A vitamin e response in a young dog

Extract

This subject will be covered in three sections, first, a brief history of how the idea of using trained dogs to help the blind was conceived, then the present-day methods of training guide dogs, and, finally, how the blind person is trained with their guide dog to work together as a team.     

Protein and lipid sources affect cholesterol concentrations of juvenile Pacific white shrimp, Litopenaeus vannamei (Boone)

Two experiments were conducted to evaluate the effects of protein and lipid sources on cholesterol, AA, and fatty acid content, and on biological performance of juvenile Pacific white shrimp, Litopenaeus vannamei (Boone). In Exp. 1, seven isonitrogenous and isocaloric diets were prepared using fish meal; soybean meal; casein; fish meal + soybean meal; fish meal + casein; soybean meal + casein; and fish meal + soybean meal + casein. In Exp. 2, seven isonitrogenous and isocaloric diets were prepared using fish oil; soy oil; poultry fat; fish oil + soy oil; fish oil + poultry fat; soy oil + poultry fat; and fish oil + soy oil + poultry fat. Nine shrimp (average BW 570 mg) were stocked per 60-L tank, with three tanks per diet in each experiment. Shrimp were fed to apparent satiation twice daily for 28 d. Protein sources affected shrimp cholesterol, feed consumption, feed efficiency, protein consumption, protein efficiency ratio, and crude body fat (P < or = 0.05), but not weight gain, survival, hepatosomatic index, body protein, ash, and AA composition. Body (without hepatopancreas) cholesterol concentrations were the highest in shrimp fed the diet containing fish meal (0.81%), lowest for those fed the casein diet (0.64%), and intermediate in the other dietary treatment groups (range 0.71 to 0.74%). Lipid source also affected shrimp body cholesterol, body fatty acid profiles, and fatty acid profiles in the hepatopancreas (P < or = 0.05), but not growth performance, body protein, fat, ash, and cholesterol concentrations in the hepatopancreas. Shrimp fed the fish oil diet had the highest body cholesterol (0.75%), whereas those fed the soy oil or poultry fat diets were lowest (0.66 and 0.65%, respectively). Results indicate that by replacing fish meal and fish oil with soybean meal and soy oil, shrimp growth performance is not affected, but body cholesterol concentration is reduced.     

阿维菌素驱除兔蛲虫试验报告

朝阳市近年养兔业得到了很大发展,兔寄生虫病对养兔业的危害已引起人们重视。在朝阳市兔体寄生虫调查中发现,兔蛲虫对兔的感染率很高,从外贸冷冻加工厂、康宁医院兔场、朝阳县一粮库兔场、龙城区西大营子集市、双塔区凌北集市购入的233只兔剖检所得,兔蛲虫感染率为81.1%(189/233),感染强度为50(2~1 220条),感染兔均有不同程度的肠炎变化,严重感染者毛焦、消瘦,生长缓慢,易继发其它疾病,严重影响养兔的经济效益,对养兔业发展造成威胁。为寻求一种较好的驱治兔蛲虫的药物,2005年9~10月作者利用康宁医院兔场和航发兔场饲养的兔及从市郊各集市购…     

Identification of polymorphisms and association analysis with meat quality traits in the porcine KIAA1717 and HUMMLC2B genes

Skeletal muscle genes are potential candidates for production and meat quality. Screening a subtracted cDNA library constructed with mRNA obtained from longissimus dorsi muscles of F1 hybrids Landrace × Yorkshire and their female parents Yorkshire, we isolated two partial sequences coding for the H3-K4-specific methyltransferase (KIAA1717) and skeletal muscle myosin regulatory light chain (HUMMLC2B) genes. Database search revealed KIAA1717 and HUMMLC2B encoded proteins with SET domain and EF-hand calcium binding motif, respectively. In the present work we identified their partial polymorphisms and two SNPs, one (C1354T) at the 3′ untranslated region (UTR) of KIAA1717 and one (A345G) at the SINE (PRE-1) element of HUMMLC2B, both created/disrupted a restriction site for endonuclease Msp I. The selected pigs were genotyped at the KIAA1717 C1354T and HUMMLC2B A345G sites by means of a PCR-RFLP protocol. Significant associations were observed for the KIAA1717 C1354T polymorphic site with meat marbling (longissimus doris (p < 0.05), biceps femoris (p < 0.01)) and intramuscular fat (p < 0.01). HUMMLC2B A345G were significantly associated with meat pH (longissimus doris (p < 0.05), biceps femoris (p < 0.01)), drip loss (p < 0.01), water holding capacity (p < 0.01) and meat color value (longissimus doris (p < 0.01), biceps femoris (p < 0.05)). Further studies are needed to confirm these preliminary results.     

对畜牧业旅游功能开发的思考——以西安秦岭野生动物园为例

发达的畜牧业是现代农业的重要标志,也是推进社会主义新农村建设的重要内容。如何发挥畜牧业的新功能,实现畜牧业的持续健康发展是当代农业的一个发展方向。文章从畜牧业的功能入手,分析了人们对畜牧业旅游功能认识的瓶颈,并以西安秦岭野生动物园为例,对西安畜牧业旅游功能的开发进行探讨。     

蝗虫痘病毒对黄胫小车蝗生长发育和产卵力的影响

试验观察结果表明,蝗虫痘病毒除对黄胫小车蝗有显著致死作用外,使感病寄主在接种13～33d后,食量比对照减少28.73%～70.40 %导致生长发育缓慢,接种后13～18d,对照组生长率为36.3mg/d,而处理组则分别为14.9、14.5和9.6mg/d,仅为对照的1/4～1/2。寄主羽化极不整齐,对照组整个历期只有5d,而处理组则为16～46d,随着接种剂量的加大,这种“拖延”趋势越发明显。寄主产卵量明显降低,甚至根本不能产卵。处理组寄主“畸形”和“自相残杀”的情况也较对照组严重。     

Genotype x environmental interaction for mature size and rate of maturing for Angus,Brahman, and reciprocal-cross cows grazing bermudagrass or endophyte infected fescue

Mature weight and rate of maturing were estimated in 177 Angus, Brahman, and reciprocal-cross cows grazing bermudagrass or endophyte-infected tall fescue over a 4-yr period to evaluate genotype x environment interactions. Data were collected every 28 d until cows were approximately 18 mo of age and then at prebreeding, postcalving, and weaning of calf. All cows with weight data to at least 42 mo of age were included in the analysis. Mature weight and rate of maturing were estimated using the three-parameter growth curve model described by Brody (1945). Data were pooled over year and analyzed by the general linear model procedure of SAS. Included in the models for mature weight and rate of maturing were the independent variables of genotype, environment, and genotype x environment interaction. There was a genotype x environment interaction (P < 0.01) for mature body weight (BW) but not for rate of maturing. Angus cows grazing fescue pastures had greater (P < 0.01) mean mature BW than Angus x Brahman cows grazing bermudagrass (611 +/- 17 vs 546 +/- 16 kg). Angus x Brahman cows grazing bermudagrass had lower (P < 0.05) mean mature BW than Brahman x Angus cows grazing bermudagrass or endophyte-infected fescue and Brahman cows grazing bermudagrass (546 +/- 16 vs 624 +/- 19, 614 +/- 22 and 598 +/- 20 kg, respectively). Brahman cows grazing endophyte-infected fescue had smaller (P < 0.05) mean mature BW than all genotype x forage combinations except for Angus x Brahman cows grazing bermudagrass. Angus cows had a smaller (P < 0.05) mean rate of maturing than Angus x Brahman and Brahman x Angus cows (0.039 +/- 0.002 vs 0.054 +/- 0.002 and 0.049 +/- 0.002%/mo, respectively), respectively, and Angus x Brahman cows had a larger (P < 0.05) mean rate of maturing than Brahman x Angus and Brahman cows (0.054 +/- 0.002 vs 0.049 +/- 0.002 and 0.041 +/- 0.002 %/mo, respectively). There was a direct breed x forage interaction (P < 0.05) for mature BW. These data suggest that the choice of breed type is important in maintaining a crossbreeding program, in that mature BW and rate of maturing are critical to the matching of animal requirements to available production resources.     

浅论饲料企业质量管理体系长效机制的构筑

1饲料企业构筑质量管理体系长效机制的必要性1.1进一步全面宣贯ISO9000族标准的需要ISO9000族标准是系列标准,其结构互为补充。企业通过了质量管理体系的认证,仅仅证实企业具有提供"满足顾客要求"和"适用法律法规要求"产品的基本能力。从管理角度来看,这种质量管理体系尚不够完整,从提升企业总体业绩与