Asst. Prof., D. of Animal Sci., F. of Natural Resources, PSU.
Apichart Lawpetchara, Research Associate, Small Ruminant Research and Development Centre,
F. of Natural Resources, PSU.
Somkiat Saithanoo, Assoc. Prof., D. of Animal Sci., F. of Natural Resources, PSU.
Surapol Choldumrongkul, Assoc. Prof., D. of Animal Sci., F. of Natural Resources, PSU.
Corresponding e-mail : ksurasak@ratree.psu.ac.th
Grant : Government Budget
Presented : The 1st Southern Animal Science Conference, 17-18 August 2000, Department of
Animal Science, Faculty of Natural Resources, Prince of Songkla University
Key words : goat, post weaning growth, concentrate, protein and energy level,
Anglo-Nubian crossbred
The objective of this research was to study the effects of energy and protein levels in concen-
trate on post-weaning growth of Thai native-Anglo-Nubian crosses. Twenty-four weaners (12 males and 12 females) were used. These goats were fed 50 g/day of hay and fed concentrate ad libitum.
Energy levels in concentrate were 2,700 and 2,900 kcal/kg ME and protein levels in concentrate were 10, 12, 14%. Goats consumed 371-442 g of concentrate daily and male goats consumed more con-centrate than did female ones (442 and 350 g/d, P<.01). Male goats also used 9.5 kg of concentrate to gain 1 kg of body weight whereas female goats consumed 12.5 kg to obtain similar weight gain. Goats gained 35-45 g/d and energy and protein level in concentrate did not significantly affect growth rate of goat. However, growth rate of male goat (47.3 g/d) was significantly greater than of female ones (31.2 g/d).
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