养鸡场防止饲料浪费的方法

防止饲料浪费是养鸡生产中极其重要的管理工作.饲料费用占养鸡成本的65%～70%,饲料浪费是造成某些养鸡中饲料效率不高和赔钱的主要原因.     

鸡饲料浪费原因及对策

饲料费用是养鸡生产中的一笔大开支,约占养鸡总成本的70%.因此,减少饲料浪费,是降低养鸡成本、提高养鸡经济效益的主要措施之一.在一般情况下,鸡场浪费的饲料量约占全年需用量的5%～10%,如能采取有效的措施,减少或杜绝饲料浪费,一年的收益是十分可观的.从目前鸡饲料浪费形式来看,一般分为直接浪费与间接浪费两种情况.     

养鸡生产中饲料的浪费

在现代养鸡生产中,饲料、雏鸡、管理、防疫、水电等的费用被视为养鸡成本的五大要素.在这五大要素中,饲料支出占养鸡成本总支出的60%～70%.因此,在平时的饲养管理中应给予充分的重视,在市场低迷时减少饲料浪费以降低饲养成本更为重要.在养鸡业中,饲料浪费主要有以下两种:     

如何有效减少养鸡饲料浪费

饲料费用占整个养鸡成本的70%以上.在实际养鸡生产中,由于饲养管理不严格,饲料配制不科学,饲料使用不合理,常造成4%～10%的饲料浪费,有的高达30%～40%.因此,从多方面、多途径人手减少饲料浪费,成为提高养鸡效益的重要措施.     

谈谈养鸡场饲料浪费的原因及节省饲料的方法

在养鸡生产中,饲料费用占总成本的60～70%,减少饲料浪费是降低生产成本的主要措施之一,因而必须重视减少饲料浪费.饲料浪费主要分为两种,即直接浪费和因饲料转化率低所造成的间接浪费.本文就以上两个方面谈一下饲料浪费的原因及节省饲料的方法.     

鸡饲料浪费的原因及对策

饲料费用是养鸡生产中一笔大开支,约占养鸡总成本的70%。因此,减少饲料浪费,是降低养鸡成本,提高养鸡经济效益的主要措施之一。在一般情况下,鸡场浪费的饮料量约占全年需用量的5%～10%,如能采取有效的得力措施,减少或杜绝饲料浪费,一年的收益是十分可观的。从目前状鸡饲料浪费形式来看,一般分为直接浪费与间接浪费两种情况。     

注意养鸡生产率饲料的浪费

饲料费用是养鸡生产中的一笔大开支,约占养鸡总成本的70%.因此,减少饲料浪费,是降低养鸡成本、提高养鸡经济效益的主要措施之一.     

农村养鸡要节约必须抓捞4要点

农村养鸡,由于设备简陋,饲料占养鸡费用的80%以上.因为饲养管理不科学和其他原因,饲料浪费达20%之多,浪费3%的饲料就会增加2%的成本.饲料浪费对养鸡经济效益的巨大影响,往往没有引起人们的高度重视.如何采取有效措施,减少饲料浪费,降低饲养成本,提高经济效益,已成为养鸡生产的重要课题.     

如何提高养鸡的效益

1.向良种要经济效益优良品种,能提高效益10%～15%。2.向优质饲料和防止饲料浪费要效益饲料占养鸡成本65%～70%,选用安全、能使鸡快大、防病的饲料是提高养鸡效益的关键因素之一。另据调查,目前养鸡的饲料浪费很大:料槽、食桶不合理浪费6%;放料太满浪费7%;鼠耗2%;疫病死亡损失8%;流失2%;养鸡不喂粗砂,消化不良浪费10%;共浪费35%。如平均养大一只石岐杂鸡耗     

笼养鸡饲料浪费原因分析及对策

养鸡成本中饲料成本占60%～70%,而养鸡场饲料浪费量一般为饲料量的2%～10%,具体有以下几种情况:     

中国饲料工业协会第五届理事会顾问、会长、常务副会长、副会长、秘书长、副秘书长、常务理事、理事名单

顾问刘中一张德邻宋瑞祥聂振邦张子仪戎易王维四会长白美清国务院原副秘书长、第四届理事会会长常务副会长(8人,以姓氏笔划为序)刘永好新希望集团董事长、第四届理事会副会长刘汉元通威股份有限公司董事长、第四届理事会副会长陈丹广东恒兴集团股份有限公司董事长、第四届理事会副会长张延喜农业部原副部长、第四届理事会副会长吴明夏湖南正虹科技发展股份有限公司董事长、第四届理事会副会长陶一山唐人神集团股份有限公司董事长、第四届理事会副会长温鹏程广东温氏食品集团有限公司董事长、第四届理事会副会长谭竹洲原化学工业部副部长、第…     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum.     

浅谈对症用药

对症用药就是通过对患病信鸽的症状进行诊断,进而确定病属,选择药物及如何用药的方法。     

军犬鉴别中的嗅源培养和易出现的问题及对策

嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.……     

The influence of the width of the saddle tree on the forces and the pressure distribution under the saddle

As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks.     

Observations on the Pathology of the Spleen of the Cat

Abstract— Lesions were found in the spleen of four of sixty-three cats examined post mortem in the department, and comprised two examples of lymphosarcoma, one of chronic fibrinous peritonitis and one of subcapsular haematoma. Abnormalities were found in two cat spleens received from veterinary surgeons in general practice. In one cat the abnormalities were an haemangiosarcoma with secondary deposits in the liver and in the other extensive mast cell infiltration. In addition lesions were detected in the spleen of three of eighty-seven cats examined post mortem in general practice. The lesions were: multiple secondary deposits of adenocarcinoma from a primary tumour of the mammary gland, a ruptured spleen and a foreign body below the splenic capsule. Résumé— L'examen microscopique de soixante-trois chats pratiqué dans le service a permis de rencontrer quatre fois des lésions de la rate, dont deux lymphosarcomes, une péritonite capsulaire fibrineuse et un hématome sous-capsulaire. D'autre part des lésions ont été trouvées dans deux rates de chat expédiées par des vétérinaires exerçant en pratiaue générale. Chez un chat il s'agissait d'un htmangiosarcome avec métastases hépatiques et chex l'autre d'une infilt ation diffuse par des mastocyta. De plus, on a rencontré des llésions dnas la rate de trois chats parmi quatre-vingt sept autopsies effectuées dans le cadre d'une clientèle génárale. Ces iésions étaient dés métastases multiples d'un adénocarcinome dont la tumeur primitive siègeait dam la glande mammaire, une rupture de la rate et un corps érangers sou capsulaire. Zusammenfassung— Läsionen der Milz wurden bei vier von dreiuiidsechzig in dieser hbteilung sezierten Katzen gefunden, und zwar in zwei Fällen ein Lymphosarkom, in einem Falle eine chron-ische fibrinöse Peritonitis und in einem ein subkapsuläres Hématom. Anomalien fanden sich auch in der Milz von zwei Katzen, die aus der tierxrztlichen Praxis eingesandt wurden. Bei der einen Katze war dies ein Hämangiosarkom mit Metastasen in der Leber, bei der anderen eine weitläufige Infiltration der Mastzellen. Außerdem wurden bei drei von siebenundachtzig in der Praxis sezierten Katzen Milzläsionen gefunden. Diese bestanden am multiplen Metastasen eines Adenokarzinoms der Brustdrüse, einer Milzzerreissung und einem Fremdkörper unterhalb der Milzkapsel.