Study of sexual behaviours with different types of estrus synchronization protocols in Boer goats

Salleh, Suraya Mohamad; Basri, Abdul Mu’in Hassan; Yaakub, Halimatun

doi:10.1590/1984-3143-ar2020-0038

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…In addition, an estrus examination was carried out every day by observing visual estrous signs and behaviours. Estrus is established when the does show clinical signs of estrus, i.e., reddening of vulva, swollen vulva and discharge from vulva, tail wagging, and standing to be mounted by a buck (Salleh et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

Influence of refeeding on production, blood biochemistry parameters, and reproduction in underfed Kacang goat does

Widiyono

Yanuartono

Purnamaningsih

et al. 2022

Animal Physiology Nutrition

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This research aimed to investigate the effect of refeeding on production, blood biochemical parameters, and reproduction in underfed Kacang goat does. Twelve 2-3year-old Kacang goats scored (body condition score [BCS]: 1-1.5) with poor body condition but appeared healthy, gave normal births 3-4 months before but no longer nursing their youngs, and anestrus were used in this study. The experiment consisted of 110 days with 14 days of adaptation period and 96 days of feeding treatment and data collection. After the adaptation period, the animals were divided into two groups (A and B), with six animals each. During the first 40 days (underfeeding period), they were fed with kangkong (Ipomoea reptans) straw at a level of 2% of body weight (BW).For the following 56 days (refeeding period), each animal in group A was fed at the level of 4% BW per day while group B was fed at the level of 5% BW per day consisting of 50% kangkong straw and 50% concentrate. Feed intake, average daily gain, body condition, and estrus were assessed in the period of underfeeding and refeeding. Blood samples were collected at the end of the underfeeding and refeeding period for blood biochemical parameter analyses. During the underfeeding period, the animals were anestrous and had poor body condition (BCS: 1.17-1.33) and high serum levels of cortisol, progesterone, and estradiol. Refeeding resulted in a significant increase in BCS (2.75-3.0), restoring estrous cycle, and reduced serum cortisol and progesterone level (p < 0.05). The Kacang goats had good compensatory growth.It could be concluded that refeeding at the level of 4-5% BW would restore undernourished goats' clinical condition, productivity, and reproductive performance after 8 weeks of refeeding.

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Section: Methodsmentioning

confidence: 99%

Influence of refeeding on production, blood biochemistry parameters, and reproduction in underfed Kacang goat does

Widiyono

Yanuartono

Purnamaningsih

et al. 2022

Animal Physiology Nutrition

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Reproduction and kidding in goats

Bajaj

2024

Trends in Clinical Diseases, Production and Management of Goats

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Influence of repeated estrus synchronization treatment on hormone secretion, growth, and development of dairy goats

Sun,

Lv,

Niu

et al. 2024

Front. Vet. Sci.

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In large-scale intensive farms, dairy goats often undergo frequent estrus synchronization (ES) treatment, which may result in a decline in reproductive performance; however, the underlying mechanism remains unclear. The present study aimed to investigate the effect of pregnant mare serum gonadotropin (PMSG) and progesterone (P4)-mediated ES treatment on fertility in dairy goats, while also identifying key metabolic and endocrine mechanisms that influence reproductive performance in does subjected to repeated ES treatment. Forty-eight Saanen does were randomly assigned to two groups (24 goats each) that received ES treatments either thrice fortnightly (3-PMSG) or once (1-PMSG) simultaneously with the third ES treatment of the 3-PMSG group during the breeding season. ES treatment was performed via the intravaginal insertion of a controlled internal drug release (CIDR) device impregnated with 300 mg P4, followed by 300 IU PMSG injections 48 h before CIDR withdrawal. Blood was collected to detect the level of hormones and blood biochemical indices. Additionally, estrus rate, fecundity rate, body weight, size, and lactation performance were measured. The results showed that repeated ES treatment markedly decreased the estrus rate and fecundity rate of goats. Among the does in all groups, there was no substantial difference in follicle stimulating hormone, luteinising hormone, gonadotropin-releasing hormone, melatonin, growth hormone, PMSG, total cholesterol, total protein, and glucose levels, as well as the body weight, body size, and lactation performance. Repeated ES treatment elevated estrogen (E2) levels 36, 48, and 72 h post-CIDR removal; increased P4 upon CIDR insertion; and raised PMSG antibody levels 24, 48, and 72 h post-CIDR removal. The results suggest that elevated anti-PMSG levels are the primary reason for the decline in ES efficiency, and that high E2 and P4 levels at some time points also impair reproductive performance. These findings provide novel insights into the metabolic effects of repeated PMSG stimulation in goats, guiding future reproductive hormone use in breeding practices.

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Study of sexual behaviours with different types of estrus synchronization protocols in Boer goats

Cited by 3 publications

References 29 publications

Influence of refeeding on production, blood biochemistry parameters, and reproduction in underfed Kacang goat does

Influence of refeeding on production, blood biochemistry parameters, and reproduction in underfed Kacang goat does

Reproduction and kidding in goats

Influence of repeated estrus synchronization treatment on hormone secretion, growth, and development of dairy goats

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