共查询到17条相似文献，搜索用时 218 毫秒
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试验选取体重相近的荷斯坦犊牛24头,分为两组,试验组和对照组各12头。试验组犊牛生后5d饲喂初乳,以后饲喂代乳粉直至60日龄;对照组始终饲喂牛奶至60日龄断奶。结果表明,试验组平均日增重792g,对照组平均日增重695g,试验组比对照组提高13.96%,差异显著(P<0.05)。试验期间试验组体高、胸围分别增长9.37cm、14.60cm;对照组分别增长8.36cm、11.70cm,试验组比对照组分别提高1.01cm、2.90cm,差异不显著(P>0.05)。试验组犊牛每头可以节省88元的直接费用。说明代乳粉代替牛乳可以达到良好的生产效果。 相似文献
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22头体重相近的荷斯坦犊牛随机分为2组,试验组饲喂代乳料,对照组饲喂新鲜牛奶。经60d的饲喂试验发现,试验组增重比对照组多5.3kg/头,且差异极显著(P<0.01),日增重比对照组提高了88.3g/d,差异极显著(P<0.01)。 相似文献
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不同营养水平代乳粉对犊牛生产性能和腹泻率的影响 总被引：1，自引：0，他引：1
本文旨在通过研究不同营养水平代乳粉对犊牛生产性能、腹泻率的影响,筛选出犊牛适宜代乳粉配方。选用荷斯坦犊牛24头,按照体重、出生日期相近原则分为4组,每组6头。对照组以牛奶哺喂;试验组分别用不同能量和不同蛋白质水平的代乳粉哺喂,分为高能量高蛋白组(HEHP)(23.74MJ/kg,27.20%);中能量中蛋白组(MEMP)(21.76MJ/kg,24.80%);低能量低蛋白组(LELP)(19.78MJ/kg,22.40%)。试验表明,对照组、HEHP组、MEMP组、LELP组的全期平均日增重分别为352.68、419.64、357.14和292.41g;HEHP组的平均日增重极显著高于LELP组(P<0.01),显著高于对照组和MEMP组(P<0.05),而MEMP组与对照组无明显差异(P>0.05)。饲喂代乳粉的3个试验组中,HEHP组犊牛腹泻率为0,低于对照组的2.08%、LELP组的4.46%,和MEMP组的1.49%。综上所述,在本试验条件下,高能量高蛋白(消化能23.74MJ/kg,粗蛋白质27.20%)组代乳粉饲喂效果最佳,试验全期犊牛平均每头每日进食的消化能和粗蛋白质分别为19.60MJ、200.08g,可以作为实际生产中犊牛培育的参考。 相似文献
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犊牛代乳应用试验效果观察 总被引：1，自引：0，他引：1
选择20日龄的小犊牛45头,随机分为对照组、试验组A、试验组B,试验组A为15头,试验组B为16头,对照组为14头。采用犊牛代乳粉和犊牛代乳料,与鲜奶做对比试验,连续饲喂70天,结果试验组B日均增重1.057±0.144kg/头,比对照组0.961±0.345kg/头增加0.096kg,提高9.99％,差异显著(P<0.05),试验组A日均增重0.980±0.3849kg/头比对照组0.961±0.345kg/头增加0.019kg,提高1.98％,差异不显著(P>0.05)。 相似文献
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选择出生日期5～8 d,5 d初乳期后的荷斯坦母犊牛20头,按照体重相近的原则随机分为两组,每组10头,记为试验组和对照组,试验组饲喂代乳粉,对照组饲喂全乳,其精料、粗料两组均相同,哺乳期45 d,断奶。1月龄和2月龄两组牛平均日增重,第一个月分别为513 g、611 g;第二个月分别为823 g、812 g。试验组生长发育正常,第二个月试验组比对照组饲料转化率稍有提高,表明代乳粉可用来代替全乳饲养犊牛。 相似文献
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Bhatti SA Ahmed MF Wynn PC McGill D Sarwar M Afzal M Ullah E Khan MA Khan MS Bush R Warriach HM Khan A 《Tropical animal health and production》2012,44(4):819-826
The objective was to study the growth potential of Sahiwal calves given milk or milk replacer with or without concentrates. For this purpose, forty-eight Sahiwal calves were divided into four groups of 12 animals each with equal sex ratio. In each group, the calves were offered either milk or a milk replacer (MR) at a rate of 10% of their body weight adjusted weekly. In addition to this, calves were fed either a starter ration plus Egyptian clover hay (SR + H) or hay only (H) until the end of trial. The milk or MR was withdrawn gradually from day 56 until animals were weaned completely by day 84. Calves offered milk grew faster than those offered MR (357 ± 9 vs. 162 ± 9 g/day; p < 0.05) and displayed higher weaning weights (51.6 ± 0.8 vs. 35.2 ± 0.8 kg; p < 0.05). The calves offered SR + H grew faster (311 ± 9 vs. 208 ± 9 g/day; p < 0.05) and displayed higher weaning weights (48.7 ± 0.8 vs. 38.1 ± 0.8 kg; p < 0.05) than those fed H alone. Calves offered milk plus SR + H showed the highest growth rate and weaning weights (401 ± 13 g/day and 56.3 ± 1 kg, respectively). The lowest growth rate and weaning weights were observed in calves offered MR and H only (115 ± 13 g/day and 30.3 ± 1 kg, respectively). Calves offered the MR had higher number of scour days than those offered milk (13.5 vs. 3.3). The feeding of whole milk in combination with the starter ration and hay resulted in superior growth rates, higher weaning weights, and healthier calves than the other feeding regimens. 相似文献
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Godden SM Fetrow JP Feirtag JM Green LR Wells SJ 《Journal of the American Veterinary Medical Association》2005,226(9):1547-1554
OBJECTIVE: To determine growth, morbidity, and mortality rates in dairy calves fed pasteurized nonsaleable milk versus commercial milk replacer and compare economics of feeding pasteurized nonsaleable milk versus commercial milk replacer in dairy calves. DESIGN: Clinical trial. ANIMALS: 438 dairy calves. PROCEDURE: Calves were assigned at 1 to 2 days of age to be fed pasteurized nonsaleable milk or a commercial milk replacer until weaned. Body weight was measured at the time of study enrollment and at the time of weaning, and any medical treatments administered and deaths that occurred prior to weaning were recorded. A partial budget model was developed to examine the economics of feeding pasteurized nonsaleable milk versus commercial milk replacer. RESULTS: Calves fed conventional milk replacer had significantly lower rates of gain (-0.12 kg/d [-0.26 lb/d]), lower weaning weights (-5.6 kg [-12.3 lb]), higher risk for treatment during the summer and winter months (odds ratio [OR], 3.99), and higher risk of death during the winter months (OR, 29.81) than did calves fed pasteurized nonsaleable milk. The estimated savings of feeding pasteurized nonsaleable milk, compared with milk replacer, was dollars 0.69/calf per day. The estimated number of calves needed to economically justify the nonsaleable milk pasteurization system was 23 calves/d. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that dairy calves fed pasteurized nonsaleable milk have a higher growth rate and lower morbidity and mortality rates than do calves fed conventional milk replacer. Feeding pasteurized nonsaleable milk could be an economically viable strategy for dairy calf producers. 相似文献
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The aim of the experiments was to investigate the effects of the preservation of colostrum and unripe milk with potassium sorbate at a concentration of 0.5% and of its storage for three to five days at normal environmental temperatures on the calf health condition. A set of 30 calves divided into two groups was included in the trial. Calves belonging to the experimental group were fed preserved colostrum and unripe milk from day 9 to day 30 of their life (the first experimental period), and from day 31 to day 50 (the second experimental period) milk replacer. Calves belonging to the control group were fed milk replacer from day 9 to day 50 of their life. One calf from the experimental group died from a respiratory disease. In the control group, one calf died and another had to be slaughtered; in both cases digestive tract diseases were diagnosed. The number of calves which had to be treated medically was also lower in the experimental group--in the calves fed preserved colostrum--one case of periodic tympany was recorded in comparison with four cases in the control group. When haematological and biochemical characteristics were examined, significantly lower haemoglobin levels were found in experimental calves at the end of the first experimental period (105.4 g.l-1 when compared with 112 g.l-1 in the control group) and significantly higher values of proteinaemia were found in the blood plasma of these calves at the same period (59.6 g.l-1 and 53.8 g.l-1, respectively). Similar differences were also found during a single haematological and biochemical examination. 相似文献
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Keiji OKADA Junro KATO Tamako MIYAZAKI Shigeru SATO Jun YASUDA 《Animal Science Journal》2010,81(1):85-88
In order to understand the effects of the automatic milk replacer feeding system on calf health, we examined the effect of frequent milk feeding on curd formation in the abomasum using ultrasonographic imaging. Eight male Holstein calves were divided into a milk-replacer group and a fresh milk group. Calves were fed twice a day to 12 days after birth (Period A). From 13 days, calves were fed six times a day (Period B). The abomasal fluid was taken by paracentesis. In both periods A and B, the fresh milk group formed bigger curds faster than the milk replacer group. The curd score of the milk replacer group in period B at 2 h was significant lower than those of both groups in period A. The pH in the abomasum was lower in period B than in period A. We could not identify the location of the abomasum in the milk replacer group during period B at almost time points. Our experiment suggests the possibility that frequent feeding of milk replacer causes incomplete hydrolysis of κ-casein as well as curd formation, thus reducing the digestibility compared to the feeding of the milk replacer twice per day or frequent feeding of fresh milk. 相似文献
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代乳粉对早期断奶犊牛生长的影响 《畜牧与饲料科学》2016,37(4):27-27
旨在评价饲喂代乳粉对早期断奶犊牛生长及培育成本的影响。选取体重相近的新生犊牛45头,随机分为试验1组、试验2组和对照组;试验1组饲喂A品牌代乳粉,试验2组饲喂B品牌代乳粉,对照组饲喂牛场产鲜牛奶;测定各组实验犊牛的出生体重、1月龄体重和50日龄断奶体重;计算并比较各组犊牛培育成本。结果表明,各组犊牛的出生体重和1日龄体重差异不显著（P〉0.05）;试验1组和试验2组犊牛的50日龄断奶体重分别比对照组增加5.12、2.86 kg,且试验1组与对照组相比差异显著（P〈0.05）;试验1组和试验2组犊牛的平均日增重分别比对照组增加0.14、0.07 kg,且试验1组和对照组相比差异显著（P〈0.05）;试验1组与试验2组平均每头犊牛分别比对照组节约饲养成本198.8、222.0元。综上提示,使用代乳粉能够促进犊牛生长,降低犊牛的培育成本,提高养殖场的经济效益。 相似文献
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Shaukat Ali Bhatti Kamran Nazir Muhammad Jamil Basra Muhammad Sajjad Khan Muhammad Sarwar Muhammad Ashraf Iqbal Mughal 《Tropical animal health and production》2013,45(4):923-930
The objective of present study was to evaluate the growth potential of Sahiwal calves for veal production on whole milk or whole milk and milk replacer combined in a ratio of 50:50 (MMR). For this purpose, 48 Sahiwal calves (both male and female) were assigned to four dietary treatments having 12 animals/treatment. Calves in the treatments A and B were offered whole milk at 15 or 20 % of their body weight (BW), respectively, up to day 84 adjusted on weekly basis. The calves in treatments C and D received the same amount of milk as in treatments A and B until day 21, respectively, after which 50 % of the milk offered was replaced with a blend of chickpea (Cicer arietinum) flour and vegetable (corn) oil mixed in water (MR) until day 84. The constituted MR had 3.1, 2.8, and 14.3 %, CP, EE, and DM, respectively. The growth and intake data were analyzed using repeated measures analysis, with MIXED Procedures of SAS in a 2?×?2 factorial design. The two factors were feeding level and feeding source. Calves offered whole milk grew faster (P?<?0.05) and had greater weaning weights (P?<?0.05) than those offered MMR (606.4?±?18.1 vs 331.3?±?18.1 g/day and 70.4?±?1.5 vs 47.8?±?1.5 kg, respectively). Greatest daily BW gain (656?±?26 g/day) and weaning weight (74.6?±?2.1 kg) were observed in calves given treatment B while the lowest production cost/kg of BW gain (≈US$3.6?±?0.2) was observed in calves given treatment A. The daily BW gain of calves fed milk ad libitum was 716?±?40 and 836?±?40 g/day, during 5–8 and 9–12 weeks, respectively. The number of days calves exhibited scours was higher in calves offered MMR than those offered whole milk. Replacement of 50 % milk with a blend of chickpea flour and vegetable oil, as an alternative to milk replacer, did not support growth equivalent to whole milk and was not effective in reducing feeding cost during the weaning period. Sahiwal calves may have promise for being raised for veal production under tropical environments. 相似文献