Wetteny Joseph
Executive Vice President and Chief Financial Officer at Zoetis
Thank you, Kristin, and good morning, everyone. As Kristin mentioned, we had a strong third quarter, with broad-based growth across both our U.S. and International segments across both companion animal and lifestyle portfolios and across both price and volume. For the quarter, we were able to deliver results in line with our expectations, even in light of continued headwinds in China. In the third quarter, we generated revenue of $2.2 billion, growing 7% on a reported basis and 8% on an operational basis. Adjusted net income of $629 million grew 11% on a reported basis and 13% on an operational basis.
Of the 8% operational revenue growth, 5% is from price and 3% is from volume. Volume growth consisted of 2% from new products, including our monoclonal antibodies for OA pain, Librela and Solensia and 1% from our key dermatology portfolio. Our companion animal portfolio was the main driver of revenue growth, growing 11% operationally. Livestock also contributed, with operational growth of 3% in the quarter. Companion animal growth was again driven by our innovative products with double-digit operational growth in our key dermatology portfolio, our monoclonal antibodies for OA pain, Librela and Solensia and Simparica Trio.
Our key dermatology products generated $393 million in sales globally, posting growth of 14% on an operational basis with double-digit growth in both the U.S. and International. Globally, our monoclonal antibodies for OA pain posted $77 million in combined revenue in the quarter. Growth came primarily from our European markets as well as from the impact of new launch markets internationally. With the October full launch of Librela in the U.S., our OA pain products are now available in most major markets. Simparica Trio posted global revenue of $206 million in the quarter, representing growth of 20% operationally versus the comparable 2022 period.
Growth was driven by expanded DTC advertising support globally as well as from increased field force and promotional focus. Our companion animal diagnostics portfolio reported revenue of $90 million and grew 14% operationally, with growth contributions from both the U.S. and International. Our Lifestyle portfolio grew 3% operationally, with International growth partially offset by a slight decline in the U.S. Growth in livestock was driven primarily by price, especially in high inflationary markets. We also saw volume growth in our poultry portfolio, driven by increased usage of vaccines as well as our [antioxodio] product, Zoamix in the U.S.
Now moving on to revenue growth by segment for the quarter. U.S. revenue was $1.2 billion in the quarter, growing 8%, with companion animal products growing 11% and livestock sales declining 2%. On the companion animal side, while vet clinic visits declined 1.5% in the quarter, we continue to see robust play in revenue growth, up 6% versus a year ago. Average revenue per visit is up over 7%. On a year-to-date basis, clinic visits are flat, while clinic revenue is growing 8%. These trends highlight the continued durability of pet owner willingness to spend as well as the continued impact of vet clinic staffing challenges. Our companion animal revenue growth continues to outpace veterinary clinic revenue growth, due in part to our continued upsized growth in retail channel.
Turning to product performance. Companion animal growth in the U.S. was driven by our key dermatology portfolio, Simparica Trio and Solensia. Key dermatology product sales in the U.S. were $260 million in the quarter, growing 13%. Cytopoint sales continued to drive growth in the quarter with vets showing a preference for injectables due to higher compliance and pet owners appreciating the longer duration of treatment. Apoquel sales were driven by growth in the retail channel as pet owners continue to rely more heavily on retail for ongoing pharmacy needs as well as retail auto ship programs that drive higher compliance. Our latest dermatology life cycle innovation, Apoquel Chewable was launched in the U.S. in October.
Apoquel Chewable has been well received in Europe, as pet owners favor the ease of chewable administration over film-coated tablets. Apoquel Chewable posted U.S. sales of $184 million in the quarter, growing 17%, driven by increased focus in our parasiticide promotional programs. We continue to see patient share growth in Simparica Trio, even with the recent competitive launch in the triple combination space. We remain confident in our ability to compete through our superior label, strong retail channel presence, and the strength of our corporate and specialty relationships. In the U.S., our OA pain products posted sales of $15 million in the quarter.
We continue to see solid player penetration growth for Solensia, as well as an uptick in feline clinic visits and expect to continue to drive awareness of feline OA through our DTC advertising campaigns. Librela has been well received by early experience program participants and their patients during the third quarter. We moved to a full launch in mid-October. We have been very pleased with post launch performance thus far and are confident that we have ample supply to meet our demand expectations. Our U.S. companion animal diagnostics portfolio posted growth of 18% in the quarter, as we continue to see positive results from the new field force we introduced last year.
We saw strong placement growth in the quarter, especially on our images device. U.S. livestock sales declined 2% in the quarter, primarily resulting from the timing of supply on certain cattle products in the prior year, where we had an improved supply position and restocking in the channel, which drove a strong comparable quarter. The Q3 decline was partially offset by growth in our cattle productivity implant, SYNOVEX due to extended label claims. The cattle decline was partially offset by growth in poultry due to vaccines and the extended use of Zoamix, an alternative to antibiotic medicated feed additives. Moving on to our International segment, where revenue grew 8% on both reported and operational basis in the quarter.
International companion animal revenue grew 12% operationally and livestock grew 5% operationally. Increased sales of companion animal products resulted from growth in our monoclonal antibodies for OA pain, our key dermatology products and our small animal parasiticides portfolio. Growth in our OA pain products was bolstered by field force focus and DTC awareness campaigns in early launch European markets, specifically the U.K. and Germany, as well as the continued uptake in markets launched earlier this year. Librela sales were $50 million International or 55% operational growth in the quarter, despite a slightly more difficult comparator in Q3 of 2022 due to the removal of supply constraints in our International markets.
We remain confident in our ability to supply our forecasted demand for Librela. Solensia sales were $12 million in the quarter. Our International key dermatology portfolio contributed $133 million of revenue and grew 17% operationally. We saw double-digit growth across most of our major markets and strong uptake of Apoquel Chewable. Apoquel growth was driven primarily by the delayed itch season in Europe and Canada. Cytopoint growth was driven by continued patient expansion and higher compliance in existing patients. Our International small animal parasiticides portfolio growth of 9% operationally was driven by our Simparica franchise, with Simparica posting $40 million in revenue, growing 29% operationally, driven primarily by demand generation in emerging markets.
Simparica Trio posted $23 million, growing 47% on an operational basis, driven by growth in corporate account contracts. The Simparica franchise performance was partially offset by a 16% operational decline in Revolution franchise, driven by a difficult comparable period in China, due to the return of supply in the prior year as well as the ongoing impact of the current economic conditions. As Kristin mentioned, we have seen declines in China due to the ongoing economic challenges, particularly on the companion animal side, which were not fully reflected in our initial guidance.
We continue to monitor economic conditions. However, we are not expecting an improvement this year or into the first half of next year. Our International livestock segment grew 5% operationally in the quarter, driven primarily by price increases, especially in high inflationary markets. Growth was driven primarily by our cattle portfolio, which grew 8% operationally. Brazil was the largest contributor, where we have seen price growth, supply recovery on certain products as well as continued improvement in cattle industry dynamics. Additionally, the prior year was a weak comparative period due to the impact of supply disruptions and a more uncertain industry dynamic led to a lowering of channel inventories in the quarter.
Our poultry business also contributed to growth in the quarter, growing 9% operationally due to increased key account penetration in emerging markets. Now moving on to the rest of the P&L for the quarter. Adjusted gross margin of 70.5% improved 70 basis points on a reported basis compared to the prior year, primarily driven by the impact of price increases and lower freight charges. This was partially offset by higher manufacturing costs, inventory charges and product mix. Adjusted operating expenses increased 7% operationally, driven primarily by higher SG&A expenses, which were 5% operationally due to higher competition related expenses.
R&D expenses grew 13% on an operational basis in the quarter, driven by higher compensation-related expenses as well as increased project spend for our pipeline projects. The adjusted effective tax rate for the quarter was 19.6%, a decrease of 130 basis points due to favorable jurisdictional mix of earnings and a higher benefit in the U.S. related to foreign-derived intangible income, partially offset by lower net discrete tax benefits. And finally, adjusted net income was 13% operationally and adjusted diluted EPS grew 15% operationally for the quarter. Capital expenditures in the third quarter were $145 million. We now expect full year capital expenditures to be in the range of $725 million to $750 million.
In the quarter, we repurchased $250 million of Zoetis shares. Now moving to guidance for the full year 2023. Please note that guidance reflects foreign exchange rates as of late October, which reflect the continued strengthening of the U.S. dollar. Beginning with revenue for the full year. Due to unfavorable foreign exchange rates, we are revising our reported revenue range while narrowing our guidance on operational revenue growth. We expect revenue between $8.475 billion and $8.55 billion, with a range of 6.5% to 7.5% operational growth. Our previous guidance was 6% to 8%. We have been pleased with our operational performance thus far.
While foreign exchange headwinds have been larger than expected, our year-to-date operational revenue growth of 7% is in line with our expectations. We expect to benefit from the approval and launch of Librela in the U.S., which is included in our revised guidance last quarter as well as the performance of our Lifestyle business. However, ongoing uncertainty in China has continued to offset upside potential. We are expecting adjusted net income to be in the range of $2.49 billion to $2.51 billion, also slightly lower, driven by unfavorable foreign exchange. Operationally, we are narrowing our growth expectations to a range of 7.5% to 8.5%, previously 7% to 9%.
Expected reported diluted EPS narrows to a range of $5.14 to $5.21. And adjusted diluted EPS narrows to $5.38 to $5.43. Finally, to summarize before we go to Q&A. Our broad-based growth across species and geographies despite the challenging economic environment in China, continue to highlight the resilience of our portfolio and of the animal health industry. We remain committed to growing above the industry, driven by our innovative portfolio, commercial execution and multiple sources of in-line growth.
Now I'll hand things over to the operator to open the line for your questions. Operator?