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1.
Forty-one, 10-week-old newly weaned goats were randomly allocated into two groups, namely control (n=22) and treated (n=19). Kids in both groups were fed Rhodegrass hay ad libitum that contained < 0.1 mg/kg DM cobalt and 150 g/day of a commercially prepared ruminant concentrate that contained approximately 0.12 mg/kg DM cobalt. This diet provided the minimum daily requirement of cobalt as specified for sheep. The treated goats were supplemented with bi-monthly subcutaneous injections of 2000 microg of hydroxycobalamin. All goats were weighed and blood samples collected monthly for haematological, clinical biochemical and serum vitamin B12 analysis. After a 10-month experimental period the goats were slaughtered. The control animals exhibited significantly (P<0.05) lower weight gains, and had dry scruffy hair coats. In addition, there was a decline in erythrocyte counts, mean haemoglobin, packed cell volume, mean corpuscular volume, mean corpuscular haemoglobin and mean corpuscular haemoglobin concentration. Controls also exhibited significantly (P<0.05) lower levels of total serum proteins and elevated levels of serum alkaline phosphatase compared to treated goats. Fourteen (63.6%) of the control goats developed pathology consistent with reported field cases of hepatic lipidosis associated with low liver levels of cobalt. Only one (5.3%) of the treated goats developed hepatic lipidosis. Contrary to previous reports that suggested that goats are less sensitive to low levels of dietary cobalt than sheep, it is apparent that this is not the case with Omani goats. This is the first report of the induction of hepatic lipidosis in goats due to feeding low levels of cobalt in their diet.  相似文献   

2.
Caprine aflatoxicosis: experimental disease and clinical pathologic changes   总被引：3，自引：0，他引：3  
Groups of 8 male crossbreed domestic goats were given 3 dosage levels of aflatoxin B1 [(AFB1) mg/kg of body weight/day] orally: 0.1 for 34 days; 0.2 for 18 days; or 0.4 for 10 days. Clinical condition, feed consumption, and selected blood values were determined. Clinical signs of toxicosis included decreased feed consumption, slight-to-moderate loss of body weight, mucopurulent nasal discharge, dyspnea, coughing, lethargy, icterus, diarrhea (4 goats), and subnormal body temperature 24 to 48 hours before death. Clinicopathologic changes included increases in total RBC count, PCV, hemoglobin concentration, serum bilirubin concentration, and serum activities of aspartate aminotransferase, isocitric dehydrogenase, and ornithine carbamyl transferase. Goats given the 2 smaller dosage levels of AFB1 had slight increases of serum total protein (TP) concentration compared with control goats, but goats given the larger dosage levels of AFB1 initially had a slight decrease in TP. Aflatoxin had little effect on total WBC count. Serum alanine aminotransferase (ALT) activities in goats given the 2 larger dosage levels of AFB1 were similar to those of control goats, but goats given the smallest dosage level of AFB1 had increased serum ALT activities. Aflatoxin did not produce consistent dose-related changes in serum alkaline phosphatase activities. Seemingly, goats are susceptible to aflatoxin. Onset of clinical signs was dose-related. Onset and magnitude of increases in PCV, hemoglobin concentration, serum bilirubin concentration, and activities of serum aspartate aminotransferase, ornithine carbamyl transferase, and isocitric dehydrogenase were dose-related. Changes in TP and activities of serum ALT and alkaline phosphatase were neither dose-related nor were they potentially useful indicators of toxicosis.  相似文献   

3.
Groups of six goats were orally dosed with sporidesmin at rates of 0.3, 0.6, 1.2 and 2.4 mg of sporidesmin per kg body weight and their responses up to 6 weeks later compared with those of sheep dosed at the same time. Clinical facial eczema and pathological lesions similar to those found in sheep were found in all the goat breeds, but at higher dose rates of sporidesmin than those which caused equivalent lesions in sheep. Saanens were the most susceptible goat breed, requiring 2-4 times as much sporidesmin as sheep to achieve similar effects. G4 and feral goats required 4-8 times the sheep dose of sporidesmin to obtain similar responses. Gamma-glutamyltransferase reached its highest serum levels after 20 days while glutamate dehydrogenase and aspartate aminotransferase reached their highest levels between 10 and 20 days. Alkaline phosphatase did not rise consistently to high levels in affected goats. The elevation in aspartate aminotransferase levels tended to be early and transient; glutamate dehydrogenase early and prolonged; gamma-glutamyltransferase late and prolonged, and'alkaline phosphatase late and minor. There was considerable individual variation in the time at which elevations occurred and the levels which enzymes reached. Cholesterol and bilirubin levels were high if liver injury was severe.  相似文献   

4.
Serum enzymes were studied in 163 apparently healthy goats from three indigenous goat breeds of Ethiopia. The effect of breed, age, sex and season on alanine aminotransferase (ALT) / glutamic pyruvic transaminase (GPT), aspartate aminotransferase (AST) / glutamic oxalacetic transaminases (GOT), alkaline phosphatase (ALP) and acid phosphatase (AcP) levels was assessed. The mean serum enzymes levels of the indigenous Arsi-Bale, Central Highland and Long-eared Somali goat breeds ranged from 14.0–20.2 iu L−1 for ALT/GPT, from 43.2–49.3 iu L−1 for AST/GOT, from 83.7–98.8 iu L−1 for ALP, and from 2.99–4.23 iu L−1 for AcP, were within the normal range for goats elsewhere. Breed had significant influence on AST/GOT values. Sex had significant effect on ALT/GPT for Arsi-Bale goats with higher values in males than females. Age was significant on all serum enzymes studied in the Arsi-Bale goats and on ALP in the Central Highland goats. Season had significant influence on all serum enzymes except for ALT/GPT in the Arsi-Bale goats. The serum enzyme levels of these indigenous goat breeds can be used as normal reference values for Ethiopian goat breeds adapted to similar agro-ecology and production system.  相似文献   

5.
OBJECTIVE: To determine hepatic effects of halothane and isoflurane anesthesia in young healthy goats. DESIGN: Randomized prospective clinical trial. ANIMALS: 24 healthy 9-month-old female goats. PROCEDURE: Goats were sedated with xylazine hydrochloride and ketamine hydrochloride and anesthetized with halothane (n = 12) or isoflurane (12) while undergoing tendon surgery. End-tidal halothane and isoflurane concentrations were maintained at 0.9 and 1.2 times the minimal alveolar concentrations, respectively, and ventilation was controlled. Venous blood samples were collected approximately 15 minutes after xylazine was administered and 24 and 48 hours after anesthesia, and serum aspartate aminotransferase (AST), sorbitol dehydrogenase (SDH), alkaline phosphatase (ALP), and gamma-glutamyltransferase (GGT) activities and bilirubin concentration were measured. Goats were euthanatized 25 or 62 days after anesthesia, and postmortem liver specimens were submitted for histologic examination. RESULTS: All goats recovered from anesthesia and survived until euthanasia. Serum SDH, GGT, and ALP activities and bilirubin concentration did not increase after anesthesia, but serum AST activity was significantly increased. However, serum hepatic enzyme activities were within reference limits at all times in all except 1 goat in which serum AST activity was high 24 and 48 hours after anesthesia. This goat had been anesthetized with halothane and had the longest duration of anesthesia. No clinically important abnormalities were seen on histologic examination of liver specimens. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that use of halothane or isoflurane for anesthesia in young healthy goats is unlikely to cause hepatic injury.  相似文献   

6.
Twenty-four coccidia-free goats were reared artificially in indoor cages and allocated to 6 groups of 4 animals each. At 20 days of age, goats in groups 1–3 received 104,105 and 106 sporulated oocysts of Eimeria ninakohlyakimovae per goat, respectively, each as a single dose. Goats in group 4 received daily doses increasing over a 3-week period, starting with 100/day for the first week, followed by 1000, and 10 000/day in weeks 2, 3, respectively. Goats in group 5 received 104 oocysts following a challenge dose of 106 oocysts on day 32. Goats in group 6 were kept as uninoculated controls. Infected animals showed diarrhoea and weight loss. Goats in group 4 showed longer periods of diarrhoea and patency than other infected goats. Goats in group 5 showed the same severe clinical signs as those in group 3 but produced very low oocyst output after a challenge dose. The diarrhoea was associated with a reduction in alkaline phosphatase activity and increases in packed cell volume and haemoglobin. No significant differences were found in serum aspartate aminotransferase, alanine aminotransferase, total protein, albumin, globulin, Na+, K+,Cl− between groups during 48 days after inoculation. There were no serum enzyme indications of damage to the liver. Histological examination performed 100 days after inoculation revealed that inoculated goats had mild subacute to chronic proliferative enteritis in the lower small intestine and the large intestine, and the mesenteric lymph nodes, gallbladders and livers also showed slight histological lesions. The results showed that E. ninakohlyakimovae was highly pathogenic.  相似文献   

7.
Blood and faecal samples were studied from 200 Omani goats of both sexes and various age groups, within five different regions in Oman. Survey questionnaires were undertaken on each goat. The serum vitamin B12 values ranged from 105 to >2000 pg/ml, with a mean value of 723.1 pg/ml and a 95% confidence interval of 61-1507 pg/ml. Kids in the age group 1-3 months showed significantly lower levels of serum vitamin B12 than the older animals. Varying levels of serum vitamin B12 were found in different regions of Oman and on farms within the same region. Goats maintained on commercial feed showed higher levels of serum vitamin B12 than those maintained on pasture or fed on household leftover food, as commonly practised in Oman. Coccidial counts were highest in animals with lower levels of serum vitamin B12. The results of this study indicate that there is a wide range of serum vitamin B12 levels in Omani goats and suggests that younger animals, with lower levels of serum vitamin B12, might be more susceptible to vitamin B12 deficiencies than older animals.  相似文献   

8.
CASE DESCRIPTION: A closed herd of 400 mixed-breed dairy goats was examined because of a decrease in milk production and increase in mortality rate. Nine animals had died within a 1-month period. CLINICAL FINDINGS: Clinical signs were evident only in lactating goats and included anorexia and recumbency. In the most severely affected goats, signs progressed to neurologic abnormalities and death. Serum aspartate aminotransferase activity, gamma-glutamyltransferase activity, and total bilirubin concentration were high in clinically affected does, but no evidence of hemolysis was found. A diagnosis of copper toxicosis was made on the basis of high liver and kidney copper concentrations and histologic evidence of hepatic necrosis. Goats were found to have been fed a mineral mix containing 3,050 ppm copper for 9 months prior to the onset of copper toxicosis. Overall, there was no consistent relationship between serum hepatic enzyme activities, serum copper concentration, and liver copper concentration. TREATMENT AND OUTCOME: Clinically affected goats were treated with penicillamine, ammonium molybdate, sodium thiosulfate, and vitamin E. Penicillamine increased urine copper excretion in treated does versus untreated control animals. An increased incidence of infectious disease was identified in the herd 9 months later. Liver vitamin E concentration was low in 10 of the 12 goats that underwent necropsy. CLINICAL RELEVANCE: Findings suggested that penicillamine may be an effective treatment for goats with copper toxicosis. Production losses months after the diagnosis was made suggested that the intoxication had a prolonged animal welfare and economic impacts.  相似文献   

9.
The metabolism of proteins in the blood serum in Boer and Saanen goats was investigated during puerperium. Twenty Boer goats (10 primiparous and 10 pluriparous) and 10 Saanen goats (five primiparous and five pluriparous) between 2 and 5 years of age were used in this research. Blood for analysis was taken every fourth day from day 3 until day 40 post-partum. Blood samples were collected by jugular puncture. In the obtained blood serum, the concentration of total proteins (PT) and albumin (ALB), and the activity of enzymes aspartate aminotransferase (AST) [the Enzyme Commission number (EC number) 2. 6. 1. 1.], gamma-glutamyltransferase (GGT) (EC 2. 3. 2. 2.), creatine kinase (CK) (EC 2. 7. 3. 2.) and alkaline phosphatase (AP) (EC 3. 1. 3. 1.) were determined by spectrophotometry. These parameters were in physiological ranges in Boer goats and in Saanen goats, without significant differences according to number of kids per doe. According to the research results of the blood serum in goats during puerperium, there were no significant differences in the concentration of ALB. Boer goats had significant higher (p < 0.05) concentration of PT and enzyme activity of AP, CK and GGT. Saanen goats had only enzyme activity of AST significantly higher (p < 0.05). Enzyme activity of alkaline phosphatase was significant higher (p < 0.05) in pluriparous goats in both breeds than in primiparous. The obtained results may represent a contribution to a better understanding of protein metabolism during puerperium in dairy and meat goats and for diagnostic purposes.  相似文献   

10.
本研究旨在探讨不同粗蛋白质水平全混合颗粒日粮对育肥期马头山羊的生长性能及血液生化指标的影响。选用3～4月龄马头山羊羯羔36只,随机分为4组,分别饲喂粗蛋白质水平为16.15%(对照组)、14.54%(试验1组)、12.92%(试验2组)和11.31%(试验3组)的全混合颗粒日粮,进行育肥试验。预试期18 d,正试期42 d。结果表明:试验3组马头山羊的平均日增重(0.17 kg/d)高于试验2组(P<0.05),对照组、试验1组和试验2组平均日增重差异不显著;试验3组马头山羊的血清尿素氮高于其他各组(P<0.05),谷草转氨酶/谷丙转氨酶低于其他各试验组(P<0.05),谷丙转氨酶低于对照组和试验1组(P<0.05)。在本试验条件下,马头山羊育肥期全混合颗粒日粮中适宜的粗蛋白质水平为11.31%,不同粗蛋白质水平全混合颗粒日粮对马头山羊血液生化指标均没有不良影响。  相似文献   

11.
为了研究不同精粗比全混合日粮对山羊肉品质、血清指标和器官发育的影响,将体重相近、健康的4月龄努比亚黑山羊36只随机分为3组,每组12只羊。试验组山羊分别饲喂低精粗比(40∶60,L)、中精粗比(50∶50,M)和高精粗比(60∶40,H)全混合日粮,试验为期70 d。结果表明:1)不同精粗比日粮对整个试验期山羊的体尺指标无显著影响(P>0.05)。2)正试期第14天,H组山羊血清谷草转氨酶(aspartate aminotransferase,AST)、谷丙转氨酶(alanine aminotransferase,ALT)和肌酸激酶(creatine kinase,CK)活性显著低于L组(P<0.05);正试期第56天,H组山羊血清AST/ALT值显著高于L组(P<0.05),但碱性磷酸酶(alkaline phosphatase,ALP)活性则相反。3)H组山羊肌肉失水率显著低于其他两组(P<0.05),但肌肉pH则相反;M组肌肉红度显著低于其他两组(P<0.05),各组间其他项目无显著性差异(P>0.05)。4)L组山羊的瘤胃重量、肝脏重量和肝脏指数显著高于H组(P<0.05),而肺指数则相反;M组山羊网胃重量、网胃指数、瓣胃重量、瓣胃指数和皱胃指数著高于L组(P<0.05),而脾脏重量和脾脏指数则相反。5)L组山羊十二指肠绒毛高度、VH/CD和空肠VH/CD显著高于H组(P<0.05),而空肠的隐窝深度则相反;M组山羊回肠绒毛高度和VH/CD显著高于H组(P<0.05)。综上所述,低精粗比日粮能够促进努比亚山羊胃肠道发育,高精粗比日粮能够提高山羊肉品质。从本试验结果来看,采用低精粗比(40∶60)日粮对努比亚山羊进行育肥较好。  相似文献   

12.
Changes in physiological and behavioral responses of goats to road transportation have been demonstrated, but effects of lairage and grazing on transported goats and the role of ascorbic acid (AA) on the effects have not been elucidated. The aims of the experiment were to investigate physiological, behavioral, lairage and grazing responses of goats transported by road and administered with AA. Experimental goats (n = 20) were administered with AA, whereas control goats (n = 20) were given sterile water before transportation by road for 12 hours. The goats were either grazed or held in lairage after the transportation. Excitability scores, grazing time, liveweight, and activities of serum enzymes were evaluated in goats that were grazed and those kept in lairage. The results obtained post-transportation showed that 12 hours of road transportation and lairage was stressful to the goats, and it decreased (P < 0.05) their excitability scores, grazing time, and liveweight. The activities of alanine aminotransferase, aspartate aminotransferase, and creatine phosphate kinase rose after the transportation, especially in the control goats, kept in lairage. Overall, the results showed that extensively raised goats, transported for 12 hours during the hot-dry season, require a lairage period of 7-11 days for their metabolism, behavior, and liveweights to return to baseline values. Goats that were allowed to graze after transportation required 3 days to return to baseline values, but those administered with AA before transportation and grazed after transportation required only 2 days to recover. The results demonstrated that keeping goats in the lairage after transportation was not beneficial. In conclusion, AA administration ameliorated stress because of transportation by road, and post-transportation grazing facilitated the recovery of the goats from the stress.  相似文献   

13.
Anatolia has been an important region for civilizations and agricultural revolution as a major domestication centre for livestock species. Goats (Capra hircus) were among the earliest domesticated animals in this region. In this study, genetic diversity of Anatolian goat breeds was characterized by comparison of mitochondrial DNA hypervariable region 1. A total of 295 individuals, including 99 Anatolian Black goats, 96 Angora goats and 100 Kilis goats, were used. Haplogroup A was found to be the dominant haplogroup in all three breeds. The highest haplogroup diversity, including haplogroups A, B2, C and G, was observed in the Anatolian Black breed. Haplogroup D was only observed in Kilis and Angora goats. Haplogroup G was found in Angora and Anatolian Black breeds. The Anatolian goat breeds had high genetic diversity values and a weak phylogeographical structure. The nucleotide diversity values were found to be higher than those in previously studied goat breeds. The fact that Anatolia is a domestication centre and its geographical position as a junction of trade routes may have caused the higher genetic diversity of Anatolian goat breeds.  相似文献   

14.
Decoquinate was evaluated as a coccidiostat in domestic goats. Fifty goats less than 4 months of age were assigned to 5 groups (pens) of 10 goats each and were treated for 87 days with 0 (control), 0.3, 0.5, 1.0, or 4.0 mg of decoquinate in feed/kg of body weight. Goats were inoculated orally weight. Goats were inoculated orally with 30,000 oocysts, mainly Eimeria christenseni (74%) and E ninakohlyakimovae (20%) on day 19. Nontreated goats developed profuse watery diarrhea and tenesmus and gained weight poorly; 2 died. Treated goats did not develop clinical coccidiosis and gained significantly more weight (P less than 0.05), regardless of the dose used. Treated goats also had significantly fewer (P less than 0.05) oocysts in feces than did nontreated controls. Oocyst numbers were inversely related to dose; a more rapid decrease in oocyst numbers occurred as the dose was increased. At the doses used, decoquinate was safe in goats and was an effective drug for the prevention of clinical coccidiosis.  相似文献   

15.
OBJECTIVES: To investigate effects of phenobarbitone on serum activities of alanine aminotransferase, alkaline phosphatase and gamma-glutamyl transferase and concentrations of bilirubin, albumin, cholesterol and total protein in dogs. ANIMALS: Ten crossbreed experimental dogs and 10 client-owned dogs of mixed breeds treated chronically with phenobarbitone to control seizures. PROCEDURES: Experimental dogs were allocated to treatment (6 mg/kg oral phenobarbitone, n = 6) and control (no treatment, n = 4) groups in which serum biochemical tests were performed at intervals during a 3-month period. Biochemical tests were performed once on the 10 epileptic dogs. RESULTS: Phenobarbitone caused increased serum alkaline phosphatase activity but did not affect gamma-glutamyl transferase activity or bilirubin, cholesterol, albumin and total protein concentrations. Phenobarbitone had minimal effect on alanine aminotransferase activity. CONCLUSIONS: Individual dogs treated with phenobarbitone may have small increases in serum alanine aminotransferase activity and variable increases in alkaline phosphatase activity but are unlikely to have alterations in gamma-glutamyl transferase activity or bilirubin, cholesterol, albumin or total protein concentrations.  相似文献   

16.
OBJECTIVE: To characterize serum biochemical abnormalities in goats with uroliths. DESIGN: Retrospective case-control series. ANIMALS: 107 male goats with uroliths and 94 male goats with various nonrenal diseases (controls). PROCEDURES: For male goats, results of serum biochemical analyses collected from 1992 through 2003 were retrieved from computerized records, as were signalment, clinical diagnoses, and discharge status. Results of analyses for BUN, creatinine, phosphorus, calcium, Na, K, Cl, total CO2, anion gap, and glucose were compared between goats with uroliths and control goats. RESULTS: Goats with uroliths had higher mean BUN, creatinine, total CO2, K, and glucose concentrations and lower mean phosphorus, Na, and Cl concentrations than control goats, with no difference in mean calcium concentration and anion gap. Goats with uroliths had higher frequency of azotemia, hypophosphatemia, hypochloridemia, and increased total CO2 and lower frequency of decreased total CO2 than control goats. Urolithiasis occurred more frequently in castrated males than in sexually intact males and in dwarf African breeds than in other breeds. CONCLUSIONS AND CLINICAL RELEVANCE: Goats with uroliths often had hypophosphatemia at admission. Hypochloridemic metabolic alkalosis was the most common acid-base disorder. Rupture in the urinary tract system was associated with increased prevalence of hyponatremia and hyperkalemia. Clinicians should be aware of these abnormalities when determining fluid therapy.  相似文献   

17.
To compare the effect of fenbendazole on the liver and liver microsomal mono-oxygenases of goats, quail and rats, an oral dose of 25 mg/kg was administered to the animals daily for 9 consecutive days. On the tenth day, blood samples and livers were collected from both the control and the treated animals for preparation of serum and microsomes respectively. Determination of the activities of sorbitol dehydrogenase (SDH), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in the serum samples showed that there was no significant increase in the activities of these enzymes in the treated animals as compared to their corresponding controls, suggesting no liver damage. Similarly, no significant difference in the amount of microsomal cytochrome P-450 was found between the control and the treated animals of the same species. Compared to their respective controls, the activities of microsomal benzphetamine N-demethylase and aniline hydroxylase were almost unchanged in the treated goats and rats. However, fenbendazole treatment appeared to enhance the activity of these two microsomal enzymes in quail. The results indicate that fenbendazole is not liver toxic to goats, quail or rats at a dose rate of 25 mg/kg.  相似文献   

18.
Toxin produced by Pasteurella multocida type D was investigated for its effect on serum complement and serum biochemistry in rats. Rats were given a sublethal single subcutaneous injection of D toxin equivalent to 0.2 microgram/kg of body weight. Serum obtained 1, 3, 5 and 7 days post-treatment was tested for complement activity, total bilirubin, aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP). Serum complement titers were significantly elevated (P less than 0.05) at all times after injection of toxin compared to rats injected with diluent and tested at the same intervals. Bilirubin was decreased but both control and D toxin-treated rats had low concentrations of bilirubin in their sera. The other biochemical constituents measured had no consistent pattern that would indicate liver damage in the rats.  相似文献   

19.
川渝部分山羊品种(类群)遗传多样性微卫星标记研究   总被引：1，自引：0，他引：1  
为分析川渝山羊品种(类群)的遗传多样性和系统发生关系,利用30个微卫星标记,对6个山羊品种(类群)进行分析。结果表明:金堂黑山羊遗传多样性最丰富,群体多态信息含量、平均杂合度和有效等位基因数分别为0.777、0.819和6.54;大足黑山羊各项指标最低,分别为0.736、0.787和5.57。对6个品种(类群)聚类分析表明,金堂黑山羊与南江黄羊的首先聚类在一起,然后依次与板角山羊、川东白山羊、大足黑山羊和波尔山羊聚类。各山羊品种(类群)的聚类关系与其来源、育成史及地理分布基本一致。  相似文献   

20.
本试验旨在研究饲粮磷水平对育成期崂山奶山羊生长性能、血清生化指标和磷排泄的影响。选择体重为(21.07±0.30)kg的育成期崂山奶山羊公羊30只,采用单因素试验设计,随机分成3组,每组10个重复,每个重复1只羊。各组饲喂能量和蛋白质水平基本一致,磷水平分别为0.25%、0.35%和0.45%的饲粮。试验期105 d,其中预试期15 d,正试期90 d。结果表明:1)饲粮磷水平对育成期崂山奶山羊干物质采食量无显著影响(P0.05)。饲粮磷水平对7、8、9月龄崂山奶山羊体重及平均日增重均无显著影响(P0.05)。2)饲粮磷水平对育成期崂山奶山羊血清钙、磷、尿素氮含量及碱性磷酸酶活性均无显著影响(P0.05)。3)在采食磷、粪磷、尿磷、磷总排泄量、沉积磷方面,0.45%组极显著高于0.25%组和0.35%组(P0.01),0.35%组极显著高于0.25%组(P0.01)。由此可见,饲粮磷水平对育成期崂山奶山羊干物质采食量、体重、血清生化指标均无显著影响,但饲粮磷水平为0.25%时可以显著降低粪磷、尿磷的排泄量,减少环境污染。在本试验条件下,育成期崂山奶山羊公羊饲粮磷水平以0.25%为宜。  相似文献   

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