Influence of BCS and Weight on Sheep Performance

Influence of BCS and Weight on Sheep Performance

This article was written by Kristy Blankers and Delma Kennedy Introduction Animal efficiency is important to a livestock farm’s bottom line. Therefore, it is beneficial to select for animals that are able to wean more kilograms of lamb per kilogram of mature body weight. Animal performance is influenced by a ewe’s body condition score (BCS) and body weight. To effectively select animals that are more efficient, body weight and BCS must be taken into consideration. Over the past four years, BCS, body weight, and performance data has been collected on farm with the objective of being able to create a genetic evaluation model to select animals that can maximize production per kilogram of mature body weight. With three breeding seasons…

Pregnancy Scanning: Management Tips

Pregnancy Scanning: Management Tips

This blog post was adapted from the OMAFRA Factsheet “Pregnancy Scanning: Management Tips” (AGDEX 433/22) by A. O’Brien. Introduction Pregnancy scanning, using real-time ultrasound equipment, is a useful management tool for Ontario sheep and goat producers. When scanning is performed within the recommended time frame by trained professionals, accuracy of identifying animals that are not pregnant and counting the number of fetuses is high. Pregnancy scanning can be used to assign open ewes to new breeding groups, make culling decisions, and optimize feeding management based on expected litter size. Benefits of Ultrasound Scanning Factors Affecting Ultrasound Scanning Accuracy For producers to get the maximum benefit from pregnancy scanning, factors affecting accuracy need to be well understood. Some of the factors…

Managing Rams for a Successful Breeding Season

The ram is the most important member of the flock, yet he does not always get the attention he deserves. Good ram management can determine the success of your breeding program and ensure a profitable lamb crop. Sperm production in rams takes 49 days, therefore it is important to remember that you will not see the effects of any management changes for almost 7-8 weeks. You’ll want to ensure rams are well looked after in the two month period leading up to the breeding season as it will have a direct effect on the quality of sperm and fertility of the ram. Testicle size is a good indicator of a ram’s sperm producing ability, which can be assessed using scrotal circumference.…

Sheep Reproduction Basics and Conception Rates

To run a profitable sheep operation, producers must understand the details of many different disciplines and how they interrelate. One of the basic aspects of a sheep farming operation is to make sure that ewes become pregnant and have lambs. It is important to understand the basic physiology of the reproductive cycle to ensure that management decisions do not prevent ewes from becoming pregnant. Conception rate varies between season, age, breed and lambing system. Understanding the effect of these factors will enable you to determine what a good conception rate is for your farm. Read more in the OMAFRA factsheet Sheep Reproduction Basics and Conception Rates.