期刊
TROPICAL ANIMAL HEALTH AND PRODUCTION
卷 40, 期 2, 页码 117-124出版社
SPRINGER
DOI: 10.1007/s11250-007-9070-9
关键词
Brown Swiss; forage quality; Panicum; sweet potato; varieites; White Fulani
Three sweet potato varieties (TIS-87/0087; TIS-8164; TIS-2532.OP.1.13) and Green panic (Panicum maximum) were evaluated for forage quality in a completely randomized design (CRD) using 12 sole-fed lactating White Fulani cows for 21 days, and 12 growing White Fulani and White Fulani x Brown Swiss calves for 77 days. Dry matter intake of cows ranged (p < 0.05) between 131 g/W-kg(0.734) in TIS-87/0087 and 152 g/W-kg(0.734) in TIS-8164. Daily milk yields increased (p < 0.05) in TIS-87/0087 (2%) and TIS-8164 (5%), but decreased in TIS-2532.OP.1.13 (5%) and Green panic (19%). Mean (+/- SEM) milk total solids (13.16 +/- 0.05 g/100 g), ash (0.78 +/- 0.01 g/100 g), protein (3.79 +/- 0.07 g/100 g), fat (3.98 +/- 0.06 g/100 g), and lactose (4.62 +/- 0.14 g/100 g) were significantly different (p < 0.05) among treatments. The White Fulani x Brown Swiss calves recorded about 10, 25 and 29% higher birthweight, milk intake and bodyweight gains respectively, but about 3% lower dry matter intake than the purebred White Fulani calves. The rumen degradation rates were similar (p > 0.05), while the rest rumen dry matter degradation characteristics were lowest (p < 0.05) for Green panic. Sweet potato forage could be used as sole feed or supplement for dry-season Green panic.
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