مورد إلكتروني
Reproductive performance of northern Australia beef herds. 1. Survey of nutritional, breeding and herd health management practices and of the environment
| العنوان: | Reproductive performance of northern Australia beef herds. 1. Survey of nutritional, breeding and herd health management practices and of the environment |
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| بيانات النشر: | 2023 |
| تفاصيل مُضافة: | McCosker, K. D. Jephcott, S. Burns, Brian M. Smith, David R. Fordyce, G. O'Rourke, P. K. McGowan, M. R. |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Data concerning the practices and policies of collaborating properties for nutritional, breeding and health management of herds were captured by survey of herd owners/managers (n = 78) at the commencement of a large observational study conducted across northern Australia to identify and quantify the effect of major animal-, management group- and property-level risk factors on measures of reproductive performance. The cooperating herds in this study were considered to be broadly representative of north Australian beef breeding enterprises in terms of geography, size and ownership. Using four broad regional categories, this paper presents descriptive summaries of the management practices and nutritional conditions of cooperating herds in what was known as the Cash Cow project. Property sizes were largest within the Northern Downs and Northern Forest, and smallest within the Southern Forest. The expected average annual growth of yearling steers was >50 kg less in the Northern Forest, compared with the other country types, which also appeared to be associated with the identified production system and turnoff animal. Despite the exacerbated nutrition and environmental challenges and likely increased time required for new managers within the Northern Forest to attain an in depth understanding of the cattle and property dynamics, this region had the greatest incidence of management changes. The nutritional information summarised in this study highlights that available phosphorus during the wet season, as indicated by faecal levels in proportion to dietary energy, was likely to limit animal production within the Northern Downs and Northern Forest. During the dry season, pasture digestibilty and protein levels were likely to be approaching maintenance for cows on ~50% of properties in each country type and that responses to rumen degradable protein were also likely on 50% of properties. Despite this finding, low use of dry season supplements was observed for the Northern Dow |
| مصطلحات الفهرس: | Genetics, Reproduction, Agriculture and the environment, Breeding and breeds, Cost, yield and profit. Accounting, Cattle, Rangelands. Range management. Grazing, Feeds and feeding. Animal nutrition, Article, PeerReviewed |
| URL: | |
| الإتاحة: | Open access content. Open access content |
| ملاحظة: | application/pdf |
| أرقام أخرى: | BCDLM oai:jdecs1.ecs.soton.ac.uk:7844 McCosker, K. D., Jephcott, S., Burns, B. M., Smith, D. R., Fordyce, G., O'Rourke, P. K. and McGowan, M. R. (2023) Reproductive performance of northern Australia beef herds. 1. Survey of nutritional, breeding and herd health management practices and of the environment. Animal Production Science, 63 (4). pp. 301-310. 1408060034 |
| المصدر المساهم: | DEPARTMENT OF EMPLOYMENT, ECON DEV & I From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1408060034 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |