Month: October 2023

Research Update: Stress And Immune Responses of Young And Aged Horses After Trailering

Horses are often trailered short distances for events, recreation, or routine care appointments. Trailering, especially long distances, can increase stress and decrease immune function in horses. Older horses may be more prone to changes in immune function when trailered. Researchers evaluated the stress and immune response between young and aged horse when trailered a short distance.

Researchers conducted the study using six aged (22 ± 1 years) and six young (2 ± 1 years) mares of similar body weight and body condition score. A pair of aged and young horses were hauled in a livestock trailer on one of three days during a two-week period. Each trip occurred at the same time of day, followed the same route (mostly highway), and lasted an hour and 20 minutes (55 miles). Blood and saliva samples were taken two to three weeks before hauling (baseline), an hour before hauling, and several timepoints after hauling (15 minutes to 8 days).

Data from one aged mare was omitted from the study due to baseline bloodwork that indicated potential endocrine disorders (pars pituitary intermedia dysfunction and insulin dysregulation).

Both age groups elicited an acute stress response from trailering a short distance. The researchers observed elevated heart rates, cortisol levels, and adrenocorticotropic hormone (ACTH) levels in the horses after trailering. However, ACTH was higher in the aged horses compared to the young horses.

Additionally, aged horses had a greater insulin response to trailering than the young horses. Three hours post-trailering, the aged horses had insulin levels above the reference level used to diagnose insulin dysregulation. All stress-related parameters returned to baseline levels within 24 hours of trailering.

Trailering short distances can cause an acute stress response in young and aged horses. Aged, metabolically normal horses had elevated insulin levels after trailering. This result may be an important consideration when hauling horses to a veterinary clinic and testing for endocrine disorders. Additionally, it highlights the need for further research to investigate the impact of trailering on insulin levels of horses diagnosed with endocrine disorders.

For more information on this research, read the abstract published in the Journal of Equine Veterinary Sciences. 

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Santa Anita Derby Winner Practical Move Best Of Four In Comeback

Idle since winning the Grade 1 Santa Anita Derby on April 8, trainer Tim Yakteen's Practical Move returned to action in a big way on Friday at Santa Anita, as he waltzed to a four-length victory in a one mile classified allowance, getting the trip under Ramon Vazquez in 1:35.14.

In a race reduced by three scratches to a field of four 3-year-olds and up, Practical Move sat a perfect trip, just off of dueling leaders Newgrange and Tripoli into and around the Club House turn.  As the field turned up the backside, it was Newgrange at the rail and Tripoli to his outside, with Practical Move about 1 ½ lengths off the lead a half mile from home.

Around the far turn, Practical Move glided into contention while well within himself and made the lead in the four-path leaving the quarter pole in-hand under Vazquez, who would go on to register his third win of the afternoon.

As for any speculation as to where Practical Move would run next, including the $6 million Breeders' Cup Classic or the $1 million Breeders' Cup Dirt Mile, both at Santa Anita on Nov. 4, Yakteen declined to speculate.

“We were hoping for this,” he said.  “Very happy with the way he ran, he'd been training very well but you never know until you run 'em…Things set up well for us today and he replicated what he's been doing in the morning.

“We're going to take a day or two, think about where we'll go next and we'll figure it out.  I'll get together with Peter and Leslie (Amestoy, part owners along with Roger Beasley) and then we'll take it from there.”

The 2-5 favorite, Practical Move returned $2.80 and $2.20 with no show wagering.

By the Into Mischief stallion Practical Joke out of the Afleet Alex mare Ack Naughty, Practical Move, who was bred in Kentucky by Chad Brown and Head of Plains Partners, now has five wins from eight starts.  With today's winner's share of $39,000 from total purse money of $65,000, Practical Move now has earnings of $923,200.

Tripoli, a 6-year-old full horse trained by John Sadler and a winner of the G1 Pacific Classic in 2021, was sent aggressively from his outside post and prevailed by three quarters of a length over 5-2 second choice Newgrange.

Off at 6-1, Tripoli paid $4.00 to place.

Fractions on the race were 21.79, 44.92, 1:09.47 and 1:22.18.

Racing resumes with first post time for a 10-race card on Saturday at 1 p.m.  Admission gates open at 11 a.m.

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Practical Move Makes Stylish Return to the Races

8th-Santa Anita, $63,700, Alw (C)/Opt. Clm ($80,000), 10-6, 3yo/up, 1m, 1:35.14, ft, 4 lengths.
PRACTICAL MOVE (c, 3, Practical Joke–Ack Naughty {MSP, $310,450}, by Afleet Alex) has never been off the board in his career and after almost six months away since winning the GI Santa Anita Derby by the slimmest of noses over Mandarin Hero (Jpn) (Shanghai Bobby), he returned to the races here like he never left. Enthusiastically hammered down to 2-5 favoritism at the windows and on Lasix for the first time in his career, he left the blocks well against a short, albeit quality, field. Comfortably rated from the jump in third as Newgrange (Violence) and Tripoli (Kitten's Joy) disputed the early pace, he followed them up the backstretch and into the far turn where he challenged passing the quarter pole. Inhaling Tripoli coming off the bend, he kicked home when asked for more and coasted home much the best by four lengths.

“We were hoping for this,” said Yakteen. “Very happy with the way he ran, he'd been training very well but you never know until you run 'em…Things set up well for us today and he replicated what he's been doing in the morning.”

When asked about a potential next start, the conditoner declined to speculate: “We're going to take a day or two, think about where we'll go next and we'll figure it out.”

Ack Naughty's first offspring to the races and to garner black-type, Practical Move has a yearling half-brother by Complexity. Their 2023 Upstart half-sibling was stillborn and the dam went to the venerable Into Mischief for 2024. Sales history: $90,000 RNA Ylg '21 KEESEP; $230,000 2yo '22 OBSAPR. Lifetime Record: GISW, 8-5-1-2, $923,200. Click for the Equibase.com chart or VIDEO, sponsored by FanDuel TV.
O-Leslie A. & Pierre J. Amestoy, and Roger K. Beasley; B-Chad Brown & Head of Plains Partners (KY); T-Tim Yakteen.

 

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