Animal Production Science
Volume 64 Number 8 2024
This study, evaluated the effect of melatonin on reproductive performance in sheep via meta-analysis. Pregnancy rate, lambing rate and litter size were used for reproductive performance parameters. Effect sizes of reproductive performance parameters were calculated according to breeds, production characteristics and seasons. The positive effect of melatonin was found greater in the non-reproductive period than in the breeding period for the three reproductive performance traits examined. This comprehensive research examined the effect of melatonin on sheep according to different factors.
This study assessed the environmental impacts of Australian pork, and is the most comprehensive (70–72% industry) of its kind in Australia. Eutrophication potential was generally lower than in international pork production. The rate of environmental improvement was slow compared with historic trends. Covered pond, litter-based and outdoor systems produce pork associated with lower greenhouse gas emissions. Australian pork has significant potential to further reduce environmental impacts.
AN23352 Abstract | AN23352 Full Text | AN23352PDF (863 KB) | AN23352Supplementary Material (1.5 MB) Open Access Article
The concern over the spread of antimicrobial resistance has prompted a search for alternative solutions. Black soldier fly larvae extracts possess natural antibacterial properties that can potentially inhibit bacterial growth. Rearing black soldier fly larvae on a bread waste-based substrate enhanced their lauric acid yield, resulting in significant antibacterial efficacy against E. coli; hence, incorporating larval oil into animal feed holds the potential for reducing antibiotic drug usage.
This article belongs to the Collection Sustainable Animal Agriculture for Developing Countries 2023.
AN23394 Abstract | AN23394 Full Text | AN23394PDF (724 KB) Open Access Article
A well-functioning farm advisory services play a vital role in the improvement of livestock sector in low-income countries. We explored the ways in which capacity building through a particular training and professional-development intervention can lead farm advisors to act as innovation brokers within the advisory services system of Pakistan. The results are highly instrumental in strengthening farm advisory services and the role of farm advisors in low-income countries to support farmers in improving their livelihoods.
This article belongs to the Collection Sustainable Animal Agriculture for Developing Countries 2023.
AN23398 Abstract | AN23398 Full Text | AN23398PDF (617 KB) | AN23398Supplementary Material (646 KB) Open Access Article
White-rot fungus technology can revolutionise the utilisation of rice straw, because it enhances its quality by breaking down rigid components and boosting nutritional value. Investigating the temperature tolerance of these fungi is crucial for the practical application process, ensuring their effectiveness in diverse enviromental conditions and promoting their use in livestock feed. Unlocking their potential can increase the utility of this abundant by-product, contributing to environmental sustainability and agricultural productivity.
This article belongs to the Collection Sustainable Animal Agriculture for Developing Countries 2023.
AN23403 Abstract | AN23403 Full Text | AN23403PDF (297 KB) Open Access Article
This study investigated how long it takes for the performance of phosphorus (P)-deficient mature cows to improve once they are supplemented with P, and whether their long-term performance is compromised by P deficiency early in life. The performance of P-deficient cows improved to be similar to that of P-adequate cows within a year of P supplementation commencing. However, P deficiency early in life did have some residual stunting effects, resulting in lower hip height and liveweight.
Feather meal (FM) is a major by-product of the poultry industry and is potentially a valuable source of crude protein and amino acids. However, the major constraint to its use is the feather protein keratin that reduces FM digestibility. The aim of this study was to explore technologies to improve FM digestibility.
This article belongs to the Collection Sustainable Animal Agriculture for Developing Countries 2023.
AN24091 Abstract | AN24091 Full Text | AN24091PDF (296 KB) Open Access Article