New PDF release: Breeding Horses
By Mina Davies-Morel
Written for college students and all with a basic curiosity in breeding horses, this publication units out to supply a simple figuring out with adequate functional info for novices to get started.
Enough reproductive body structure of the mare and stallion is incorporated to explain the administration ideas that are defined later within the publication, yet pointless information are shunned. man made insemination and embryo move also are defined, as are deciding on the broodmare and stallion, administration at overlaying and through being pregnant, and post-partum care of the mare and foal.
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Extra info for Breeding Horses
Though progesterone treatment is often used there is no scientiﬁc evidence to support that it works. 3 Parturition (birth) Pregnancy (gestation) in the mare lasts approximately eleven months (310–374 days). The exact length, however, varies with breed; ponies tend to foal two weeks before thoroughbred mares (320 days compared to 335 days). Mares mated early in the season tend to have longer pregnancies than those mated later on and colt foals are born about three days later than ﬁlly foals. The mare herself may also affect the precise hour of foaling most preferring to foal at night in a quiet environment.
The thoroughbred. Regardless of the length of her breeding season the mare shows a regular series of oestrous cycles throughout her season. 1 The oestrous cycle The oestrous cycle of the mare is divided into a period of sexual interest (oestrus or heat, 4–5 days) followed by a period of disinterest (dioestrus, 16–17 days). These cycles start at puberty (from between 10–24 months of age) and each one lasts 21 days. Each cycle is a pattern 37 38 Breeding Horses of changes in: hormone secretion; the appearance of the reproductive tract and behaviour.
CABI. 33). The milk-producing tissue within the mammary gland is made up of millions of alveoli and interconnecting ducts. 34 The mammalian alveolus. On the left, a cross-section illustrating the lactating cells surrounding the alveolar lumen, which is continuous with the mammary gland duct system. On the right, an alveolus illustrating the muscle cells and blood supply. © CABI. 34), which is continuous with the ducts of the gland. Milk is secreted by the lactating cells into the lumen and on to the teats for storage ready for the foal at suckling.
Breeding Horses by Mina Davies-Morel