Impacts of body condition score at beginning of fixed-timed AI protocol and subsequent energy balance on ovarian structures, estrus expression, pregnancy rate and embryo size of Bos indicus beef cows

Vedovatto, Marcelo; Lecciolli, Renan Barbosa; Lima, Eduardo de Assis; Rocha, Raizza Fátima Abadía Tulux; Coelho, Rafaela Nunes; Moriel, Philipe; Silva, Luana Gomes da; Ferreira, Luiz C.L.; Silva, Aldair Félix da; Reis, Willian Vaniel Alves dos; Oliveira, De; Franco, Gumercindo Loriano

doi:10.1016/j.livsci.2022.104823

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…Lower BCS would be able to affect follicle development and ovulation rate (Centurion-Castro et al, 2013). Likewise, study of Vedovatto et al (2022) stated that the cattle with greater BCS had greater ovarian structure development. This suggests that BCS of the cattle at the beginning of estrous synchronization treatment must be paid attention in order to increase the effectiveness of regime.…”

Section: Results and Discussion Ovarian Activity Of Dairy Heifers Pri...mentioning

confidence: 99%

Responses of Ovarian Activity of Dairy Holstein Friesian Heifers after Synchronized Using Heasynch and Select Synch Protocols

Yusuf,

Toleng,

Sahiruddin

et al. 2024

AAVS

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The objective of this study was to determine the ovarian responses of dairy heifers after treated with estrous synchronization using Heasynch and Select Synch protocols. The study was conducted in Maiwa Breeding Centre (MBC) Farm of Hasanuddin University. A total of 18 dairy Holstein Friesian heifers were used in the present study. The heifers were then divided into two groups based on different treatments of estrous synchronization. All heifers were examined for ovarian activities prior to synchronize the estrus then subjected to either Heasynch or Select Synch protocols. The results of this study showed that inactive ovaries of dairy heifers were relatively higher in comparison to both follicular and luteal phases (58% vs. 26% and 16%). After treating the heifers with either Heatsynch or Selectsynch protocols for synchronizing the estrus, all animals become estrus as predicted in advance. The mean interval from PGF 2α injection to onset of estrus was 42 and 43 h (P>0.05) in Heatsynch and Select-synch protocols, respectively. However, the mean duration of estrus in dairy heifers synchronized using Heatsynch protocol was 25.1 h, significantly higher (P=0.029) than the mean duration of estrus (19.5 h) in Select Synch protocol. It can be concluded that dairy Holstein Friesian heifers synchronized with both the Heatsynch and Select Synch protocols had a good response in synchronizing the estrus regardless of the condition of the ovaries.

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Section: Results and Discussion Ovarian Activity Of Dairy Heifers Pri...mentioning

confidence: 99%

Responses of Ovarian Activity of Dairy Holstein Friesian Heifers after Synchronized Using Heasynch and Select Synch Protocols

Yusuf,

Toleng,

Sahiruddin

et al. 2024

AAVS

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“…The evaluation of BCS in the last third of pregnancy, at calving and after calving, a practical and low-cost method, being essential in order to estimate the body energy reserves in beef cows and predict the reproductive success (Ayres et al, 2014;Vedovatto et al, 2022). It is noteworthy that the animals of both treatments had an average body condition (5) suitable for parturition (NRC, 2000), due to the good availability of forage.…”

Section: Discussionmentioning

confidence: 99%

Changes in nutritional characteristics and performance of grazing Nellore cows during the peripartum phase receiving or not protein supplementation

David

Matos

Domingos

et al. 2022

Preprint

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We objective was to understand the changes in nutritional characteristics and performance of grazing Nellore cows during the peripartum receiving or not supplementation. Forty multiparous cows were used, divided into two treatments: CON - mineral mixture and SUP – protein supplementation. Digestibility trial was performed (-45,-30,-15, + 20, +40; days relative to calving). The average daily gain (ADG) pre and postpartum of the cows were measured and, in gestational and maternal tissues in the prepartum, in addition of body condition score (BCS). The calves were weighed at birth and at 30 days of age. There was an effect of treatment and period (P ≤ 0.10) for dry matter, organic matter and crude protein intake, while forage intake was similar (P ≥ 0.10), but with a period effect (P ≤ 0.10). There was 14.37% decrease in dry matter intake from day − 30 to day − 15 of prepartum. In the postpartum period, at 20 days of lactation, there was increase of 72.66% in relation to the period − 15. There was interaction between period and treatment for all digestibilities (P ≤ 0.10). No differences were observed in postpartum ADG (P ≥ 0.10), BCS at calving and postpartum (P ≥ 0.10). However, higher total ADG and in maternal tissues (P ≤ 0.10) were observed on supplemented animals, but with ADG in gestational tissues similar (P ≥ 0.10). It is concluded that there is a decrease in voluntary intake in grazing pregnant cows close to parturition and greater performance of animals supplemented in prepartum.

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Impacts of body condition score at beginning of fixed-timed AI protocol and subsequent energy balance on ovarian structures, estrus expression, pregnancy rate and embryo size of Bos indicus beef cows

Cited by 2 publications

References 20 publications

Responses of Ovarian Activity of Dairy Holstein Friesian Heifers after Synchronized Using Heasynch and Select Synch Protocols

Responses of Ovarian Activity of Dairy Holstein Friesian Heifers after Synchronized Using Heasynch and Select Synch Protocols

Changes in nutritional characteristics and performance of grazing Nellore cows during the peripartum phase receiving or not protein supplementation

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