Effects of different crop straws on growth performance,nutrient digestibility and economic benefit of beef cattle
To explore the effects of different crop straws on growth performance,nutrient digestibility and economic benefits of beef cattle.Sixty healthy Simmental crossbred meat bulls of similar age and body weight(276.74±18.93)kg were divided into four groups,with one group for every 15.The experiment diet was supplemented with 5%wheat,corn,rice and garlic straw,respectively.The experiment lasted for 135 days,the pre-test period was 15 days,and the experimental diet was 120 days.The results showed that compared with wheat,corn and rice straw groups,the average daily gain of beef cattle in garlic straw group was significantly increased by 6.28%,9.83%and 6.97%,respectively(P＜0.05).The feed/meat ratio of beef cattle in garlic straw group was significantly decreased by 6.00%,8.47%and 6.99%,respectively(P＞0.05).Compared with wheat,corn and rice straw groups,the apparent digestibility of beef crude protein in garlic straw group was significantly increased by 3.94%,6.78%and 5.42%(P＜0.05),respectively.Compared with wheat and corn straw groups,the apparent digestibility of beef crude protein in rice straw group was significantly increased by 9.48%and 9.18%(P＜0.05),respectively.Compared with wheat and corn straw groups,the apparent digestibility of beef crude protein in garlic straw group was significantly increased by 11.29%and 10.99%(P＜0.05),respectively.The dietary prices of all groups were 2.1320,2.1292,2.1321 and 2.1361 yuan/kg,respectively,with no significant difference in feed intake(P＞0.05).The feed costs of each group were 2399.78,2381.30,2410.13 and 2401.83 yuan,respectively.Under the premise of consistent beef cattle prices,the gross profit of each group in this experiment was calculated as 2471.93,2333.26,2461.59 and 2784.19 yuan(P＜0.05),respectively.(Conclusion)Garlic straw can promote the digestion and absorption of dry matter and crude protein in beef cattle to improve their growth performance and increase gross profit.
万方数据
维普
