Performance of growing lambs fed processed karanj (Pongamia glabra) oil seed cake as partial protein supplement to soybean meal     

N. M. Soren  V. R. B Sastry  S. K. Saha  U. D. Wankhade  M. H. Lade  A. Kumar 《Journal of animal physiology and animal nutrition》2009,93(2):237-244

The aim of this study was to determine whether processed karanj (Pongamia glabra) oil seed cake can be used as a supplement to partially replace soybean meal (SBM). Male lambs (n = 24) of uniform body weight (12.88 ± 0.15 kg) were equally allotted at random to a SBM‐based control (CON) and three test concentrate mixtures, containing detoxified solvent extracted karanj cake (SKC) using three processing methods: water washing (WW), 2.5% lime (LM) and 0.4% binder (BN) treatment. The processed SKC replaced 50% nitrogen of SBM of CON. The respective concentrate mixtures were fed along with ad libitum chaffed oat (Avena sativa) straw for 196 days. Dry matter intake was significantly (p < 0.01) lower on WW, LM and BN. Apparent digestibility coefficient of nutrients was comparable, except for total carbohydrates, which was significantly (p < 0.01) lower in LM and BN. Total gain, average daily gain and feed: gain ratio was comparable (p > 0.05) between the CON and WW diets but significantly lower in LM and BN groups. Yield of greasy wool was lower (p < 0.05) in BN group. Comparable dry matter and nutrient (crude protein and total digestible nutrients) conversion efficiency was observed on CON and WW diet but the lambs on the LM and BN diets exhibited lower (p < 0.01) conversion efficiency. It is concluded that SKC after water washing could replace 50% of SBM nitrogen in protein supplementation.  相似文献   

暖季放牧条件下对羔羊采食量、消化及体增重的研究     

贾帅兵  程发祥  闫学慧  托娜  张浩  余雄 《中国畜牧兽医》2009,36(7):33-36

试验于2008年5月15日—9月28日选用55只4月龄哈萨克公羔羊在新疆伊犁哈萨克自治州昭苏马场特克斯河北岸天然草场放牧,进行体重及体尺测定,其中20只羊进行消化试验。结果表明,整个试验期,放牧羔羊的生长发育随牧草和季节变化呈现出波动性,出现2个生长高峰(5月龄和7月龄)。体重总体呈上升趋势。7、8月龄间羔羊平均体重有显著差异（P<0.05）,其余各月龄间差异极显著（P<0.01）。试验期各月龄羔羊平均日增重依次为（187.8±55.7） g、（100.1±44.7） g、（174.6±45.2） g和（82.1±36.0） g。放牧羔羊各项体尺指标相对增长幅度5月龄高于6月龄、7月龄高于8月龄;放牧羔羊体尺累积增长幅度从大到小排列为胸围、体长、体高、胸深、胸宽、管围。放牧羔羊DM、OM、CP消化率5月龄均极显著高于4月龄（P<0.01）。DM消化率5~7月龄在下降,5、7月龄间差异极显著（P<0.01）;OM消化率6月龄和7月龄基本持平,8月龄时达到最大值,但5~8月龄羔羊各月龄间差异不显著;CP消化率5~8月龄在持续下降,7、8月龄间差异不显著,其余各月龄间差异极显著（P<0.01）。  相似文献   

暖季放牧条件下羔羊15种血清生化指标与体重变化关系的研究   总被引：3，自引：2，他引：1  

程发祥  贾帅兵  张浩  托娜  闫学慧  邵伟  余雄 《中国畜牧兽医》2009,36(7):56-59

选取体重（24.71 kg±2.07 kg）相近的4月龄哈萨克土种公羔羊20只,在伊犁昭苏马场特克斯河北岸天然草场进行了放牧,研究暖季放牧条件下羔羊血清生化指标与体重变化的关系。结果表明,4～8月龄羔羊月平均日增重依次为（175±34） g、（92±36） g、（158±46） g、（81±36） g,4～5月龄和6～7月龄平均日增重显著高于5～6月龄和7～8月龄（P＜0.05）。血清生化指标中碱性磷酸酶（ALP）、乳酸脱氢酶（LDH）、谷草转氨酶（GOT）各月龄含量差异不显著（P＞0.05）;5、7月龄总蛋白（TP）含量高于4、8月龄,并显著高于6月龄（P＜0.05）;4、5月龄白蛋白（ALB）含量显著高于6、7、8月龄（P＜0.05）;5、7月龄球蛋白（GLB）含量分别高于4、6、8月龄,7月龄显著高于6月龄（P＜0.05）;4、6月龄白/球（A/G）高于5、8月龄,显著高于7月龄（P＜0.05）;尿素氮（BUN）含量4、5、7、8月龄间差异不显著（P＞0.05）,但显著高于6月龄（P＜0.05）;5、7月龄GLU含量显著高于6、8月龄（P＜0.05）;总胆固醇（TC）、谷丙转氨酶（GPT）、低密度脂蛋白胆固醇（LDL- C）、高密度脂蛋白胆固醇（HDL-C）含量在4～8月龄逐渐升高（HDL-C5月龄略有下降）,TC、GPT含量相邻月龄间差异不显著（P＞0.05）,LDL-C、HDL- C含量7、8月龄显著高于4、5、6月龄（P＜0.05）;甘油三酯（TG）含量在整个试验期总体呈下降趋势,相邻月龄间仅7月龄含量显著高于8月龄（P＜0.05）;游离脂肪酸（FFA）含量8月龄显著高于其余各月龄（P＜0.05）,6月龄高于4月龄,并显著高于5、7月龄（P＜0.01）。  相似文献   

Effects of age on the electroencephalographic response to castration in lambs anaesthetized with halothane in oxygen from birth to 6 weeks old     

Craig B Johnson BVSc  PhD  DVA  Diplomate ECVA    Shauna P Sylvester BSc  MSc    Kevin J Stafford MVB  MSc  PhD    Sheryl L Mitchinson BSc    R Neil Ward  & David J Mellor† BSc  PhD  HonAssocRCVS 《Veterinary anaesthesia and analgesia》2009,36(3):273-279

ObjectivesTo characterize changes in the cerebro‐cortical response of lambs to rubber‐ring castration during the first 6 weeks of postnatal life.AnimalsCoopworth‐Texel cross ram lambs between 3 hours and 44 days of age.MethodsThe electroencephalogram (EEG) and heart rate responses to rubber ring castration were compared. Anaesthesia was induced via a face mask and maintained with halothane in oxygen (e′_Hal = 1.2%). Once a stable plane of anaesthesia had been achieved, data collection of EEG and electrocardiogram (ECG) commenced, and the lambs were castrated 15 minutes later, using rubber rings. Heart rate was derived from the ECG and the median frequency (F₅₀), spectral edge frequency (F₉₅) and total power (p_tot) were derived from the EEG.ResultsCastration‐induced changes in F₅₀ increased from 2 ± 1.8% in the youngest lambs to a maximum of 33 ± 8.9% in the 36 ± 0.5 day‐old lambs. Changes in F₉₅ increased from ?7 ± 3% in the youngest lambs to a maximum of 16 ± 11% in the 36 ± 0.5 day‐old lambs. Linear regression analysis in lambs up to 10 days of age demonstrated a change in the response with age that was significantly different from zero for F₅₀ (r² = 0.28, p = 0.007) and F₉₅ (r² = 0.38, p = 0.001), but not for p_tot or heart rate.ConclusionThis study identified significant changes in the responsiveness of the lambs’ cerebral cortex to the noxious stimulation of castration over the first 7–10 days of postnatal life. The results suggest that mechanisms that suppress responses of the fetus to noxious stimulation may still be active in the first few days after birth.Clinical relevanceThis study documents changes in central nociceptive processing which may reflect the ability of neonatal animals to perceive pain.  相似文献   

Causes of lamb morbidity and mortality in the Ethiopian highlands     

T. Bekele  O. B. Kasali  T. Woldeab 《Veterinary research communications》1992,16(6):415-424

A study was conducted to investigate causes of lamb morbidity and mortality on farms and on-station at Debre Berhan during 1989 and 1990. It showed pneumonia (bacterial and/or verminous), starvation-mismothering exposure (SME) complex, gastrointestinal parasites, enteritis, abomasal impaction and physical injuries to be important health constraints on productivity. Neonatal mortalities were 51.5% and 46.3% on farms and on-station respectively and occurred owing to management problems such as SME, abomasal impaction and physical injuries. On the farms the lamb birth weight was 2.56±0.25 kg and was significantly (p<0.05) affected by the dam's age, lambing weight, litter size, sex of lamb and year of lambing, but not by the season of lambing. Birth weight significantly (p<0.05) influenced lamb mortality. Lambs with a low birth weight tended to die from SME. Morbidities and mortalities due to infectious causes increased in older lambs, suggesting that infections were acquired with age when resistance was lowered owing to inadequate nutrition and poor management.Heavy loss of lambs could be overcome by such health management interventions as foster mothering, warming lambs during the cold season and vaccination with polyvalent vaccines against pasteurellosis, clostridial infection andDictyocaulus filaria.  相似文献   

Preference for inorganic sources of magnesium and phosphorus in sheep as a function of need     

Mariana Pedernera  Alessandro Mereu  Juan J Villalba 《Journal of animal science》2021,99(1)

We determined whether sheep discriminate among different mineral supplements containing P and Mg and if they modify their selection as a function of the basal diet received. Forty lambs were offered four-way choices among inorganic sources of P and Mg: magnesium oxide in its coarse 1) C-MgO and granular 2) MgO forms and magnesium phosphate: 3) Mag33 (33% Mg and 2.7% P), and 4) MGP (25% Mg and 15% P), and two-way choices between MGP and each of the other minerals, and between MgO and C-MgO (baseline). Subsequently, lambs were randomly assigned to four groups (10 lambs/group) and fed rations such that the levels of Mg and P were low (LMg_LP), adequate (NMg_NP), low in Mg and adequate in P (LMg_NP), or adequate in Mg and low in P (NMg_LP). After 29 d, choice tests (post-deficiency) were repeated. During baseline, lambs ate and preferred Mag33 > C-MgO = MGP > MgO (P < 0.05). This pattern remained during post-deficiency tests, but lambs in LMg_LP and LMg_NP increased their preference for MGP and C-MgO, respectively, whereas lambs in NMg_LP increased their preference for C-MgO and MGP relative to baseline (P < 0.05). The serum concentrations of P and Mg increased after preference tests, and preference for MgO and MGP in low-Mg groups increased as the serum concentration of Mg declined (P < 0.05). Thus, lambs discriminated among different minerals and some groups modified their preferences based on the basal diets received, which rectified mineral imbalances.  相似文献   

The Effect of Different Bloodless Castrators and Different Tail Docking Methods on the Responses of Lambs to the Combined Burdizzo Rubber Ring Method of Castration     

J.E Kent  V Molony  M.J Graham 《Veterinary journal (London, England : 1997)》2001,162(3):250-254

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生长抑素基因工程苗和半胱胺对放牧羔羊增重效果的影响   总被引：14，自引：2，他引：12  

王子荣  陈伟华  陈杰 《畜牧与兽医》2001,33(1):3-5

选择 4～ 5月龄体重相近的杂种羔羊 90只 ,随机分成对照、添加半胱胺 (CS87)和生长抑素 (SS)苗免疫共 3组 ,每组公母各半。CS87按每千克体重 80mg每周添加 1次 ,持续 6周 ;SS苗按 1mL/只一次性免疫 ,9周结束。结果显示 ,添加CS87组 0～ 2 1d增重提高 1 6 46 % (P <0 0 5) ,2 1～ 42d增重提高 1 5 95 % (P <0 0 5) ;SS苗免疫组在 2 1～ 42d提高 5 86 % (P >0 0 5) ,42～ 63d提高 1 7 5 % (P <0 0 5) ,母羊效果优于公羊。  相似文献   

丁酸钠对断奶羔羊胃肠道发育的影响     

左丽君  陈想  王可鑫  姜宁  张爱忠 《动物营养学报》2020,(4):1916-1926

本试验旨在研究丁酸钠对断奶羔羊胃肠道发育的影响。选取24只42日龄的断奶羔羊,随机分成4组,每组6个重复。空白对照组饲喂基础饲粮,抗生素组饲喂在基础饲粮中添加250 mg/kg黄霉素的饲粮,丁酸钠A组和丁酸钠B组分别饲喂在基础饲粮中添加2和3 g/kg包膜丁酸钠的饲粮。各组分别在试验第14天、第28天选取3只羔羊屠宰取样。结果表明:试验第14天时,各组断奶羔羊的瘤胃相对质量和相对容积以及各胃肠道形态指标均无显著差异(P>0.05);试验第28天时,与空白对照组相比,丁酸钠B组瘤胃背囊的肌层厚度,瘤胃腹囊的肌层厚度、乳头高度,十二指肠、空肠和回肠绒毛高度,空肠绒毛表面积以及空肠和回肠绒毛高度/隐窝深度显著增加(P<0.05)。由此可见,在饲粮中添加3 g/kg包膜丁酸钠并持续饲喂28 d可以促进断奶羔羊瘤胃乳头和肌层以及肠道绒毛的生长,增加肠道绒毛高度与隐窝深度的比值,有利于胃肠道的发育。  相似文献   

湖羊及考力代公羔生殖系统发育与精子发生的研究   总被引：2，自引：0，他引：2  

岳根华  张泉福 《南京农业大学学报》1993,16(3):69-73

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