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Protein supplementation of silage for ewes in late pregnancy 妊娠后期母羊青贮饲料蛋白质补充研究
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200592497
J. Vipond, M. Lewis, G. Povey
{"title":"Protein supplementation of silage for ewes in late pregnancy","authors":"J. Vipond, M. Lewis, G. Povey","doi":"10.1017/s1752756200592497","DOIUrl":"https://doi.org/10.1017/s1752756200592497","url":null,"abstract":"Ewes fed good quality grass silage need low levels (0.4-0.6 kg/d) of concentrate supplement to satisfy energy requirements in late pregnancy. However, the UK Metabolisable Protein (MP) system predicts that using a low level of a typical 180 g/kg crude protein (CP) compound will result in an undersupply of MP and therefore a higher digestible undegradable protein (DUP) content of compounds is required. Although the benefits of supplying additional DUP to lactating ewes are well established there is little or no experimental evidence to support the practice of supplementing silage based diets with supplementary DUP. The objective of the experiment was to evaluate the response to supplementary DUP in silage based diets.One hundred and twenty five scanned Scotch Mule ewes were synchronised, mated to Texel rams and allocated to 5 treatments balanced for liveweight, condition score, litter size, and parity. Five supplements were formulated to supply varying amounts of DUP and eRDP.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115345627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inter-laboratory variation in feedstuff evaluation of two contrasting maize silage samples 两种对照玉米青贮样品饲料评价的实验室间差异
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200594241
D. Beever, S. B. Cammell, S. Edmonds
{"title":"Inter-laboratory variation in feedstuff evaluation of two contrasting maize silage samples","authors":"D. Beever, S. B. Cammell, S. Edmonds","doi":"10.1017/s1752756200594241","DOIUrl":"https://doi.org/10.1017/s1752756200594241","url":null,"abstract":"The importance of feedstuff evaluation as part of ration formulation is recognised by UK farmers, with the number of silage samples analysed increasing annually. These can be undertaken by the UK advisory services or feed companies, with several commercial laboratories offering similar services. However, as discussed by Beever [1993], there is concern over the authenticity of some estimates of feeding value, in relation to the analytical techniques used, the lack of agreed standardised procedures, and the apparent variation in results which exists between laboratories. This study examined the extent of this variation when 2 maize silage samples were independently analysed by 9 different laboratories, and compared laboratory based estimates of metabolisable energy [ME] contents with those derived by feeding the same diets to lactating cows.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114850668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Dietary restrictions and growth, efficiency and carcass characteristics of Suffolk ewe Iambs 饲粮限制对萨福克母羊生长、效率和胴体特性的影响
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s175275620059365x
R. M. Lewis, Gerry C. Emmans, G. Simm
{"title":"Dietary restrictions and growth, efficiency and carcass characteristics of Suffolk ewe Iambs","authors":"R. M. Lewis, Gerry C. Emmans, G. Simm","doi":"10.1017/s175275620059365x","DOIUrl":"https://doi.org/10.1017/s175275620059365x","url":null,"abstract":"Lamb consumption has fallen steadily over the past 40 years, partly due to the consumer's belief that it is an over-fat meat. In general, there are two approaches to solving this problem of excess fat. Firstly, to identify and breed from sheep that are genetically leaner. Secondly, to modify the feeding strategy to produce a leaner product. If an interaction between the genotype - either breeds or lines within breeds - and diet exists, establishing methods for linking selection and feeding programmes becomes a priority. In the first year of a programme investigating genotype by dietary interactions in sheep, the effect of non-limiting and limiting foods on growth rate, feed efficiency and body composition in ewe lambs from a line of Suffolk sheep was evaluated indoors.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124063479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of quality and level of protein on the performance of dairy cattle of differing genetic merits 蛋白质品质和水平对不同遗传优势奶牛生产性能的影响
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200592825
I. Carrick, D. C. Patterson, F. Gordon, C. Mayne
{"title":"The effect of quality and level of protein on the performance of dairy cattle of differing genetic merits","authors":"I. Carrick, D. C. Patterson, F. Gordon, C. Mayne","doi":"10.1017/s1752756200592825","DOIUrl":"https://doi.org/10.1017/s1752756200592825","url":null,"abstract":"Providing adequate protein nutrition for high yielding dairy cows is essential if their milk production potential is to be achieved. However, oversupply of protein has detrimental effects on biological efficiency as well as having a negative impact on the environment due to greater excretion of nitrogen in animal wastes. The present experiment was conducted to investigate the response to protein concentration and degradability in the diet by dairy cows of differing genetic merit (GM).","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124144317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of monensin on in vitro semi-continuous rumen fermentation in the rumen simulation technique (Rusitec) 瘤胃模拟技术中莫能菌素对体外半连续瘤胃发酵的影响
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200594058
E. Mackintosh, R. Phipps, J. Sutton, J. Wilkinson
{"title":"Effect of monensin on in vitro semi-continuous rumen fermentation in the rumen simulation technique (Rusitec)","authors":"E. Mackintosh, R. Phipps, J. Sutton, J. Wilkinson","doi":"10.1017/s1752756200594058","DOIUrl":"https://doi.org/10.1017/s1752756200594058","url":null,"abstract":"Rusitec (Czerkawski and Breckenndge, 1977) lias been widely used to study factors which affect rumen fermentation such as monensin, monensin-propionate, abierixin, calcimycin and Aspergillus oryzae (Bogaert et al., 1990; Newbold et al., 1993). Monensin is a grain-positive ionophore which modifies rumen fermentation. The objective of the current study was to determine the effect of monensin on molar proportions of volatile fatty acid (VFA) produced from diets which varied in foragexoncentrate ratio.Four Rusitec vessels (800 ml) were used in an extended Latin Square design with 2 blocks, 2 treatments and 3 periods, each lasting 14 days. To initiate each period, inocula was recovered from the same lactating Holstein-Friesian cow (∽650 kg). All vessels received 15 g DM/day of a complete diet which contained maize silage, grass silage, NaOH treated wheat grain and a protein supplement in three foragexoncentrate ratios; 25:75 (L), 50:50 (M) and 75:25 (H).","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121594359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The potential for improving soya-bean meal in diets for weaned piglets by protease treatment: comparison with other protein sources 蛋白酶处理改善断奶仔猪日粮中豆粕含量的潜力:与其他蛋白质来源的比较
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200593326
J. Rooke, H. Fraser, M. Shanks, A. Morgan
{"title":"The potential for improving soya-bean meal in diets for weaned piglets by protease treatment: comparison with other protein sources","authors":"J. Rooke, H. Fraser, M. Shanks, A. Morgan","doi":"10.1017/s1752756200593326","DOIUrl":"https://doi.org/10.1017/s1752756200593326","url":null,"abstract":"Vegetable proteins, including soya-bean meal (SBM), can only be included in diets for newly-weaned piglets in restricted amounts as they can induce a transient local gut hypersensitivity. This hypersensitivity may be a causative factor in post-weaning diarrhoea. The object of the current experiment was to assess whether protease treatment of SBM could reduce in vitro antigenicity of SBM and improve its nutritional value when fed to newly weaned piglets.Soya-bean meal was treated for 3 h at 50°C at 800 g water / kg. Treatment was carried out at pH 4.5 without and with lg protease P2 (Finnfeeds International Ltd) / kg soya-bean meal dry matter (DM). Treated SBM was neutralised and dried at 65°C before inclusion into diets. The diets were formulated to contain 14.5 MJ Digestible Energy (DE), 190 g crude protein (CP) and 12 g total lysine / kg.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128887151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The effect of different dietary energy substrates on performance and behaviour of outdoor sows 不同日粮能量基质对户外母猪生产性能和行为的影响
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200593879
S. Edwards, I. Riddoch, L. Buckner
{"title":"The effect of different dietary energy substrates on performance and behaviour of outdoor sows","authors":"S. Edwards, I. Riddoch, L. Buckner","doi":"10.1017/s1752756200593879","DOIUrl":"https://doi.org/10.1017/s1752756200593879","url":null,"abstract":"Outdoor sows are subject to a variable climatic environment and to competition within the group for food. High fibre diets, with greater bulk and heat increment, might be beneficial in pregnancy whilst the converse properties might favour high oil diets during lactation.A 2x2 factorial design compared 2 pregnancy diets, cereal based [C] (122 g/kg NDF, 38 g/kg AEE, 13.0 MJ/kg DE, 157 g/kg CP) or high fibre [F] (222 g/kg NDF, 11.5 MJ/kg DE, 138 g/kg CP), and 2 lactation diets, diet C (as in pregnancy) or high oil [O] (72 g/kg AEE, 14.5 MJ/kg DE, 174 g/kg CP). 231 reproductive cycles of Camborough 12 sows were studied over an 18 month period. Pregnancy diets were fed to paddocks of 8-13 sows at a treatment level providing the same daily intake of DE and protein, adjusted to maintain body condition as appropriate to the time of year.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128937580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A modelling investigation of the supplementation of sugarcane with leucaena for milk production by Holstein x Zebu cattle 荷斯坦牛和泽布牛在甘蔗中添加青合欢对产奶量的模拟研究
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200592904
J. Dijkstra, J. France, A. Bannink, A. G. Assis
{"title":"A modelling investigation of the supplementation of sugarcane with leucaena for milk production by Holstein x Zebu cattle","authors":"J. Dijkstra, J. France, A. Bannink, A. G. Assis","doi":"10.1017/s1752756200592904","DOIUrl":"https://doi.org/10.1017/s1752756200592904","url":null,"abstract":"In a number of tropical countries, sugarcane is a readily available forage for dairy cattle. However, milk production with unsupplemented sugarcane is generally low, and animal performance can improve when supplements are added to the diet (Preston and Leng, 1980). Leguminous trees and bushes potentially provide a cheap supplementary source of nutrients. A simple mechanistic model of digestion of sugarcane in cattle has been constructed to assist in the search for suitable supplements (Dijkstra et al., 1996). The aim of the present paper is to investigate the optimum supplementation levels of Leucaena leucophala for milk production on sugarcane based diets, using this model.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129529147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The role of methionine and cystine in the growth and viability of secondary hair follicles of the Cashmere goat in vitro 蛋氨酸和胱氨酸对离体绒山羊次生毛囊生长和活力的影响
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200593703
M. Souri, H. Galbraith, J. Scaife
{"title":"The role of methionine and cystine in the growth and viability of secondary hair follicles of the Cashmere goat in vitro","authors":"M. Souri, H. Galbraith, J. Scaife","doi":"10.1017/s1752756200593703","DOIUrl":"https://doi.org/10.1017/s1752756200593703","url":null,"abstract":"A supply of sulphur-containing amino acids is essential for the growth of hair fibre in animals.The main sulphur-containing amino acid quantitatively required for the synthesis of fibre protein is cystine or its monomeric form cysteine,which may be absorbed from the digestive tract or converted from methionine via the transulphuration pathway.The predominant sites of the transulphuration pathway in ruminants are the liver (Radcliffe and Egan,1978)and the heterogenous system in the skin (Downes et al,1964).The aims of the study were to determine the importance of the supply of cystine and methionine for the growth and viability of the cashmere secondary hair follicle in vitro and to investigate whether cystine could successfully be replaced by methionine in this homogenous system.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129462107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Effect of supplementation in Belgian Blue bulls finished at grass : animal performance, carcass and meat characteristics 饲粮添加对育草比利时蓝公牛的影响:动物生产性能、胴体和肉品质的影响
Proceedings of the British Society of Animal Science Pub Date : 1996-03-01 DOI: 10.1017/s1752756200593181
L. Istasse, A. Clinquart, I. Dufrasne, J. Hornick, C. Van Eenaeme
{"title":"Effect of supplementation in Belgian Blue bulls finished at grass : animal performance, carcass and meat characteristics","authors":"L. Istasse, A. Clinquart, I. Dufrasne, J. Hornick, C. Van Eenaeme","doi":"10.1017/s1752756200593181","DOIUrl":"https://doi.org/10.1017/s1752756200593181","url":null,"abstract":"In Belgium, beef meat is traditionally produced with growing fattening bulls kept indoors and fed concentrate. Alternatives exist to this technic. Dufirasne et al. (1995) showed that young bulls may spend one season on pasture before a finishing period indoors. It has been reported recently that the finishing of young Belgian Blue bulls at grass did not provide carcasses with the required qualities (Hornick at al., 1995). The supplementation at grass has been suggested as an alternative. The aim of the present experiment was to study the effects of supplementation of bulls finished at grass on animal performance, carcass and meat characteristics.","PeriodicalId":396702,"journal":{"name":"Proceedings of the British Society of Animal Science","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129026392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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