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[学术文献] Evaluation of the optimal standardized ileal digestible threonine:lysine ratio in lactating sow diets 进入全文

中国知网

Camborough PIC sows (n = 291) were fed 1 of 5 dietary treatments to evaluate the standardized ileal digestible (SID) Thr:Lys requirement during lactation. Sows were blocked by parity (1, 2, and 3+) and randomly allotted to 1 of 5 SID Thr:Lys ratios (52, 60, 68, 76, and 84). SID Lys was formulated to 1.03% and SID methionine and cystine (M + C):Lys was 55%. Sows were allowed 5.45 kg feed/day starting on the day of farrowing. All other nutrients met or exceeded the NRC (2012) requirements. Sows were allowed ad libitum access to water, and piglets were cross-fostered within treatment within 24 h of birth. Data collected during the study included sow prefarrow BW, sow weaning weight, starting litter weight, weaning litter weight, piglet mortality, weaning-to-estrus interval, and subsequent total born piglets. Data were analyzed as a randomized complete block design using PROC MIXED with sow as the experimental unit and treatment and parity as fixed effects. Requirement estimation models evaluated were quadratic polynomial, broken-line linear, and broken-line quadratic (BLQ) using PROC NLMIXED. Models that differed in their Bayesian information criterion (BIC) values by at least 2 points were considered to have meaningful differences in their data fit. The best-fit model was based on the best BIC value. As the SID Thr:Lys ratio increased, there was a quadratic response on ADFI (4.73, 4.57, 4.67, 4.55, and 4.60 kg/d; P = 0.001) and percent of sow BW loss (−6.4, −7.89, −7.35, −6.19, and −5.81; P = 0.004). In addition, there was a trend for weaning-to-estrus interval to be affected by the ratio (5.4, 4.4, 4.6, 4.5, and 4.8; P = 0.07). Daily litter gain was also quadratically improved as the SID Thr:Lys ratio increased (2.67, 2.67, 2.78, 2.77, and 2.68 kg/d; P-value = 0.001). For daily litter gain, the BLQ model was determined to be the best fit with an estimated SID Thr:Lys requirement of 65%. In conclusion, the optimal SID Thr:Lys ratio for litter growth was 65.

[前沿资讯] Precision feeding may lower pig dietary protein needs, nitrogen excretion 进入全文

Feednavigator 官网

Swine precision feeding systems may need new methionine to lysine ratios, however, the individualized system may allow for swine production with lower protein feeds while supporting gain, researchers say.

[前沿资讯] 中国猪肉进口格局巨变,巴西有望成为最大受益国 进入全文

食品伙伴网

巴西作为全球最大的大豆生产国及主要的玉米生产国,其低廉的饲料原料及较高的养殖水平,使巴西猪肉在全球具有显著的价格优势。随着中国猪价进入“牛市”,全世界养猪的国家都盯上了中国这个巨大的市场。中国是全球第一大生猪生产及消费国,由于今年生猪产能下降,猪肉供应紧缺,猪肉进口量创历史新高已成为板上钉钉的事情。2018年,中国进口冻猪肉119.3万吨。业内预计,2019年进口量将达到200万吨,同比增长67.6%,有望刷新2016年162万吨的进口量。另据海关最新数据,今年7月,全国猪肉进口数量为18.2万吨,较上一个月增长13.56%,较去年同期增长106.69%,即同比多进口9.4万吨猪肉。布瑞克·农产品集购网研究总监林国发称,由于巴西具有充足及低廉的饲料原料,加上养殖水平较高,未来具有极大的机会成为中国最大的猪肉进口来源国。

[前沿资讯] 152亿!东方希望、巨星集团共计500万头生猪项目签署 进入全文

中国饲料行业信息网

关于生猪投资热潮持续进行中,本周两笔投资均达到70亿以上,其中巨星集团76亿,东方希望也拟投相同数额建200万生猪产业项目。总投资76亿元!乐山市引进百万生猪养殖项目。此次乐山市引进了两家产业化龙头企业——四川巨星企业集团有限公司和四川特驱农牧科技集团有限公司投资建设2个《百万生猪养殖项目》。两个项目计划在3到5年时间,总投资76亿元,建成后将实现年出栏生猪300万头。其中,四川巨星企业集团有限公司将在乐山市构建起良种猪繁育、商品猪生产、饲料加工、屠宰加工以及种养产业园区五大体系;四川特驱农牧科技集团有限公司将在乐山地区大力发展美好家庭农场,实现规模化、集约化、标准化、现代化的生猪养殖。8月23日,(黑龙江)齐齐哈尔市梅里斯区200万头生猪养殖加工项目举行4个场区集中开工仪式。该项目由东方希望集团投资兴建。东方希望集团是集农业、重化工业产业链等为一体的特大型民营企业集团,总部位于上海浦东。此次集中开工的生猪养殖加工项目先期计划总投资35亿元,建设生猪养殖场、饲料加工厂和原料种植基地,预计3年全部建成,项目于2017年签约,占地约8000多亩。项目今年计划投资5.6亿元,在岗子村、地房子村建设养殖场区2个,饲养生猪26万头,在新林建设繁育场1个,饲养种猪1万头,在嫩水农场建设饲料加工厂区1个,年加工饲20万吨。后期按照东方希望集团未来发展规划,计划再投资40亿元,建设生猪屠宰加工厂。项目全部建成后,将成为全省较大的现代化生猪养殖加工销售示范基地,带动周边村屯发展饲料种植10万亩以上,预计年产值可达100亿元左右,税收5亿元左右,带动就业1500余人,为齐市经济发展注入新活力,为畜牧产业高质量发展凝聚新希望,拉动黑龙江省西部地区种植、养殖、加工、运输、包装等行业的全产业链发展。

[前沿资讯] First-ever Swine Innovation Summit coming soon 进入全文

FeedStuffs官网

The National Pork Board (NPB) will host the inaugural Swine Innovation Summit in Indianapolis, Ind., on Sept. 17, 2019, as a special event prior to the Forbes AgTech Summit Indianapolis. NPB leaders will attend the Sept. 18-19 Forbes AgTech Summit as part of its ongoing support of agricultural technology innovation and the THRIVE Midwest Challenge. Forbes and SVG Ventures-THRIVE are founding partners of the AgTech Summit and partner with AgriNovus Indiana, Corteva, Elanco Animal Health, Land O’Lakes and Purdue University to provide networking and showcase opportunities in the Midwest. NPB said today’s food production systems are undergoing explosive change, and the animal agriculture industry needs to prepare in order to keep pace. The Swine Innovation Summit will focus on three key drivers of change: emerging technology, new and dynamic business models and consumer behaviors that affect shopping preferences and food choices. “Today’s consumers literally carry supercomputers in their pockets and have access to information – both accurate and misleading – that they leverage in making on-the-spot purchase decisions,” NPB director of emerging technology Andy Brudtkuhl said. “In the span of a few short hours, we intend to educate today’s pig farmers on what they need to know and how they must adapt to the changing world in which we live.”

[学术文献] 腹泻仔猪与健康仔猪粪便菌群多样性的比较 进入全文

中国知网

本试验旨在探究腹泻仔猪与健康仔猪粪便菌群多样性及结构的差异。采集同等饲养条件下的8份腹泻和8份健康哺乳仔猪的粪便样本,利用16S rRNA高通量测序技术对健康仔猪和腹泻仔猪粪便菌群进行比较。结果表明:健康仔猪粪便菌群的多样性高于腹泻仔猪(P<0.05);与健康仔猪粪便菌群组成相比,腹泻仔猪变形菌门(Proteobacteria)的相对丰度增加(P<0.05),而拟杆菌门(Bacteroidetes)降低(P<0.05);在属的分类水平上,腹泻仔猪粪便中埃希氏-志贺菌属(Escherichia-Shigella)和乳杆菌属(Lactobacillus)的相对丰度高于健康仔猪(P<0.05),而拟杆菌属(Bacteroides)、Lachnoclostridium和瘤胃球菌属(Ruminococcus)低于健康仔猪(P<0.05)。综上表明,腹泻仔猪与健康仔猪粪便菌群的多样性和结构存在显著差异,埃希氏-志贺菌属的相对丰度显著增加可能是仔猪腹泻的重要原因之一。

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