Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo

The aim of this study was to evaluate the efficacy of a progesterone-based treatment on anoestrus in buffaloes. Primiparous acyclic buffaloes (<i>n</i> = 276), were divided into three classes according to their days in milk (DIM): from 50 to 90 (Class I; <i>n</i> = 86), from...

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Autores principales:	Roberta Matera, Alessio Cotticelli, Angela Salzano, Nadia Piscopo, Anna Balestrieri, Giuseppe Campanile, Gianluca Neglia
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Mediterranean buffalo progesterone anoestrus Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/12e28ac227c4432db3fb8eb353ef34fa
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spelling	oai:doaj.org-article:12e28ac227c4432db3fb8eb353ef34fa2021-11-25T16:17:44ZInfluence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo10.3390/ani111131662076-2615https://doaj.org/article/12e28ac227c4432db3fb8eb353ef34fa2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3166https://doaj.org/toc/2076-2615The aim of this study was to evaluate the efficacy of a progesterone-based treatment on anoestrus in buffaloes. Primiparous acyclic buffaloes (<i>n</i> = 276), were divided into three classes according to their days in milk (DIM): from 50 to 90 (Class I; <i>n</i> = 86), from 91 to 150 (Class II; <i>n</i> = 102) and from 150 to 200 (Class III; <i>n</i> = 88). Animals were synchronized using P<sub>4</sub> vaginal implants, followed by timed artificial insemination (TAI). They were then allowed to enter into a larger group of buffaloes for natural mating 15 days after AI was performed, and pregnancy status was monitored from then on at 15-day intervals. Finally, the temperature–humidity index (THI) was calculated. Statistical analysis was performed by ANOVA by means and both multiple and linear regression. The total pregnancy rate (PR) was 87.7%, with no differences among DIM classes (88.0, 92.4, and 80.0% in Classes I, II, and III, respectively). However, the PR at TAI tended to be higher (<i>p</i> = 0.07) in buffaloes in Class II. The follicle (FL) area in Class II buffaloes was larger (<i>p</i> < 0.01) than that of the other classes. No influence of the THI on the total PR was recorded. The pregnancy outcome at TAI was affected by the FL area (odds ratio = 2.237; <i>p</i> < 0.05) and body condition score (BCS) (odds ratio = 1.256; <i>p</i> < 0.05). In conclusion, treatment with vaginal P<sub>4</sub> optimizes pregnancy rates in anoestrus buffaloes, particularly when the animals are in mid-lactation and show an optimal BCS. Furthermore, the THI does not seem to affect the efficiency of the progesterone treatment.Roberta MateraAlessio CotticelliAngela SalzanoNadia PiscopoAnna BalestrieriGiuseppe CampanileGianluca NegliaMDPI AGarticleMediterranean buffaloprogesteroneanoestrusVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3166, p 3166 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mediterranean buffalo progesterone anoestrus Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	Mediterranean buffalo progesterone anoestrus Veterinary medicine SF600-1100 Zoology QL1-991 Roberta Matera Alessio Cotticelli Angela Salzano Nadia Piscopo Anna Balestrieri Giuseppe Campanile Gianluca Neglia Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo
description	The aim of this study was to evaluate the efficacy of a progesterone-based treatment on anoestrus in buffaloes. Primiparous acyclic buffaloes (<i>n</i> = 276), were divided into three classes according to their days in milk (DIM): from 50 to 90 (Class I; <i>n</i> = 86), from 91 to 150 (Class II; <i>n</i> = 102) and from 150 to 200 (Class III; <i>n</i> = 88). Animals were synchronized using P<sub>4</sub> vaginal implants, followed by timed artificial insemination (TAI). They were then allowed to enter into a larger group of buffaloes for natural mating 15 days after AI was performed, and pregnancy status was monitored from then on at 15-day intervals. Finally, the temperature–humidity index (THI) was calculated. Statistical analysis was performed by ANOVA by means and both multiple and linear regression. The total pregnancy rate (PR) was 87.7%, with no differences among DIM classes (88.0, 92.4, and 80.0% in Classes I, II, and III, respectively). However, the PR at TAI tended to be higher (<i>p</i> = 0.07) in buffaloes in Class II. The follicle (FL) area in Class II buffaloes was larger (<i>p</i> < 0.01) than that of the other classes. No influence of the THI on the total PR was recorded. The pregnancy outcome at TAI was affected by the FL area (odds ratio = 2.237; <i>p</i> < 0.05) and body condition score (BCS) (odds ratio = 1.256; <i>p</i> < 0.05). In conclusion, treatment with vaginal P<sub>4</sub> optimizes pregnancy rates in anoestrus buffaloes, particularly when the animals are in mid-lactation and show an optimal BCS. Furthermore, the THI does not seem to affect the efficiency of the progesterone treatment.
format	article
author	Roberta Matera Alessio Cotticelli Angela Salzano Nadia Piscopo Anna Balestrieri Giuseppe Campanile Gianluca Neglia
author_facet	Roberta Matera Alessio Cotticelli Angela Salzano Nadia Piscopo Anna Balestrieri Giuseppe Campanile Gianluca Neglia
author_sort	Roberta Matera
title	Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo
title_short	Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo
title_full	Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo
title_fullStr	Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo
title_full_unstemmed	Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo
title_sort	influence of days after calving and thermal stress on the efficacy of a progesterone-based treatment in acyclic italian mediterranean buffalo
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/12e28ac227c4432db3fb8eb353ef34fa
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Influence of Days after Calving and Thermal Stress on the Efficacy of a Progesterone-Based Treatment in Acyclic Italian Mediterranean Buffalo

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